US3266521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Ross Operating Valve Co
•
Filing: 1963-02-20
•
Granted: 1966-08-16
•
Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Brinkel
- 👤 Daniel B Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:03
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B13/0402; F15C; F15C3/00; F15C3/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/8667; Y10T137/86694; Y10T137/8671
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN COMBINATION, A VALVE HAVING A FIRST INPUT SIGNAL PORT, A SECOND INPUT SIGNAL PORT AND AN OUTPUT SIGNAL PORT, MEANS RESPONSIVE TO THE APPLICATION AND MAINTENANCE OF A PRESSURE SIGNAL AT SAID FIRST INPUT SIGNAL PORT AND THE LATTER APPLICATION AND MAINTENANCE OF A PRESSURE SIGNAL AT SAID SECOND INPUT SIGNAL PORT FOR APPLYIONG A PRESSURE SIGNAL AT SAID OUTPUT SIGNAL PORT, AND MEANS RESPONSIVE TO REMOVAL OF THE PRESSURE SIGNAL AT EITHER INPUT SIGNAL PORT FOR REMOVING THE PRESSURE SIGNAL AT SAID OUTPUT SIGNAL PORT.
Claim 2
Dependent Claim
87 words
IN COMBINATION, A VALVE HAVING A FIRST INPUT SIGNAL PORT, A SECOND INPUT SIGNAL PORT AND AN OUTPUT SIGNAL PORT, MEANS RESPONSIVE TO THE APPLICATION AND MAINTENANCE OF A PRESSURE SIGNAL AT SAID FIRST INPUT SIGNAL PORT AND THE LATTER APPLICATION AND MAINTENANCE OF A PRESSURE SIGNAL AT SAID SECOND INPUT SIGNAL PORT FOR APPLYIONG A PRESSURE SIGNAL AT SAID OUTPUT SIGNAL PORT, AND MEANS RESPONSIVE TO REMOVAL OF THE PRESSURE SIGNAL AT EITHER INPUT SIGNAL PORT FOR REMOVING THE PRESSURE SIGNAL AT SAID OUTPUT SIGNAL PORT.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |