Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Closers – Spring and lever
Reexamination Certificate
2006-11-14
2006-11-14
Mah, Chuck Y. (Department: 3677)
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Closers
Spring and lever
C016S066000
Reexamination Certificate
active
07134168
ABSTRACT:
A door closer comprises a cylinder with an extensible and retractable rod. The cylinder has a first end adapted to be secured to a door frame, while the rod has an outer end adapted to be connected to the door. The rod has a series of grooves along the length. A pawl is mounted in a housing on one end of the cylinder and is adapted for movement between an engaged position engaging one of the grooves of the rod and a disengaged position. A button on the housing is adapted to be depressed to move the pawl to the engaged position, whereby the pawl holds the door open in a selected position. The pawl can be disengaged from the rod merely by opening the door slightly, after which the spring-biased rod automatically pulls the door to the closed position.
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patent: 11082589 (1999-03-01), None
patent: WO 8805852 (1988-08-01), None
patent: WO 9642077 (1996-12-01), None
Betteli, Inc. Hong Kong
Mah Chuck Y.
McKee Voorhees & Sease, P.L.C.
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