The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 07, 2017
Filed:
Mar. 14, 2013
Rheem Australia Pty Limited, Rydalmere, NSW, AU;
Wilson Ng, NSW, AU;
David Micallef, NSW, AU;
RHEEM AUSTRALIA PTY LIMITED, , AU;
Abstract
A water heating system having a system inlet pipe (), a hot water delivery pipe () and a hot water return pipe () connected to a building hot water distribution network (); the water heating system including one or more water heaters (), the or each water heater having a heater inlet () and a heater outlet (), a hot water return pipe () connected between the system inlet and delivery outlet via the building hot water distribution network to form a close loop hot water supply-return circuit; a pump () connected to circulate water through the hot water supply-return circuit whereby the pump can circulate water through one or more of the water heaters; a valve means () [a first non-return valve] adapted to prevent inlet water (water delivered to the system inlet) from flowing into the hot water return pipe or the building hot water distribution network.