Turn wheel locking device

Details Turn wheel locking device Turn wheel locking device

1999-04-05

2000-12-19

Johnson, Brian L.

Land vehicles

Wheeled

Nesting vehicles

280 33991, 280 33992, 188 17, 188 19, 16 18R, 16 35R, B62D 3900

Patent

active

061618497

ABSTRACT:
A turn wheel locking device for use with shopping carts having at least one turn wheel. The locking device functions to automatically disable the cart when it is removed from a prescribed area by locking the turn wheel in a turned configuration so that the cart can travel only along a generally circular path.

REFERENCES:
patent: 4591175 (1986-05-01), Upton et al.
patent: 4772880 (1988-09-01), Goldstein et al.
patent: 5194844 (1993-03-01), Zelda
patent: 5315290 (1994-05-01), Moreno et al.
patent: 5357182 (1994-10-01), Wolfe et al.
patent: 5598144 (1997-01-01), Lace
patent: 5806862 (1998-09-01), Merryman et al.
patent: 5823302 (1998-10-01), Schweninger
patent: 5831530 (1998-11-01), Lace et al.

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