US4747003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head shifting device for information recording and/or reproducing apparatus
Assignee: Canon Inc
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Filing: 1986-10-28
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Granted: 1988-05-24
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Expires: 2006-10-28
Abstract
Abstract A head shifting device having a movable head carriage mechanism which carries a head is movable to shift the head to a selected position on a record bearing medium. A moving mechanism which is arranged to move the head carriage mechanism is provided with a positioning device, and a restricting device is arranged to change its position in association with the movement of the head carriage mechanism and to restrict the head carriage mechanism at each of the moved positions thereof.
Inventors
- 👤 Nobuo Tezuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:26
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/10; G11B21/00; G11B21/02; G11B21/08; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
142 words
In a recording or reproducing apparatus including a recording and/or reproducing head using a rotary type record bearing medium having a recording surface, a device for linearly and intermittently shifting said recording and/or reproducing head along the recording surface of the medium, comprising: (A) a head carriage for carrying said head, said carriage being linearly movable along a first axis to shift the head along the recording surface of the medium and having a cam slot formed along a second axis which forms a predetermined angle relative to said first axis; (B) an engaging member engaged with said cam slot of said head carriage; and (C) a drive mechanism for linearly moving said engaging member along a third axis which forms angles relative to said first and second axis so that the engaging member moves said head carriage through said cam slot.
Claim 2
Dependent Claim
142 words
In a recording or reproducing apparatus including a recording and/or reproducing head using a rotary type record bearing medium having a recording surface, a device for linearly and intermittently shifting said recording and/or reproducing head along the recording surface of the medium, comprising: (A) a head carriage for carrying said head, said carriage being linearly movable along a first axis to shift the head along the recording surface of the medium and having a cam slot formed along a second axis which forms a predetermined angle relative to said first axis; (B) an engaging member engaged with said cam slot of said head carriage; and (C) a drive mechanism for linearly moving said engaging member along a third axis which forms angles relative to said first and second axis so that the engaging member moves said head carriage through said cam slot.
Claim 3
Dependent Claim
145 words
A head shifting device comprising: head means for recording and/or reproducing a signal to or from a record bearing medium and carriage means for carrying said head means, said carriage means being movable to shift said head means; a moving mechanism for moving said carriage means, said moving mechanism including positioning means for positioning said carriage means at each moved position thereof; and restriction means movable in response to said moving mechanism for restricting movement of said carriage means at each moved position thereof; said carriage means being linearly movable along a first axis and having a slot along a second axis which forms a predetermined angle relative to said first axis, said restriction means including an engaging member engaged with said slot of said carriage means and a moving member for moving said engaging member within said slot in response to said moving mechanism.
Claim 4
Dependent Claim
145 words
A head shifting device comprising: head means for recording and/or reproducing a signal to or from a record bearing medium and carriage means for carrying said head means, said carriage means being movable to shift said head means; a moving mechanism for moving said carriage means, said moving mechanism including positioning means for positioning said carriage means at each moved position thereof; and restriction means movable in response to said moving mechanism for restricting movement of said carriage means at each moved position thereof; said carriage means being linearly movable along a first axis and having a slot along a second axis which forms a predetermined angle relative to said first axis, said restriction means including an engaging member engaged with said slot of said carriage means and a moving member for moving said engaging member within said slot in response to said moving mechanism.
Claim 5
Dependent Claim
153 words
A head shifting device comprising: head means for recording and/ or reproducing a signal to or from a record bearing medium and carriage means for carrying said head means, said carriage means being movable to shift said head means; a moving mechanism for moving said carriage means, said moving mechanism including positioning means for positioning said carriage means at each moved position thereof; and restriction means movable in response to said moving mechanism for restricting movement of said carriage means at each moved position thereof; said carriage means being linerarly movable along a first axis and having an engaging member, said restriction means including a movable member movable in response to said moving mechanism and having a slot along a second axis, said movable member being arranged so that said second axis forms a predetermined angle relative to said first axis, said engaging member of said carriage means being engaged with said slot.
Claim 6
Dependent Claim
153 words
A head shifting device comprising: head means for recording and/ or reproducing a signal to or from a record bearing medium and carriage means for carrying said head means, said carriage means being movable to shift said head means; a moving mechanism for moving said carriage means, said moving mechanism including positioning means for positioning said carriage means at each moved position thereof; and restriction means movable in response to said moving mechanism for restricting movement of said carriage means at each moved position thereof; said carriage means being linerarly movable along a first axis and having an engaging member, said restriction means including a movable member movable in response to said moving mechanism and having a slot along a second axis, said movable member being arranged so that said second axis forms a predetermined angle relative to said first axis, said engaging member of said carriage means being engaged with said slot.
Claim 7
Dependent Claim
170 words
In recording or reproducing apparatus including a recording and/or reproducing head using a rotary type record bearing medium having a recording surface, a device for linearly and intermittently shifting said recording and/or reproducing head along the recording surface of the medium, comprising: a head carriage for carrying said head, said carriage being linearly movable to shift the head along the recording surface of the medium; a cam for moving said head carriage; a ratchet mechanism for intermittently driving said cam; and restriction means for restricting movement of said head carriage at each moved postion thereof, said restriction means being operatively connected with said ratchet mechanism and movable in response thereto; said head carriage being movable along a first axis and having a slot along a second axis which forms a predetermined angle relative to said first axis, said restriction means including an engaging member engaged with said slot of said head carriage and a moving member for moving said engaging member within said slot in response to said ratchet mechanism.
Claim 8
Dependent Claim
170 words
In recording or reproducing apparatus including a recording and/or reproducing head using a rotary type record bearing medium having a recording surface, a device for linearly and intermittently shifting said recording and/or reproducing head along the recording surface of the medium, comprising: a head carriage for carrying said head, said carriage being linearly movable to shift the head along the recording surface of the medium; a cam for moving said head carriage; a ratchet mechanism for intermittently driving said cam; and restriction means for restricting movement of said head carriage at each moved postion thereof, said restriction means being operatively connected with said ratchet mechanism and movable in response thereto; said head carriage being movable along a first axis and having a slot along a second axis which forms a predetermined angle relative to said first axis, said restriction means including an engaging member engaged with said slot of said head carriage and a moving member for moving said engaging member within said slot in response to said ratchet mechanism.
Claim 9
Dependent Claim
177 words
In recording or reproducing apparatus including a recording and/or reproducing head using a rotary type record bearing medium having a recording surface, a device for linearly and intermittently shifting said recording and/or reproducing head along the recording surface of the medium, comprising: a head carriage for carrying said head, said carriage being linearly movable to shift the head along the recording surface of the medium; a cam for moving said head carriage; a ratchet mechanism for intermittently driving said cam; and restriction means for restricting movement of said head carriage at each moved position thereof, said restriction means being operatively connected with said ratchet mechanism and movable in response thereto; said head carriage being movable along a first axis and having an engaging member, said restriction means including a movable member movable in response to said ratchet mechanism and having a slot along a second axis, said movable member being arranged so that said second axis forms a predetermined angle relative to said first axis, said engaging member of said head carriage being engaged with said slot.
Claim 10
Dependent Claim
177 words
In recording or reproducing apparatus including a recording and/or reproducing head using a rotary type record bearing medium having a recording surface, a device for linearly and intermittently shifting said recording and/or reproducing head along the recording surface of the medium, comprising: a head carriage for carrying said head, said carriage being linearly movable to shift the head along the recording surface of the medium; a cam for moving said head carriage; a ratchet mechanism for intermittently driving said cam; and restriction means for restricting movement of said head carriage at each moved position thereof, said restriction means being operatively connected with said ratchet mechanism and movable in response thereto; said head carriage being movable along a first axis and having an engaging member, said restriction means including a movable member movable in response to said ratchet mechanism and having a slot along a second axis, said movable member being arranged so that said second axis forms a predetermined angle relative to said first axis, said engaging member of said head carriage being engaged with said slot.
Claim 11
Independent Claim
133 words
An apparatus having a transducer head, comprising: (a) a head carriage having said transducer head placed thereon and being supported in a freely movable manner in a first direction on a chassis for moving said head along a recording plane of a recording medium. (b) a cam for controlling a movement of said head carriage in the first direction, said cam forming at its external circumference a cam surface for engaging an engaging part of said head carriage; and (c) restricting means being provided in a freely movable manner in a second direction, different from said first direction and cooperating with said head carriage via camming engagement, for restricting the movement of said head carriage in said first direction against said chassis at each one of respective moving positions of said head carriage.
Claim 12
Independent Claim
133 words
An apparatus having a transducer head, comprising: (a) a head carriage having said transducer head placed thereon and being supported in a freely movable manner in a first direction on a chassis for moving said head along a recording plane of a recording medium. (b) a cam for controlling a movement of said head carriage in the first direction, said cam forming at its external circumference a cam surface for engaging an engaging part of said head carriage; and (c) restricting means being provided in a freely movable manner in a second direction, different from said first direction and cooperating with said head carriage via camming engagement, for restricting the movement of said head carriage in said first direction against said chassis at each one of respective moving positions of said head carriage.
Claim 13
Independent Claim
105 words
An apparatus having a transducer head, comprising: (a) a head carriage for carrying said transducer head in a first direction; (b) driving means for driving said head carriage in said first direction, said driving means having a cam which forms, at an external side plane, an outer cam face engaging with said head carriage for driving the head carriage by driving said cam; (c) restricting means, moving in a second direction, different from said first direction, and cooperating with said head carriage via camming engagement, for restricting the movement of said head carriage in said first direction at each moving position of said head carriage.
Claim 14
Independent Claim
105 words
An apparatus having a transducer head, comprising: (a) a head carriage for carrying said transducer head in a first direction; (b) driving means for driving said head carriage in said first direction, said driving means having a cam which forms, at an external side plane, an outer cam face engaging with said head carriage for driving the head carriage by driving said cam; (c) restricting means, moving in a second direction, different from said first direction, and cooperating with said head carriage via camming engagement, for restricting the movement of said head carriage in said first direction at each moving position of said head carriage.
Claim 15
Dependent Claim
14 words
An apparatus according to claim 7, wherein said transducer head is a recording head.
Claim 16
Dependent Claim
14 words
An apparatus according to claim 7, wherein said transducer head is a reproducing head.
Claim 17
Dependent Claim
17 words
An apparatus according to claim 7, wherein said transducer head is both a recording and reproducing head.
Claim 18
Dependent Claim
17 words
An apparatus according to claim 7, wherein said driving means includes a motor for rotating said cam.
Claim 19
Dependent Claim
20 words
An apparatus according to claim 11, wherein said carriage has an engaging member which contacts with said outer cam face.
Claim 20
Dependent Claim
53 words
An apparauts according to claim 11, wherein said head carriage has a slot and said restricting means includes; (a) a pin engageable with said slot of said head carriage, (b) a gear rotatable in association with said outer cam face and (c) a member engageable with said gear and having said pin thereon.
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) | 1991-05-24 | 1991-11-23 | 1992-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-24 | 1995-11-23 | 1996-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-24 | 1999-11-23 | 2000-05-24 | $7700.00 | Window Closed / Lapsed |