US3565106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm for flood and suds control
Assignee: WILLIAM J BAUMBACH
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Filing: 1968-11-06
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Granted: 1971-02-23
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Expires: 1988-11-06
Abstract
Abstract A diaphragm-type control valve for installation in drain lines and the like to prevent backflow of water through said drain line which sometimes occurs due to floods and the like. A generally conical tubular body is provided with spiral vanes thereon reinforced with pins to prevent eversion of the diaphragm and apertures are provided at the lower portion of the diaphragm for ventilation purposes.
Inventors
- 👤 William J Baumbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:13
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/28; E03C1/298; F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/1441; F16K2200/00; F16K2200/40; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7847; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7883
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
46 words
The structure as defined in claim 1 wherein each of said vanes extends below the smaller tip end of the conical body and terminates in a spiral offset outer corner so that the vanes will collapse in a spiral manner when backflow pressure is exerted thereon.
Claim 2
Dependent Claim
29 words
The structure as defined in claim 2 wherein the portion of said conical body disposed between at least one pair of adjacent vanes is provided with a vent aperture.
Claim 3
Dependent Claim
188 words
A diaphragm for use in a flow path to prevent backflow therethrough comprising a base, a normally closed generally conical body depending from said base and being divided into a plurality of circumferentially spaced and longitudinally extending segments, each segment being defined by a vane to enable extension and contraction of the conical body to enable flow in one direction and prevent backflow, said vanes and conical body being formed of resilient material whereby the smaller tip end of the conical body and the vanes may open in response to flow in one direction and collapse to prevent backflow, each of said vanes extending below the smaller tip end and including an outer edge substantially parallel to the longitudinal axis of the conical body, a reinforcing rib extending along the outer edge of each vane with the lower end of the rib terminating in substantially the same horizontal plane as the smaller tip end of the conical body thereby enabling the conical body to expand without interference from the ribs and collapse of the portion of the vanes below the smaller tip end without interference from the ribs.
Claim 4
Dependent Claim
40 words
The structure as defined in claim 4 wherein each of said ribs includes a reinforcing rod therein, the lower ends of said vanes being spirally offset for collapse in a spiral manner without interference from the rib and reinforcing rod.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |