Patent US3593330A successfully refreshed from Google Patents.
US3593330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web-like spring support for magnetic transducer
Assignee: Computer Communications Inc
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Filing: 1969-01-27
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Granted: 1971-07-13
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Expires: 1989-01-27
Abstract
Abstract A magnetic transducer which operates in conjunction with a magnetic memory disc is resiliently supported in a pair of weblike springs. The transducer is attached to the springs at the opposite ends thereof for motion along an axis perpendicular to the surface of the magnetic memory disc.
Inventors
- 👤 Donald M Ackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:46
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/16; G11B21/20; G11B5/00; G11B5/48; G11B5/4806; G11B5/4826; G11B5/58
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
153 words
A spring device for resiliently supporting a member for motion along a single axis comprising: first and second flat weblike spring elements, each of said elements including: a central spring section in the form of a flat strip, a second spring section in the form of an endless band surrounding said first section and in concentricity therewith, symmetrically arranged bridge portions joining said second section to said first section, a third spring section in the form of an endless band surrounding said second section and in concentricity therewith, symmetrically arranged bridge portions joining said third section to said second section, and means for supporting said third spring section, said pair of spring elements being positioned with their broad surfaces opposite each other in spaced relationship with said member being connected between the central sections of said elements, the broad surfaces of said spring elements being substantially normal to the single axis of motion.
Claim 2
Dependent Claim
153 words
A spring device for resiliently supporting a member for motion along a single axis comprising: first and second flat weblike spring elements, each of said elements including: a central spring section in the form of a flat strip, a second spring section in the form of an endless band surrounding said first section and in concentricity therewith, symmetrically arranged bridge portions joining said second section to said first section, a third spring section in the form of an endless band surrounding said second section and in concentricity therewith, symmetrically arranged bridge portions joining said third section to said second section, and means for supporting said third spring section, said pair of spring elements being positioned with their broad surfaces opposite each other in spaced relationship with said member being connected between the central sections of said elements, the broad surfaces of said spring elements being substantially normal to the single axis of motion.
Claim 3
Dependent Claim
28 words
The device of claim 1 wherein said means for supporting said third spring section comprises a support frame and bridge portions interconnecting said third section and said frame.
Claim 4
Dependent Claim
46 words
The device of claim 1 wherein the bridge portions joining said second section to said first section lie along a first axis and the bridge portions joining said third spring section to said second spring section lie along a second axis normal to said first axis.
Claim 5
Dependent Claim
40 words
The device of claim 1 wherein said member is a magnetic transducer, one end of said transducer being attached to one of said spring elements, the other end of said transducer being attached to the other of said spring elements.
Claim 6
Dependent Claim
167 words
In a magnetic memory device including a magnetic transducer and a memory disc which is driven past said transducer, the improvement comprising a pair of flat weblike spring elements spaced with their broad surfaces in opposing relationship for resiliently supporting the transducer for motion normal to the surface of the disc, each said spring element including: a central spring section, a second spring section in the form of an endless band surrounding said central section and in concentricity therewith, bridge portions joining said central section to said second section, a third spring section in the form of an endless band surrounding said secoNd section and in concentricity therewith, bridge portions joining said second section to said third section, means for supporting said third section, said transducer being held between the central sections of said pair of elements for motion solely along a single axis substantially normal to the surface of the disc, and means for positioning said transducer in close proximity to the surface of said disc.
Claim 7
Dependent Claim
167 words
In a magnetic memory device including a magnetic transducer and a memory disc which is driven past said transducer, the improvement comprising a pair of flat weblike spring elements spaced with their broad surfaces in opposing relationship for resiliently supporting the transducer for motion normal to the surface of the disc, each said spring element including: a central spring section, a second spring section in the form of an endless band surrounding said central section and in concentricity therewith, bridge portions joining said central section to said second section, a third spring section in the form of an endless band surrounding said secoNd section and in concentricity therewith, bridge portions joining said second section to said third section, means for supporting said third section, said transducer being held between the central sections of said pair of elements for motion solely along a single axis substantially normal to the surface of the disc, and means for positioning said transducer in close proximity to the surface of said disc.
Claim 8
Dependent Claim
28 words
The device of claim 5 wherein said supporting means comprises a holder, a frame attached to said holder and bridge portions interconnecting said frame and said third section.
Claim 9
Dependent Claim
58 words
The device of claim 5 wherein the bridge portions joining said second section to said first section include a pair of bridge portions which lie along a first axis and the bridge portions joining said second section to said third section comprise a pair of bridge portions which lie along a second axis normal to said first axis.
Claim 10
Dependent Claim
11 words
The device of claim 5 wherein said spring sections are oblong.
References Cited (Backward Citations)
US3310792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |