US4307427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pad abutting device for a magnetic head of a dual capstan type cassette tape recorder
Assignee: Nakamichi Corp
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Filing: 1980-01-18
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Granted: 1981-12-22
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Expires: 2000-01-18
Abstract
Abstract This invention relates to a pad abutting device for a magnetic head of a dual capstan type cassette tape recorder. This pad abutting device comprises a pair of upper and lower abutting members mounted on a front face of a magnetic head which is to be extended through an opening of a cassette having a pad provided therein, the abutting members being disposed apart by a distance less than the width of the pad, but greater than the width of a magnetic tape in the cassette. When the cassette is placed in the tape recorder so that the magnetic head enters the opening of the cassette, the abutting members abut against the pad at its upper and lower edges whereby the pad is prevented from resiliently pressing the magnetic tape against the magnetic head. Each of the pad abutting members comprises a spacer provided integrally with the body of the respective pad abutting member, disposed between the body of the pad abutting member and the front face of the magnetic head so as to abut against the latter, the spacers of the abutting members having a thickness greater than that of the magnetic tape, respectively and being disposed apart by a distance substantially greater than the space between the upper and lower abutting members.
Inventors
- 👤 Hideo Kawachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:49
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/62
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
A pad abutting device for a dual capstan type magnetic cassette tape recorder having a magnetic head with a front face which is to be extended through an opening of a cassette mounted thereon, with said cassette giving a pad provided therein, comprising a pair of upper and lower abutting members mounted on the front face of the magnetic head, said abutting members being disposed adjacent opposite edges of the magnetic tape and spaced apart by a distance less than the width of the pad and greater than the width of the magnetic tape in the cassette whereby the pad is prevented from resiliently pressing the magnetic tape against the front face of said magnetic head when said magnetic head is introduced into the cassette, each of said abutting members including a spacer provided integrally therewith and disposed between the body of the corresponding abutting member and the front face of said magnetic head so that said spacer abuts against the front face of said magnetic head, and said spacers of said abutting members having a thickness greater than that of the magnetic tape and being disposed apart by a distance substantially greater than the space between said upper and lower abutting members.
Claim 2
Dependent Claim
203 words
A pad abutting device for a dual capstan type magnetic cassette tape recorder having a magnetic head with a front face which is to be extended through an opening of a cassette mounted thereon, with said cassette giving a pad provided therein, comprising a pair of upper and lower abutting members mounted on the front face of the magnetic head, said abutting members being disposed adjacent opposite edges of the magnetic tape and spaced apart by a distance less than the width of the pad and greater than the width of the magnetic tape in the cassette whereby the pad is prevented from resiliently pressing the magnetic tape against the front face of said magnetic head when said magnetic head is introduced into the cassette, each of said abutting members including a spacer provided integrally therewith and disposed between the body of the corresponding abutting member and the front face of said magnetic head so that said spacer abuts against the front face of said magnetic head, and said spacers of said abutting members having a thickness greater than that of the magnetic tape and being disposed apart by a distance substantially greater than the space between said upper and lower abutting members.
Claim 3
Dependent Claim
36 words
A pad abutting device as set forth in claim 1, in which said upper and lower abutting members are formed integrally with common right and left mounting bases which are securely mounted on said magnetic head.
Claim 4
Dependent Claim
61 words
A pad abutting device as set forth in claim 2, in which each of said mounting bases comprises a side wall and upper and lower walls provided integrally with said side wall, said upper and lower walls being resiliently engaged with the upper and lower faces of said magnetic head so that said mounting bases are mounted on said magnetic head.
Claim 5
Dependent Claim
28 words
A pad abutting device as set forth in claim 2, in which each of said abutting members includes a leg connecting said abutting member with said mounting base.
Claim 6
Dependent Claim
25 words
A pad abutting device as set forth in claim 4, in which said leg has a length substantially greater than the thickness of said spacers.
Claim 7
Dependent Claim
39 words
A pad abutting device as set forth in claim 4, in which said legs of said abutting members have respective notches which are disposed apart by a distance greater than the space between said upper and lower abutting members.
Claim 8
Dependent Claim
30 words
A pad abutting device as set forth in claim 1, in which said spacers of said abutting members are made by deforming metal materials of said abutting members by pressing.
Claim 9
Dependent Claim
41 words
A pad abutting device as set forth in claim 1, in which said upper and lower abutting members are formed integrally with upper and lower mounting bases, respectively, which are mounted on said magnetic head at its upper and lower faces.
Claim 10
Dependent Claim
30 words
A pad abutting device as set forth in claim 8, in which said spacers of said abutting members are made by deforming metal materials of said abutting members by pressing.
Claim 11
Dependent Claim
32 words
A pad abutting device as set forth in claim 8, in which said spacers of said abutting members are made by forming inclined faces at the back faces of said abutting members.
References Cited (Backward Citations)
US3777070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |