US3190219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating device
Assignee: Dresser Industries Inc
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Filing: 1960-02-02
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Granted: 1965-06-22
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Expires: 1980-02-02
Abstract
No abstract record available.
Inventors
- 👤 Venghiattis Alexis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:43
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08; E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A DEVICE ADAPTED TO BE LOWERED INTO AN EARTH WELL BOREHOLE TO PRODUCE PERFORATIONS IN THE WALL THEREOF COMPRISING: A HOLLOW, ELONGATED CASE; MEANS FORMING A PLURALITY OF OPENINGS IN THE SIDE OF SAID CASE; CLOSURE MEANS COVERING EACH OF SAID OPENINGS; A CONE AROUND EACH OF SAID OPENINGS AND EXTENDING WITH ITS APEX POINTED TOWARD THE INTERIOR OF SAID HOLLOW CASE; AN ELONGATED BODY OF HIGH EXPLOSIVE WITHIN SAID CASE EXTENDING LONGITUDINALLY THEREOF, SAID EXPLOSIVE BODY BEING FORMED WITH A CONVEX EXTERIOR SURFACE; A NON-EXPLOSIVE LIQUID PRESSURE-WAVE TRANSMISSION MEDIUM SUBSTANTIALLY FILLING THE INTERIOR OF SAID HOLLOW BODY BETWEEN SAID CONES AND SAID EXPLOSIVE BODY; AND MEANS FOR DETONATING SAID EXPLOSIVE BODY.
Claim 2
Independent Claim
112 words
A DEVICE ADAPTED TO BE LOWERED INTO AN EARTH WELL BOREHOLE TO PRODUCE PERFORATIONS IN THE WALL THEREOF COMPRISING: A HOLLOW, ELONGATED CASE; MEANS FORMING A PLURALITY OF OPENINGS IN THE SIDE OF SAID CASE; CLOSURE MEANS COVERING EACH OF SAID OPENINGS; A CONE AROUND EACH OF SAID OPENINGS AND EXTENDING WITH ITS APEX POINTED TOWARD THE INTERIOR OF SAID HOLLOW CASE; AN ELONGATED BODY OF HIGH EXPLOSIVE WITHIN SAID CASE EXTENDING LONGITUDINALLY THEREOF, SAID EXPLOSIVE BODY BEING FORMED WITH A CONVEX EXTERIOR SURFACE; A NON-EXPLOSIVE LIQUID PRESSURE-WAVE TRANSMISSION MEDIUM SUBSTANTIALLY FILLING THE INTERIOR OF SAID HOLLOW BODY BETWEEN SAID CONES AND SAID EXPLOSIVE BODY; AND MEANS FOR DETONATING SAID EXPLOSIVE BODY.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |