US3234739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic control apparatus
Assignee: HUNT PIERCE CORP
•
Filing: 1964-05-11
•
Granted: 1966-02-15
•
Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Wayne M Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:41
CPC Classifications
F; F15; F15B; F15B7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A CONTROL MECHANISM OF THE PNEUMATIC TYPE, AN AIR TRANSMITTER CONNECTED TO A REMOTELY LOCATED AIR RECEIVER BY AN AIR LINE, THE TRANSMITTER COMPRISING: A CASING; A FLEXIBLE RESILIENT BELLOWS WITHIN THE CASING HAVING ONE END THEREOF CONNECTED TO THE AIR LINE, THE OTHER END OF THE BELLOWS BEING FREE WITHIN THE CASING AND PROVIDED WITH A FITTING HAVING AN ORIFICE OPENING INTO THE BELLOWS; AND VALVE MEANS FOR CLOSING THE ORIFICE AND COMPRESSING
Claim 2
Dependent Claim
75 words
IN A CONTROL MECHANISM OF THE PNEUMATIC TYPE, AN AIR TRANSMITTER CONNECTED TO A REMOTELY LOCATED AIR RECEIVER BY AN AIR LINE, THE TRANSMITTER COMPRISING: A CASING; A FLEXIBLE RESILIENT BELLOWS WITHIN THE CASING HAVING ONE END THEREOF CONNECTED TO THE AIR LINE, THE OTHER END OF THE BELLOWS BEING FREE WITHIN THE CASING AND PROVIDED WITH A FITTING HAVING AN ORIFICE OPENING INTO THE BELLOWS; AND VALVE MEANS FOR CLOSING THE ORIFICE AND COMPRESSING
References Cited (Backward Citations)
US330221A
Cited
US1870904A
Cited
US2292527A
Cited
US2358032A
Cited
US2562847A
Cited
US2567519A
Cited
US3078679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |