Brakes – Vehicle – Cart
Reexamination Certificate
1999-05-07
2001-05-01
Butler, Douglas C. (Department: 3613)
Brakes
Vehicle
Cart
C188S001120, C016S03500D
Reexamination Certificate
active
06223864
ABSTRACT:
DESCRIPTION OF PRIOR ART
To detour damage done by shopping carts a device has been incorporated that locks the wheel at the bottom of the leg of the frame of the cart. Previous wheel braking devices have been developed for stopping the movement of the shopping cart or other equipment carts. In this case only one wheel is needed to immobilize the entire cart.
U.S. Pat. Nos. 2,905,275 and 5,012,550 disclose the use of a braking device to lock the cart wheel into a position thus not allowing movement of the wheel. U.S. Pat. No. 2,905,275 uses a U shape brake shoe to engage the wheel mechanism, which has to be applied by foot on one pedal and the other pedal is released. U.S. Pat. No. 5,012,550 uses an L shape, horizontal, two-arm lever that has to be depressed to move.
BACKGROUND OF INVENTION
Damage to personal property and persons occur each year from runaway shopping carts. Such damage is caused to automobiles, children left in shopping carts, and real property when the shopping cart strikes the object from lack of a braking system. This problem can be over come by introducing a braking wedge.
Generally, this braking wedge is assembled to use on a shopping cart having a frame, a basket mounted on the frame, front and rear wheels supporting the frame, which includes handles for pushing and guiding the cart from one place to another by the wheels, but can also be used on other wheeled equipment carts. This wedge can be sized to fit new and existing carts by the placement in a fixed position on a single wheel on the leg of the frame of the cart to immobilize the entire cart.
This present invention relates to a braking wedge constructed with only one moving part, is easily attached and is economical for shopping carts and other wheeled equipment carts. The means of holding the wheel in one position in response to the application of the insertion of the wedge into the wheel housing can detour accidents.
FIELD OF INVENTION
This invention relates to a braking system that stops shopping carts from rolling away on un-level ground.
SUMMARY OF INVENTION
The braking system consists of a braking wedge, with an extension bar, that when pressed into the wheel housing, it will set the wedge and restrain the shopping cart wheel from any movement.
To release the shopping cart wheel for movement the braking wedge extension bar is pulled upward with the shoe.
REFERENCES:
patent: 2738034 (1956-03-01), Levine
patent: 2905275 (1959-09-01), Kostolecki et al.
patent: 3881216 (1975-05-01), Fontana
patent: 5012550 (1991-05-01), Schlosser
patent: 5288089 (1994-02-01), Bowers et al.
patent: 5328000 (1994-07-01), Rutter et al.
patent: 5390942 (1995-02-01), Schuster et al.
patent: 5456336 (1995-10-01), Bopp
Hargett Michael Steven
Phelps Margaret
Butler Douglas C.
Rodriguez Pamela J.
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