US3813690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape reciprocating drive type tape recorder
Assignee: Victor Company of Japan Ltd
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Filing: 1972-06-15
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Granted: 1974-05-28
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Expires: 1992-06-15
Abstract
Abstract A tape reciprocating drive type tape recorder has two pulleys having a suitable degree of frictional resistance and rotatably mounted on the opposite ends of a swinging arm in a manner to confront two reel bases and means for transmitting rotational power in a regular direction or reverse direction to the two pulleys. The swinging arm swings in accordance with the rotational direction of the two pulleys, whereby, in accordance with the rotational direction thereof, one of the pulleys presses against the corresponding reel base to transmit rotational power thereto. By merely changing over the rotational direction of the pulleys, the two pulleys can be selectively caused to press against the reel bases.
Inventors
- 👤 T Oka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:44
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/44; G11B15/444; G11B15/446; G11B15/448; G11B15/22; G11B15/26; G11B15/28; G11B15/29; G11B15/46; G11B15/50; G11B15/60; G11B15/62
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
243 words
A reciprocating drive type tape recorder comprising: first and second tape reel discs respectively supporting tape reels thereon and rotatable supported in mutually spaced-apart positions; a swinging arm pivotally supported at its middle part; first and second pulleys pivotally supported on respective ends of said swinging arm and disposed to confront respectively said two reel discs in spaced-apart relation thereto; a driving power source; a third pulley rotationally driven selectively in one direction or the reverse direction by said driving power source; an endless belt passed around said first, second, and third pulleys; friction plates respectively disposed on the ends of the swinging arm in frictional contact with the first and second pulleys thereby to impart to the swinging arm rotation power in directions corresponding to the rotational directions of the first and second pulleys; a capstan rotated selectively in one direction or the reverse direction; a pinch roller for pressing a magnetic tape against said capstan, said tape being unwound from one of said reels; and first and second groups of magnetic heads respectively on two opposite sides of the capstan and selectively operated in accordance with the direction of travel of said tape, said swinging arm being rotated in a direction corresponding to the direction of rotation of the first and second pulleys, said first and second pulleys operating to press selectively against the first and second tape reel discs to transmit rotational power thereto and thereby to rotate the same.
Claim 2
Dependent Claim
243 words
A reciprocating drive type tape recorder comprising: first and second tape reel discs respectively supporting tape reels thereon and rotatable supported in mutually spaced-apart positions; a swinging arm pivotally supported at its middle part; first and second pulleys pivotally supported on respective ends of said swinging arm and disposed to confront respectively said two reel discs in spaced-apart relation thereto; a driving power source; a third pulley rotationally driven selectively in one direction or the reverse direction by said driving power source; an endless belt passed around said first, second, and third pulleys; friction plates respectively disposed on the ends of the swinging arm in frictional contact with the first and second pulleys thereby to impart to the swinging arm rotation power in directions corresponding to the rotational directions of the first and second pulleys; a capstan rotated selectively in one direction or the reverse direction; a pinch roller for pressing a magnetic tape against said capstan, said tape being unwound from one of said reels; and first and second groups of magnetic heads respectively on two opposite sides of the capstan and selectively operated in accordance with the direction of travel of said tape, said swinging arm being rotated in a direction corresponding to the direction of rotation of the first and second pulleys, said first and second pulleys operating to press selectively against the first and second tape reel discs to transmit rotational power thereto and thereby to rotate the same.
Claim 3
Dependent Claim
76 words
A reciprocating drive type tape recorder as set forth in claim 1 which further comprises first and second pressing means for pressing the magnetic tape against the first and second groups of magnetic heads and means for suppressing the pressing action of the pressing means on the side corresponding to that pulley of the first and second pulleys which is pressing against the reel disc in the accordance with the swinging direction of the swinging arm.
Claim 4
Dependent Claim
49 words
A reciprocating drive type tape recorder as set froth in claim 1 in which said driving power source comprises a single motor capable of rotating in one direction and the reverse direction, and said third pulley and said capstan are rotated by rotational power transmitted thereto from said motor.
Claim 5
Dependent Claim
88 words
A reciprocating drive type tape recorder as set forth in claim 1 which fruther comprises a sliding cam bar disposed below the swinging arm to be slidingly moved selectively between three positions corresponding to recording-reproducing, stopping, and fast tape traveling and having an opening of hour-glass shape and a pin provided on the lower surface of the swinging arm and fitted in said opening, said pin being positioned in the constricted part of the opening of hour-glass shape when said sliding cam bar is in the stopping position.
Claim 6
Dependent Claim
97 words
A reciprocating drive type tape recorder as set forth in claim 4 in which: each of said reel discs comprises a reel mounting base, a friction disc, and a take-up disc frictionally coupled together; said swinging arm is journaled in a manner permitting vertical movement thereof; and the sliding cam bar has a cam surface for actuating the swinging arm in vertical movment thereby to cause the first and second pulleys to confront the take-up discs at the time of recording and reproducing operation and to confront the friction discs at the time of fast tape travel.
Claim 7
Dependent Claim
134 words
A reciprocating drive type tape recorder as set forth in claim 4 which further comprises: a sliding member extending parallell to the line on which the centers of the two reel discs lie and actuated to slide between three positions corresponding to recording-reproducing, stopping, and fast tape traveling; means for transmitting the sliding movement of said sliding member to the sliding cam bar; first and second pressing means operating in accordance with the sliding movement of the sliding member to press the magnetic tape against the first and second groups of magnetic heads; and means for suppressing the pressing action of the pressing means on the side corresponding to that pulley of the first and second pulleys which is pressed against the reel base in accordance with the swinging direction of the swinging arm.
References Cited (Backward Citations)
US3419686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |