US3170482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pump for pressure vessels and method for making same
Assignee: Individual
•
Filing: 1961-08-30
•
Granted: 1965-02-23
•
Expires: 1981-08-30
Abstract
No abstract record available.
Inventors
- 👤 John R Wicoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:09
CPC Classifications
F; F23; F23D; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0026; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A VALVE CLOSURE FOR A CYLINDER PUMP COMPRISING A CYLINDRICAL BODY HAVING A PASSAGEWAY AXIALLY THERETHROUGH, A CIRCUMFERENTIAL RECESS IN SAID PASSAGEWAY, AN ELASTIC ORING SEAL IN SAID CIRCUMFERENTIAL RECESS, AN INWARDLY PROJECTING LEDGE CIRCUMFERENTIALLY IN SAID PASSAGEWAY, A VALVE AXIALLY MOVABLE IN SAID PASSAGEWAY, SAID VALVE INCLUDING A STEM HAVING A REMOVABLE BUSHING AND A DISK CLOSURE FOR SEATING AGAINST SAID ELASTIC O-RING SEAL, A COIL SPRING ON SAID STEM OF SAID VALVE, ONE OF SAID COIL SPRING SEATED ON SAID LEDGE, THE OTHER END OF SAID COIL SPRING BEING BIASED AGAINST SAID BUSHING, THE TERMINAL END OF SAID CY-
Claim 2
Dependent Claim
101 words
A VALVE CLOSURE FOR A CYLINDER PUMP COMPRISING A CYLINDRICAL BODY HAVING A PASSAGEWAY AXIALLY THERETHROUGH, A CIRCUMFERENTIAL RECESS IN SAID PASSAGEWAY, AN ELASTIC ORING SEAL IN SAID CIRCUMFERENTIAL RECESS, AN INWARDLY PROJECTING LEDGE CIRCUMFERENTIALLY IN SAID PASSAGEWAY, A VALVE AXIALLY MOVABLE IN SAID PASSAGEWAY, SAID VALVE INCLUDING A STEM HAVING A REMOVABLE BUSHING AND A DISK CLOSURE FOR SEATING AGAINST SAID ELASTIC O-RING SEAL, A COIL SPRING ON SAID STEM OF SAID VALVE, ONE OF SAID COIL SPRING SEATED ON SAID LEDGE, THE OTHER END OF SAID COIL SPRING BEING BIASED AGAINST SAID BUSHING, THE TERMINAL END OF SAID CY-
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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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |