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US4003092A Expired / Lapsed US ⏱️ 0.0 years remaining

Reading or writing head positioning device

Assignee: Canon Inc
•
Filing: 1974-11-08
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Granted: 1977-01-11
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Expires: 1994-11-08
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Abstract

Abstract A device for adjusting position of a head for reading out or writing in. The device includes an eccentrically rotatable member which moves the head so as to change its position relative to a recording medium and an actuating member for eccentrically rotating the rotatable member, the actuating member being coupled to the actuating member.

Inventors

  • 👤 Osamu Hirata

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 14:46
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/56; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 146 words
A magnetic head positioning device for a recording medium reader comprising: a base (6) formed to receive an advancing recording medium; a holding member (8) mounted on said base for holding a magnetic head; a magnetic head (1) held by said holding member in a predetermined relationship to a path along which a recording medium may be advanced; first eccentric means (13, 21) rotatably mounted on said base and contacting said holding member to adjust the angle of said head relatively to the direction of advance of the recording medium; and second eccentric means (12, 18) including a member rotatably mounted on said base and contacting said holding member for moving said head in a direction transverse to the direction of movement of the recording medium, movement of said second eccentric means being limited in its ability to move said head by said first eccentric means.
Claim 2
Dependent Claim 146 words
A magnetic head positioning device for a recording medium reader comprising: a base (6) formed to receive an advancing recording medium; a holding member (8) mounted on said base for holding a magnetic head; a magnetic head (1) held by said holding member in a predetermined relationship to a path along which a recording medium may be advanced; first eccentric means (13, 21) rotatably mounted on said base and contacting said holding member to adjust the angle of said head relatively to the direction of advance of the recording medium; and second eccentric means (12, 18) including a member rotatably mounted on said base and contacting said holding member for moving said head in a direction transverse to the direction of movement of the recording medium, movement of said second eccentric means being limited in its ability to move said head by said first eccentric means.
Claim 3
Dependent Claim 157 words
A head positioning device for a recording medium reader comprising: a head for reading out information recorded on a recording medium; a holding member for holding said head; a base for supporting said holding member in stationary relationship to said base with said head facing the path of advancement of the recording medium, said base being formed with an opening through which said head extends to face the recording medium and means to support said holding member; a first adjusting member ecentrically rotatable and contacting said holding member to adjust the angle of said head relative to the direction of the advance of the recording medium, said first adjusting member being rotatably coupled to said base; and a second adjusting member eccentrically rotatable and contacting said holding member to effect movement of said head in a direction transverse to the direction of advance of the recording medium, said second adjusting member being rotatably coupled to said base.
Claim 4
Dependent Claim 157 words
A head positioning device for a recording medium reader comprising: a head for reading out information recorded on a recording medium; a holding member for holding said head; a base for supporting said holding member in stationary relationship to said base with said head facing the path of advancement of the recording medium, said base being formed with an opening through which said head extends to face the recording medium and means to support said holding member; a first adjusting member ecentrically rotatable and contacting said holding member to adjust the angle of said head relative to the direction of the advance of the recording medium, said first adjusting member being rotatably coupled to said base; and a second adjusting member eccentrically rotatable and contacting said holding member to effect movement of said head in a direction transverse to the direction of advance of the recording medium, said second adjusting member being rotatably coupled to said base.
Claim 5
Dependent Claim 146 words
A magnetic head positioning device for a recording medium reader comprising: a magnetic head; a holding member having at least one aperture for holding said magnetic head; a base for supporting said holding member stationary relatively thereto with said head facing the path of advancement of the recording medium, said base being formed with at least two holes; a first adjusting member eccentrically rotatable and adapted to adjust the angle of said head relative to the direction of advance of the recording medium, said first adjusting member being coupled to the first hole of said base through said aperture of said holding member; a second adjusting member eccentrically rotatable and contacting said holding member to effect movement of said head in a direction transverse to the direction of advance of the recording medium, said second adjusting member being coupled to said second hold of said base.
Claim 6
Dependent Claim 146 words
A magnetic head positioning device for a recording medium reader comprising: a magnetic head; a holding member having at least one aperture for holding said magnetic head; a base for supporting said holding member stationary relatively thereto with said head facing the path of advancement of the recording medium, said base being formed with at least two holes; a first adjusting member eccentrically rotatable and adapted to adjust the angle of said head relative to the direction of advance of the recording medium, said first adjusting member being coupled to the first hole of said base through said aperture of said holding member; a second adjusting member eccentrically rotatable and contacting said holding member to effect movement of said head in a direction transverse to the direction of advance of the recording medium, said second adjusting member being coupled to said second hold of said base.
Claim 7
Dependent Claim 35 words
A magnetic head positioning device according to claim 3, wherein said first adjusting member is detachably mounted on said base, and said device further includes fixing means for fixing said holding member on said base.
Claim 8
Dependent Claim 159 words
A magnetic head positioning device for a recording medium reader comprising: a magnetic head; a holding member having means including at least two apertures for holding said magnetic head; a base for supporting said holding member against sliding movement thereon and to position said head to face the recording medium, said base having an opening through which said head extends, and first and second holds for supporting said holding member; a first adjusting member eccentrically rotatable and adapted to adjust the angle of said head relative to the direction of advance of the recording medium, said first adjusting member being coupled to the first hole of said base through said aperture of said holding member; a second adjusting member eccentrically rotatable for moving said head in a direction transverse to the direction of advance of the recording medium, said second adjusting member being coupled to the second hole of said base through the second aperture of said holding member.
Claim 9
Dependent Claim 159 words
A magnetic head positioning device for a recording medium reader comprising: a magnetic head; a holding member having means including at least two apertures for holding said magnetic head; a base for supporting said holding member against sliding movement thereon and to position said head to face the recording medium, said base having an opening through which said head extends, and first and second holds for supporting said holding member; a first adjusting member eccentrically rotatable and adapted to adjust the angle of said head relative to the direction of advance of the recording medium, said first adjusting member being coupled to the first hole of said base through said aperture of said holding member; a second adjusting member eccentrically rotatable for moving said head in a direction transverse to the direction of advance of the recording medium, said second adjusting member being coupled to the second hole of said base through the second aperture of said holding member.
Claim 10
Dependent Claim 35 words
A magnetic head positioning device according to claim 5, wherein said first adjusting member is detachably mounted on said base, and said device further includes fixing means for fixing said holding member on said base.
Claim 11
Dependent Claim 204 words
A magnetic head positioning device for a recording medium reader comprising: a magnetic head; a holding member having means including at least two apertures for holding said magnetic head; a base for supporting said holding member against sliding movement thereon and to position said head to face a recording medium, said base having an opening through which said head extends, and first and second holes for supporting said holding member; a first eccentric means including a rotatable member coupled to the first aperture of said holding member for turning said head to adjust its angle relative to the direction of movement of said recording medium; a first supporting member eccentrically coupled to said first rotatable member and coupled to the first hole of said base and freely rotatable therein; a second eccentric means including a rotatable member for moving said head in a direction transverse to the direction of advance of the recording medium, said second rotatable member being coupled to the second aperture of said holding member and being limited in its ability to move said head by said first eccentric means; and a second supporting member eccentrically coupled to said second rotatable member and coupled to the second hole of said base.
Claim 12
Dependent Claim 204 words
A magnetic head positioning device for a recording medium reader comprising: a magnetic head; a holding member having means including at least two apertures for holding said magnetic head; a base for supporting said holding member against sliding movement thereon and to position said head to face a recording medium, said base having an opening through which said head extends, and first and second holes for supporting said holding member; a first eccentric means including a rotatable member coupled to the first aperture of said holding member for turning said head to adjust its angle relative to the direction of movement of said recording medium; a first supporting member eccentrically coupled to said first rotatable member and coupled to the first hole of said base and freely rotatable therein; a second eccentric means including a rotatable member for moving said head in a direction transverse to the direction of advance of the recording medium, said second rotatable member being coupled to the second aperture of said holding member and being limited in its ability to move said head by said first eccentric means; and a second supporting member eccentrically coupled to said second rotatable member and coupled to the second hole of said base.
Claim 13
Dependent Claim 172 words
A reading or writing head positioning device comprising: a head for writing information on a recording medium or reading information therefrom; a holding member having at least one aperture for holding said head; a base for supporting said holding member being formed with an opening for reception of said head whereby said head faces the recording medium, and first and second holes to support said holding member; first adjusting means including a member eccentrically rotatable and contacting said holding member to adjust the angle of said head relative to the direction of advance of the recording medium, said first adjusting member being rotatably coupled to said first hole of said base; and second adjusting means including a member eccentrically rotatable for moving said head in a direction transverse to the direction of movement of the recording medium, said second adjusting member being coupled to the second hole of said base through the aperture of said holding member and being limited in its ability to move said head by said first adjusting means.
Claim 14
Dependent Claim 172 words
A reading or writing head positioning device comprising: a head for writing information on a recording medium or reading information therefrom; a holding member having at least one aperture for holding said head; a base for supporting said holding member being formed with an opening for reception of said head whereby said head faces the recording medium, and first and second holes to support said holding member; first adjusting means including a member eccentrically rotatable and contacting said holding member to adjust the angle of said head relative to the direction of advance of the recording medium, said first adjusting member being rotatably coupled to said first hole of said base; and second adjusting means including a member eccentrically rotatable for moving said head in a direction transverse to the direction of movement of the recording medium, said second adjusting member being coupled to the second hole of said base through the aperture of said holding member and being limited in its ability to move said head by said first adjusting means.
Claim 15
Dependent Claim 35 words
A reading or writing head according to claim 8, wherein said first adjusting member is detachably mounted on said base, and said device further includes fixing means for fixing said holding member on said base.

References Cited (Backward Citations)

US2535480A Cited
US2986607A Cited
US2997360A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-01-11 1980-07-12 1981-01-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-01-11 1984-07-12 1985-01-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-01-11 1988-07-12 1989-01-11 $7700.00 Window Closed / Lapsed

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