US3176571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating mechanism
Assignee: Unisys Corp
•
Filing: 1962-06-08
•
Granted: 1965-04-06
•
Expires: 1982-06-08
Abstract
No abstract record available.
Inventors
- 👤 Reader Trevor Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:06
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/001; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2087; Y10T137/2104; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8858; Y10T83/886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A FLUID AMPLIFIER FOR ACTUATING A PUNCH ELEMENT COMPRISING A PAIR OF FLUID OUTLETS, A POWER FLUID SOURCE, MEANS FOR SWITCHING SAID FLUID FROM SAID FLUID SOURCE FROM ONE OF SAID FLUID OUTLETS TO THE OTHER, A CHAMBER DISPOSED INTERMEDIATE SAID PAIR OF FLUID OUTLETS IN THE PATH OF SAID POWER FLUID DURING A SWITCHING OPERATION, A MOVABLE DRIV-
Claim 2
Dependent Claim
59 words
A FLUID AMPLIFIER FOR ACTUATING A PUNCH ELEMENT COMPRISING A PAIR OF FLUID OUTLETS, A POWER FLUID SOURCE, MEANS FOR SWITCHING SAID FLUID FROM SAID FLUID SOURCE FROM ONE OF SAID FLUID OUTLETS TO THE OTHER, A CHAMBER DISPOSED INTERMEDIATE SAID PAIR OF FLUID OUTLETS IN THE PATH OF SAID POWER FLUID DURING A SWITCHING OPERATION, A MOVABLE DRIV-
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |