US4646181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic head retaining device
Assignee: Omron Corp
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Filing: 1984-05-11
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Granted: 1987-02-24
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Expires: 2004-05-11
Abstract
Abstract A magnetic head retaining device, comprising a support member carrying a magnetic head which contacts a magnetic recording medium such as a magnetic card moving in one direction relative thereto and at least a pair of support holes provided downstream and upstream to the magnetic head on an imaginary line passing through the magnetic head in parallel to the direction of the motion of the magnetic recording medium and a mounting member having at least a pair of legs inserted through the corresponding support holes and a spring portion for biasing the legs downwards. Each of the legs is provided with a step for restricting the upward motion of the supporting member. By forming the mounting member out of a single plate, the device may have the flexibility required for achieving an intimate contact between the magnetic head and the magnetic medium and the rigidity required for accurately positioning the magnetic head.
Inventors
- 👤 Masamichi Morigaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:59
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G06; G06K; G06K7/00; G06K7/08; G06K7/082; G06K7/083; G06K7/084; G11B25/00; G11B25/04; G11B5/58
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
179 words
A magnetic head retaining device, comprising: a support member having fixedly secured thereto a magnetic head having a detecting surface which contacts a magnetic recording medium moving in one direction relative thereto and at least a pair of support holes provided downstream and upstream to the magnetic head relative to the motion of the magnetic recording medium on an imaginary line passing through the magnetic head in parallel to the direction of the motion of the magnetic recording medium; and a mounting member having at least a pair of leg portions inserted through the corresponding support holes so that said support member is tiltable about said imaginary line, spring portions for biasing the leg portion downwards relative to the plane of the support member and toward said magnetic recording medium, and a mounting end portion for fixedly securing the mounting member, each of the leg portions having a step which restricts the upward motion of the support member relative to said leg portions, thereby biasing said detecting surface of said magnetic head into contact with said magnetic recording medium.
Claim 2
Dependent Claim
179 words
A magnetic head retaining device, comprising: a support member having fixedly secured thereto a magnetic head having a detecting surface which contacts a magnetic recording medium moving in one direction relative thereto and at least a pair of support holes provided downstream and upstream to the magnetic head relative to the motion of the magnetic recording medium on an imaginary line passing through the magnetic head in parallel to the direction of the motion of the magnetic recording medium; and a mounting member having at least a pair of leg portions inserted through the corresponding support holes so that said support member is tiltable about said imaginary line, spring portions for biasing the leg portion downwards relative to the plane of the support member and toward said magnetic recording medium, and a mounting end portion for fixedly securing the mounting member, each of the leg portions having a step which restricts the upward motion of the support member relative to said leg portions, thereby biasing said detecting surface of said magnetic head into contact with said magnetic recording medium.
Claim 3
Dependent Claim
56 words
A magnetic head retaining device according to claim 1, wherein the mounting member consists of a plate bent into an L-shape with one portion thereof bifurcated into the leg portions extending along the direction of the relative motion of the magnetic medium and the other end thereof forming the spring end and the mounting end portion.
Claim 4
Dependent Claim
35 words
A magnetic head retaining device according to claim 1, wherein the support holes consist of slots which are elongated along the direction of the motion of the magnetic medium and loosely accommodate the leg portions.
Claim 5
Dependent Claim
31 words
A magnetic head retaining device according to claim 3, wherein the spring portions are adapted to allow some upward motion of the support member and to bias the support member downwards.
Claim 6
Dependent Claim
35 words
A magnetic head retaining device according to claim 4, wherein a guide means is additionally provided permitting motion of the support member substantially only along a direction perpendicular to the place of the support member.
Claim 7
Dependent Claim
63 words
A magnetic head retaining device according to claim 5, wherein the guide means comprises a pair of pins which are fixedly secured to a fixed part and passed through a pair of guide holes provided in the support member, downstream and upstream of the leg portions of the mounting member on the imaginary line passing through the support holes and the magnetic head.
Claim 8
Dependent Claim
64 words
A magnetic head retaining device according to claim 6, wherein the ends of the downwardly biased leg portions are located slightly higher than the detecting surface of the magnetic head and together with a guide member for the magnetic recording medium define the maximum height of the magnetic medium which may be permitted to be conveyed along the detecting surface of the magnetic head.
References Cited (Backward Citations)
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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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |