Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters – Locked
Reexamination Certificate
2011-04-26
2011-04-26
Mah, Chuck Y. (Department: 3677)
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Casters
Locked
Reexamination Certificate
active
07930802
ABSTRACT:
A castor includes an upright support post, a brake ring secured on the support post, a castor body rotatably mounted on the support post, two rollers rotatably mounted on the castor body, a first locking member movably mounted on the castor body, a second locking member movably mounted on the castor body, and a brake handle pivotally mounted on the castor body. Thus, when the castor is locked, each of the two rollers is locked onto and cannot be rotated relative to the castor body, and the castor body is locked onto and cannot be rotated relative to the support post, so that the castor will stop rotating when being braked so as to provide a double-braking effect.
REFERENCES:
patent: 5988323 (1999-11-01), Chu
patent: 6360851 (2002-03-01), Yang
patent: 6532624 (2003-03-01), Yang
patent: 6810560 (2004-11-01), Tsai
patent: 7707686 (2010-05-01), Chou
patent: 2009/0113671 (2009-05-01), Chu
patent: 2010/0000050 (2010-01-01), Tsai
patent: 2010/0170061 (2010-07-01), Lin
patent: 61033302 (1986-02-01), None
patent: 02283501 (1990-11-01), None
patent: 05310004 (1993-11-01), None
patent: 528016 (2003-04-01), None
Kamrath Alan
Kamrath & Associates PA
Mah Chuck Y.
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