Title:
AIR OPERATED PUMP
Document Type and Number:
WIPO Patent Application WO/2015/116897
Kind Code:
A3
Abstract:
An elongate air operated pump includes a pump chamber, a bladder inside the pump chamber, inlet and outlet valves to and from the chamber and an air control system. The air control system includes a control valve alternately communicating compressed air and exhaust to atmosphere to a venturi with a first end, a second end and a throat port. The first end of the venturi receives continuous compressed air. The second end receives the alternately communication of compressed air and exhaust to atmosphere from the control valve. The throat port of the venturi is in continuous communication with the bladder to pressurize and draw a vacuum on the bladder. The valves may be pneumatic pinch valves controlled by the control valve to cycle with the bladder or passive one-way pump valves.
Inventors:
GLAUBER CARL (US)
DUNCAN GREG S (US)
DUNCAN GREG S (US)
Application Number:
PCT/US2015/013685
Publication Date:
November 12, 2015
Filing Date:
January 30, 2015
Export Citation:
Assignee:
WILDEN PUMP AND ENGINEERING LLC (US)
International Classes:
F04B19/22; F04B43/08; F04B43/113
Foreign References:
| US5007803A | 1991-04-16 | |||
| US5147182A | 1992-09-15 | |||
| US4158530A | 1979-06-19 |
Other References:
See also references of EP 3102825A4
Attorney, Agent or Firm:
MCCONAGHY, John D. (333 So. Grand AvenueTwenty-Third Floo, Los Angeles California, US)
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