Air conserving restriction for use in pneumatic systems

Details Air conserving restriction for use in pneumatic systems Air conserving restriction for use in pneumatic systems

1985-07-17

1986-09-16

Cohan, Alan

Fluid handling

Pressure modulating relays or followers

137 84, G05D 1600

Patent

active

046116192

ABSTRACT:
A pneumatic condition sensing system for reducing the consumption of air supplied by a pneumatic source, the system having a bleed type pneumatic device for bleeding air from a branch line to atmosphere to control the pressure within the branch line in response to a sensed condition, an elongated restriction for connecting the bleed type device to the pneumatic source, the elongated restriction having an air conserving flow versus pressure relationship, and a controller connected to the branch line and responsive to the pressure therein for providing a control function usable in controlling a condition.

REFERENCES:
patent: 2409294 (1946-10-01), Martin
patent: 2718878 (1955-09-01), Du Bois
patent: 2836153 (1958-05-01), Dyson
patent: 2897670 (1959-08-01), Bentley
patent: 3111131 (1967-03-01), Zahuranec
patent: 3894562 (1975-07-01), Moseley
patent: 3999714 (1976-12-01), Lang

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