Wheel assembly

Details Wheel assembly Wheel assembly

1990-03-26

1991-08-20

Oberleitner, Robert J.

Brakes

To retard rolling of caster

16 35R, 188 19, 188 83, 280 33994, B60B 3300, B62B 504

Patent

active

050406418

ABSTRACT:
A wheel assembly having particular adaptability for use on a shopping cart and which importantly serves to prevent shopping cart movement after release by the user. Briefly, the wheel assembly includes an axle, a hub, a tire carrying rim overlying said hub, and a series of lateral grooves on the outer surface of the hub and selectively engagable by, for example, spring-loaded ball catches mounted on portions of the rim. When one of the ball catches is received within a lateral groove, wheel rotation is limited (until overcome by the user's force). The preceding serves to prevent unwanted cart movement and promotes safety in a cart location area.

REFERENCES:
patent: 2425574 (1947-08-01), Stewack
patent: 2498626 (1950-02-01), Bivans
patent: 2707794 (1955-05-01), Kramsak
patent: 3002589 (1961-10-01), Cook
patent: 3102580 (1963-09-01), Greegor
patent: 3623575 (1971-11-01), Joseph et al.
patent: 3735838 (1973-05-01), Greenleaf
patent: 3957144 (1976-05-01), Opyrchal
patent: 4110866 (1978-09-01), Ishii
patent: 4653764 (1987-03-01), McNeill

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