Patent US3177808A successfully refreshed from Google Patents.
US3177808A
Expired / Lapsed
US
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Bore hole perforating apparatus
Assignee: Individual
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Filing: 1961-03-13
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Granted: 1965-04-13
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Expires: 1981-03-13
Abstract
No abstract record available.
Inventors
- 👤 Harrold D Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:50
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117; F16; F16B; F16B2200/00; F16B2200/30; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A SHAPED CHARGE GUN FOR PERFORATING IN BORE HOLES COMPRISING A PLURALITY OF SHAPED CHARGE UNITS EACH HAVING A FRONT END CLOSURE INCLUDING A THREADED CYLINDRICAL FRONT END PORTION MERGING WITH A SHOULDER, A CARRIER IN THE FORM OF A RIGID ELONGATED MEMBER HAVING A PLURALITY OF SPACED OPENINGS THERIN, WITH EACH CHARGE UNIT BEING DISPOSED ON SAID CARRIER WITH SAID FRONT END CLOSURE PROTRUDING THROUGH A RESPECTIVE OPENING, AND A NUT ENGAGING EACH SAID THREADED PORTION AND BEARING ON SAID MEMBER FOR FIXING SAID RESPECTIVE CHARGE UNIT TO SAID MEMBER, WITH SAID CHARGE UNIT SHOULDER BEARING ON SAID MEMBER ON THE SIDE OPPOSITE SAID NUT.
Claim 2
Dependent Claim
106 words
A SHAPED CHARGE GUN FOR PERFORATING IN BORE HOLES COMPRISING A PLURALITY OF SHAPED CHARGE UNITS EACH HAVING A FRONT END CLOSURE INCLUDING A THREADED CYLINDRICAL FRONT END PORTION MERGING WITH A SHOULDER, A CARRIER IN THE FORM OF A RIGID ELONGATED MEMBER HAVING A PLURALITY OF SPACED OPENINGS THERIN, WITH EACH CHARGE UNIT BEING DISPOSED ON SAID CARRIER WITH SAID FRONT END CLOSURE PROTRUDING THROUGH A RESPECTIVE OPENING, AND A NUT ENGAGING EACH SAID THREADED PORTION AND BEARING ON SAID MEMBER FOR FIXING SAID RESPECTIVE CHARGE UNIT TO SAID MEMBER, WITH SAID CHARGE UNIT SHOULDER BEARING ON SAID MEMBER ON THE SIDE OPPOSITE SAID NUT.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |