Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Including means to hold or retard hinged members against...
Patent
1997-05-20
1998-09-01
Mah, Chuck
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Hinge
Including means to hold or retard hinged members against...
16342, 16303, E05D 1110
Patent
active
057993718
ABSTRACT:
A pivoting joint connected between a first part and a second part of an instrument, permitting the first part to be turned relative to the second part and retained at one of a series of angular positions, including a first coupling member with a ratchet fastened to the first part of the instrument, a shaft mounted in an axle hole in the second part of the instrument, a sleeve and a spring holder mounted around the shaft within the axle hole of the second part of the instrument and forced by spring means to hold down the shaft, and a second coupling member fixedly mounted on the shaft and having a ratchet meshed with the ratchet of the first coupling member.
REFERENCES:
patent: 294746 (1884-03-01), Straup et al.
patent: 975097 (1910-11-01), Wright
patent: 5109571 (1992-05-01), Ohshima et al.
patent: 5398378 (1995-03-01), Lin
patent: 5715576 (1998-02-01), Liu
Mah Chuck
Tamarack Technologies Inc.
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