Fluid compressors

Details Fluid compressors Fluid compressors

1990-10-10

1991-09-17

Smith, Leonard E.

Pumps

Successive stages

Stages driven by relatively movable motor working members

417347, 91291, 91304, 91308, F04B 300

Patent

active

050490389

ABSTRACT:
A two stage fluid compressor is operated by a pneumatically operated relay valve controlled by a fluidic switching device in which switching pulses of pressurized control air are obtained automatically on movement of a compression piston in one of the compression stages.

REFERENCES:
patent: 2579670 (1949-03-01), Hjarpe
patent: 3516763 (1970-06-01), Manton
patent: 4003679 (1977-01-01), McManigill
patent: 4854832 (1989-08-01), Gardner et al.

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