US3851840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed cartridge
Assignee: Westinghouse Electric Corp
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Filing: 1972-05-18
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Granted: 1974-12-03
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Expires: 1992-05-18
Abstract
Abstract A reel-to-reel magnetic tape cartridge for a high speed tape dubbing system capable of achieving tape speeds as high as 240 inches per second or higher and characterized in that the tape is driven by a capstan, while payoff and take-up reels are braked and driven, respectively, by peripheral engagement with springloaded rollers. Cutaway corners of the cartridge casing facilitate peripheral engagement of the reels with driving and braking rollers, respectively. The tape is engaged and driven between an external capstan and an idler roller carried within the cartridge housing intermediate the tape reels. An additional feature of the invention resides in the provision of a novel reel brake which automatically engages the peripheries of the reels to stop them and prevent accidental rotation when the cartridge is ejected from a tape deck.
Inventors
- 👤 C Bastiaans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:27
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08778; G11B15/00; G11B15/18; G11B15/1883; G11B23/08721; G11B23/08757
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
210 words
A magnetic tape cartridge and playing deck assembly comprising a casing, a pair of spaced reels within the casing, a plurality of tape guides within the casing, a magnetic tape extending from one of said reels around said guides to the other of said reels, opening in the front side wall of said casing for receiving a magnetic head across which the tape will pass, a first roller which engages one side of the tape, a second roller within the casing against which said first roller is pressed with the tape therebetween, a guide slot in said deck, guide strips on opposite sides of said cartridge adapted to be received within said guide slot, a reel brake for said reels, said reel brake comprising a reciprocative body intermediate the reels and having arcuate friction liners on its opposite sides for engagement with the peripheries of said reels, a pin carried on said body and projecting through the top and bottom of said cartridge and said guide strips, and a groove within said guide slot, the groove terminating at a point whereby the pin will engage the end of the groove and disengage the reel brake from said reels when the second roller and tape are pressed against said first roller.
Claim 2
Dependent Claim
210 words
A magnetic tape cartridge and playing deck assembly comprising a casing, a pair of spaced reels within the casing, a plurality of tape guides within the casing, a magnetic tape extending from one of said reels around said guides to the other of said reels, opening in the front side wall of said casing for receiving a magnetic head across which the tape will pass, a first roller which engages one side of the tape, a second roller within the casing against which said first roller is pressed with the tape therebetween, a guide slot in said deck, guide strips on opposite sides of said cartridge adapted to be received within said guide slot, a reel brake for said reels, said reel brake comprising a reciprocative body intermediate the reels and having arcuate friction liners on its opposite sides for engagement with the peripheries of said reels, a pin carried on said body and projecting through the top and bottom of said cartridge and said guide strips, and a groove within said guide slot, the groove terminating at a point whereby the pin will engage the end of the groove and disengage the reel brake from said reels when the second roller and tape are pressed against said first roller.
Claim 3
Dependent Claim
47 words
The assembly of claim 16 wherein said body is loosely mounted on a plunger connected at one end to said pin, spring means interposed between said pin and said body, and spring means interposed between the end of said Plunger and a wall portion of said casing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |