Title:
PUMP AND CONTROLLER SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO2000017521
Kind Code:
A3
Abstract:
A liquid pump (10) and controller with separate pump activation and deactivation mechanisms that are both closed detector devices is provided. The pump activation mechanism includes a float device (40) that activates a pump motor (12) when water within a housing (30) of the pump (10) reach a high water level. The pump deactivation mechanism includes a sensor (104) that detects the load on the pump motor (12) and deactivates the pump motor (12) when the sensed load indicates that the water within the pump housing (30) has reached a low water level.
Inventors:
BATCHELDER SCOTT K
HAUSS RICHARD J
BURRILL JAMES T
HAUSS RICHARD J
BURRILL JAMES T
Application Number:
PCT/US1999/021289
Publication Date:
July 20, 2000
Filing Date:
September 17, 1999
Export Citation:
Assignee:
RULE INDUSTRIES (US)
International Classes:
F04D15/02; (IPC1-7): F04B49/00; F04B17/00
Foreign References:
| US5833437A | 1998-11-10 | |||
| US3715539A | 1973-02-06 | |||
| US4275995A | 1981-06-30 | |||
| US2687693A | 1954-08-31 | |||
| US2260312A | 1941-10-28 |
Other References:
See also references of EP 1042611A4
Download PDF: