US3176713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball check valve
Assignee: Wyeth Holdings LLC
•
Filing: 1961-09-12
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Granted: 1965-04-06
•
Expires: 1981-09-12
Abstract
No abstract record available.
Inventors
- 👤 John R Mcdermott
- 👤 Jr Richard F Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:10
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A BALL CHECK VALVE COMPRISING A HOUSING CONSISTING OF AT LEAST TWO RING-LIKE MEMBERS, EACH HAVING AN AXIAL OPENING THERETHROUGH AND FABRICATED FROM A MATERIAL SELECTED FROM THE GROUP CONSISTING OF EPOXY AND POLYESTER RESINS, EACH OF SAID MEMBERS HAVING A FACE ARRANGED TO ABUT A CORRESPONDING FACE OF THE OTHER OF SAID MEMBERS AND ARRANGED TO BE SEPARATED FROM EACH OTHER BY AN AXIAL, NONROTARY MOVEMENT THEREOF, MEANS EXTENDING FROM OPPOSITE ENDS OF SAID MEMBERS ARRANGED TO BRACE
Claim 2
Dependent Claim
79 words
A BALL CHECK VALVE COMPRISING A HOUSING CONSISTING OF AT LEAST TWO RING-LIKE MEMBERS, EACH HAVING AN AXIAL OPENING THERETHROUGH AND FABRICATED FROM A MATERIAL SELECTED FROM THE GROUP CONSISTING OF EPOXY AND POLYESTER RESINS, EACH OF SAID MEMBERS HAVING A FACE ARRANGED TO ABUT A CORRESPONDING FACE OF THE OTHER OF SAID MEMBERS AND ARRANGED TO BE SEPARATED FROM EACH OTHER BY AN AXIAL, NONROTARY MOVEMENT THEREOF, MEANS EXTENDING FROM OPPOSITE ENDS OF SAID MEMBERS ARRANGED TO BRACE
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |