Patent US3900174A successfully refreshed from Google Patents.
US3900174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic magnetic tape recording and reproducing device
Assignee: Panasonic Holdings Corp
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Filing: 1974-01-04
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Granted: 1975-08-19
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Expires: 1994-01-04
Abstract
Abstract An automatic reciprocating magnetic tape recording and reproducing apparatus wherein a driving wheel is interposed between a tape supply reel stand and a tape take-up reel stand, two rockable idlers are provided between said driving wheel and said two reel stands, a frictional member is rotated by said driving wheel to pull said idlers from the opposite ends in such a direction as to elastically press said idlers between said two reel stands and said driving wheel, and either one of said idlers is selectively pressed into contact with the driving wheel and one of the reel stands through the movement of the frictional member which is caused by the forward or reverse rotation of said driving wheel, thereby selectively rotating one of the two reel stands.
Inventors
- 👤 Toshio Morimoto
- 👤 Yoshiaki Fukunaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:51
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; G11B15/29; G11B15/22; G11B15/44; G11B15/444; G11B15/446; G11B15/448; G11B15/46; G11B15/50; G11B15/60; G11B15/62
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
274 words
In a magnetic tape recording and reproducing apparatus, comprising first and second reel stands for mounting tape supply and take-up reels, drive means for selectively driving said reel stands in opposite directions of rotation, first and second flywheels, having tape drive capstans mounted thereon, coupled to and rotatably driven by said drive means, control means coupled to said drive means for controlling the direction of rotation of said reel stands and said flywheels, and braking means mounted for engagement with said flywheels to exert a braking force on at least one of said flywheels when the direction of rotation of said flywheels is changed by said control means, said braking means comprising: a rocker member movably mounted on a base plate of said apparatus; first and second brake rollers mounted on said rocker member for engagement with said first and second flywheels, respectively; a brake lever coupled to said control means for movable between first and second positions depending on the direction of rotation of said reel stands and flywheels; and means coupling said brake lever to said rocker member for moving said rocker member between first and second positions in correspondence with said first and second brake lever positions, wherein in said first position of said rocker member, said first brake roller engages said first flywheel to apply at least a momentary braking force thereto and said second brake roller is disengaged from said second flywheel, and in said second position of said rocker member, said second brake roller engages said second flywheel to apply at least a momentary braking force thereto and said first brake roller is disengaged from said first flywheel.
Claim 2
Dependent Claim
274 words
In a magnetic tape recording and reproducing apparatus, comprising first and second reel stands for mounting tape supply and take-up reels, drive means for selectively driving said reel stands in opposite directions of rotation, first and second flywheels, having tape drive capstans mounted thereon, coupled to and rotatably driven by said drive means, control means coupled to said drive means for controlling the direction of rotation of said reel stands and said flywheels, and braking means mounted for engagement with said flywheels to exert a braking force on at least one of said flywheels when the direction of rotation of said flywheels is changed by said control means, said braking means comprising: a rocker member movably mounted on a base plate of said apparatus; first and second brake rollers mounted on said rocker member for engagement with said first and second flywheels, respectively; a brake lever coupled to said control means for movable between first and second positions depending on the direction of rotation of said reel stands and flywheels; and means coupling said brake lever to said rocker member for moving said rocker member between first and second positions in correspondence with said first and second brake lever positions, wherein in said first position of said rocker member, said first brake roller engages said first flywheel to apply at least a momentary braking force thereto and said second brake roller is disengaged from said second flywheel, and in said second position of said rocker member, said second brake roller engages said second flywheel to apply at least a momentary braking force thereto and said first brake roller is disengaged from said first flywheel.
Claim 3
Dependent Claim
40 words
The apparatus according to claim 1, wherein said rocker member is mounted on said base plate for pivotal movement between its first and second positions and said brake rollers are mounted on axially opposite arm portions of said rocker member.
Claim 4
Dependent Claim
103 words
Apparatus according to claim 1, wherein said means coupling said brake lever to said rocker member comprises spring means having one end portion fixed to said brake lever and an opposite end portion fixed to said rocker member such that in said first position of said brake lever said spring means urges said rocker member into movement toward its first position to engage said first brake roller with said first flywheel, and in said second position of said brake lever said spring means urges said rocker member into movement toward its second position to engage said second brake roller with said second flywheel.
Claim 5
Dependent Claim
86 words
The apparatus according to claim 3, wherein said control means comprises a solenoid which is deenergized during rotation of said reel stands and said flywheels in their first direction, means for energizing said solenoid coincident with a reversal of the direction of rotation of said reel stands and flywheels, means coupling said brake lever to said solenoid for moving said brake lever toward its second position when said solenoid is energized, and means urging said brake lever towards its first position when said solenoid is deenergized.
References Cited (Backward Citations)
US3009663A
Cited
US3409239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |