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 Title: |
US3833408:
VIDEO DISCS HAVING A METHYL ALKYL SILICONE COATING
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Matthies, Dennis Lee; Princeton, NJ
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| Assignee: |
RCA Corporation, New York, NY
other patents from RCA CORPORATION (466175) (approx. 7,929)
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| Published / Filed: |
1974-09-03
/ 1972-04-19
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| Application Number: |
US1972000245663
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| IPC Code: |
Advanced:
B05D 7/04;
G11B 3/58;
G11B 3/70;
G11B 3/72;
G11B 5/72;
G11B 7/24;
G11B 9/06;
G11B 11/00;
G11B 23/50;
H04N 5/76;
Core:
G11B 3/00;
G11B 9/00;
more...
IPC-7:
G11B 5/00;
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| U.S. Class: |
Current:
369/276;
369/283;
369/288;
386/E05.068;
428/064.2;
428/447;
508/208;
G9B/003.106;
G9B/023.098;
Original:
117/217;
117/218;
117/071.R;
117/072;
117/138.8R;
117/138.8A;
117/161.ZA;
117/169.A;
179/100.2A;
252/027;
252/028;
252/049.6;
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| Field of Search: |
117/217,169 A,161 ZA,218,71 R,72,138.8 R,138.8 A
252/027,28,49.6
179/100.2 A
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| Priority Number: |
| 1972-04-19 |
US1972000245663 |
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| Abstract: |
Application of certain methyl alkyl siloxane compounds to the surface of video disc replicas reduces surface friction generated during playback with no sacrifice in video quality.
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| Attorney, Agent or Firm: |
Bruestle, Glenn H. ;
Morris, Birgit E. ;
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| Primary / Asst. Examiners: |
Van Horn, Charles E.; Frisenda, Jr., Frank
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Family: |
Show 17 known family members
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First Claim:
Show all 5 claims |
1. Information storage means adapted to provide capacitance variations to a pickup means, said storage means comprising a conductive storage medium in which information is recorded in the form of geometric variations on a conductive surface thereof, a dielectric coating disposed over said conductive surface and a thin coating of uniform thickness of a methyl alkyl silicone of the formula [Figure]
wherein R is an alkyl group and x is an integer, disposed over said
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
Show drawing descriptions
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| Description: |
Show description
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| Forward References: |
Show 27 U.S. patent(s) that reference this one
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