Patent US3843819A successfully refreshed from Google Patents.
US3602650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for selectively feeding an endless tape at normal or fast feed and for automatically changing from fast feed to normal feed
Assignee: Individual
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Filing: 1969-04-08
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Granted: 1971-08-31
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Expires: 1989-04-08
Abstract
Abstract A tape fast feed control apparatus in an endless magnetic tape cartridge player comprising a rotary drive capstan for driving the tape in the cartridge, an electric motor provided for driving the capstan and having an armature shaft, a first and a second speed reducing device having reduction ratios different from each other for imparting rotation of the armature shaft to the capstan, a selecting device for selecting either one of the first and second speed reducing devices to impart rotation of the armature shaft to the capstan, an electromagnetic device for magnetically engaging the selecting device, a control device for controlling the operation of said electromagnetic device whereby the tape is changed over from normal speed to fast speed and automatically changed over from fast feed to normal speed in relation to the operation of said control device.
Inventors
- 👤 Itsuki Ban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:01
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/44
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
362 words
In an endless magnetic tape cartridge player having a magnetic tape reproducing circuit including a magnetic head, a tape drive device for driving the endless magnetic tape within said cartridge, a deck for seating said cartridge, and a speaker for emitting sound upon receiving the output of the magnetic tape reproducing circuit, a tape speed control apparatus comprising: a rotary capstan for driving the tape within the cartridge and extending from the deck; an electrical motor for driving the capstan, said motor having an armature shaft; a first and a second speed reducing device having reduction ratios different from each other for imparting rotation of said armature shaft of the motor to the capstan; manually operated selecting means for operatively selecting either one of the first or the second speed reducing devices, said selecting means being movable between a first and a second position; bias means biasing said selecting means to said first position where said armature shaft of said motor is connected through the first speed reducing device to said capstan, said tape being driven by said capstan at normal speed when said selecting means is biased to said first position; electromagnetic means for magnetically retaining said manually operated selecting means in said second position where said armature shaft of said motor is connected through said second speed reducing device to said capstan, said tape being driven by said capstan at fast speed when said selecting means is retained in said second position; control means for automatically returning said selecting means from said second position to said first position including means for detecting a nonrecorded zone on said tape, means for producing an electrical signal in response to detection of said nonrecorded zone by said sensing means, and means for applying said electrical signal to said electromagnetic means, said electromagnetic means being adapted to release said retention of said selecting means when said electrical signal is received by said electromagnetic means; and a control circuit for controlling the sound emitted from said speaker, said control circuit being operated by the movement of said selecting means to limit the sound from said speaker when said selecting means is in said second position.
Claim 2
Dependent Claim
362 words
In an endless magnetic tape cartridge player having a magnetic tape reproducing circuit including a magnetic head, a tape drive device for driving the endless magnetic tape within said cartridge, a deck for seating said cartridge, and a speaker for emitting sound upon receiving the output of the magnetic tape reproducing circuit, a tape speed control apparatus comprising: a rotary capstan for driving the tape within the cartridge and extending from the deck; an electrical motor for driving the capstan, said motor having an armature shaft; a first and a second speed reducing device having reduction ratios different from each other for imparting rotation of said armature shaft of the motor to the capstan; manually operated selecting means for operatively selecting either one of the first or the second speed reducing devices, said selecting means being movable between a first and a second position; bias means biasing said selecting means to said first position where said armature shaft of said motor is connected through the first speed reducing device to said capstan, said tape being driven by said capstan at normal speed when said selecting means is biased to said first position; electromagnetic means for magnetically retaining said manually operated selecting means in said second position where said armature shaft of said motor is connected through said second speed reducing device to said capstan, said tape being driven by said capstan at fast speed when said selecting means is retained in said second position; control means for automatically returning said selecting means from said second position to said first position including means for detecting a nonrecorded zone on said tape, means for producing an electrical signal in response to detection of said nonrecorded zone by said sensing means, and means for applying said electrical signal to said electromagnetic means, said electromagnetic means being adapted to release said retention of said selecting means when said electrical signal is received by said electromagnetic means; and a control circuit for controlling the sound emitted from said speaker, said control circuit being operated by the movement of said selecting means to limit the sound from said speaker when said selecting means is in said second position.
Claim 3
Dependent Claim
193 words
Apparatus in accordance with claim 1 wherein said first speed reducing device comprises a drive pulley mounted on said armature shaft of said motor, a capstan pulley mounted on said capstan, and a belt trained between said drive pulley and said capstan pulley; said second speed reducing device comprises a drive wheel mounted on said armature shaft, a capstan wheel mounted on said capstan coaxially with said capstan pulley, and an idler wheel interposed between said drive wheel and said capstan wheel; and said selecting means includes a slide member having a shaft rotatably supporting said idler wheel, said idler wheel being rotatably provided on said shaft and opposed to said belt, and a manually operated pivotally movable lever connected to said slide member; said idler pulley being adapted to abut against said belt to tension said belt for imparting rotation of said drive pulley to said capstan pulley when said selecting means is positioned in said first position, said idler wheel being adapted to engage said drive wheel and said capstan wheel for imparting rotation of said drive wheel to said capstan when said selecting means is positioned in said second position.
Claim 4
Dependent Claim
68 words
Apparatus in accordance with claim 2 wherein said electromagnetic means includes a normally energized first coil, a second coil, means for supplying current to said second coil, said current supply means being controlled by said control means, said coils being arranged such that the magnetic flux produced in said first coil is erased by the magnetic flux produced in said second coil when said second coil is energized.
Claim 5
Dependent Claim
190 words
Apparatus in accordance with claim 1 wherein said first speed reducing device comprises a small drive wheel mounted on said armature shaft of said motor, a large capstan wheel mounted on said capstan, and a first belt provided between said small drive wheel and said large capstan wheel; said second speed reducing device comprises a large drive wheel mounted on said armature shaft, a small capstan wheel on said capstan, and a second belt provided between said large drive wheel and said small capstan wheel; and said selecting means includes a manually operated pivotally movable lever, a belt abutment extending between said first belt and said second belt mounted on said lever, said belt abutment being adapted to abut against said first belt to tension said first belt for imparting rotation of said small drive wheel to said large capstan wheel when said selecting means is positioned in said first position, said belt abutment being adapted to abut against said second belt to tension said second belt for imparting rotation of said large drive wheel to said small capstan wheel when said selecting means is positioned in said second position.
Claim 6
Dependent Claim
84 words
Apparatus in accordance with claim 4 wherein said control circuit includes a transistor provided with base, emitter and collector electrodes and located between a magnetic tape reproducing circuit and said speaker, a thermistor for controlling the base voltage of said transistor, and an electric switch in series with said transistor and said thermistor, said switch being normally closed when said selecting means is positioned in said first position and being adapted to be opened when said selecting means is positioned in said second position.
Claim 7
Dependent Claim
130 words
Apparatus in accordance with claim 4 wherein said control circuit comprises an electrical source for a power amplifier in the magnetic tape reproducing circuit, an electrical switch operable by said selecting means and provided between said electrical source and said power amplifier, a condenser and a resistance both connected in parallel with said power amplifier through said electrical switch, said switch being closed when said selecting means is positioned in said first position, said power amplifier, condenser, and said resistance each being electrically connected to said electrical source when said switch is closed, said switch being opened when said selecting means is positioned in said second position, the parallel connection of said electrical source, power amplifier, condenser, and said resistance each electrically being cut off when said switch is opened.
Claim 8
Dependent Claim
115 words
A tape fast feed control apparatus in an endless magnetic tape cartridge in accordance with claim 4 wherein said control circuit comprises a rheostat for controlling the output of said magnetic tape reproducing circuit, said rheostat having an operating shaft, a coil spring for rotatably driving the operating shaft of said rheostat, a governor device controlling the rotating speed of said operating shaft, an arm secured to said operating shaft, and a wire coupling said arm to said lever of said selecting means, said rheostat being adapted to be gradually varied to the direction which increases the output of said reproducing circuit by changing said selecting means from said second position to said first position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |