US3797035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording media orientation
Assignee: International Business Machines Corp
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Filing: 1971-06-23
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Granted: 1974-03-12
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Expires: 1991-06-23
Abstract
Abstract A recording media having orientation means for defining a recording surface. The recording media is a flat circular disc rotatable about a central opening. The orientation means is adjacent the central opening and is made up of at least one opening. When only one opening is used, it must in general be asymmetrical with respect to any radius extending from the central opening. The central opening in the disc cooperates with a spindle on a recording apparatus turntable. Adjacent the spindle on the turntable is a cooperating orientation member which enters the orientation opening(s) only when the disc is properly positioned in the recording apparatus.
Inventors
- 👤 R Hunt
- 👤 L Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/0282; G11B5/00; G11B5/74; G11B5/82
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
76 words
A recording media comprising: a. a member, rotatable during a recording operation in a recording apparatus, having top and bottom surfaces, one of which comprises a recording surface; and b. orientation means comprising a single opening which is asymmetrical with respect to any radius extending from an axis about which said rotatable member is rotatable, and associated with said recording surface for determining top and bottom orientation of said member with respect to said recording apparatus.
Claim 2
Dependent Claim
76 words
A recording media comprising: a. a member, rotatable during a recording operation in a recording apparatus, having top and bottom surfaces, one of which comprises a recording surface; and b. orientation means comprising a single opening which is asymmetrical with respect to any radius extending from an axis about which said rotatable member is rotatable, and associated with said recording surface for determining top and bottom orientation of said member with respect to said recording apparatus.
Claim 3
Dependent Claim
20 words
A recording media according to claim 1 wherein said orientation means is comprised of an elongated slot in said member.
Claim 4
Dependent Claim
18 words
A recording media according to claim 2 further including a central opening about which said member is rotatable.
Claim 5
Dependent Claim
93 words
In a magnetic recording apparatus in which reading and recording are accomplished, the combination comprising: a. a member, rotatable during said reading and recording, having top and bottom surfaces, one of which comprises a recording surface; b. orientation means comprising a single opening which is asymmetrical with respect to any radius extending from an axis about which said rotatable member is rotatable, and associated with said recording surface; and c. an orientation member for cooperating with said orientation means when said rotatable member is properly top and bottom oriented in said recording apparatus.
Claim 6
Dependent Claim
93 words
In a magnetic recording apparatus in which reading and recording are accomplished, the combination comprising: a. a member, rotatable during said reading and recording, having top and bottom surfaces, one of which comprises a recording surface; b. orientation means comprising a single opening which is asymmetrical with respect to any radius extending from an axis about which said rotatable member is rotatable, and associated with said recording surface; and c. an orientation member for cooperating with said orientation means when said rotatable member is properly top and bottom oriented in said recording apparatus.
Claim 7
Dependent Claim
20 words
The combination according to claim 4 wherein said orientation means is comprised of an elongated slot in said rotatable member.
Claim 8
Dependent Claim
22 words
The combination according to claim 5 further including a central opening in said rotatable member about which said rotatable member is rotatable.
Claim 9
Dependent Claim
17 words
The combination according to claim 6 wherein said orientation member is positioned on a rotatable turntable mechanism.
Claim 10
Dependent Claim
23 words
The combination according to claim 7 whereIn said turntable mechanism comprises a bed portion having a spindle for cooperating with said central opening.
Claim 11
Dependent Claim
101 words
A magnetic recording media comprising: a. a flat circular disc, rotatable about a central circular opening during a recording operation in a recording apparatus, having top and bottom surfaces, one of which comprises a recording surface made up of a magnetic oxide coating on said disc; and b. an elongated orientation slot adjacent said circular opening and positioned at about 45* to a radius extending from said circular opening, and associated with said recording surface for 1) determining top and bottom orientation of said disc with respect to said recording apparatus, and 2) rotating a turntable means in said recording apparatus.
Claim 12
Dependent Claim
101 words
A magnetic recording media comprising: a. a flat circular disc, rotatable about a central circular opening during a recording operation in a recording apparatus, having top and bottom surfaces, one of which comprises a recording surface made up of a magnetic oxide coating on said disc; and b. an elongated orientation slot adjacent said circular opening and positioned at about 45* to a radius extending from said circular opening, and associated with said recording surface for 1) determining top and bottom orientation of said disc with respect to said recording apparatus, and 2) rotating a turntable means in said recording apparatus.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |