Title:
BATTERY-POWERED HOT WATER RECIRCULATION PUMP
Document Type and Number:
WIPO Patent Application WO/2015/042522
Kind Code:
A3
Abstract:
A relatively small water pump-DC motor combination, powered by batteries, provides sufficient pump power to create the flow between the hot and cold water lines necessary to maintain a substantially immediate hot water response when the hot water tap is opened. The pump is controlled by a thermal sensor signaling the pump to commence operation when the temperature in the hot water line upstream of the hot water tap is less than a predetermined value. Preferably, each of the batteries is rechargeable, most preferably utilizing a wireless system, where the power source is a distance away from the pump battery, to provide additional protection against electrical short circuits in the presence of water. Commonly available batteries of between 10 and 24 Volts can be used.
Inventors:
PERRONE CARL A (US)
THOMPSON STEVE (CA)
FACEY TODD (US)
WU DI (US)
BIRKENSTOCK ROBERT (US)
STAKEV VLADISLAV (US)
THOMPSON STEVE (CA)
FACEY TODD (US)
WU DI (US)
BIRKENSTOCK ROBERT (US)
STAKEV VLADISLAV (US)
Application Number:
PCT/US2014/056769
Publication Date:
May 14, 2015
Filing Date:
September 22, 2014
Export Citation:
Assignee:
TACO INC (US)
International Classes:
E03B5/02; E03C1/00
Foreign References:
| US20120192965A1 | 2012-08-02 | |||
| US20080245422A1 | 2008-10-09 | |||
| US6018208A | 2000-01-25 | |||
| US5205318A | 1993-04-27 | |||
| US5829467A | 1998-11-03 |
Attorney, Agent or Firm:
SUTTON, Paul J. et al. (909 Third Avenue27th Floo, New York NY, US)
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