US3288385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensing device
Assignee: Ampex Corp
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Filing: 1964-03-18
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Granted: 1966-11-29
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Expires: 1984-03-18
Abstract
No abstract record available.
Inventors
- 👤 Michael J Markakis
- 👤 Charles E Mendenhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:47
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B15/00; G11B15/02; G11B15/05; G11B15/06; G11B15/08; G11B15/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
APPARATUS FOR A TAPE SYSTEM FOR SENSING WHEN THE END OF A RECORDING TAPE HAS BEEN REACHED AND THEN PRODUCING A PREDETERMINED EFFECT UPON THE OPERATION OF THE SYSTEM, THE TAPE BEING RELATIVELY NONLIGHT-TRANSMITTING BUT HAVING A LIGHT-TRANSMITTING PORTION AT THE END THEREOF, SAID APPARATUS COMPRISING: (A) A FRAME, (B) A TAPE REEL ROTATABLY SUPPORTED ON SAID FRAME, SAID REEL HAVING A HOLLOW TUBULAR HUB THAT INCLUDES LIGHTTRANSMITTING MEANS AND IS ADAPTED TO HAVE THE RECORDING TAPE WOUND AROUND IT WITH THE LIGHT-TRANSMITTING PORTION CLOSET TO SAID HUB, (C) A LIGHT-PRODUCING ELEMENT ON SAID FRAME, (D) A LIGHT-RESPONSIVE ELEMENT ON SAID FRAME, ONE OF SAID ELEMENTS BEING DISPOSED WITHIN SAID HUB, THE OTHER OF SAID ELEMENTS BEING DISPOSED OUTSIDE OF SAID HUB, (E) MEANS OPERATED BY THE ACTUATION OF SAID LIGHT-SENSITIVE ELEMENT TO AFFECT THE OPERATION OF THE TAPE SYSTEM, WHEREBY SAID LIGHT-RESPONSIVE ELEMENT WILL BE ACTUATED WHEN THE TAPE WOUND ON SAID REEL HAS SUFFICIENTLY UNWOUND SO THAT ONLY THE LIGHT-TRANSMITTING END PORTION EXTENDS BETWEEN SAID LIGHT-PRODUCING ELEMENT AND SAID LIGHTRESPONSIVE ELEMENT.
Claim 2
Dependent Claim
173 words
APPARATUS FOR A TAPE SYSTEM FOR SENSING WHEN THE END OF A RECORDING TAPE HAS BEEN REACHED AND THEN PRODUCING A PREDETERMINED EFFECT UPON THE OPERATION OF THE SYSTEM, THE TAPE BEING RELATIVELY NONLIGHT-TRANSMITTING BUT HAVING A LIGHT-TRANSMITTING PORTION AT THE END THEREOF, SAID APPARATUS COMPRISING: (A) A FRAME, (B) A TAPE REEL ROTATABLY SUPPORTED ON SAID FRAME, SAID REEL HAVING A HOLLOW TUBULAR HUB THAT INCLUDES LIGHTTRANSMITTING MEANS AND IS ADAPTED TO HAVE THE RECORDING TAPE WOUND AROUND IT WITH THE LIGHT-TRANSMITTING PORTION CLOSET TO SAID HUB, (C) A LIGHT-PRODUCING ELEMENT ON SAID FRAME, (D) A LIGHT-RESPONSIVE ELEMENT ON SAID FRAME, ONE OF SAID ELEMENTS BEING DISPOSED WITHIN SAID HUB, THE OTHER OF SAID ELEMENTS BEING DISPOSED OUTSIDE OF SAID HUB, (E) MEANS OPERATED BY THE ACTUATION OF SAID LIGHT-SENSITIVE ELEMENT TO AFFECT THE OPERATION OF THE TAPE SYSTEM, WHEREBY SAID LIGHT-RESPONSIVE ELEMENT WILL BE ACTUATED WHEN THE TAPE WOUND ON SAID REEL HAS SUFFICIENTLY UNWOUND SO THAT ONLY THE LIGHT-TRANSMITTING END PORTION EXTENDS BETWEEN SAID LIGHT-PRODUCING ELEMENT AND SAID LIGHTRESPONSIVE ELEMENT.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |