Top-mounted door closer

Details Top-mounted door closer Top-mounted door closer

1997-09-26

1999-05-11

Mah, Chuck Y.

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

Closers

Spring

16 53, 16 60, E05F1/08;3/20

Patent

active

059014121

ABSTRACT:
A door closer actuated by an eccentric cam plate includes a one-piece piston that is displaced axially by the rotation of the eccentric cam plate. The one-piece piston includes a damping piston portion located axially on one side of the eccentric cam plate and a spring support element located on the opposite side of the eccentric cam plate. The one-piece piston incorporates in a unitary piece both functions of a separate damping piston and spring support element to increase the relative efficiency of the door closer.

REFERENCES:
patent: 4785493 (1988-11-01), Tillmann et al.
patent: 5417013 (1995-05-01), Tillmann
patent: 5535514 (1996-07-01), Lucas

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