Castor incorporating a braking mechanism

Details Castor incorporating a braking mechanism Castor incorporating a braking mechanism

1986-06-16

1988-05-31

Silverberg, Fred

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Casters

Locked

16 33, B60B 3302

Patent

active

047471808

ABSTRACT:
A castor has a brake rod (20;120;220) extending through a hollow stem (10) on which a body (4) carrying a pair of castor wheels (2) is rotatably mounted. The brake rod is moveable substantially vertically between an inoperative position and a braking position in which its lower end engages the surface on which the wheel (2) rest. Opposition to braking movement can be provided by a return spring (39;222) or by a spring arm (122). Movement of the brake rod can be effected by a cam (140) acting on the spring arm (122) or by a cam (40;240) acting on a lever (35;230) engaging the upper end of the brake rod. The brake rod (10) can be arranged to have an intermediate position in which rotation of the castor body (4) is prevented.

REFERENCES:
patent: 1133798 (1915-03-01), Hall
patent: 1174582 (1916-03-01), Irrgang
patent: 3914821 (1975-10-01), Screen
patent: 4339842 (1982-07-01), Fontana etal.
patent: 4364148 (1982-12-01), McVicker
patent: 4503943 (1985-03-01), Tsukui

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