Title:
FLUID DRIVEN PUMP AND PORTIONING CHECK VALVE
Document Type and Number:
WIPO Patent Application WO2000008336
Kind Code:
A3
Abstract:
A pump includes a housing (12), an enlarged block (32), an inlet fluid conduit (28), an outlet fluid conduit (38) and a flexible diaphragm (46). The housing defines a chamber (14) having an inlet (16) and a spaced apart outlet (18). The enlarged block (32) is located in the chamber and has a first region (30) and a spaced apart second region (40). The inlet fluid conduit (28) extends into the chamber (14), terminates at or near the first region (30) of the enlarged block (32) and has at least one fluid inlet aperture (34) in the chamber. The outlet fluid conduit (38) extends into the chamber (14), terminates at or near the second region (40) of the enlarged block (32) and has at least one fluid outlet aperture (42) in the chamber. The flexible diaphragm is located in the chamber and is moveable between a first position in which a working fluid from the inlet fluid conduit is prevented from passing toward the outlet fluid conduit and a second position in which the working fluid from the inlet fluid conduit is allowed to pass toward the outlet fluid conduit.
Inventors:
TUELL ELDEN C
Application Number:
PCT/US1999/016908
Publication Date:
June 02, 2000
Filing Date:
July 27, 1999
Export Citation:
Assignee:
SHURFLO PUMP MANUFACTURING CO (US)
International Classes:
F04B7/02; F04B13/02; F04B43/06; F04B43/10; F16K15/06; G01F11/32; (IPC1-7): F04B43/06; F04B7/02; F04B13/02; F04B43/10; F16K15/06; G01F11/32
Foreign References:
| EP0636379A1 | 1995-02-01 | |||
| US3039272A | 1962-06-19 | |||
| FR2488948A1 | 1982-02-26 | |||
| FR1439153A | 1966-05-20 | |||
| FR2621390A1 | 1989-04-07 | |||
| FR2522075A3 | 1983-08-26 | |||
| US2044945A | 1936-06-23 | |||
| FR2655123A3 | 1991-05-31 |
Download PDF:
Previous Patent: MOTOR PUMP UNIT FOR A HIGH-PRESSURE CLEANING APPARATUS
Next Patent: HYDRO-TRANSFORMER
Next Patent: HYDRO-TRANSFORMER