Counter for a plural-chamber pneumatic pump

Details Counter for a plural-chamber pneumatic pump Counter for a plural-chamber pneumatic pump

1995-04-03

1996-08-20

Thorpe, Timothy S.

Pumps

With signal, indicator, or inspection means

417393, F04B 5300

Patent

active

055473458

ABSTRACT:
A pneumatic pump of the type having a pair of pump chambers each divided by a diaphragm assembly coupled by a main shaft includes a housing having a central valve chamber. An integral counter, mounted in the pump housing, is also coupled to the diaphragm shaft, and provides a count of the number of shaft reciprocations performed.

REFERENCES:
patent: 571751 (1896-11-01), Crocker
patent: 2483924 (1949-10-01), Moulinier
patent: 3317083 (1967-05-01), Morrill
patent: 4037616 (1977-07-01), Pinkerton
patent: 4172698 (1979-10-01), Hinz et al.
patent: 4468222 (1984-08-01), Lundquist
patent: 4540349 (1985-08-01), Du
patent: 5334003 (1994-08-01), Gardner et al.

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