US3147670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and other apparatus
Assignee: Individual
•
Filing: 1961-05-10
•
Granted: 1964-09-08
•
Expires: 1981-05-10
Abstract
No abstract record available.
Inventors
- 👤 Herman J Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/04; B25C1/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A PNEUMATIC DEVICE FOR DRIVING A FASTENER, A DRIVER PISTON RECIPROCABLY MOUNTED IN SAID DEVICE, PRESSURE AIR MEANS IN SAID DEVICE FOR MOVING SAID DRIVER PISTON IN FASTENER APPLYING DIRECTION, MOVABLE MEANS ADAPTED IN AN UNSEATED POSITON TO ADMIT SAID PRESSURE AIR TO SAID PISTON, PRESSURE AIR MEANS FOR SEATING SAID MOVABLE MEANS TO STOP THE FLOW OF SAID PRESSURE AIR TO SAID PISTON AND ADJUSTABLE MEANS FOR REGULATING THE FLOW OF PRESSURE AIR BEING USED TO SEAT SAID MOVABLE MEANS.
Claim 2
Dependent Claim
82 words
IN A PNEUMATIC DEVICE FOR DRIVING A FASTENER, A DRIVER PISTON RECIPROCABLY MOUNTED IN SAID DEVICE, PRESSURE AIR MEANS IN SAID DEVICE FOR MOVING SAID DRIVER PISTON IN FASTENER APPLYING DIRECTION, MOVABLE MEANS ADAPTED IN AN UNSEATED POSITON TO ADMIT SAID PRESSURE AIR TO SAID PISTON, PRESSURE AIR MEANS FOR SEATING SAID MOVABLE MEANS TO STOP THE FLOW OF SAID PRESSURE AIR TO SAID PISTON AND ADJUSTABLE MEANS FOR REGULATING THE FLOW OF PRESSURE AIR BEING USED TO SEAT SAID MOVABLE MEANS.
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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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |