Protective Cover

The invention comprises a cover with a heavy weight cloth backing with oval dish shaped plastic units fastened thereto in an overlapping water proof fashion. Rain or hail striking the cover will necessarily strike the upper surface of individual units at an angle reducing direct hail impact. The glancing impact is further spread by the overlapping dish shaped units wherein the "footprint" through the cloth to the underlying metal or material being protected is about double the perimeter of the single unit. Each single unit is fastened to the base cloth to prevent wind from raising the units to cause a non rain proof covering. In units designed for machinery covers tie down straps are integrally fastened to the base cloth with grommets in the cloth perimeter. Grommets and tie down straps allow lacing smaller units together and facilitate fastening of the protective cover where needed.

FIG. 1 shows the underside of a single protective unit.

FIG. 2 shows a side view of the first embodiment of a single protective unit.

FIG. 3 shows a side view of a second embodiment of a single protective unit.

FIG. 4 indicates how the single units are used to provide a rain and hail proof covering.

FIG. 5 indicates a rivet type fastener for fastening of individual units to a flexible cloth base.

The invention may best be described from the drawings. In FIG. 1 an oval dished protector unit 1 with tab 3 and three holes 5 is shown. The dished shaped protector unit 1 may be from two to eight inches long with an oblong piece of foam 7 approximately one fourth inch thick and sized to cover about one half of the inner area to act as reinforcement and as a cushion to further spread the impact force. With nylon rivets or similar fasteners located as shown at the base of tab 3 the wind will cause only a small lifting of the main body 1 of each protector unit.

In FIG. 2 a side view of unit 1 is shown indicating structure of the first embodiment of the individual protector units with numbers as previously described and with the body of the unit all of one thickness.

FIG. 3 shows a second embodiment with the single protector unit 2 being similarly sized and shaped to unit 1 but with a thicker raised portion to preclude the necessity of using foam block 7, FIG. 1. Other numbers are as described.

In FIG. 4 the covering 9 is partially shown with small units 1 riveted into place to indicate water proof overlapping of the units 1 riveted on to a heavy strong cloth backing such as Nylon or acrylic 11. Sewing or stapling would also be an acceptable type of fastening. Note that hail stones or rain drops would always be striking a curved surface to reduce the force of a direct impact and the force of the glancing impact is spread over a relatively large surface. Calculations indicate that a two inch size hailstone should not dent an airplane wing that is properly covered with this invention. Tie down fasteners 15 are used for covering a piece of machinery such as an automobile or an airplane. When the unit is used as a roof cover the tiedown fasteners are omitted an the overall units with the cloth backing may be installed with conventional roofing staplers. The oval shaped single units may be from two to eight or ten inches in length.

FIG. 5 shows a Nylon rivet 13. The rivet is a preferred fastener but several other type fasteners would be satisfactory. By fastening at the base of tab 3, FIG. 1 the wind will not lift the small units enough to allow rain to enter.