Drain Trap Assembly

The present invention relates to the field of plumbing. More particularly, the invention relates to an improvement in a drain trap which makes cleaning of the drain trap easier. Even more particularly, my invention relates to a removable container associated with a drain trap. In even greater particularity, my invention includes a flexible container which can be compressed to reduce the fluid level therein prior to removal.

In the field of plumbing sedimentaceous deposits and subsequent obstruction of a plumbing line as a result of build up of sediment within the drain trap has long been a problem. Removal of a drain trap to clear such an obstruction is a time consuming and messy job, which usually results in water spillage on the plumber and the surrounding flooring. Also, it is difficult to reattach the joint in a leak proof condition.

Numerous attachments have been designed which either make access to the obstruction easier or removal of the sediment easier. For example, U.S. Pat. No. 4,546,789 discloses a valve which allows easy entry of a mechanical cleaning apparatus into the obstructed sewer or drain line. U.S. Pat. No. 644,142 discloses a detachable cup containing germicide or disinfectant. The cup collects and disinfects the sediment simultaneously. The cup is detachable for discharge of the sediment. U.S. Pat. No. 4,179,762 discloses a modified cylindrical base portion to provide for visual inspection and cleaning.

The above disclosed attachments, however, fail to eliminate the problem of spillage of residual fluid on the plumber and the surrounding flooring. In particular, the cup which collects and disinfects the sediment fails to eliminate the release of residual fluid when the cup is removed to be emptied or recharged with disinfectant. The valve which allows for easy access to the obstruction by a mechanical cleaning device fails to prevent the release of the residual fluid when the cleaning device is introduced into the obstructed line. U.S. Pat. No. 4,179,762 provides for visual inspection of the obstruction but fails to provide visual inspection without the drain trap having to be opened and the residual fluid being released either on the plumber or surrounding flooring.

It is the object of the present invention to provide an improved drain trap assembly which reduces the volume of residual fluid in a obstructed drain trap prior to removal of the obstruction.

Yet another object of the present invention is to provide a drain trap which will allow removal of the obstruction with reduced fluid spillage on the plumber and surrounding flooring or cabinet.

Yet another object of the present invention is to allow for visual inspection of the volume of collected sediment without releasing residual fluid.

Other objects of my invention will become apparent from the detailed description of the preferred embodiment.

Apparatus embodying features of my invention are depicted in the accompanying drawings which form a portion of this disclosure and wherein:

FIG. 1 is a perspective view of the improved drain trap assembly;

FIG. 2 is a view of the means for collecting compressed;

FIG. 3 is cross sectional view of the V-shaped tubular conduit; and

FIG. 4 is a second embodiment of the means for collecting.

Referring to the drawings for a clearer understanding of the invention, FIG. 1 shows a general view of the improved drain trap attached to a sink 11 and a sewer line 12. As is clearly shown in FIG. 3, the improved drain trap is a V-shaped tubular conduit 13 . The conduit has an inlet portion 14 operatively connected to receive fluid from the upstream source, such as a sink drain, forming a junction 15 with an outlet portion 16 operatively connected to discharge fluid into a sewage system. The inlet portion 14 and the outlet portion 16 are of a sufficient downward angle to avoid accumulation of sediment 23 in either the inlet or outlet portions. At the junction is a downwardly extending tubular extension 18. The tubular extension 18 communicates with the conduit at the junction 15 and terminates in an outlet opening 19 as shown in FIG. 3. The tubular extension 18 has a valve 21 connected at its outlet opening 19 to selectively open and close the outlet opening 19. A detachable compressible transparent container 22 for collecting sediment is connected to the outlet opening subjacent the valve 21 in any suitable manner, such as by a threaded connection or by a snap fit connection.

As shown in FIG. 1, sediment 23 deposits in the container 22 along with fluid 24. When a visual inspection reveals the need for cleaning, the sediment may be removed as follows. The container 22 is manually compressed to reduce the volume as illustrated in FIG. 2. The compression of the container 22 forces the residual fluid 24 upwardly through the valve 21, so that the valve can be closed to prevent flow of the fluid back into the container 22. After the valve 21 is closed, the container can be allowed to assume its normal volume and removed. In as much as the volume of fluid is less than the volume of the container and the valve 21 prevents back flow of residual fluid in the conduits, the sediment 23 can be discarded without spillage of the unclean fluid 24.

The container can be manufactured to be disposable, thus the container would not have to be rinsed or flushed of the sediment. Further, for greater control over the expulsion of the residual fluid, FIG. 4 shows a second embodiment of the collecting container 22a which is an accordion-like container which may be compressed upwardly without exerting lateral unsettling forces on the sediment.

The container can be manufactured to be an expandable bag. Functioning like a balloon being inflated, the bag would expand as sediment collected in the big. The container could be made translucent allowing for visual inspection of the volume of sediment present in the container.

While I have shown my invention in one embodiment it will be obvious to those skilled in the art that is not so limited but is susceptible of various changes and modifications without departing from the spirit thereof.