Closure counterbalance

Details Closure counterbalance Closure counterbalance

1976-02-19

1978-02-21

Marbert, James B.

Spring devices

Elastic extension devices

Compression spring

267168, 296 56, F16F 304

Patent

active

RE0295450

ABSTRACT:
The closure counterbalance is for attachment as a strut between a movable closure which is hingedly fastened to a support structure. The counterbalance includes a pair of tubular members telescopingly connected together in sliding relationship. A compression coil spring within the members urges the members apart. A wooden rod is provided within the tubular members. The wooden rod fixed extends into the spring in sliding relationship therewith to support and guide the spring and prevent the spring from buckling against the inner surface of the tubular members.

REFERENCES:
patent: 537346 (1895-04-01), Maag
patent: 571972 (1896-11-01), Janney
patent: 2420276 (1947-05-01), Wood
patent: 2694318 (1954-11-01), Smith et al.
patent: 2856077 (1958-10-01), Stanton
patent: 3531069 (1970-09-01), Dubbenley
patent: 3885778 (1975-05-01), Deisenroth

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