Pump comprising a chamber with inlet and outlet openings, a stea

Details Pump comprising a chamber with inlet and outlet openings, a stea Pump comprising a chamber with inlet and outlet openings, a stea

1996-09-18

1999-05-04

Freay, Charles G.

Pumps

Expansible chamber type

Oscillating pumping member

417489, 417497, 92 98R, 418 50, F04C 2100

Patent

active

058996753

ABSTRACT:
A pump 1 comprises a chamber 2 having a inlet opening 22 and an outlet opening 21. The chamber 2 extends between a first main wall 30 and a second main wall 40. The first main wall 30 is a triangular bottom wall of a body 3. The second main wall 40 is a part of a triangular bottom wall of a tub 4. The body 3 is tiltable relative to the tub 4 so that the volume of the chamber 2 is variable. The pump 1 comprises an outlet valve for blocking the outlet opening 21 when the volume of the chamber 2 is increased and an inlet valve for blocking the inlet opening when the volume of the chamber 2 is reduced. The outlet valve is formed by a first portion 31 of the body 3. This first portion 31 of the body blocks the outlet opening when the body is urged against the outlet opening 21. The inlet valve is formed by a second portion 32 of the body 3. This second portion 32 of the body blocks the inlet opening when the body is urged against the outlet opening 21.

REFERENCES:
patent: 2291354 (1942-07-01), Sibley
patent: 2573927 (1951-11-01), Orelind
patent: 3058428 (1962-10-01), Gemeinhardt
patent: 3078033 (1963-02-01), Ovrutsky
patent: 3922119 (1975-11-01), Rosenquist
patent: 4042309 (1977-08-01), Hiraga
patent: 4405293 (1983-09-01), Pape
patent: 4540352 (1985-09-01), Becker

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