Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Closure checks – Spring
Reexamination Certificate
2007-07-18
2010-12-07
Mah, Chuck Y. (Department: 3677)
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Closure checks
Spring
C016S082000
Reexamination Certificate
active
07845050
ABSTRACT:
A device for buffering the closing impact of furniture doors is disclosed. A valve (40) is mounted around a piston rob (23) of a piston (20) in such a fashion that an oil gap (41) is defined between the outer peripheral surface of the valve (40) and the inner peripheral surface of a cylinder (10), the valve having a recessed oil passageway (47) formed on an axial end surface. A protrusion element (50) has a plurality of oil grooves (51) A check valve (60) slides reciprocally along the compression direction of oil. When an external load is exerted to the piston (20), a check valve (60) moves along with the protrusion element (50) and simultaneously oil contained in the oil chamber (11) flows through the recessed oil passageway (47) via the oil grooves (51) defined between the protrusion element (50) to absorb an impact generated during the closing of the furniture door.
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Haynes and Boone LLP
Mah Chuck Y.
Samsung Precision Industrial Co., Ltd.
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