US3470898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow stem shutoff valves
Assignee: Individual
•
Filing: 1964-07-24
•
Granted: 1969-10-07
•
Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Jesse D Langdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:36
CPC Classifications
F; F16; F16K; F16K51/00; E; E03; E03C; E03C1/00; E03C1/02; E03C1/10; E03C1/104; E03C1/108; Y; Y10; Y10T; Y10T137/00; Y10T137/3149; Y10T137/3185; Y10T137/3294; Y10T137/3331
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A DEVICE OF THE CHARACTER DESCRIBED INCLUDING CASING MEANS HAVING AN INLET TERMINATING IN VALVE SEAT MEANS INSIDE SAID CASING, AN OUTLET PROJECTING FROM SAID CASING, MANUALLY ADJUSTABLE HOLLOW VALVE STEM MEANS INSERTED INTO SAID CASING BETWEEN SAID INLET AND OUTLET, THE HOLLOW OF SAID STEM MEANS COMMUNICATING BETWEEN THE INSIDE OF SAID CASING AND ATMOSPHERE, FLOAT VALVE MEANS RECIPROCALLY DEPOSED WITHIN AND MOVABLE CONCOMITANT SAID HOLLOW STEM MEANS AND ARRANGED TO CLOSE SAID INLET, WHEREIN THE FLOAT VALVE MEANS IS FORMED WITH A CONVERGENT END ARRANGED TO SEAT WITH A WEDGING EFFECT WITHIN CONFINES OF FLARED SEAT MEANS PROVIDED BY THE PROXIMATE INSIDE END OF THE INLET, THAT END OF THE FLOAT VALVE MEANS THAT IS OPPOSITE THE INLET SEAT BEING ARRANGED TO SEAT AGAINST AN-
Claim 2
Independent Claim
127 words
A DEVICE OF THE CHARACTER DESCRIBED INCLUDING CASING MEANS HAVING AN INLET TERMINATING IN VALVE SEAT MEANS INSIDE SAID CASING, AN OUTLET PROJECTING FROM SAID CASING, MANUALLY ADJUSTABLE HOLLOW VALVE STEM MEANS INSERTED INTO SAID CASING BETWEEN SAID INLET AND OUTLET, THE HOLLOW OF SAID STEM MEANS COMMUNICATING BETWEEN THE INSIDE OF SAID CASING AND ATMOSPHERE, FLOAT VALVE MEANS RECIPROCALLY DEPOSED WITHIN AND MOVABLE CONCOMITANT SAID HOLLOW STEM MEANS AND ARRANGED TO CLOSE SAID INLET, WHEREIN THE FLOAT VALVE MEANS IS FORMED WITH A CONVERGENT END ARRANGED TO SEAT WITH A WEDGING EFFECT WITHIN CONFINES OF FLARED SEAT MEANS PROVIDED BY THE PROXIMATE INSIDE END OF THE INLET, THAT END OF THE FLOAT VALVE MEANS THAT IS OPPOSITE THE INLET SEAT BEING ARRANGED TO SEAT AGAINST AN-
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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) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |