Patent US3839736A successfully refreshed from Google Patents.
US3839736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Record tape cartridges
Assignee: Individual
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Filing: 1972-11-24
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Granted: 1974-10-01
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Expires: 1992-11-24
Abstract
Abstract The present teachings relate to the employ of a check device in combination with a record tape cartridge which serves to restrict unauthorized recording or playback usage of the record tape container in otherwise standardized recording or reproducing equipment. The check device may consist of any characteristically shaped recess or slot configuration formed integrally with the record container at a predetermined position thereon such that it is disposed in complementary mating relationship relative to a key formation affixed within the tape receiving cavity of the recording or reproducing apparatus.
Inventors
- 👤 T Hoshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:21
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/05; G11B15/06; G11B15/07; G11B23/00; G11B23/02; G11B23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
Check apparatus for use in combination with record tape cartridges and associated transducing apparatus receptacles consisting of a record cartridge receiving cavity for operative positioning of the tape cartridge, comprising: a plural key configuration consisting of a plurality of keys each formed at a selected rearward position on one surface of said transducer apparatus receiving cavity; and a plural slot configuration formed at a selected position on one surface of said record tape cartridge for knock-out removal of cartridge material to expose said plural slots of selected different cut-out configurations of said cartridge surface which is positioned adjacent said record cartridge receiving cavity inner surface, said plurality of slots being in position to form mating engagement with said plural key configuration thereby to allow complete insertion of said record cartridge into operative transducing relationship within said record cartridge receiving cavity, the number and rearward position of said plural key and plural slot configuration being variable in accordance with a pre-determined codification to enable proper operation of only selected tape cartridges with pre-enable transducing apparatus.
Claim 2
Dependent Claim
174 words
Check apparatus for use in combination with record tape cartridges and associated transducing apparatus receptacles consisting of a record cartridge receiving cavity for operative positioning of the tape cartridge, comprising: a plural key configuration consisting of a plurality of keys each formed at a selected rearward position on one surface of said transducer apparatus receiving cavity; and a plural slot configuration formed at a selected position on one surface of said record tape cartridge for knock-out removal of cartridge material to expose said plural slots of selected different cut-out configurations of said cartridge surface which is positioned adjacent said record cartridge receiving cavity inner surface, said plurality of slots being in position to form mating engagement with said plural key configuration thereby to allow complete insertion of said record cartridge into operative transducing relationship within said record cartridge receiving cavity, the number and rearward position of said plural key and plural slot configuration being variable in accordance with a pre-determined codification to enable proper operation of only selected tape cartridges with pre-enable transducing apparatus.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |