Valves and valve actuation – With snap action
Patent
1975-10-08
1976-11-09
Cohan, Alan
Valves and valve actuation
With snap action
74520, 98 41R, F16K 3156
Patent
active
039906744
ABSTRACT:
For use with an air outlet assembly having a damper valve therein with a crank arm extending from the side of the outlet, a combination lever and positioning spring adapted to engage the crank arm and pivot between first and second operative positions corresponding to open and closed positions of the damper. One end portion of the combination lever and spring which engages the crank arm has a bifurcated configuration with integrally jointed strip portions extending on either side of the crank arm. The lever is pivotally supported at a mid-portion and has a second end adapted for manual actuation. The bifurcated end portion forms an opening between the integrally joined strips through which the crank arm extends. As the crank arm is pivoted between the first and second operative positions, it moves axially with respect to the lever and causes separation of the strip portions accompanied by relative flexing of the joining portion between the strips thereby producing a force on the crank arm tending to move it from an intermediate position into first or second operative positions.
REFERENCES:
patent: 1161554 (1915-11-01), Voigt
patent: 3037484 (1962-06-01), Dixon
patent: 3327946 (1967-06-01), Benson
Cohan Alan
General Motors Corporation
MacLean, Jr. K. H.
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