US3278941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Event marker galvanometer
Assignee: Consolidated Electrodynamics Corp
•
Filing: 1963-10-09
•
Granted: 1966-10-11
•
Expires: 1983-10-09
Abstract
No abstract record available.
Inventors
- 👤 Robert L Cheney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:14
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN AN INSTRUMENT FOR RECORDING SIGNALS FROM A SIGNAL SOURCE AND HAVING A LIGHT SOURCE AND AN ELONGATED PHOTOSENSITIVE RECORDING SURFACE MOVABLE ALONG ITS LENGTH; THE IMPROVEMENT COMPRISING A STATIONARY MIRROR DISPOSED IN THE INSTRUMENT AND MANUALLY POSITIONABLE TO RECEIVE AND REFLECT A LIGHT BEAM FROM THE LIGHT SOURCE ALONG A PREDETERMINED FIXED PATH TO IMPINGE ON THE RECORDING SURFACE AT A LATERALLY FIXED POSITION, OPTICAL MEANS POSITIONED IN THE LIGHT BEAM FOR BRINGING THE BEAM TO A NARROW FOCUS AT THE RECORDING SURFACE, AND SHUTTER MEANS FOR SELECTABLY INTERRUPTING THE LIGHT BEAM, THE SHUTTER MEANS BEING CONNECTED TO THE SIGNAL SOURCE AND RESPONSIVE TO A VARIABLE SIGNAL THEREFROM, THE SHUTTER MEANS BEING OPERABLE TO PREVENT THE LIGHT BEAM FROM REACHING THE RECORDING SURFACE ALONG THE FIXED PATH WHEN THE VARIABLE SIGNAL HAS ANY
Claim 2
Dependent Claim
134 words
IN AN INSTRUMENT FOR RECORDING SIGNALS FROM A SIGNAL SOURCE AND HAVING A LIGHT SOURCE AND AN ELONGATED PHOTOSENSITIVE RECORDING SURFACE MOVABLE ALONG ITS LENGTH; THE IMPROVEMENT COMPRISING A STATIONARY MIRROR DISPOSED IN THE INSTRUMENT AND MANUALLY POSITIONABLE TO RECEIVE AND REFLECT A LIGHT BEAM FROM THE LIGHT SOURCE ALONG A PREDETERMINED FIXED PATH TO IMPINGE ON THE RECORDING SURFACE AT A LATERALLY FIXED POSITION, OPTICAL MEANS POSITIONED IN THE LIGHT BEAM FOR BRINGING THE BEAM TO A NARROW FOCUS AT THE RECORDING SURFACE, AND SHUTTER MEANS FOR SELECTABLY INTERRUPTING THE LIGHT BEAM, THE SHUTTER MEANS BEING CONNECTED TO THE SIGNAL SOURCE AND RESPONSIVE TO A VARIABLE SIGNAL THEREFROM, THE SHUTTER MEANS BEING OPERABLE TO PREVENT THE LIGHT BEAM FROM REACHING THE RECORDING SURFACE ALONG THE FIXED PATH WHEN THE VARIABLE SIGNAL HAS ANY
References Cited (Backward Citations)
US2719264A
Cited
US2907952A
Cited
US2874353A
Cited
US1740130A
Cited
US2467950A
Cited
US2604955A
Cited
US2710070A
Cited
US2775503A
Cited
US2875017A
Cited
US2830866A
Cited
US3045241A
Cited
US3107138A
Cited
US3015535A
Cited
US3061813A
Cited
US3066300A
Cited
US3142528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |