US3169479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosively actuated hole cutter
Assignee: EIDP Inc
•
Filing: 1962-08-30
•
Granted: 1965-02-16
•
Expires: 1982-08-30
Abstract
No abstract record available.
Inventors
- 👤 Paul J Bryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:39
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A CUTTING DEVICE WHICH COMPRISES: (A) A SAUCER-SHAPED HOUSING, SAID HOUSING HAVING A SUBSTANTIALLY MARGINAL ANNULAR CHANNEL CONCENTRICALLY DISPOSED IN ITS CONCAVE SURFACE, (B) A LINEAR SHAPED CHARGE MOUNTED IN SAID CHANNEL, SAID CHARGE COMPRISING A FLEXIBLE TUBE OF ESSENTIALLY V-SHAPED CROSS SECTION HAVING A CORE OF DETONATING EXPLOSIVE COMPOSITION, SAID CHARGE BEING POSITIONED TO PERMIT CONTINUOUS EXPOSURE TO THE INVERTED LONGITUDINAL SURFACE OF SAID TUBE, (C) A PRIMER MOUNTED IN SAID HOUSING IN PROGAGATING RELATIONSHIP TO SAID CHARGE, SAID PRIMER CONTAINING A CAP SENSITIVE EXPLOSIVE COMPOSITION,
Claim 2
Dependent Claim
87 words
A CUTTING DEVICE WHICH COMPRISES: (A) A SAUCER-SHAPED HOUSING, SAID HOUSING HAVING A SUBSTANTIALLY MARGINAL ANNULAR CHANNEL CONCENTRICALLY DISPOSED IN ITS CONCAVE SURFACE, (B) A LINEAR SHAPED CHARGE MOUNTED IN SAID CHANNEL, SAID CHARGE COMPRISING A FLEXIBLE TUBE OF ESSENTIALLY V-SHAPED CROSS SECTION HAVING A CORE OF DETONATING EXPLOSIVE COMPOSITION, SAID CHARGE BEING POSITIONED TO PERMIT CONTINUOUS EXPOSURE TO THE INVERTED LONGITUDINAL SURFACE OF SAID TUBE, (C) A PRIMER MOUNTED IN SAID HOUSING IN PROGAGATING RELATIONSHIP TO SAID CHARGE, SAID PRIMER CONTAINING A CAP SENSITIVE EXPLOSIVE COMPOSITION,
References Cited (Backward Citations)
US2587243A
Cited
US2638323A
Cited
US2625881A
Cited
US2797892A
Cited
US2705921A
Cited
US2918006A
Cited
US2761384A
Cited
US2960037A
Cited
US2737115A
Cited
US2879972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |