Patent US3081790A successfully refreshed from Google Patents.
US3081790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: Individual
•
Filing: 1960-08-15
•
Granted: 1963-03-19
•
Expires: 1980-08-15
Abstract
No abstract record available.
Inventors
- 👤 Robert E Radford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:14
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F16K11/161; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/8593; Y10T137/86919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A VALVE COMPRISING A HOUSING, A VALVE STEM RECIPROCALLY DISPOSED WITHIN THE HOUSING, FLUID PASSAGEWAY MEANS PROVIDED IN THE VALVE STEM, A VALVE PORT PROVIDED AT EACH END OF THE VALVE STEM, SLIDABLE VALVE SEAT MEANS PROVIDED FOR EACH VALVE PORT AND COOPERATING WITH THE VALVE STEM FOR ALTERNATELY OPENING AND CLOSING THE VALVE PORTS, A FLUID INLET PROVIDED IN THE HOUSING IN COMMUNICATION WITH EACH OF THE VALVE PORTS, A PLURALITY OF FLUID OUTLET PORTS PROVIDED IN THE HOUSING IN COMMUNICATION WITH THE FLUID PASSAGEWAY, SAID VALVE PORTS ALTERNATELY OPENED AND CLOSED UPON RECIPROCATION OF THE VALVE STEM FOR SELECTIVELY SHUNTING THE FLOW OF THE FLUID FROM THE INLET TO THE OUTLET PORTS, AND MEANS RESPONSIVE TO VARIABLE FLUID CONDITIONS FOR AUTOMATICALLY RECIPROCATING THE VALVE STEM.
Claim 2
Dependent Claim
127 words
A VALVE COMPRISING A HOUSING, A VALVE STEM RECIPROCALLY DISPOSED WITHIN THE HOUSING, FLUID PASSAGEWAY MEANS PROVIDED IN THE VALVE STEM, A VALVE PORT PROVIDED AT EACH END OF THE VALVE STEM, SLIDABLE VALVE SEAT MEANS PROVIDED FOR EACH VALVE PORT AND COOPERATING WITH THE VALVE STEM FOR ALTERNATELY OPENING AND CLOSING THE VALVE PORTS, A FLUID INLET PROVIDED IN THE HOUSING IN COMMUNICATION WITH EACH OF THE VALVE PORTS, A PLURALITY OF FLUID OUTLET PORTS PROVIDED IN THE HOUSING IN COMMUNICATION WITH THE FLUID PASSAGEWAY, SAID VALVE PORTS ALTERNATELY OPENED AND CLOSED UPON RECIPROCATION OF THE VALVE STEM FOR SELECTIVELY SHUNTING THE FLOW OF THE FLUID FROM THE INLET TO THE OUTLET PORTS, AND MEANS RESPONSIVE TO VARIABLE FLUID CONDITIONS FOR AUTOMATICALLY RECIPROCATING THE VALVE STEM.
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |