US2745085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seismic detector
Assignee: ExxonMobil Oil Corp
•
Filing: 1953-07-09
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Granted: 1956-05-08
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Expires: 1973-07-09
Abstract
No abstract record available.
Inventors
- 👤 Malcolm D Mccarty
- 👤 Kenneth W Mcload
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:32
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/16; G01V1/18; G01V1/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A DETECTOR HAVING A MAGNET STRUCTURE COMPRISING A CYLINDRICAL PERMANENT MAGNET, A RADIALLY EXTENDING POLE PIECE COUNTERBORED TO RECEIVE ONE END OF SAID CYLINDRICAL MAGNET, A RING-SHAPED POLE PIECE AT THE OPPOSITE END OF SAID MAGNET FORMING THEREWITH A NARROW CIRCUMFERENTIAL AIR GAP AND HAVING LEGS EXTENDING LENGTHWISE OF SAID MAGNET INTO ABUTTING ENGAGEMENT WITH SAID COUNTERBORED POLE PIECE, MOUNTING FLANGES FORMING AN INTEGRAL PART OF SAID STRUCTURE AND EXTENDING RADIALLY WITH RESPECT TO SAID CYLINDRICAL MAGNET BEYOND THE PERIPHERY OF SAID LEGS, AND A HOUSING TO WHICH SAID MOUNTING FLANGES ARE SECURED
Claim 2
Dependent Claim
93 words
A DETECTOR HAVING A MAGNET STRUCTURE COMPRISING A CYLINDRICAL PERMANENT MAGNET, A RADIALLY EXTENDING POLE PIECE COUNTERBORED TO RECEIVE ONE END OF SAID CYLINDRICAL MAGNET, A RING-SHAPED POLE PIECE AT THE OPPOSITE END OF SAID MAGNET FORMING THEREWITH A NARROW CIRCUMFERENTIAL AIR GAP AND HAVING LEGS EXTENDING LENGTHWISE OF SAID MAGNET INTO ABUTTING ENGAGEMENT WITH SAID COUNTERBORED POLE PIECE, MOUNTING FLANGES FORMING AN INTEGRAL PART OF SAID STRUCTURE AND EXTENDING RADIALLY WITH RESPECT TO SAID CYLINDRICAL MAGNET BEYOND THE PERIPHERY OF SAID LEGS, AND A HOUSING TO WHICH SAID MOUNTING FLANGES ARE SECURED
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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |