Patent US3888432A successfully refreshed from Google Patents.
US3888432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording and/or reproducing apparatus having a reel disc device
Assignee: Victor Company of Japan Ltd
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Filing: 1973-08-08
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Granted: 1975-06-10
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Expires: 1993-08-08
Abstract
Abstract A recording and/or reproducing apparatus has a reel disc device of parallel double-clutch type, suitable for driving a take-up reel. This parallel double-clutch type reel disc device comprises an upper reel disc part for engaging a take-up reel and rotating it in a direction to take up a magnetic recording tape. An intermediate reel disc part is disposed below the upper reel disc part and fitted rotatably and axially slidably on a shaft-form member formed integrally with the upper reel disc part, rotating power, from a driving means, turns the intermediate reel disc in the take-up direction. A lower reel disc part is disposed below the intermediate reel disc part and fitted on the shaft-form member to slide axially thereon, but to rotate unitarily therewith. First and second friction clutches are interposed respectively between the upper reel disc part and the intermediate reel disc part and between the intermediate and lower reel disc parts. The rotation of the intermediate reel, as driven at the time of recording or reproducing, is transmitted simultaneously by way of a first rotation transmission path through the first friction clutch means and a second rotation transmission path through the second friction clutch means, the lower reel disc part, and the shaft-form member to the upper reel disc part. The first and second rotation transmission paths have a mutually parallel relationship.
Inventors
- 👤 Hiroshi Katoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:23
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/06; G11B25/066; G11B15/00; G11B15/18; G11B15/46; G11B15/50; G11B15/60; G11B15/66; G11B15/665; G11B15/6653; G11B15/6655
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
409 words
A recording and/or reproducing apparatus having a reel disc device comprising: a reel disc main structure for engaging and rotating a reel in a direction to take up a tape-form recording medium; a first reel disc part disposed below said reel disc main structure and adapted to rotate unitarily therewith; a shaft-form member rotatable unitarily with the reel disc main structure and said first reel disc part; a second reel disc part disposed below the first reel disc part and fitted onto said shaft-form member in a manner to rotate separately therefrom; a third reel disc part disposed below said second reel disc part and rotating unitarily with the shaft-form member; a fourth reel disc part disposed between second and third reel disc parts and fitted onto the shaft-form member in a manner to be rotatable separately from the shaft-form member and the second reel disc part; driving means for transmitting rotational power to the second reel disc part; coupling means operating, when in operative state, to couple the fourth and second reel disc parts for unitary rotation thereof and, when in inoperative state, to uncouple said reel disc parts; first rotation transmitting means interposed between the first and second reel disc parts to transmit the rotation of the second reel disc part to the first reel disc part; and second rotation transmitting means interposed between the fourth and third reel disc parts to transmit the rotation of the fourth reel disc part to the third reel disc part, said second reel disc part, said first rotation transmitting means, and said first reel disc part forming a single first rotation transmission path from the driving means to the reel disc main structure, the rotation of said driving means being transmitted with a small torque From the second reel disc part by way of only said first transmission path when said coupling means is in the inoperative state, said second reel disc part, said fourth reel disc part, said second rotation transmitting means, said third reel disc means, and said shaft-form member forming a second rotation transmission path from the driving means to the reel disc main structure, in addition to said first rotation transmission path, when the coupling means is in the operative state, whereby the rotation of the driving means is transmitted from the second reel disc part simultaneously by way of the first and second transmission paths with a large torque to the reel disc main structure.
Claim 2
Dependent Claim
409 words
A recording and/or reproducing apparatus having a reel disc device comprising: a reel disc main structure for engaging and rotating a reel in a direction to take up a tape-form recording medium; a first reel disc part disposed below said reel disc main structure and adapted to rotate unitarily therewith; a shaft-form member rotatable unitarily with the reel disc main structure and said first reel disc part; a second reel disc part disposed below the first reel disc part and fitted onto said shaft-form member in a manner to rotate separately therefrom; a third reel disc part disposed below said second reel disc part and rotating unitarily with the shaft-form member; a fourth reel disc part disposed between second and third reel disc parts and fitted onto the shaft-form member in a manner to be rotatable separately from the shaft-form member and the second reel disc part; driving means for transmitting rotational power to the second reel disc part; coupling means operating, when in operative state, to couple the fourth and second reel disc parts for unitary rotation thereof and, when in inoperative state, to uncouple said reel disc parts; first rotation transmitting means interposed between the first and second reel disc parts to transmit the rotation of the second reel disc part to the first reel disc part; and second rotation transmitting means interposed between the fourth and third reel disc parts to transmit the rotation of the fourth reel disc part to the third reel disc part, said second reel disc part, said first rotation transmitting means, and said first reel disc part forming a single first rotation transmission path from the driving means to the reel disc main structure, the rotation of said driving means being transmitted with a small torque From the second reel disc part by way of only said first transmission path when said coupling means is in the inoperative state, said second reel disc part, said fourth reel disc part, said second rotation transmitting means, said third reel disc means, and said shaft-form member forming a second rotation transmission path from the driving means to the reel disc main structure, in addition to said first rotation transmission path, when the coupling means is in the operative state, whereby the rotation of the driving means is transmitted from the second reel disc part simultaneously by way of the first and second transmission paths with a large torque to the reel disc main structure.
Claim 3
Dependent Claim
66 words
A recording and/or reproducing apparatus having a reel disc device as set forth in claim 1 which further comprises changeover means for displacing the coupling means selectively between its inoperative state position separated from the second and fourth reel disc parts and its operative state position at which the coupling means couples the second and fourth reel disc parts to cause the same to rotate unitarily.
Claim 4
Dependent Claim
95 words
A recording and/or reproducing apparatus having a reel disc device as set forth in claim 1 in which said apparatus is capable of selectively accommodating for use tape storing casings of different shape and containing said reel, and which said apparatus further has detection means for detecting the tape storing casings of predetermined kinds on the basis of differences in the shapes of storing casings inserted and thus accommodated and means operating in accordance with the detecting operation of said detection means to changing the coupling means from its inoperative state to its operative state.
Claim 5
Dependent Claim
96 words
A recording and/or reproducing apparatus having a reel disc device as set forth in claim 1 in which said second reel disc part has a first gear part formed around the entire outer peripheral part thereof, said fourth reel disc part has a second gear part formed around the entire outer peripheral part thereof, and said coupling means comprises a rotation transmitting gear moving into the operative position to mesh simultaneously with said first and second gear parts and thereby to cause the fourth reel disc part to rotate unitarily with the second reel disc part.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |