Positive displacement air compressors

Details Positive displacement air compressors Positive displacement air compressors

1985-11-18

1987-02-10

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417302, F04B 4902, F04B 4908, F04B 4910

Patent

active

046420339

ABSTRACT:
A rotary positive displacement air compressor includes a stator containing a rotor and having an inlet and an outlet. The inlet includes two or more inlet apertures in parallel associated with independently actuable pistons. Detecting means detects the pressure of the compressed air and produces a signal when this pressure exceeds or is less than predetermined values and thus indicates whether the rate at which air is being compressed exceeds or is less than the compressed air demand to which the compressor is subjected. The two pistons are associated with respective actuating means which are controlled by the detecting means for opening and closing each inlet aperture independently to vary the rate of air flow through the inlet.

REFERENCES:
patent: 2951633 (1960-09-01), Fites
patent: 3072146 (1963-01-01), Gizeski
patent: 4207919 (1980-06-01), Hutton
patent: 4244396 (1981-01-01), Friedland et al.
patent: 4553906 (1985-11-01), Boller et al.

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