Apertured diaphragm end valve

Details Apertured diaphragm end valve Apertured diaphragm end valve

1974-11-25

1976-07-06

Smith, Jr., David

Electricity: circuit makers and breakers

Weight

Treads

200 83Q, H01H 1316

Patent

active

039683397

ABSTRACT:
A valve which produces an electrical signal upon pressure changes in which a diaphragm having an aperture contacts a leaf spring having a projection thereon. The valve provides for both controlled leakage of air, and intake of air in semi-closed static air signal system, particularly useful in vehicle driving instruction and scoring devices.

REFERENCES:
patent: 2251180 (1941-07-01), Wesley et al.
patent: 3106196 (1963-10-01), Woodward et al.
patent: 3505689 (1970-04-01), Neff et al.

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