Safety device for spotting a user of a barbell without a need for human intervention

[0001] A. Field of the Invention

[0002] The embodiments of the present invention relate to a safety device for spotting a user of a barbell, and more particularly, the embodiments of the present invention relate to a safety device for spotting a user of a barbell without a need for human intervention.

[0003] B. Description of the Prior Art

[0004] Numerous innovations for weight lifting related devices have been provided in the prior art that will be described below in chronological order to show advancement in the art, and which is incorporated herein by reference thereto. Even though these innovations may be suitable for the specific individual purposes to which they address, however, they differ from the present invention.

[0005] (1) U.S. Pat. No. 4,253,662 to Podolak.

[0006] U.S. Pat. No. 4,253,662 issued to Podolak on Mar. 3, 1981 in class 272 and subclass 123 teaches accessory apparatus for use by a person working with weights in a body building program. Under a modern, well accepted theory, muscle growth and strength can best be promoted by “high intensity” exercise, which means the repetitive performance of a resistance movement to the point of momentary muscular failure. In performing a high intensity exercise, as for example in bench pressing, the exerciser may find himself trapped beneath a heavy weight upon reaching the point of muscular failure. In such case, the apparatus eliminates the need for a human partner by providing a power driven mechanical device for lifting the weight. The mechanical device is put into operation by a hand- or foot-operated switch easily accessible to the exerciser.

[0007] (2) U.S. Pat. No. 4,949,959 to Stevens.

[0008] U.S. Pat. No. 4,949,959 issued to Stevens on Aug. 21, 1990 in class 272 and subclass 123 teaches a barbell assist device characterized by a frame fitted with a horizontal housing for enclosing a motor-driven yoke assembly provided with cables extending around sheaves and downwardly from each end of the housing to support a barbell over a weight bench. A kick plate is located in close proximity to the weight bench and is wired into the motor through electronic circuitry facilitating raising and lowering the barbell responsive to contacting the kick plate. The barbell assist device is useful in “spotting” a barbell containing free weights and in performing weight lifting repetitions and negative stress exercises.

[0009] (3) U.S. Pat. No. 4,998,721 to Anders et al.

[0010] U.S. Pat. No. 4,998,721 issued to Anders et al. on Mar. 12, 1991 in class 272 and subclass 118 teaches enabling weightlifting athletes to rapidly and efficiently improve concentric-type muscular development. An exercising apparatus having two shafts is provided with motor-driven barbell-tethered cables adapted to supplement the athlete's total physiological energy with motor-assist poundage. The motor-assists are of the unidirectional type to rapidly and efficiently improve eccentric-type muscular development. Shafts-mounted braking system protect a weary athlete from the contingency of a rapidly descending barbell.

[0011] (4) U.S. Pat. No. 5,048,826 to Ryan.

[0012] U.S. Pat. No. 5,048,826 issued to Ryan on Sep. 17, 1991 in class 272 and subclass 123 teaches a safety apparatus for use with a barbell assembly, which includes a support frame, a pair of cables securable to opposite ends of the barbell assembly, a winch assembly on the support frame for retracting and releasing the cables, a pair of tension sensors for sensing the tension in the cables, a velocity sensor for sensing the speed and direction of movement of at least one of the cables, and a controller for controlling the operation of the winch assembly. The controller is responsive to the tension sensors and the velocity sensor for normally releasing and retracting the cables during a weight lifting routine so that the safety apparatus is normally unnoticeable to a weightlifter. The controller is also responsive to the sensors for detecting an abnormal condition during an exercise routine and is operative in responsive to an abnormal condition for taking control of the barbell assembly to reduce the risk of injury to the weightlifter.

[0013] (5) U.S. Pat. No. 5,314,394 to Ronan.

[0014] U.S. Pat. No. 5,314,394 issued to Ronan on May 24, 1994 in class 482 and subclass 104 teaches a weightlifting apparatus including a support structure for supporting a weight to be lifted, and a monitoring system for monitoring the position of the weight within a range of movement. The monitoring system includes sensors positioned within the range of movement, an assisting unit for intermittently providing assistance, and a control unit for continuously controlling the assisting unit responsive to the outputs of the sensors. The apparatus is further capable of providing variable amounts of assistance.

[0015] (6) U.S. Pat. No. 5,823,921 to Dawson.

[0016] U.S. Pat. No. 5,823,921 issued to Dawson on Oct. 20, 1998 in class 482 and subclass 104 teaches a free weight lifting exercise machine having a barbell connected to a cable system operated by a pneumatic motor supported below a lifting bench. An electropneumatic control system operated by a weightlifter using the machine controls the pneumatic motor to apply an exponentially variable lifting force to the cable in response to linear movement of a foot pedal to replicate the function of a “spotter.” The control system automatically applies sufficient lifting force to the cable to remove slack from the cable during the lifting mode and nullifies the slack removing force during the lowering mode of a normal lifting exercise enabling the lifter to perform a free weight lifting exercise free of machine influence.

[0017] (7) U.S. Pat. No. 5,989,164 to Kullman et al.

[0018] U.S. Pat. No. 5,989,164 issued to Kullman et al. on Nov. 23, 1999 in class 482 and subclass 93 teaches a free standing frame or one carried by a barbell holder mounts a safety apparatus. The safety apparatus has a catch that may be a set of bars, loops, or other arrangements deployed to coact with a bar of the barbell proximate each end of the barbell when an unsafe condition exists and move the barbell out of harms way. The safety apparatus is used with free weights in order to prevent injury to the weight lifter. Such injury may occur when the weight lifter is fatigued or some other emergency does not allow the weight lifter to complete another repetition. In such a case, the barbell and attached weights are automatically moved to a safe position. The catch is attached to a line that in turn is attached to a wind-up device. Prior to attachment to the wind up device, the orientation of the lines are changed from vertical to essentially horizontal by passing over a pulley or other cylindrical member being attached to a motor. The motor that is attached to the wind-up device is activated automatically or manually when danger to the weight lifter is imminent. After activation and removal of the barbell and weight from endangering the weight lifter, the system is reset and ready for use once again.

[0019] (8) U.S. Pat. No. 5,989,166 to Capizzo et al.

[0020] U.S. Pat. No. 5,989,166 issued to Capizzo et al. on Nov. 23, 1999 in class 482 and subclass 104 teaches an adjustable, portable apparatus for assisting weight lifters to safely perform barbell press exercises to muscular failure and assist in a forced repetition. The apparatus includes two spaced vertically telescoping stanchions with upper ends for allowing adjustment between a minimum length position and a maximum length position of the stanchions. The apparatus further includes a cantilevered member extending horizontally from each of the stanchion's upper ends and a member horizontally interconnecting the cantilevered members allowing adjustment between a minimum width position and a maximum width position of the apparatus. A lifting system is operatively interconnected to the horizontal member, and a barbell allows selectable incremental vertical lifting and lowering distance during exercise. A control system including a safety switch for actuating the lifting system to vertically lift and lower the barbell is provided. A backup safety system is provided.

[0021] (9) U.S. Pat. No. 6,283,898 to Polidi.

[0022] U.S. Pat. No. 6,283,898 issued to Polidi on Sep. 4, 2001 in class 482 and subclass 104 teaches a mechanical weightlifting machine in which the machine has a support structure with an elevated pivot having a pivot axis and an articulating mechanism engaging the pivot. The articulating mechanism has at least one articulating structure with a lever arm having a depending link connected to the weight being used by the weightlifter. The articulating structure has an adjustment mechanism with a displaceable connection device connected to a counterweight. The adjustment mechanism has apparatus for moving the displaceable connection device relative to the pivot axis and actuation apparatus for actuating the apparatus for moving, in order to vary the effective weight removed from or applied to the weight being used by the weightlifter.

[0023] (10) U.S. Pat. No. 6,293,892 to Slawinski et al.

[0024] U.S. Pat. No. 6,293,892 issued to Slawinski et al. on Sep. 25, 2001 in class 482 and subclass 104 teaches a self-spotting apparatus for free-weights, which provides two cable assemblies with one end of each cable assembly attached to a free-weight assembly and the opposite end attached to respective linear weight-support assemblies via respective weight-responsive engagement blocks. Guide rods allow vertical motion of the engagement blocks and maintain engagement orientation relative to the support assemblies. The engagement blocks engage the respective support assemblies for static support of the free-weight assembly. Lifting of the substantial weight of the free-weight assembly and activation of disengagement bias is required to disengage the engagement blocks from the respective support assemblies to allow free motion of the free-weight assembly. The apparatus provides self-spotting for barbells and dumbbells.

[0025] (11) U.S. Pat. No. 6,537,182 to Slawinski et al.

[0026] U.S. Pat. No. 6,537,182 issued to Slawinski et al. on Mar. 25, 2003 in class 482 and subclass 104 teaches a self-spotting apparatus for free-weights, which provides two cable assemblies with one end of each cable assembly attached to a free-weight assembly and the opposite end attached to respective linear weight-support assemblies via respective weight-responsive engagement blocks. Guide rods allow vertical motion of the engagement blocks and maintain engagement orientation relative to the support assemblies. The engagement blocks engage the respective support assemblies for static support of the free-weight assembly. Lifting of the substantial weight of the free-weight assembly and activation of disengagement bias is required to disengage the engagement blocks from the respective support assemblies to allow free motion of the free-weight assembly. The apparatus provides self-spotting for barbells and dumbbells.

[0027] (12) U.S. Pat. No. 6,669,607 to Slawinski et al.

[0028] U.S. Pat. No. 6,669,607 issued to Slawinski et al. on Dec. 30, 2003 in class 482 and subclass 104 teaches a barbell and dumbbell safety spotting apparatus including a frame, two booms pivotally mounted to and supported by the frame, two cables extending from the booms, two reciprocating drives operably connected to the cables, and a clutch operably connected to the reciprocating drives to provide independent reciprocating movement of the cables. The cables are connectable to a free-weight assembly including a barbell assembly or dumbbell assembly to provide reciprocating vertical movement of the weight assembly in a free-weight fashion. The free-weight assembly includes at least one hand switch for engaging and disengaging the free-weight assembly from the reciprocating drives.

[0029] (13) United States Patent Application Publication No. 2004/0092369 to Slawinski et al.

[0030] United States Patent Application Publication Number 2004/0092369 published to Slawinski et al. on May 13, 2004 in class 482 and subclass 104 teaches a dumbbell clamp for a barbell and dumbbell safety spotting apparatus, which utilizes two spaced-apart plates, each having a notch for retaining the grip of a dumbbell. A spring-biased lock bar locks the dumbbell grip in the notches during normal use. A clamp bore is provided for secure the dumbbell clamp to a cable by use of a hook. A hand switch receptacle provides an electrical connector from a hand switch on the dumbbell clamp to the safety spotting apparatus.

[0031] It is apparent that numerous innovations for weight lifting related devices have been provided in the prior art that are adapted to be used. Furthermore, even though these innovations may be suitable for the specific individual purposes to which they address, however, they would not be suitable for the purposes of the embodiments of the present invention as heretofore described.

[0032] Thus, an object of the embodiments of the present invention is to provide a safety device for spotting a user of a barbell without a need for human intervention, which avoids the disadvantages of the prior art.

[0033] Briefly stated, another object of the embodiments of the present invention is to provide a safety device for spotting a user of a barbell without a need for human intervention. The device includes a frame, an interface ring assembly, and electrical/electronic apparatus. The frame rests on a level surface. The interface ring assembly is operatively connected to the frame, and interfaces with the barbell. The electrical/electronic apparatus is operatively connected to the interface ring assembly, and spots the user of the barbell without the need for the human intervention.

[0034] The novel features considered characteristic of the embodiments of the present invention are set forth in the appended claims. The embodiments of the present invention themselves, however, both as to their construction and their method of operation together with additional objects and advantages thereof will be best understood from the following description of the specific embodiments when read and understood in connection with the accompanying drawing.

A. General.

• [0041] 10 safety device of embodiments of present invention for spotting user 12 of barbell 14 without need for human intervention
• [0042] 12 user of barbell 14
• [0043] 14 barbell.
  B. Overall Configuration of Safety Device 10.
• [0044] 16 frame for resting on level surface 22
• [0045] 18 interface ring assembly for interfacing with barbell 14
• [0046] 20 electrical/electronic apparatus for spotting user 12 of barbell 14 without human intervention
• [0047] 22 level surface
  C. Specific Configuration of Frame 16.
• [0048] 24 base of frame 16 for resting on level surface 22
• [0049] 26 pair of uprights of frame 16
• [0050] 28 overhead of frame 16
• [0051] 30 three members of base 24 of frame 16
• [0052] 32 transverse portion of three members 30 of base 24 of frame 16
• [0053] 34 pair of axial portions of three members 30 of base 24 of frame 16
• [0054] 36 pair of intersection points of three members 30 of base 24 of frame 16
• [0055] 38 lower end of each upright of pair of uprights 26 of frame 16
• [0056] 40 upper end of each upright of pair of uprights 26 of frame 16
• [0057] 42 pair of lower gusset plates of frame 16
• [0058] 44 pair of upper gusset plates of frame 16
• [0059] 46 bench of frame 16 for resting on level surface 22 and for supporting user 12 of barbell 14
• [0060] 48 spotter stand of bench 46 of frame 16 for supporting barbell 14
• [0061] 50 foot stand of bench 46 of frame 16
• [0062] 52 spine of bench 46 of frame 16 for supporting user 12 of barbell 14 in lying position
• [0063] 54 pad of bench 46 of frame 16
  D. Specific Configuration of Interface Ring Assembly 18.
• [0064] 56 winch of interface ring assembly 18
• [0065] 58 pair of cables of interface ring assembly 18
• [0066] 60 lower ends of pair of cables 58 of interface ring assembly 18, respectively
• [0067] 62 pair of interface rings of interface ring assembly 18 for receiving barbell 14
• [0068] 64 primary through bore of each interface ring of pair of interface rings 62 of interface ring assembly 18 for noncapturingly receiving barbell 14
• [0069] 66 upper end of each interface ring of pair of interface rings 62 of interface ring assembly 18
• [0070] 68 lower end of each interface ring of pair of interface rings 62 of interface ring assembly 18
• [0071] 70 secondary through bore of upper end 66 of each interface ring of pair of interface rings 62 of interface ring assembly 18
• [0072] 72 barbell-bottom-out sensor of one interface ring of pair of interface rings 62 of interface ring assembly 18
• [0073] 74 lower extreme of primary through bore 64 of one interface ring of pair of interface rings 62 of interface ring assembly 18 for shutting down winch 56 of interface ring assembly 18 when barbell 14 is dropped
• [0074] 76 barbell-following sensor of one interface ring of pair of interface rings 62 of interface ring assembly 18 for causing pair of interface rings 62 of interface ring assembly 18 to follow barbell 14 in primary through bore 64 of one interface ring 62 of interface ring assembly 18 so as to keep pair of cables 58 of interface ring assembly 18 taut
  E. Specific Configuration of Electrical/Electronic Apparatus 20.
• [0075] 77 controller housing of electrical/electronic apparatus 20
• [0076] 78 power source interface of electrical/electronic apparatus 20 for interfacing with power source 80 to power safety device 10
• [0077] 80 power source to power safety device 10
• [0078] 82 ON/OFF switch of electrical/electronic apparatus 20
• [0079] 84 circuit breaker of electrical/electronic apparatus 20
• [0080] 86 relay of electrical/electronic apparatus 20
• [0081] 88 step-down transformer of electrical/electronic apparatus 20 for stepping down power source 80 from 110V to 24V
• [0082] 90 amplifier of electrical/electronic apparatus 20 for amplifying 24V power
• [0083] 92 motor of electrical/electronic apparatus 20
• [0084] 94 pair of limit switches of electrical/electronic apparatus 20 for disconnecting relay 86 of electrical/electronic apparatus 20 when barbell 14 goes all way up to overhead 28 of frame 16
• [0085] 96 CPU of electrical/electronic apparatus 20
• [0086] 98 first OR gate of electrical/electronic apparatus 20
• [0087] 100 second OR gate of electrical/electronic apparatus 20
• [0088] 102 third OR gate of electrical/electronic apparatus 20
• [0089] 103 fourth OR gate of electrical/electronic apparatus 20
• [0090] 104 first emergency feed of fourth OR gate 103 of electrical/electronic apparatus 20
• [0091] 106 second emergency feed of fourth OR gate 103 of electrical/electronic apparatus 20
• [0092] 108 third emergency feed of fourth OR gate 103 of electrical/electronic apparatus 20
• [0093] 110 fourth emergency feed of fourth OR gate 103 of electrical/electronic apparatus 20
• [0094] 114 encoder of electrical/electronic apparatus 20
• [0095] 116 emergency foot pedal of electrical/electronic apparatus 20
• [0096] 118 emergency voice-activated control of electrical/electronic apparatus 20
• [0097] 120 emergency stop button of electrical/electronic apparatus
• [0098] 122 analog-to-digital converter of electrical/electronic apparatus 20
• [0099] 124 feed of first OR gate 98 of electrical/electronic apparatus 20
• [0100] 126 jog up button of electrical/electronic apparatus 20
• [0101] 128 feed of second OR gate 100 of electrical/electronic apparatus 20
• [0102] 130 jog down button of electrical/electronic apparatus 20

A. General.

[0103] Referring now to the figures, in which like numerals indicate like parts, and particularly to FIG. 1, which is a diagrammatic perspective view of the safety device of the embodiments of the present invention spotting a user of a barbell without a need for human intervention, the safety device of the embodiments of the present invention is shown generally at 10 for spotting a user 12 of a barbell 14 without a need for human intervention.

B. The Overall Configuration of the Safety Device 10.

[0104] The safety device 10 comprises a frame 16, an interface ring assembly 18, and electrical/electronic apparatus 20. The frame 16 is for resting on a level surface 22. The interface ring assembly 18 is operatively connected to the frame 16, and is for interfacing with the barbell 14. The electrical/electronic apparatus 20 is operatively connected to the interface ring assembly 18, and is for spotting the user 12 of the barbell 14 without a need for the human intervention.

C. The Specific Configuration of the Frame 16.

[0105] The frame 16 comprises a base 24, a pair of uprights 26, and an overhead 28. The base 24 of the frame 16 is for resting on the level surface 22. The pair of uprights 26 of the frame 16 extend upwardly from the base 24 of the frame 16. The overhead 28 of the frame 16 extends forwardly from the pair of uprights 26 of the frame 16.

[0106] The base 24 of the frame 16 comprises three members 30. Each member 30 of the base 24 of the frame 16 is slender, elongated, and straight. The three members 30 of the base 24 of the frame 16 form an exaggerated H configuration having a transverse portion 32 connecting a pair of axial portions 34 at a pair of intersection points 36.

[0107] Each upright 26 of the frame 16 is slender, elongated, straight, and has a lower end 38 and an upper end 40. The lower end 38 of each upright 26 of the frame 16 is connected to an associated intersection point 36 of the three members 30 of the base 24 of the frame 16, and an associated upright 26 of the frame 16 extends upwardly therefrom to the upper end 40 of the associated upright 26 of the frame 16.

[0108] The overhead 28 of the frame 16 is flat and sheet-like, and is connected to, and extends cantileverly forwardly from, the upper end 40 of each upright 26 of the frame 16.

[0109] The frame 16 further comprises a pair of lower gusset plates 42. The pair of lower gusset plates 42 of the frame 16 further connect the pair of axial portions 34 of the three members 30 of the base 24 of the frame 16 to the lower ends 38 of the pair of uprights 26 of the frame 16, respectively.

[0110] The frame 16 further comprises a pair of upper gusset plates 44. The pair of upper gusset plates 44 of the frame 16 further connect the overhead 28 of the frame 16 to the upper ends 40 of the pair of uprights 26 of the frame 16, respectively.

[0111] The frame 16 further comprises a bench 46. The bench 46 of the frame 16 is disposed between the pair of axial portions 34 of the three members 30 of the base 24 of the frame 16, is for resting on the level surface 22, and is for supporting the user 12 of the barbell 14.

[0112] The bench 46 of the frame 16 comprises a spotter stand 48, a foot stand 50, a spine 52, and a pad 54. The spotter stand 48 of the bench 46 of the frame 16 is for supporting the barbell 14. The spine 52 of the bench 46 of the frame 16 extends forwardly from the spotter stand 50 of the bench 46 of the frame 16 to the foot stand 50 of the bench 46 of the frame 16, supports the pad 54 of the bench 46 of the frame 16, and is for supporting the user 12 of the barbell 14 in a lying position.

D. The Specific Configuration of the Interface Ring Assembly 18.

[0113] The interface ring assembly 18 comprises a winch 56. The winch 56 of the interface ring assembly 18 is disposed on the overhead 28 of the frame 16.

[0114] The interface ring assembly 18 further comprises a pair of cables 58. The pair of cables 58 of the interface ring assembly 18 reeve on the winch 56 of the interface ring assembly 18, and depend therefrom into lower ends 60 for being disposed in proximity to the barbell 18.

[0115] The interface ring assembly 18 further comprises a pair of interface rings 62. The pair of interface rings 62 of the interface ring assembly 18 depend from the lower ends 60 of the pair of cables 58 of the interface ring assembly 18, respectively, and are for receiving the barbell 14.

[0116] The specific configuration of each interface rings 62 of the interface ring assembly 18 can best be seen in FIGS. 2-4, which are, respectively, an enlarged diagrammatic side elevational view of an interface ring of the safety device of the embodiments of the present invention identified by ARROW 2 in FIG. 1, a diagrammatic cross sectional view taken along LINE 3-3 in FIG. 2, and an enlarged diagrammatic front view of an interface ring of the interface ring assembly of the safety device of the embodiments of the present invention interfacing with a barbell identified by ARROW 4 in FIG. 1, and as such, will be discussed with reference thereto.

[0117] Each interface ring 62 of the interface ring assembly 18 is thin, generally oval-shaped, and has a primary through bore 64 therethrough, an upper end 66, and a lower end 68. The primary through bore 64 of each interface ring 62 of the interface ring assembly 18 is for noncapturingly receiving the barbell 14.

[0118] The upper end 66 of each interface ring 62 of the interface ring assembly 18 has a secondary through bore 70 therethrough. The secondary through bore 70 of each interface ring 62 of the interface ring assembly 18 securingly receives the lower end 60 of an associated cable 58 of the interface ring assembly 18.

[0119] One interface ring 62 of the interface ring assembly 18 has a barbell-bottom-out sensor 72. The barbell-bottom-out sensor 72 of the one interface ring 62 of the interface ring assembly 18 electrically communicates with the winch 56 of the interface ring assembly 18, is disposed at a lower extreme 74 of the primary through bore 64 of the one interface ring 62 of the interface ring assembly 18, and is for shutting down the winch 56 of the interface ring assembly 18 when the barbell 14 is dropped.

[0120] The one interface ring 62 of the interface ring assembly 18 further has a barbell-following sensor 76. The barbell-following sensor 76 of the one interface ring 62 of the interface ring assembly 18 is disposed at the lower end 68 of the one interface ring 62 of the interface ring assembly 18, electrically communicates with the winch 56 of the interface ring assembly 18, and is for causing the pair of interface rings 62 of the interface ring assembly 18 to follow the barbell 14 in the primary through bore 64 of each interface ring 62 of the interface ring assembly 18 so as to keep the pair of cables 58 of the interface ring assembly 18 taut.

E. The Specific Configuration of the Electrical/Electronic Apparatus 20.

[0121] The specific configuration of the electrical/electronic apparatus 20 can best be seen in FIG. 5, which is a block diagram of the safety device of the embodiments of the present invention shown in FIG. 1, and as such, will be discussed with reference thereto.

[0122] The electrical/electronic apparatus 20 comprises a controller housing 77. The controller housing 77 of the electrical/electronic apparatus 20 is disposed on the frame 16 (FIG. 1).

[0123] The electrical/electronic apparatus 20 further comprises a power source interface 78. The power source interface 78 of the electrical/electronic apparatus 20 is for interfacing with a power source 80 to power the safety device 10.

[0124] The electrical/electronic apparatus 20 further comprises an ON/OFF switch 82. The ON/OFF switch 82 of the electrical/electronic apparatus 20 is disposed on the controller housing 77 of the electrical/electronic apparatus 20, electrically communicates with the power source interface 78 of the electrical/electronic apparatus 20, and selectively turns the safety device 100N and OFF.

[0125] The electrical/electronic apparatus 20 further comprises a circuit breaker 84. The circuit breaker 84 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, electrically communicates with the ON/OFF switch 82 of the electrical/electronic apparatus 20, and prevents overload of the safety device 10.

[0126] The electrical/electronic apparatus 20 further comprises a relay 86. The relay 86 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, electrically communicates with the circuit breaker 84 of the electrical/electronic apparatus 20, and operates heavy load needed for the safety device 10.

[0127] The electrical/electronic apparatus 20 further comprises a step-down transformer 88. The step-down transformer 88 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, electrically communicates with the relay 86 of the electrical/electronic apparatus 20, and is for stepping down the power source 80 from 110V to 24V.

[0128] The electrical/electronic apparatus 20 further comprises an amplifier 90. The amplifier 90 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, electrically communicates with the step-down transformer 88 of the electrical/electronic apparatus 20, and is for amplifying the 24V power.

[0129] The electrical/electronic apparatus 20 further comprises a motor 92. The motor 92 of the electrical/electronic apparatus 20 is disposed with the winch 56 of the interface ring assembly 18, electrically communicates with the amplifier 90 of the electrical/electronic apparatus 20, and operates the winch 56 of the interface ring assembly 18 up and down.

[0130] The electrical/electronic apparatus 20 further comprises a pair of limit switches 94. The pair of limit switches 94 of the electrical/electronic apparatus 20 are disposed on the overhead 28 of the frame 16 (FIG. 1), electrically communicate with the relay 86 of the electrical/electronic apparatus 20, and are for disconnecting the relay 86 of the electrical/electronic apparatus 20 when the barbell 14 goes all the way up to the overhead 28 of the frame 16.

[0131] The electrical/electronic apparatus 20 further comprises a CPU 96. The CPU 96 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, and electrically communicates with the amplifier 90 of the electrical/electronic apparatus 20 via a first OR gate 98 and a second OR gate 100.

[0132] The first OR gate 98 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, and tells the CPU 96 of the electrical/electronic apparatus 20 to have the winch 56 of the interface ring assembly 18 raise the pair of interface rings 62 of the interface ring assembly 18 up.

[0133] The second OR gate 100 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, and tells the CPU 96 of the electrical/electronic apparatus 20 to have the winch 56 of the interface ring assembly 18 lower the pair of interface rings 62 of the interface ring assembly 18 down to start over after an incident has occurred.

[0134] A third OR gate 102 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, and tells the CPU 96 of the electrical/electronic apparatus 20 to have the winch 56 of the interface ring assembly 18 stay at rest.

[0135] A fourth OR gate 103 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, electrically communicates with the CPU 96 of the electrical/electronic apparatus 20, tells the CPU 96 of the electrical/electronic apparatus 20 to have the winch 56 of the interface ring assembly 18 immediately stop and raise the pair of interface rings 62 of the interface ring assembly 18 to a predetermined height, and is feed by a first emergency feed 104, a second emergency feed 106, a third emergency feed 108, and a fourth emergency feed 110.

[0136] The electrical/electronic apparatus 20 further comprises an encoder 114. The encoder 114 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, electrically communicates with the motor 92 of the electrical/electronic apparatus 20 and the CPU 96 of the electrical/electronic apparatus 20, and feeds back to the CPU 96 of the electrical/electronic apparatus 20 position of the motor 92 of the electrical/electronic apparatus 20.

[0137] The first emergency feed 104 of the fourth OR gate 103 of the electrical/electronic apparatus 20 electrically communicates with an emergency foot pedal 116. The emergency foot pedal 116 of the electrical/electronic apparatus 20 is disposed on the foot stand 50 of the bench 46 of the frame 16 (FIG. 1), and when activated, activates the fourth OR gate 103 of the electrical/electronic apparatus 20.

[0138] The second emergency feed 106 of the fourth OR gate 103 of the electrical/electronic apparatus 20 electrically communicates with an emergency voice-activated control 118. The emergency voice-activated control 118 of the electrical/electronic apparatus 20 is disposed on the controller housing 77 of the electrical/electronic apparatus 20, and when activated, activates the fourth OR gate 103 of the electrical/electronic apparatus 20.

[0139] The third emergency feed 108 of the fourth OR gate 103 of the electrical/electronic apparatus 20 electrically communicates with an emergency stop button 120. The emergency stop button 120 of the electrical/electronic apparatus 20 is disposed on the controller housing 77 of the electrical/electronic apparatus 20, and when activated, activates the fourth OR gate 103 of the electrical/electronic apparatus 20.

[0140] A feed 124 of the first OR gate 98 of the electrical/electronic apparatus 20 electrically communicates with a jog up button 126. The jog up button 126 of the electrical/electronic apparatus 20 is disposed on the controller housing 77 of the electrical/electronic apparatus 20, and when activated, activates the first OR gate 98 of the electrical/electronic apparatus 20, to thereby cause the interface rings 62 to accordingly raise the barbell 14.

[0141] A feed 128 of the second OR gate 100 of the electrical/electronic apparatus 20 electrically communicates with a jog down button 130. The jog down button 130 of the electrical/electronic apparatus 20 is disposed on the controller housing 77 of the electrical/electronic apparatus 20, and when activated, activates the second OR gate 100 of the electrical/electronic apparatus 20, to thereby cause the interface rings 62 to accordingly lower the barbell 14.

[0142] The fourth emergency feed 110 of the fourth OR gate 103 of the electrical/electronic apparatus 20 electrically communicates with the barbell-bottom-out sensor 72 of the one interface ring 62 of the interface ring assembly 18, and is activated when the barbell-bottom-out sensor 72 of the one interface ring 62 of the interface ring assembly 18 is activated, thereby activating the fourth OR gate 103 of the electrical/electronic apparatus 20.

[0143] The electrical/electronic apparatus 20 further comprises an analog-to-digital converter 122. The analog-to-digital converter 122 of the electrical/electronic apparatus 20 is disposed in the controller housing 77 of the electrical/electronic apparatus 20, electrically communicates with the first OR gate 98 of the electrical/electronic apparatus 20, the second OR gate 100 of the electrical/electronic apparatus 20, the third OR gate 102 of the electrical/electronic apparatus 20, and the barbell-following sensor 76 of the one interface ring 62 of the interface ring assembly 18, to thereby allow use of only one barbell-following sensor 76 of the one interface ring 62 of the interface ring assembly 18 while converting analog to digital for smoother operation of the safety device 10.

F. The Conclusions.

[0144] It will be understood that each of the elements described above or two or more together may also find a useful application in other types of constructions differing from the types described above.

[0145] While the embodiments of the present invention have been illustrated and described as embodied in a safety device for spotting a user of a barbell without a need for human intervention, however, they are not limited to the details shown, since it will be understood that various omissions, modifications, substitutions, and changes in the forms and details of the embodiments of the present invention illustrated and their operation can be made by those skilled in the art without departing in any way from the spirit of the embodiments of the present invention.

[0146] Without further analysis the foregoing will so fully reveal the gist of the embodiments of the present invention that others can by applying current knowledge readily adapt them for various applications without omitting features that from the standpoint of prior art fairly constitute characteristics of the generic or specific aspects of the embodiments of the present invention.