US3139692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge powered spear gun
Assignee: Individual
•
Filing: 1963-03-14
•
Granted: 1964-07-07
•
Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Charles A Sellers
- 👤 Joe N Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:14
CPC Classifications
F; F41; F41C; F41C9/00; F41C9/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
170 words
IN A BREECH LOADING CARTRIDGE POWERED SPEAR GUN, A RECEIVER HAVING FIRING PIN MEANS AND TRIGGER AND SAFETY LOCK MEANS FOR THE FIRING PIN MEANS, A SHORT BARREL EXTENSION ON THE RECEIVER HAVING A BORE AND A REAR FLAT END WALL PROVIDED WITH AN OPENING FOR THE FIRING PIN MEANS, A BARREL UNIT ENGAGEABLE WITHIN THE BORE OF THE SHORT BARREL EXTENSION AND HAVING A REAR FLAT END WALL IN OPPOSED CLOSELY SPACED RELATION TO SAID REAR WALL AND ALSO HAVING A REAR END BREECH LOADING CHAMBER FOR A CARTRIDGE, THE SPACE BETWEEN THE REAR END WALLS OF THE BARREL UNIT AND SAID BORE RECEIVING THE RIM OF THE CARTRIDGE WITH SAID RIM CLAMPED BETWEEN SAID WALLS IN ALIGNMENT WITH SAID OPENING FOR THE FIRING PIN MEANS, MEANS TO RELEASABLY LOCK SAID BARREL UNIT WITHIN SAID BORE, SAID BARREL UNIT HAVING AN INNER BARREL SLEEVE DIRECTLY IN ADVANCE OF THE BREECH LOADING CHAMBER AND COMMUNICATING THEREWITH AND AN OUTER BARREL SLEEVE SURROUNDING THE INNER SLEEVE IN SPACED SUBSTANTIALLY CONCENTRIC RELA-
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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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |