Door closing device

Details Door closing device Door closing device

2005-07-19

2005-07-19

Thompson, II, Hugh B. (Department: 3634)

Movable or removable closures

With operator for movably mounted closure

Operator drives closure along guide

C049S118000

Reexamination Certificate

active

06918211

ABSTRACT:
A device for urging a door into a first position includes a spring apparatus (16) including a winding drum (22) having a conical outer peripheral surface (27) and a torsional spring (24) for imparting a relatively constant urging force to a cable23secured to the door in the direction of the first position.

REFERENCES:
patent: 3756585 (1973-09-01), Mihalcheon
patent: 6142260 (2000-11-01), Shin
patent: 6164014 (2000-12-01), McDowell et al.
patent: 6321489 (2001-11-01), Murofushi et al.
patent: 6401793 (2002-06-01), Martin

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