Caster direction-locking mechanism for mobile cart

Details Caster direction-locking mechanism for mobile cart Caster direction-locking mechanism for mobile cart

1988-09-12

1989-10-24

Mitchell, David M.

Land vehicles

Wheeled

Stable vehicles, handle-propelled

188 112, 188 19, 280 47371, 280 793, B62B 504

Patent

active

048756962

ABSTRACT:
A caster direction-locking mechanism for a mobile cart improves agility and stability of the cart during high speed movement. This cart includes four casters supporting it for rolling movement. Each caster has a wheel rotatable about a horizontal axis and is mounted with the cart for swiveling movement about a generally vertical axis. The caster direction-locking mechanism selectably locks two adjacent casters against such swiveling movement and with the horizontal axes thereof in generally mutually parallel relation. A handle is mounted on the cart for steering it and an actuator is associated with the handle for actuating the caster direction-locking mechanism to selectably lock and unlock the two casters against swiveling movement.

REFERENCES:
patent: 2114586 (1938-04-01), Bowen
patent: 2253824 (1941-08-01), Townsend et al.
patent: 3070828 (1963-01-01), Clinton et al.
patent: 3636586 (1972-01-01), Bollinger et al.
patent: 4011913 (1977-03-01), Davies et al.

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