Counterbalance mechanism

Details Counterbalance mechanism Counterbalance mechanism

1978-10-12

1979-12-18

Schroeder, Werner H.

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

Checks and closers

Liquid

16 56, 16DIG9, 16DIG10, 16DIG21, 217 60C, 292338, E05F 300

Patent

active

041786556

ABSTRACT:
A mechanism for use in counterbalancing the weight of a lid or closure incident to movements thereof between closed and open portions is in the form of a spring pressurized, hydraulic piston-cylinder arrangement. The mechanism preferably includes means providing hydraulic damping characteristics for both the fully extended and contracted conditions of the mechanism.

REFERENCES:
patent: 3143757 (1964-08-01), Quinn
patent: 3145055 (1964-08-01), Carter
patent: 3376795 (1968-04-01), Allen
patent: 3595551 (1971-07-01), Ortheil
patent: 3625540 (1971-12-01), Jewell
patent: 3963101 (1976-06-01), Stadelmann et al.
patent: 4012055 (1977-03-01), Ottow

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