Spring adjustment mechanism

Details Spring adjustment mechanism Spring adjustment mechanism

1974-05-09

1976-01-27

Scanlan, Jr., Richard J.

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

Closers

Spring and gear

16 62, 16 69, 16 64, E05f 108

Patent

active

039343073

ABSTRACT:
An adjustable spring loading mechanism for use in controlling the movement of doors and the like. The mechanism includes a cylinder housing and a piston slideable within the housing. A plurality of biasing means are arranged in the housing in engagement with the piston, and apply individual biasing forces to the piston which cooperate to produce a total resultant biasing force. The biasing means are provided with different effective lengths so as to engage with the piston at different positions in the cylinder and thereby vary the total biasing force.

REFERENCES:
patent: 1475015 (1923-11-01), Huber
patent: 1989908 (1935-02-01), Bohnsack et al.
patent: 2071660 (1937-02-01), Schulz et al.
patent: 3000043 (1961-09-01), Check
patent: 3078499 (1963-02-01), Gray et al.
patent: 3714677 (1973-02-01), Schmid

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