Title:
VACUUM SEWAGE SYSTEMS WITH CHECK VALVES AND CHECK VALVES FOR VACUUM SEWAGE SYSTEMS
Document Type and Number:
WIPO Patent Application WO/2022/164766
Kind Code:
A3
Abstract:
A vacuum sewage system includes a check valve (500) having a body (510), sealing member (530) and cover (540). The body includes a housing. The sealing member has a first section (532) and a central section (536) connected to the first section. The central section has a sealing surface. The cover has an interior chamber, a connector having a passageway communicating with the interior chamber, and a front wall having a central section. The central section of the front wall has a sealing surface. The central section of the sealing member is moveable from a first position in which the sealing surface is in contact with the sealing surface of the central section of the front wall of the cover to a second position in which the sealing surface of the central section of the sealing member is spaced apart from the sealing surface of the central section of the front wall of the cover.
Inventors:
BLOCHER TROY E (US)
Application Number:
PCT/US2022/013602
Publication Date:
September 22, 2022
Filing Date:
January 25, 2022
Export Citation:
Assignee:
AQSEPTENCE GROUP INC (US)
International Classes:
F16K15/14
Foreign References:
| US3599657A | 1971-08-17 | |||
| DE2603712A1 | 1977-08-04 | |||
| US20040188541A1 | 2004-09-30 | |||
| US5617897A | 1997-04-08 | |||
| US6390130B1 | 2002-05-21 | |||
| DE1181015B | 1964-11-05 |
Attorney, Agent or Firm:
GALLAGHER, Gerard T. (US)
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