MOTOR-DRIVEN PUMP FOR POOL OR SPA

WIPO Patent Application WO2005072480

A3

An improved motor-driven pump is provided for delivering a flow of water in a swimming pool or spa environment or the like. The improved pump includes a motor mounted within a motor housing having a seal plate mounted at one end thereof. The seal plate carries a shaft bearing for rotatably supporting a drive shaft having an outboard end connected to an impeller disposed within a pump chamber defined cooperatively by the seal plate and a volute housing mounted thereon. A primary seal assembly includes an axially spring-loaded dynamic seal ring carried on the drive shaft for rotation therewith and for running engagement with a stationary bushing carried by the seal plate. A secondary seal assembly is positioned axially between the primary seal assembly and motor bearing, and includes at least one slinger disk for radially outwardly slinging any water leaking past the primary seal assembly through a vent chamber.

JPH0613359	INDUSTRIAL APPLICABILITY: Dispenser functioning with compressed air
JP4128241	Wave power pump operated by wave energy
WO/2011/002902	CARRIER FOR PLUNGER DURING DISASSEMBLY

PETERSON DAVID J JR
HAMZA HASSAN
PETERSON KENNETH A
WICHMANN JEFFREY A

PCT/US2005/000428

October 06, 2005

January 06, 2005

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POLARIS POOL SYS INC (US)

F04B17/00; F04B35/04; F04D29/10; F04D29/12; (IPC1-7): F04B17/00; F04B35/04

US2312525A	1943-03-02
US3359911A	1967-12-26
US0347197A	1886-08-10
US6422822B1	2002-07-23
US4955793A	1990-09-11
US3914072A	1975-10-21
US3549277A	1970-12-22

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