Patent US3364941A successfully refreshed from Google Patents.
US3364941A
Expired / Lapsed
US
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Check valve
Assignee: General Electric Co
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Filing: 1965-09-09
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Granted: 1968-01-23
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Expires: 1985-09-09
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Harder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/147; F16K15/1471; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A CHECK VALVE PARTICULARLY SUITED FOR PERMITTING PASSAGE OF A CONDUIT ALONG ITS AXIS THROUGH AN OPENING AND FOR SEALING THE OPENING UPON WITHDRAWAL OF THE CONDUIT, SAID VALVE COMPRISING: (A) PERIPHERAL MEANS FOR SEALINGLY ENGAGING THE EDGE OF THE OPENING; (B) A SHEET OF ELASTOMERIC MATERIAL COVERING SAID OPENING WITHIN SAID PERIPHERAL MEANS, SAID SHEET HAVING A PLURALITY OF SLITS THEREIN INTERSECTING SUBSTANTIALLY AT THE CENTER OF SAID SHEET, SAID SLITS DEFINING A PLURALITY OF FLAPS BIASED TO A POSITION OF CONTIGUOUS JUXTAPOSITION AND WHICH ARE SEPARABLE AT THE POINT OF INTERSECTION; AND (C) A COVER SECTION FORMED OF ELASTOMERIC MATERIAL SECURED TO ONE OF SAID FLAPS ON ONE SIDE THEREOF, SAID COVER SECTION HAVING A CONTOUR AND SIZE RELATIVE TO SAID FLAPS SUCH AS TO COVER THEM ENTIRELY WHEN PRESSED AGAINST SAID SHEET; (D) WHEREBY SAID FLAPS MAY BE FORMED TO ALLOW PASSAGE OF A CONDUIT BETWEEN THEM THROUGH TO SAID ONE SIDE AND, UPON WITHDRAWAL OF THE CONDUIT, SAID FLAPS SPRING BACK INTO CONTINUOUS JUXTAPOSITION, WITH SAID COVER SECTION BEING RESPONSIVE TO PRESSURE TO LIE IN SEALING RELATION RELATIVE TO SAID SHEET.
Claim 2
Dependent Claim
185 words
A CHECK VALVE PARTICULARLY SUITED FOR PERMITTING PASSAGE OF A CONDUIT ALONG ITS AXIS THROUGH AN OPENING AND FOR SEALING THE OPENING UPON WITHDRAWAL OF THE CONDUIT, SAID VALVE COMPRISING: (A) PERIPHERAL MEANS FOR SEALINGLY ENGAGING THE EDGE OF THE OPENING; (B) A SHEET OF ELASTOMERIC MATERIAL COVERING SAID OPENING WITHIN SAID PERIPHERAL MEANS, SAID SHEET HAVING A PLURALITY OF SLITS THEREIN INTERSECTING SUBSTANTIALLY AT THE CENTER OF SAID SHEET, SAID SLITS DEFINING A PLURALITY OF FLAPS BIASED TO A POSITION OF CONTIGUOUS JUXTAPOSITION AND WHICH ARE SEPARABLE AT THE POINT OF INTERSECTION; AND (C) A COVER SECTION FORMED OF ELASTOMERIC MATERIAL SECURED TO ONE OF SAID FLAPS ON ONE SIDE THEREOF, SAID COVER SECTION HAVING A CONTOUR AND SIZE RELATIVE TO SAID FLAPS SUCH AS TO COVER THEM ENTIRELY WHEN PRESSED AGAINST SAID SHEET; (D) WHEREBY SAID FLAPS MAY BE FORMED TO ALLOW PASSAGE OF A CONDUIT BETWEEN THEM THROUGH TO SAID ONE SIDE AND, UPON WITHDRAWAL OF THE CONDUIT, SAID FLAPS SPRING BACK INTO CONTINUOUS JUXTAPOSITION, WITH SAID COVER SECTION BEING RESPONSIVE TO PRESSURE TO LIE IN SEALING RELATION RELATIVE TO SAID SHEET.
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) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |