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:
Aug. 30, 2011
Filed:
Jul. 16, 2007
Robert William Stimpson, Douglas, GB;
Graham Robin Lock, Glen Vine, GB;
James Edward Self, Colby, GB;
Robert William Stimpson, Douglas, GB;
Graham Robin Lock, Glen Vine, GB;
James Edward Self, Colby, GB;
DLP Limited, Isle of Man, British Isles, GB;
Abstract
A pumped shower drain system () comprises a shower base (), a waste water unit () provided on the shower base () and having a waste water inlet () and a waste water outlet (), and a reciprocating water pump () for pumping water from the waste water unit () to a drain (). The reciprocating water pump () includes: a pump housing () having a pump inlet () in liquid communication with the waste water outlet () of the waste water unit (), and a pump outlet () in liquid communication with the drain (); first and second inlet valve seals () in spaced relationship; and first and second outlet valve seals () in spaced relationship. Each set of inlet and outlet valve seals comprise different kinds of valve seals from each other, and are independently closable to close the pump inlet or outlet. Preferably, the inlet valve seals and/or the outlet valve seals have different modes of operation.