Patent US3770907A successfully refreshed from Google Patents.
US3770907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic disc recorder with transducer accessing mechanism utilizing a counterweighted arm
Assignee: Meritor Inc
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Filing: 1972-06-27
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Granted: 1973-11-06
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Expires: 1992-06-27
Abstract
Abstract A magnetic disc recorder has a rotatable flexible record disc, a transducer interfacing with the disc and carried on a slide movable toward and away from the disc surface. The slide moves on a block which is movable to carry the transducer along a radius of the disc. A counterweighted arm acts between the block and slide urging the transducer to interface with the disc and providing an inertial mass which damps unwanted motion of the transducer.
Inventors
- 👤 R Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:45
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/041; G11B17/043; G11B17/0434; G11B3/00; G11B3/58; G11B3/5809; G11B3/5818; G11B3/5827; G11B5/00; G11B5/48; G11B5/58
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
In a magnetic recorder having a rotatable flexible record disc arranged to rotate in a plane and a transducer mounted to interface with a small portion of the disc surface as it revolves; the improvement comprising compliant mounting means supporting said transducer for movement toward and away from the plane of rotation of said disc, and an inertial mass connected to said mounting means and acting thereon in a direction urging said transducer into interfacing relation with said disc.
Claim 2
Dependent Claim
79 words
In a magnetic recorder having a rotatable flexible record disc arranged to rotate in a plane and a transducer mounted to interface with a small portion of the disc surface as it revolves; the improvement comprising compliant mounting means supporting said transducer for movement toward and away from the plane of rotation of said disc, and an inertial mass connected to said mounting means and acting thereon in a direction urging said transducer into interfacing relation with said disc.
Claim 3
Dependent Claim
75 words
A magnetic recorder as defined in claim 1, said mounting means including a block movable parallel to a radius of said disc, a slide on said block movable toward and away from said disc, said transducer being supported on said slide, an arm pivoted to said block and acting to move said slide, and a counterweight providing the inertial mass and connected to move said arm in a direction urging said slide toward said disc.
Claim 4
Dependent Claim
110 words
In a magnetic recorder having a rotatable flexible rEcord disc and a transducer mounted to interface with a small portion of the disc surface as it revolves; the improvement comprising mounting means including a block movable parallel to a radius of said disc, support means on said block movable toward and away from said disc, said transducer being carried by said support means, an arm connected to said support means and acting to move said support means relative to said block, a counterweight on said arm acting to move said arm in a direction urging said transducer toward said disc, and means for moving said block relative to said disc.
Claim 5
Dependent Claim
110 words
In a magnetic recorder having a rotatable flexible rEcord disc and a transducer mounted to interface with a small portion of the disc surface as it revolves; the improvement comprising mounting means including a block movable parallel to a radius of said disc, support means on said block movable toward and away from said disc, said transducer being carried by said support means, an arm connected to said support means and acting to move said support means relative to said block, a counterweight on said arm acting to move said arm in a direction urging said transducer toward said disc, and means for moving said block relative to said disc.
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |