Patent US4261024A successfully refreshed from Google Patents.
US4261024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer platform
Assignee: Compagnie Internationale pour l'Informatique CII-Honeywell Bull SA
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Filing: 1979-05-10
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Granted: 1981-04-07
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Expires: 1999-05-10
Abstract
Abstract A platform for supporting at least one magnetic transducer for reading from and/or recording on a data carrier. The platform is supported from a carrier arm adapted to position the platform over the data carrier which may be a multi-track disc. The magnetic transducer is supported in the lower face of the main body of the platform. The lower face includes a plurality of skids and one or more grooves which receive a rigid strut for suspending the platform over the carrier. The strut is secured in the groove (s) with the plane of the strut passing through the centers of gravity of the platform. The strut may be secured to a frame surrounding the platform which in turn may be secured to a further concentric frame also surrounding the platform.
Inventors
- 👤 Jacques Desserre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:16
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/16; G11B21/20; G11B5/00; G11B5/48; G11B5/58; G11B5/60
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
A platform adapted to be supported by a carrier arm for positioning the platform adjacent a moving data carrier, the platform and moving data carrier having air bearing spacing therebetween, comprising a main body having a lower face and an upper face, at least one transducer for reading and/or recording on the data carrier, said transducer being supported on the lower face of the main body and arranged to face the data carriers and suspension means for carrying said platform, said suspension means being connected to said lower face of the main body, and said lower face includes a plurality of longitudinal rails, at least one bleed slot disposed between said longitudinal rails and said suspension means being fixed in said bleed slot.
Claim 2
Dependent Claim
123 words
A platform adapted to be supported by a carrier arm for positioning the platform adjacent a moving data carrier, the platform and moving data carrier having air bearing spacing therebetween, comprising a main body having a lower face and an upper face, at least one transducer for reading and/or recording on the data carrier, said transducer being supported on the lower face of the main body and arranged to face the data carriers and suspension means for carrying said platform, said suspension means being connected to said lower face of the main body, and said lower face includes a plurality of longitudinal rails, at least one bleed slot disposed between said longitudinal rails and said suspension means being fixed in said bleed slot.
Claim 3
Dependent Claim
23 words
A platform according to claim 1, wherein each of the longitudinal rails includes a transducer for reading and/or recording on the data carrier.
Claim 4
Dependent Claim
90 words
A platform according to claim 1 or 2, wherein the main body of said platform is of the cataraman type including two longitudinal rails and a bleed slot therebetween formed in the lower face, said suspension means comprising a first rigid strut and a second rigid strut, the first rigid strut having one end fixed in the said bleed slot and the other end is fixed to one end of the second rigid strut, the other end of the second rigid strut adapted to be secured to the carrier arm.
Claim 5
Dependent Claim
26 words
A platform according to claim 3, wherein the said first strut is disposed in a plane which passes through the center of gravity of the platform.
Claim 6
Dependent Claim
77 words
A platform according to claim 1 or 2, wherein said platform is of the trimaran type including three longitudinal rails and two bleed slots, formed in the lower face, said suspension means comprising identical first and second rigid parts each of which has a first end fixed in one of the two bleed slots and a second end both fixed to a third rigid strut, said third rigid strut adapted to be secured to the carrier arm.
Claim 7
Dependent Claim
30 words
A platform according to claim 5, wherein the first and second struts are situated in the same plane, the said plane passing through the center of gravity of the platform.
Claim 8
Dependent Claim
83 words
A platform according to claim 1, wherein said platform is of the trimaran type including three longitudinal rails and two bleed slots formed in the lower face, said suspension means comprising identical first and second rigid struts each of which have a first end fixed in one of the two bleed slots and their second ends both fixed to a first rigid frame, a second rigid frame connected to said first frame, said second frame adapted to be secured to the carrier arm.
Claim 9
Dependent Claim
28 words
A platform according to claim 7, wherein the first and second struts are situated in the plane, said plane passing through the center of gravity of the platform.
Claim 10
Dependent Claim
26 words
A platform according to claims 7 or 8, wherein said second frame is larger than said first frame and said first and second frames are concentric.
Claim 11
Dependent Claim
18 words
A platform according to claim 9, wherein said first and second frames are disposed in a common plane.
Claim 12
Dependent Claim
19 words
A platform according to claim 10, wherein said common plane passes through the center of gravity of the platform.
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) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |