US3085845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recording geophysical signals on a depth basis
Assignee: Texas Instruments Inc
•
Filing: 1957-10-28
•
Granted: 1963-04-16
•
Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Perry Edward Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:31
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/24; G01V; G01V1/00; G01V1/28; G01V1/32; G01D2205/00; G01D2205/70; G01D2205/77; G01D2205/777
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN AN APPARATUS FOR RECORDING GEOPHYSICAL SIGNALS TRAVELLING AT PREDETERMINED ACTUAL VELOCITIES, THE COMBINATION COMPRISING A PAPER DRIVE ROLLER, A CHART DRIVEN BY SAID ROLLER, A DIFFERENTIAL HAVING FIRST AND SECOND INPUTS, AN OUTPUT CONNECTED TO SAID ROLLER FOR DRIVING SAID ROLLER, A FIRST DRIVE INPUT MEANS TO SAID DIFFERENTIAL TO DRIVE SAID FIRST INPUT AT A CONSTANT SPEED PROPORTIONAL TO THE AVERAGE VELOCITY OF SAID GEOPHYSICAL SIGNALS IN THE GROUND, AND A SECOND DRIVE INPUT MEANS TO SAID SECOND INPUT INCLUDING A FUNCTION GENERATOR TO DRIVE SAID SECOND INPUT AT PREDETERMINED VARIABLE SPEEDS PROPORTIONAL TO THE DIFFERENCE IN SPEED BETWEEN THE ACTUAL VELOCITIES AND THE AVERAGE VELOCITY OF SAID GEOPHYSICAL SIGNALS WHEREBY SAID
Claim 2
Dependent Claim
114 words
IN AN APPARATUS FOR RECORDING GEOPHYSICAL SIGNALS TRAVELLING AT PREDETERMINED ACTUAL VELOCITIES, THE COMBINATION COMPRISING A PAPER DRIVE ROLLER, A CHART DRIVEN BY SAID ROLLER, A DIFFERENTIAL HAVING FIRST AND SECOND INPUTS, AN OUTPUT CONNECTED TO SAID ROLLER FOR DRIVING SAID ROLLER, A FIRST DRIVE INPUT MEANS TO SAID DIFFERENTIAL TO DRIVE SAID FIRST INPUT AT A CONSTANT SPEED PROPORTIONAL TO THE AVERAGE VELOCITY OF SAID GEOPHYSICAL SIGNALS IN THE GROUND, AND A SECOND DRIVE INPUT MEANS TO SAID SECOND INPUT INCLUDING A FUNCTION GENERATOR TO DRIVE SAID SECOND INPUT AT PREDETERMINED VARIABLE SPEEDS PROPORTIONAL TO THE DIFFERENCE IN SPEED BETWEEN THE ACTUAL VELOCITIES AND THE AVERAGE VELOCITY OF SAID GEOPHYSICAL SIGNALS WHEREBY SAID
References Cited (Backward Citations)
US1489782A
Cited
US1270964A
Cited
US1740788A
Cited
US2163746A
Cited
US2326219A
Cited
US2521130A
Cited
US2490461A
Cited
US2604955A
Cited
US2638402A
Cited
US2697648A
Cited
US2821892A
Cited
US2963555A
Cited
US3005056A
Cited
US2858523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |