US3276740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Keystone Valve Corp
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Filing: 1963-10-04
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Granted: 1966-10-04
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Expires: 1983-10-04
Abstract
No abstract record available.
Inventors
- 👤 Samuel S Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:16
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0689; F16K27/00; F16K27/06; F16K27/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A VALVE ADAPTED TO BE INSTALLED BETWEEN FLANGES IN A PIPELINE; COMPRISING, A VALVE BODY INCLUDING TWO SECTIONS, EACH HAVING A GROOVE THEREIN, THE GROOVES COMBINING WHEN THE TWO SECTIONS ARE ASSEMBLED TO PROVIDE A PASSAGEWAY THROUGH THE BODY; MEANS FOR HOLDING THE TWO SECTIONS ASSEMBLED; A VALVE SEAT OF RESILIENT, ELASTOMERIC MATERIAL LOCATED IN THE PASSAGEWAY THROUGH THE VALVE BODY, SAID SEAT HAVING AN OUTSIDE DIAMETER GREATER THAN THE DIAMETER OF THE PASSAGEWAY FORMED BY THE GROOVES THEREBY FORCING THE SEAT INTO SEALING ENGAGEMENT WITH THE BODY WHEN THE TWO SECTIONS OF THE BODY ARE ASSEMBLED AROUND THE SEAT; SAID SEAT HAVING AN OPENING THEREIN CO-AXIAL WITH THE PASSAGEWAY THROUGH THE BODY TO PROVIDE A FLOWWAY THROUGH THE VALVE AND A CAVITY OF CIRCULAR CROSS-SECTION INTERSECTING THE FLOWWAY; A VALVE MEMBER OF CIRCULAR CROSS-SECTION, LOCATED IN THE FLOWWAY AND EXTENDING INTO THE CAVITY, HAVING AN OPENING THEREIN WHOSE LONGITUDINAL AXIS LIES IN THE SAME PLANE AS THE LONGITUDINAL AXIS OF THE FLOWWAY; SAID
Claim 2
Dependent Claim
164 words
A VALVE ADAPTED TO BE INSTALLED BETWEEN FLANGES IN A PIPELINE; COMPRISING, A VALVE BODY INCLUDING TWO SECTIONS, EACH HAVING A GROOVE THEREIN, THE GROOVES COMBINING WHEN THE TWO SECTIONS ARE ASSEMBLED TO PROVIDE A PASSAGEWAY THROUGH THE BODY; MEANS FOR HOLDING THE TWO SECTIONS ASSEMBLED; A VALVE SEAT OF RESILIENT, ELASTOMERIC MATERIAL LOCATED IN THE PASSAGEWAY THROUGH THE VALVE BODY, SAID SEAT HAVING AN OUTSIDE DIAMETER GREATER THAN THE DIAMETER OF THE PASSAGEWAY FORMED BY THE GROOVES THEREBY FORCING THE SEAT INTO SEALING ENGAGEMENT WITH THE BODY WHEN THE TWO SECTIONS OF THE BODY ARE ASSEMBLED AROUND THE SEAT; SAID SEAT HAVING AN OPENING THEREIN CO-AXIAL WITH THE PASSAGEWAY THROUGH THE BODY TO PROVIDE A FLOWWAY THROUGH THE VALVE AND A CAVITY OF CIRCULAR CROSS-SECTION INTERSECTING THE FLOWWAY; A VALVE MEMBER OF CIRCULAR CROSS-SECTION, LOCATED IN THE FLOWWAY AND EXTENDING INTO THE CAVITY, HAVING AN OPENING THEREIN WHOSE LONGITUDINAL AXIS LIES IN THE SAME PLANE AS THE LONGITUDINAL AXIS OF THE FLOWWAY; SAID
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |