US3307609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottom-hole igniter tube
Assignee: Pan American Petroleum Corp
•
Filing: 1966-03-23
•
Granted: 1967-03-07
•
Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 Karol L Hujsak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:28
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN AN IGNITER TUBE THE COMBINATION COMPRISING AN ELONGATED HOLLOW TUBULAR MEMBER CLOSED AT ONE END THEREOF, PORTS IN SAID MEMBER INTERMEDIATE THE ENDS THEREOF ADAPTED TO PERMIT THE FLOW OF FLUIDS INTO AND OUT OF SAID MEMBER, AND VALVE MEANS WITHIN SAID MEMBER BETWEEN SAID PORTS AND SAID CLOSED END THEREBY DEFINING A FLUID-TIGHT CHAMBER IN SAID MEMBER ADAPTED TO HOLD A PYROPHORIC MATERIAL, SAID VALVE MEANS WHEN IN THE OPEN POSITION PERMITTING DIRECT FLUID COMMUNICATION BETWEEN SAID PORTS AND SAID CHAMBER.
Claim 2
Dependent Claim
83 words
IN AN IGNITER TUBE THE COMBINATION COMPRISING AN ELONGATED HOLLOW TUBULAR MEMBER CLOSED AT ONE END THEREOF, PORTS IN SAID MEMBER INTERMEDIATE THE ENDS THEREOF ADAPTED TO PERMIT THE FLOW OF FLUIDS INTO AND OUT OF SAID MEMBER, AND VALVE MEANS WITHIN SAID MEMBER BETWEEN SAID PORTS AND SAID CLOSED END THEREBY DEFINING A FLUID-TIGHT CHAMBER IN SAID MEMBER ADAPTED TO HOLD A PYROPHORIC MATERIAL, SAID VALVE MEANS WHEN IN THE OPEN POSITION PERMITTING DIRECT FLUID COMMUNICATION BETWEEN SAID PORTS AND SAID CHAMBER.
References Cited (Backward Citations)
US883373A
Cited
US967089A
Cited
US1377975A
Cited
US1601678A
Cited
US2035413A
Cited
US2035412A
Cited
US3223165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |