US3800324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording and reproducing apparatus
Assignee: Nakamichi Research Inc
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Filing: 1972-07-13
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Granted: 1974-03-26
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Expires: 1992-07-13
Abstract
Abstract A magnetic recording and reproducing apparatus for use with a cassette including a pair of reels between which a magnetic tape is wound, comprising a magnetic head movable between an advanced position in which the magnetic head contacts the tape in the cassette and a retracted position in which the head is apart from the cassette, a capstan for feeding the tape in the cassette and a pinch roller arranged to associate with the magnetic head for forcing the tape against the capstan, said cassette having a nonoperative position in which the cassette can be received into the apparatus and withdrawn therefrom and an operative position in which the cassette cooperates with the magnetic head and the pinch roller in the advanced position and the capstan to record on or reproduce from the tape in the cassette, said apparatus including a tension device adapted to resiliently apply tension on the tape in the cassette when the cassette is in the operative position, comprising a tension arm having an engaging portion for engaging the tape in an anti-frictional manner, said tension device associated with said magnetic head and said pinch roller so that when the said magnetic head and said pinch roller engage the tape, said engaging portion of said tension arm is forced against the tape and when said head and said pinch roller are disengaged with the tape, said engaging portion of said tension arm is apart from the tape.
Inventors
- 👤 N Nakamichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/1883; G11B15/43; G11B15/675
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
244 words
A magnetic recording and reproducing apparatus for use with a cassette including a pair of reels between which a magnetic tape is wound, comprising a magnetic head movable between an advanced position in which the magnetic head contacts the tape in the cassette and a retracted position in which the magnetic head is apart from the cassette, a capstan for feeding the magnetic tape in the cassette and a pinch roller arranged to associate with the magnetic head for forcing the tape against the capstan, said cassette having a non-operative position in which the cassette can be received into the apparatus and withdrawn therefrom and an operative position in which the cassette cooperates with the magnetic head and the pinch roller in the advanced position and the capstan to record on or reproduce from the tape in the cassette, said apparatus including a tension device arranged to resiliently apply tension on the magnetic tape in the cassette when the cassette is in the operative position, comprising a tension arm having an engaging portion for engaging the tape in an anti-frictional manner, said tension device associated with said magnetic head and said pinch roller so that when said magnetic head and said pinch roller engage the tape, said engaging portion of said tension arm is forced against the tape and when said magnetic head and said pinch roller are disengaged with the tape, said engaging portion of said tension arm is apart from the tape.
Claim 2
Dependent Claim
244 words
A magnetic recording and reproducing apparatus for use with a cassette including a pair of reels between which a magnetic tape is wound, comprising a magnetic head movable between an advanced position in which the magnetic head contacts the tape in the cassette and a retracted position in which the magnetic head is apart from the cassette, a capstan for feeding the magnetic tape in the cassette and a pinch roller arranged to associate with the magnetic head for forcing the tape against the capstan, said cassette having a non-operative position in which the cassette can be received into the apparatus and withdrawn therefrom and an operative position in which the cassette cooperates with the magnetic head and the pinch roller in the advanced position and the capstan to record on or reproduce from the tape in the cassette, said apparatus including a tension device arranged to resiliently apply tension on the magnetic tape in the cassette when the cassette is in the operative position, comprising a tension arm having an engaging portion for engaging the tape in an anti-frictional manner, said tension device associated with said magnetic head and said pinch roller so that when said magnetic head and said pinch roller engage the tape, said engaging portion of said tension arm is forced against the tape and when said magnetic head and said pinch roller are disengaged with the tape, said engaging portion of said tension arm is apart from the tape.
Claim 3
Dependent Claim
86 words
A magnetic recording and reproducing apparatus as set forth in claim 1 wherein said magnetic head is mounted on a head supporting lever pivoted about its pivot axis and wherein said tension arm is formed of a resilient material with one end of said tension arm secured to said head supporting lever so that said tension arm together with said magnetic head moves between the advanced position and the retracted position, and with the other end of said tension arm having said engaging portion provided thereon.
Claim 4
Dependent Claim
25 words
A magnetic recording and reproducing apparatus as set forth in claim 2 wherein said engaging portion on said tension arm is formed of anti-frictional material.
Claim 5
Dependent Claim
28 words
A magnetic recording and reproducing apparatus as set forth in claim 2 wherein said engaging portion of said tension arm comprises a roller pivotally mounted on said arm.
Claim 6
Dependent Claim
46 words
A magnetic recording and reproducing apparatus as set forth in claim 2 wherein said resilient arm is provided with a pair of guide plates arranged so that the tape passes between them and said engaging portion on said tension arm is mounted on said guide plates.
Claim 7
Dependent Claim
90 words
A magnetic recording and reproducing apparatus as set forth in claim 1 wherein said magnetic head is mounted on a head supporting lever pivoted about its pivot axis and wherein said tension arm is formed of a rigid material pivoted about its pivot axis, said tension further including spring means for urging said tension arm toward the advanced position in which the engaging portion on said tension arm is forced against the tape in the cassette and connecting means for associating the said tension arm with said head supporting lever.
Claim 8
Dependent Claim
53 words
A magnetic recording and reproducing apparatus as set forth in claim 6 wherein said connecting means is so arranged that said connecting means is free of said tension arm when said tension arm is in the advanced position in which said engaging portion of said tension arm is forced against the magnetic tape.
Claim 9
Dependent Claim
41 words
A magnetic recording and reproducing apparatus as set forth in claim 6 wherein said engaging portion of said tension arm is provided with guide means for guiding the tape so that the tape contacts the predetermined track of said magnetic head.
Claim 10
Dependent Claim
25 words
A magnetic recording and reproducing apparatus as set forth in claim 6 wherein said engaging portion of said tension arm is formed of anti-frictional material.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |