US3587074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic disc assembly with annular flange
Assignee: Singer General Precision Inc
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Filing: 1969-09-29
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Granted: 1971-06-22
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Expires: 1989-09-29
Abstract
Abstract A rotating disc memory assembly is provided for electronic digital computers, data processors and the like, which is simple and inexpensive to construct, which requires a minimum number of parts, and yet which provides for a precisely determined spacing between the inner ends of the electromagnetic transducer heads carried by the housing of the assembly and the surface of the rotating memory disc. The assembly to be described includes a rotating hub, which is precisely positioned with respect to the inner surface of the housing mounting plate for the aforesaid heads, and a wedge-shaped annular C-clamp which holds the disc memory firmly against a peripheral shoulder of the hub in an accurately spaced relationship with respect to the inner ends of the heads mounted in the aforesaid mounting plate.
Inventors
- 👤 Arthur M Angle
- 👤 Reinhard Hurlimann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:20
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/0014; G11B23/0021; G11B23/0028; G11B23/0035; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/32
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
151 words
A disc memory assembly for a digital computer, data processor, data storage system, or the like, including: a housing having a mounting plate for electromagnetic transducer heads; hub means rotatably mounted within said housing for rotation about a particular axis and spaced a precisely predetermined distance from the inner surface of said mounting plate, said hub means including an annular flange extending around the periphery thereof; drive means for said hub means; an annular shaped magnetic disc mounted on said hub in concentric relationship therewith for rotation with said hub about said axis; and means on said hub for holding said magnetic disc securely thereon and against said flange in firm engagement with said flange, in which said hub means has a slot extending around the periphery thereof in axially spaced relationship with said flange, and in which said holding means comprises a wedge-shaped resilient metallic Cring extending into said slot.
Claim 2
Dependent Claim
151 words
A disc memory assembly for a digital computer, data processor, data storage system, or the like, including: a housing having a mounting plate for electromagnetic transducer heads; hub means rotatably mounted within said housing for rotation about a particular axis and spaced a precisely predetermined distance from the inner surface of said mounting plate, said hub means including an annular flange extending around the periphery thereof; drive means for said hub means; an annular shaped magnetic disc mounted on said hub in concentric relationship therewith for rotation with said hub about said axis; and means on said hub for holding said magnetic disc securely thereon and against said flange in firm engagement with said flange, in which said hub means has a slot extending around the periphery thereof in axially spaced relationship with said flange, and in which said holding means comprises a wedge-shaped resilient metallic Cring extending into said slot.
Claim 3
Dependent Claim
170 words
A disc memory assembly for a digital computer, data processor, data storage system, or the like, including: a housing having a mounting plate for electromagnetic transducer heads; hub means rotatably mounted within said housing for rotation about a particular axis and spaced a precisely predetermined distance from the inner surface of said mounting plate, said hub means including an annular flange extending around the periphery thereof; drive means for said hub means; an annular shaped magnetic disc mounted on said hub in concentric relationship therewith for rotation with said hub about said axis; means on said hub for holding said magnetic disc securely thereon and against said flange in firm engagement with said flange, said holding means comprising an annular resilient member; means including an annular clamp mounted on said hub for holding said resilient member firmly against said disc; and a second annular-shaped magnetic disc interposed between said clamp and said resilient member and supported thereby in axially spaced coaxial relationship with said first named disc on said hub.
Claim 4
Dependent Claim
170 words
A disc memory assembly for a digital computer, data processor, data storage system, or the like, including: a housing having a mounting plate for electromagnetic transducer heads; hub means rotatably mounted within said housing for rotation about a particular axis and spaced a precisely predetermined distance from the inner surface of said mounting plate, said hub means including an annular flange extending around the periphery thereof; drive means for said hub means; an annular shaped magnetic disc mounted on said hub in concentric relationship therewith for rotation with said hub about said axis; means on said hub for holding said magnetic disc securely thereon and against said flange in firm engagement with said flange, said holding means comprising an annular resilient member; means including an annular clamp mounted on said hub for holding said resilient member firmly against said disc; and a second annular-shaped magnetic disc interposed between said clamp and said resilient member and supported thereby in axially spaced coaxial relationship with said first named disc on said hub.
Claim 5
Dependent Claim
197 words
A disc memory assembly for a digital computer, data processor, data storage system, or the like, including: a housing having a mounting plate for electromagnetic transducer heads; hub means rotatably mounted within said housing for rotation about a particular axis and spaced a precisely predetermined distance from the inner surface of said mounting plate, said hub means including an annular flange extending around the periphery thereof; drive means for said hub means comprising an electric motor having a drive shaft extending along said axis; means for mounting said hub on the end of said drive shaft; an annular shaped magnetic disc mounted on said hub in concentric relationship therewith for rotation with said hub about said axis; means on said hub for holding said magnetic disc securely thereon and against said flange in firm engagement with said flange, and which includes bearing means interposed between said drive shaft and said housing, said hub having a peripheral shoulder engaging one end of said bearing means, and said drive shaft having a peripheral shoulder engaging the oTher end of said bearing means, so as to position said hub precisely with respect to the inner surfaces of said mounting plate.
Claim 6
Dependent Claim
197 words
A disc memory assembly for a digital computer, data processor, data storage system, or the like, including: a housing having a mounting plate for electromagnetic transducer heads; hub means rotatably mounted within said housing for rotation about a particular axis and spaced a precisely predetermined distance from the inner surface of said mounting plate, said hub means including an annular flange extending around the periphery thereof; drive means for said hub means comprising an electric motor having a drive shaft extending along said axis; means for mounting said hub on the end of said drive shaft; an annular shaped magnetic disc mounted on said hub in concentric relationship therewith for rotation with said hub about said axis; means on said hub for holding said magnetic disc securely thereon and against said flange in firm engagement with said flange, and which includes bearing means interposed between said drive shaft and said housing, said hub having a peripheral shoulder engaging one end of said bearing means, and said drive shaft having a peripheral shoulder engaging the oTher end of said bearing means, so as to position said hub precisely with respect to the inner surfaces of said mounting plate.
Claim 7
Dependent Claim
84 words
The combination defined in claim 3, in which said housing includes a first annular channel therein adjacent one end of said bearing means, and a wedge-shaped second annular channel therein adjacent the other end of said bearing means, and which includes a resilient metallic annular C-clamp extending into said first annular channel and engaging said one end of said bearing means, and a resilient metallic wedge-shaped annular C-clamp extending into said wedge-shaped second annular channel and engaging the other end of said bearing means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |