Portable pneumatic vacuum source apparatus and method

Details Portable pneumatic vacuum source apparatus and method Portable pneumatic vacuum source apparatus and method

1994-12-14

1997-04-29

Thorpe, Timothy

Pumps

One fluid pumped by contact or entrainment with another

Jet

417182, 15409, F04F 548

Patent

active

056242395

ABSTRACT:
A portable pneumatic vacuum source includes a source of pressurized fluid and a vacuum pump in fluid connection with the pressurized fluid source, the vacuum pump operative to generate a vacuum in response to pressurized fluid flow therethrough. A nozzle is included in vacuum connection with the vacuum pump. A pressure regulator and filter combination is interposed between and in fluid connection with the pressurized fluid source and vacuum pump for adjusting pressure of the pressurized fluid entering the vacuum pump and for filtering particulates and liquids from the pressurized fluid. A relief valve is also interposed between and in fluid connection with the pressurized fluid source and vacuum pump for limiting pressure of the pressurized fluid. Finally, a check valve is positioned intermediate and in fluid connection with the vacuum pump and nozzle for preventing loss of vacuum upon cessation of pressurized fluid flow through the vacuum pump.

REFERENCES:
patent: 2682886 (1954-07-01), Paxton
patent: 2874566 (1959-02-01), Mastak
patent: 3369392 (1968-02-01), Christensson
patent: 3377844 (1968-04-01), Gandolfo
patent: 3452751 (1969-07-01), Austin
patent: 3516405 (1970-06-01), Hopper
patent: 3527909 (1970-09-01), Torre
patent: 4157656 (1979-06-01), Walle
patent: 4294107 (1981-10-01), Walle
patent: 4341534 (1982-07-01), Burger
patent: 4542643 (1985-09-01), Himmelstein
patent: 4759691 (1988-07-01), Kroupa
patent: 4762467 (1988-08-01), Ackermann

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