Castor that is braked and positioned simultaneously

Details Castor that is braked and positioned simultaneously Castor that is braked and positioned simultaneously

2011-05-31

2011-05-31

Miller, William L. (Department: 3677)

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

Casters

Wheels

C016S03500D, C188S001120

Reexamination Certificate

active

07950108

ABSTRACT:
A castor includes a suspension unit, a castor body, a wheel unit, and a brake unit. The suspension unit includes an upright fixing bolt and a locking member. The wheel unit includes two rollers. The brake unit includes a positioning block, a sliding block, a biasing member, a drive member, and a braking pin. Thus, when the drive member of the brake unit is pressed, each of the rollers of the wheel unit is braked by and locked onto the castor body, and the castor body is locked onto the fixing bolt simultaneously, thereby locking the castor exactly and stably.

REFERENCES:
patent: 5368133 (1994-11-01), Yang
patent: 5617934 (1997-04-01), Yang
patent: 5632360 (1997-05-01), Melara
patent: 5988323 (1999-11-01), Chu
patent: 6360851 (2002-03-01), Yang
patent: 6619438 (2003-09-01), Yang
patent: 6662404 (2003-12-01), Stroh et al.
patent: 6725501 (2004-04-01), Harris et al.
patent: 7707686 (2010-05-01), Chou

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