Wheel restrainer for shopping carts

Details Wheel restrainer for shopping carts Wheel restrainer for shopping carts

1996-05-20

1997-05-13

Oberleitner, Robert

Brakes

To retard rolling of caster

16 35R, 188 29, B60B 3300

Patent

active

056283865

ABSTRACT:
A restrainer for shopping cart wheels is a strip of stainless steel or other resilient metal, bent into a generally C-shaped curve. The restrainer is compressed and inserted into the space between a shopping cart wheel and its frame; a shoulder and a tab on a straight end of the restrainer engage the wheel frame to hold the strip in place. A curved end of the restrainer bears against the wheel with sufficient force that resulting friction will prevent the cart from rolling freely down an incline of less than about 15.degree., while allowing the cart to be pushed by shoppers in the usual way. Corrugations in the curved midsection of the strip add stiffness to increase the amount of friction applied to the wheel.

REFERENCES:
patent: 2494696 (1950-01-01), Forbes
patent: 3298467 (1967-01-01), Darnell
patent: 4035864 (1977-07-01), Schroder
patent: 4114232 (1978-09-01), Umeda
patent: 4828057 (1989-05-01), Borchard
patent: 4835815 (1989-06-01), Mellwig et al.
patent: 5236066 (1993-08-01), O'Neal et al.
patent: 5390393 (1995-02-01), Reppert et al.

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