Door mechanism spring assembly

Details Door mechanism spring assembly Door mechanism spring assembly

1985-06-17

1988-08-23

Jordan, M.

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

Hinge

Resiliently biased hinge

16306, E05D 1108, E05F 300

Patent

active

047650265

ABSTRACT:
A spring assembly for counterbalancing a door includes a compression spring and tension members engaging opposite ends of the spring. The tension members can be connected in a conventional door mechanism, the assembly replacing ordinary tension springs of the mechanism. The tension members and the spring are maintained in axial alignment during compression of the spring, which can be preloaded as desired. The assembly is fail-safe in that the spring is completely enclosed and the spring, if broken, continues to provide support for the door.

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patent: 3568365 (1971-03-01), Pernberton et al.
patent: 3680259 (1972-08-01), Andresen
patent: 4048695 (1977-09-01), Juilfs et al.
patent: 4178655 (1979-12-01), Little

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