Caster lock indicator

Details Caster lock indicator Caster lock indicator

2005-02-15

2005-02-15

Graham, Matthew C. (Department: 3683)

Brakes

To retard rolling of caster

C016S03500D, C188S00111E

Reexamination Certificate

active

06854567

ABSTRACT:
A caster lock indicator adapted to operate to indicate a locked state or an unlocked state of a caster. The caster lock indicator includes a stopper spring that operates in response to a rotary motion of a stopper lever when it is operated to unlock the caster. As the stopper lever is rotated around a lever support member, the stopper spring is turned about a stopper spring support member to lock the wheel against any swiveling motion. In the unlocked state, a lock indicator surface of a lock indicator plate can be visually recognizable through an indicator window of the stopper lever. When the caster is locked, the lock indicator plate is driven to slide so that the part for indicating the locked state of the lock indicator surface of the lock indicator plate comes to be visually recognizable through the indicator window.

REFERENCES:
patent: 2972163 (1961-02-01), Ross et al.
patent: 4035864 (1977-07-01), Schroder
patent: 4941552 (1990-07-01), Screen
patent: 5181587 (1993-01-01), Masatoshi
patent: 5988323 (1999-11-01), Chu
patent: 1132401 (1989-05-01), None
patent: 7007201 (1994-04-01), None
patent: 8005843 (1996-01-01), None
patent: 11321208 (1999-11-01), None

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