US3759465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape containing cassettes, each with a removable wall
Assignee: International Business Machines Corp
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Filing: 1971-04-23
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Granted: 1973-09-18
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Expires: 1991-04-23
Abstract
Abstract A tape-containing cassette facilitates interchange between lowspeed recording systems and high-speed or high-performance recording systems. In a low-performance system, the tape is transported wholly within the cassette. The cassette may be removed from a low-performance player and placed in a highperformance player. Then, the tape is partially removed from the cassette for higher speed transport. A front wall opening of the cassette includes a pair of movable front wall end plates. The end plates partially covering the front wall opening facilitate in-the-cassette tape processing. Moving the two end plates to a nonclosure position clears the entire front wall opening to facilitate removing the tape from the cassette for out-of-thecassette tape processing.
Inventors
- 👤 D Janssen
- 👤 E Kollar
- 👤 E Stahlberg
- 👤 H Tiao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:36
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08785
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
A tape containing cassette for operation with a tape-cassette player adapted to perform transducing operations on a tape while transported within the cassette and also operable with a second player which is adapted to perform transducing operations on the tape when partially removed from said cassette, said cassette having an open front wall portion extending between two opposite longitudinal end walls with a pair of tape guides at opposite ends of said front wall portion for defining a tape path therebetween extending along the front wall portion, the improvement including: a pair of end plates, means mounting said end plates for slidable engagement with said front wall portion for closing opposite end portions of the end wall portion and leaving a tape access aperture therebetween and completely removable for permitting said tape to pass said guides in a path somewhat parallel tO said opposite longitudinal end walls for facilitating high-speed tape transport.
Claim 2
Dependent Claim
152 words
A tape containing cassette for operation with a tape-cassette player adapted to perform transducing operations on a tape while transported within the cassette and also operable with a second player which is adapted to perform transducing operations on the tape when partially removed from said cassette, said cassette having an open front wall portion extending between two opposite longitudinal end walls with a pair of tape guides at opposite ends of said front wall portion for defining a tape path therebetween extending along the front wall portion, the improvement including: a pair of end plates, means mounting said end plates for slidable engagement with said front wall portion for closing opposite end portions of the end wall portion and leaving a tape access aperture therebetween and completely removable for permitting said tape to pass said guides in a path somewhat parallel tO said opposite longitudinal end walls for facilitating high-speed tape transport.
Claim 3
Dependent Claim
46 words
The cassette set forth in claim 1 wherein said end plates, when partially closing said end wall portion, include a tape path controlling projection extending in cooperative relationship with said guides whereby said tape, when transported in the cassette, is restricted to a predetermined tape path.
Claim 4
Dependent Claim
125 words
A tape-containing cassette having a pair of spools rotatably secured therein and having tape extending therebetween along a path adjacent opposite longitudinal end walls, past a pair of tape path controlling guides, thence along one end wall portion, said one end wall portion being open, a removable closure consisting of two removable end plates disposed along said one end wall portion and partially covering opposite end portions thereof for forming a tape access aperture along said tape path of size smaller than said one end wall portion and between said removable end plates, and means on said closure cooperating with said guides in said cassette for forming a tape path in a restricted manner for limiting looping of the tape within the cassette during transport.
Claim 5
Dependent Claim
125 words
A tape-containing cassette having a pair of spools rotatably secured therein and having tape extending therebetween along a path adjacent opposite longitudinal end walls, past a pair of tape path controlling guides, thence along one end wall portion, said one end wall portion being open, a removable closure consisting of two removable end plates disposed along said one end wall portion and partially covering opposite end portions thereof for forming a tape access aperture along said tape path of size smaller than said one end wall portion and between said removable end plates, and means on said closure cooperating with said guides in said cassette for forming a tape path in a restricted manner for limiting looping of the tape within the cassette during transport.
Claim 6
Dependent Claim
55 words
The cassette set forth in claim 3 wherein said tape path controlling guides include a pair of flanged idler wheels disposed at opposite ends of said one end wall portion, and said means on said closure including a pair of inward tape guiding projections on said closure extending between the flanges respectively on said guides.
References Cited (Backward Citations)
US1871236A
Cited
US1904097A
Cited
US2216909A
Cited
US3008012A
Cited
US3235264A
Cited
US3706979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |