US3268735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocell modulators
Assignee: PHOTONETICS CORP
•
Filing: 1962-05-24
•
Granted: 1966-08-23
•
Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 Roland C M Beeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:56
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
A PHOTOCELL MODULATOR FOR CONVERTING D.-C. SIGNALS TO CORRESPONDING PULSATING SIGNALS WHICH COMPRISES (A) A SOURCE OF RADIATION, (B) A VANE-TYPE RADIOMETER POSITIONED TO RECEIVE RADIATION FROM SAID SOURCE AND BE ROTATED THEREBY, (C) THE RADIOMETER HAVING A PLURALITY OF VANES AND AT LEAST ONE VANE BEING ADAPTED TO PASS RADIATION THERETHROUGH PERIODICALLY AS THE VANES ROTATE, (D) A PHOTOCELL OF THE PHOTOCONDUCTIVE TYPE POSITIONED TO RECEIVE RADIATION PERIODICALLY PASSING THROUGH SAID ONE VANE AND RESPONSIVE THERETO, (E) A D.-C. SIGNAL SOURCE CONNECTED WITH THE PHOTOCELL FOR MODULATION OF THE D.-C. SIGNAL THEREBY, (F) AND MEANS FOR VARYING THE INTENSITY OF THE SOURCE OF RADIATION TO THEREBY ALTER THE FREQUENCY OF ROTATION OF THE RADIOMETER AND THE MODULATION PRODUCED THEREBY.
References Cited (Backward Citations)
GB190822748A
Cited
US2966823A
Cited
US2919358A
Cited
US2951942A
Cited
US2997630A
Cited
US3098932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |