Pneumatic pump and control means therefor

Details Pneumatic pump and control means therefor Pneumatic pump and control means therefor

1997-07-02

2000-11-28

Thorpe, Timothy S.

Pumps

Motor driven

Fluid motor

417401, 417403, 4175551, 251 59, F04B 1700, F04B 3910, F16K 3112

Patent

active

061527068

ABSTRACT:
A pneumatically operated reciprocating pump and pneumatic control means therefor having in separate chambers a geared air flow control mechanism and a piston/piston rod sub-assembly. The geared air flow control mechanism has two toothed gear members, the first being quasi-circular with upper and lower fins and the second being semi-circular and having two sealing members and fins attached thereto. The gear members are mounted in tooth meshing relationship within a gear chamber disposed above the piston chamber. Two sealable passages connect the gear chamber to the piston chamber, one passage communicating directly with that portion of the piston chamber above the piston and the other communicating by means of an external tube system with that portion of the piston chamber beneath the piston. The gear having the two sealing members attached thereto is disposed so that each sealing member will alternately properly seal a corresponding sealable passage when the gear is sufficiently rotated thereto.

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patent: 5173036 (1992-12-01), Fladby

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