US3157198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve construction
Assignee: Seeger Wanner Corp
•
Filing: 1962-08-31
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Granted: 1964-11-17
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Expires: 1982-08-31
Abstract
No abstract record available.
Inventors
- 👤 William F Wanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:20
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0446; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/065; F16K2200/00; F16K2200/30; F16K2200/304; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7927; Y10T137/7929; Y10T137/7931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A CHECK VALVE COMPRISING (A) A VALVE PLATE HAVING A CIRCULAR APERTURE THEREIN, (B) A STEM EXTENDING LOOSELY THROUGH SAID APERTURE, (C) A CUP-SHAPED VALVE ELEMENT HAVING A CENTRAL OPENING FOR RECEPTION OF A PORTION OF SAID STEM AND HAVING A CONVEX WALL SEATED IN SAID APERTURE AT ONE SIDE OF SAID VALVE PLATE, (D) A GENERALLY CONICAL SPIDER INCLUDING A RELATIVELY SMALLER DIAMETER HUB PORTION LOOSELY JOURNALING SAID STEM, A RELATIVELY LARGER DIAMETER RIM PORTION SLIDABLY ENGAGING THE OPPOSITE SIDE OF SAID VALVE PLATE ADJACENT SAID CIRCULAR APERTURE, AND SPOKES DIVERGING FROM SAID HUB PORTION TOWARD SAID RIM PORTION AND CONNECTING THE HUB AND RIM PORTIONS TO DEFINE PORTS FOR FLUID PASSAGE THERETHROUGH, (E) YIELDING MEANS URGING SAID STEM IN A DIRECTION TO SEAT SAID VALVE ELEMENT IN SAID APERTURE, (F) RELEASABLE FASTENING MEANS SECURING SAID VALVE ELEMENT ON SAID STEM, AND (G) AN O-RING CIRCUMSCRIBING SAID STEM BETWEEN SAID VALVE ELEMENT AND SAID FASTENING MEANS AND PROVIDING A SEAL THEREBETWEEN.
Claim 2
Dependent Claim
162 words
A CHECK VALVE COMPRISING (A) A VALVE PLATE HAVING A CIRCULAR APERTURE THEREIN, (B) A STEM EXTENDING LOOSELY THROUGH SAID APERTURE, (C) A CUP-SHAPED VALVE ELEMENT HAVING A CENTRAL OPENING FOR RECEPTION OF A PORTION OF SAID STEM AND HAVING A CONVEX WALL SEATED IN SAID APERTURE AT ONE SIDE OF SAID VALVE PLATE, (D) A GENERALLY CONICAL SPIDER INCLUDING A RELATIVELY SMALLER DIAMETER HUB PORTION LOOSELY JOURNALING SAID STEM, A RELATIVELY LARGER DIAMETER RIM PORTION SLIDABLY ENGAGING THE OPPOSITE SIDE OF SAID VALVE PLATE ADJACENT SAID CIRCULAR APERTURE, AND SPOKES DIVERGING FROM SAID HUB PORTION TOWARD SAID RIM PORTION AND CONNECTING THE HUB AND RIM PORTIONS TO DEFINE PORTS FOR FLUID PASSAGE THERETHROUGH, (E) YIELDING MEANS URGING SAID STEM IN A DIRECTION TO SEAT SAID VALVE ELEMENT IN SAID APERTURE, (F) RELEASABLE FASTENING MEANS SECURING SAID VALVE ELEMENT ON SAID STEM, AND (G) AN O-RING CIRCUMSCRIBING SAID STEM BETWEEN SAID VALVE ELEMENT AND SAID FASTENING MEANS AND PROVIDING A SEAL THEREBETWEEN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |