Patent US3554465A successfully refreshed from Google Patents.
US3554465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape drive unit for tape recorder
Assignee: Fujitsu General Electronics Ltd
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Filing: 1969-09-16
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Granted: 1971-01-12
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Expires: 1989-09-16
Abstract
Abstract A tape drive unit for a tape recorder comprising a takeup reel shaft, a friction disc operatively connected with a drive source normally for driving the shaft, a transmission roller operable to operatively connect the shaft with the drive source, control means to disengage the friction disc from operative connection with the shaft and at the same time to engage the transmission roller with the shaft, and reset means for resetting the control means. The transmission roller is mounted on a rockable lever, of which movement is controlled by said control means and said resetting means.
Inventors
- 👤 Yujiro Marukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:34
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/1883; G11B15/44; G11B15/442
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A tape drive unit for a tape recorder comprising a takeup reel shaft, a friction disc operatively connected with a drive source normally for driving the shaft, a transmission roller operable to operatively connect the shaft with the drive source, thereby causing the shaft to be driven at a different number of revolutions from that provided by said friction disc, control means to disengage the friction disc from operative connection with the shaft and at the same time to engage the transmission roller respectively with the shaft, and reset means for resetting said control means.
Claim 2
Dependent Claim
95 words
A tape drive unit for a tape recorder comprising a takeup reel shaft, a friction disc operatively connected with a drive source normally for driving the shaft, a transmission roller operable to operatively connect the shaft with the drive source, thereby causing the shaft to be driven at a different number of revolutions from that provided by said friction disc, control means to disengage the friction disc from operative connection with the shaft and at the same time to engage the transmission roller respectively with the shaft, and reset means for resetting said control means.
Claim 3
Dependent Claim
51 words
A tape drive unit according to claim 1, in which said transmission roller is carried on one end of a rockable lever movable from its inoperative position in which it is normally latched by latch means to its operative position upon actuation of said control means to release said latch means.
Claim 4
Dependent Claim
114 words
A tape drive unit according to claim 2, in which said rockable lever is resiliently urged in a direction to move past said one end and to bring the transmission roller into operative connection with the shaft; and said latch means comprises an elongate slot at the end of the rockable lever remote from said one end, said slot being engaged adjacent its one end nearer said one end of the lever by a fixed pin, a stop engaging said slot adjacent the end thereof remote from said one end of the rockable lever, a cam formed in the side of the rockable lever nearer said shaft, and a second pin engaging the cam.
Claim 5
Dependent Claim
27 words
A tape drive unit according to claim 3, in which said control means comprises means for moving said stop in said slot towards said one end thereof.
Claim 6
Dependent Claim
41 words
A tape drive unit according to claim 4, in which said reset means comprises means for moving said second pin to cause an angular motion of said rockable lever about said fixed pin against the action of the resiliently urging force.
Claim 7
Dependent Claim
102 words
A tape drive unit according to claim 5, further including a base plate on which are mounted at least one magnetic head, a pinch roller which is operable with the motion of said base plate, and a capstan driven by the drive source, said capstan being provided at a distance from the pinch roller and separately from said base plate and integrally movable therewith, as said reset means is operated, so as to move said second pin to cause said angular motion of the rockable lever and to bring said pinch roller into contact with said capstan with a tape interposed therebetween.
Claim 8
Dependent Claim
39 words
A tape drive unit according to claim 6, further including a flywheel concentric with said capstan and driven by the drive source, said transmission roller being engageable at its operative position with both said shaft and said flywheel simultaneously.
Claim 9
Dependent Claim
127 words
A tape drive unit according to claim 2, in which said rockable lever is resiliently urged in a direction to move past said one end and to bring the transmission roller into operative connection with the shaft; and said latch means comprises an elongate slot at the end of the rockable lever remote from said one end, said slot being engaged adjacent its one end nearer said one end of the lever by a fixed pin, a stop engaging said slot adjacent the end thereof remote from said one end of the rockable lever, a cam member fixed in position adjacent one side of the rockable lever nearer said shaft, and a second pin secured to said one side of the rockable lever and engaging the cam.
Claim 10
Dependent Claim
82 words
A tape drive unit according to claim 1, further including another shaft in parallel relationship with and at a distance from the takeup reel shaft, said another shaft being adapted to carry another reel, said transmission roller being positioned between said takeup reel and said another reel, rewind means for beginning said transmission roller into operative connection with said another shaft while said transmission roller is in operative connection with said drive source, and second reset means for resetting said rewind means.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |