US3074071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener device
Assignee: Olin Corp
•
Filing: 1961-12-11
•
Granted: 1963-01-22
•
Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 Caro Charles J De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:00
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/08; B25C1/10; B25C1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN AN EXPLOSIVE ACTUATED TOOL HAVING A BARREL, A PISTON RECEIVED AND SLIDABLY MOUNTED IN THE BORE OF SAID BARREL, MEANS FOR DETONATING AN EXPLOSIVE CHARGE BEHIND THE PISTON TO DRIVE IT TOWARDS THE MUZZLE END OF THE BARREL WITH HIGH VELOCITY AND FORCE, AND A PISTON RETAINING MEANS AT THE MUZZLE OF THE BARREL, SAID BARREL COMPRISING A CLOSELY WOUND HELICAL COIL EXTENDING LONGITUDINALLY OF THE BARREL, THE ADJACENT TURNS OF SAID COIL BEING IN CONTIGUITY AND OF CROSS-SECTIONAL SHAPE SUCH AS TO PRESENT A SUBSTANTIALLY CLOSED CONTINUOUS SURFACE ON THE INSIDE OF THE COIL IN THE REGION OF SAID TURNS TO FORM AT LEAST A PART OF THE BORE OF THE BARREL, SAID COIL BEING EFFECTIVE TO INCREASE THE SHOCK ABSORBING CAPACITY OF SAID BARREL AND ITS RESISTANCE TO FRACTURE TO CUSHION THE BLOW WHENEVER THE DRIVEN PISTON COLLIDES WITH SAID RETAINING MEANS.
Claim 2
Dependent Claim
145 words
IN AN EXPLOSIVE ACTUATED TOOL HAVING A BARREL, A PISTON RECEIVED AND SLIDABLY MOUNTED IN THE BORE OF SAID BARREL, MEANS FOR DETONATING AN EXPLOSIVE CHARGE BEHIND THE PISTON TO DRIVE IT TOWARDS THE MUZZLE END OF THE BARREL WITH HIGH VELOCITY AND FORCE, AND A PISTON RETAINING MEANS AT THE MUZZLE OF THE BARREL, SAID BARREL COMPRISING A CLOSELY WOUND HELICAL COIL EXTENDING LONGITUDINALLY OF THE BARREL, THE ADJACENT TURNS OF SAID COIL BEING IN CONTIGUITY AND OF CROSS-SECTIONAL SHAPE SUCH AS TO PRESENT A SUBSTANTIALLY CLOSED CONTINUOUS SURFACE ON THE INSIDE OF THE COIL IN THE REGION OF SAID TURNS TO FORM AT LEAST A PART OF THE BORE OF THE BARREL, SAID COIL BEING EFFECTIVE TO INCREASE THE SHOCK ABSORBING CAPACITY OF SAID BARREL AND ITS RESISTANCE TO FRACTURE TO CUSHION THE BLOW WHENEVER THE DRIVEN PISTON COLLIDES WITH SAID RETAINING MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |