US4081848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head carrier providing independent protrusion adjustment
Assignee: Eastman Kodak Co
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Filing: 1976-04-22
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Granted: 1978-03-28
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Expires: 1996-04-22
Abstract
Abstract A carrier for mounting a pair of magnetic heads to a rotatable head drum section of a helical-scan magnetic tape unit includes two head mounting pads held in a spaced-apart relationship by one or more C-shaped flexible connecting sections. The pads preferably have opposed edges which are arranged to define a reference direction perpendicular to the axis between the head gaps (head pair axis). With this configuration, head protrusion may be independently adjusted by flexing the C-shaped section and, using such opposed edges for reference, dihedral correction (to align the head pair axis with the drum rotary axis) may be made without disturbing head protrusion.
Inventors
- 👤 Douglass Lane Blanding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:47
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/52; G11B5/53
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
For attaching a pair of magnetic heads to a rotatable drum section, a carrier element comprising: first and second substantially planar head mounting pads each of which has a surface adapted to receive a respective head of such a head pair; at least one flexible C-shaped section rigidly connected at each end to a respective one of said pads, said pads being arranged in a spaced-apart relationship, for defining a space therebetween to permit adjustment movements along a reference line extending between centers thereof, without significantly shifting that line, by flexing said C-shaped sections and changing the degree of curvature thereof.
Claim 2
Dependent Claim
101 words
For attaching a pair of magnetic heads to a rotatable drum section, a carrier element comprising: first and second substantially planar head mounting pads each of which has a surface adapted to receive a respective head of such a head pair; at least one flexible C-shaped section rigidly connected at each end to a respective one of said pads, said pads being arranged in a spaced-apart relationship, for defining a space therebetween to permit adjustment movements along a reference line extending between centers thereof, without significantly shifting that line, by flexing said C-shaped sections and changing the degree of curvature thereof.
Claim 3
Dependent Claim
37 words
A carrier element according to claim 1 wherein said pads have opposed edges which are in parallel alignment to guide movement of the carrier in a direction perpendicular to said reference line for purposes of dihedral correction.
Claim 4
Dependent Claim
45 words
A carrier element according to claim 2 wherein two flexible C-shaped sections of similar shape are utilized, such sections being arranged symmetrically on each side of said reference line and in a plane with said pads so as to produce a generally circular carrier configuration.
Claim 5
Dependent Claim
126 words
A carrier for mounting a pair of magnetic heads to a drum section comprising: a pair of mounting pads, each of which is adapted to receive one head of such a head pair; a first flexible C-shaped section which is rigidly attached at each tip to a respective pad of said pair of pads, said pads being in a spaced-apart relationship to define a space therebetween; and a second flexible C-shaped section arranged opposite said dirst C-shaped section to produce a generally symmetrical ringlike configuration, said second section being rigidly attached at each tip thereof to a respective pad of said pair of pads, whereby the distance separating said pads is adjustable by flexing said first and second sections to change the degree of curvature thereof.
Claim 6
Dependent Claim
126 words
A carrier for mounting a pair of magnetic heads to a drum section comprising: a pair of mounting pads, each of which is adapted to receive one head of such a head pair; a first flexible C-shaped section which is rigidly attached at each tip to a respective pad of said pair of pads, said pads being in a spaced-apart relationship to define a space therebetween; and a second flexible C-shaped section arranged opposite said dirst C-shaped section to produce a generally symmetrical ringlike configuration, said second section being rigidly attached at each tip thereof to a respective pad of said pair of pads, whereby the distance separating said pads is adjustable by flexing said first and second sections to change the degree of curvature thereof.
Claim 7
Dependent Claim
20 words
A carrier according to claim 1 wherein said flexible C-shaped sections and said pads lie in substantially the same plane.
Claim 8
Dependent Claim
101 words
A head carrier unit for attachment to a face of a rotatable head drum section comprising: a pair of pads, each of which has a magnetic head rigidly attached to a surface thereof; at least one flexible C-shaped section connected to a respective one of said pads at each section end, and arranged to hold said pads in a spaced-apart relationship, to define a space therebetween so that the distance between said pads is adjustable by flexing said C-shaped section(s) to change the degree of curvature thereof; and means for adjustably fastening said pads to said face of the drum section.
Claim 9
Dependent Claim
101 words
A head carrier unit for attachment to a face of a rotatable head drum section comprising: a pair of pads, each of which has a magnetic head rigidly attached to a surface thereof; at least one flexible C-shaped section connected to a respective one of said pads at each section end, and arranged to hold said pads in a spaced-apart relationship, to define a space therebetween so that the distance between said pads is adjustable by flexing said C-shaped section(s) to change the degree of curvature thereof; and means for adjustably fastening said pads to said face of the drum section.
Claim 10
Dependent Claim
57 words
A carrier according to claim 6 wherein said pads have opposed edges which reference a direction perpendicular to an axis passing generally through the centers of both said heads and wherein cam receiving means is located centrally of one C-shaped section for transmitting adjustment motion relative to said rotatable drum section having a component in said direction.
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) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |