Patent US2750069A successfully refreshed from Google Patents.
US4190910A
Expired / Lapsed
US
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Plumbing apparatus including means for producing a water-plug effect in sanitation appliances
Assignee: Gustavsberg AB
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Filing: 1978-02-28
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Granted: 1980-03-04
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Expires: 1998-02-28
Abstract
Abstract A sanitation appliance such as a water-closet or the like equipped with a generally vertically extending outlet pipe is provided with a resilient diaphragm mounted within said pipe and extending thereacross to stem the flow of flushing water passing through said pipe until a sufficient quantity of the water has accumulated whereupon the diaphragm operates to pass the water through the pipe thereby to cause the accumulated water to act as a water plug creating a suction effect within the pipe.
Inventors
- 👤 Lars Teglund
- 👤 Melchiorre Oldani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:20
CPC Classifications
E; E03; E03D; E03D11/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7339
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
142 words
Plumbing apparatus for producing a water-plug effect during the flushing of sanitation appliances comprising outlet pipe means extending in a substantially vertical direction, said outlet pipe means constituting the flow outlet for such sanitation appliance, and resilient diaphragm means mounted to extend across said pipe means and structured to stem the flow of flushing water flowing therethrough until a sufficient quantity of water has accumulated, said diaphragm means upon accumulation of such sufficient quantity operating to pass said water through said pipe means thereby to cause said accumulated water to act as a water-plug, said resilient diaphragm means comprising a diaphragm formed from resilient material having formed therein a central opening with slits extending radially outwardly from said central opening of said diaphragm material, said slits operating to divide said diaphragm into a plurality of radially arranged flaps surrounding said central opening.
Claim 2
Dependent Claim
142 words
Plumbing apparatus for producing a water-plug effect during the flushing of sanitation appliances comprising outlet pipe means extending in a substantially vertical direction, said outlet pipe means constituting the flow outlet for such sanitation appliance, and resilient diaphragm means mounted to extend across said pipe means and structured to stem the flow of flushing water flowing therethrough until a sufficient quantity of water has accumulated, said diaphragm means upon accumulation of such sufficient quantity operating to pass said water through said pipe means thereby to cause said accumulated water to act as a water-plug, said resilient diaphragm means comprising a diaphragm formed from resilient material having formed therein a central opening with slits extending radially outwardly from said central opening of said diaphragm material, said slits operating to divide said diaphragm into a plurality of radially arranged flaps surrounding said central opening.
Claim 3
Dependent Claim
12 words
Apparatus according to claim 1 wherein said diaphragm is made of rubber.
Claim 4
Dependent Claim
73 words
Apparatus according to claim 1 wherein said diaphragm is formed with an outer peripheral bead extending about the outer periphery thereof, said bead operating to mount said diaphragm within said outlet pipe means, said outlet pipe means including an outlet pipe of said sanitation appliance and a connecting pipe having a socket end, said diaphragm being interposed between said outlet pipe of said sanitation appliance and said socket end of said connecting pipe.
Claim 5
Dependent Claim
52 words
Apparatus according to claim 1 wherein said outlet pipe means include a water-closet outlet pipe, a connecting pipe arranged in flow connection therewith, a sealing ring for sealing the joint between said water-closet outlet pipe and said connecting pipe, said diaphragm being combined with said sealing ring by an integral connecting skirt.
References Cited (Backward Citations)
US2638178A
Cited
US3838706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |