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 Title: |
US3837656:
CHIP REMOVAL IN THE MASTERING OF FINE-GROOVED DISCS
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Pradervand, Michel; Chene-Bougeries, Geneva, Switzerland
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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: |
1974-09-24
/ 1973-03-12
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| Application Number: |
US1973000340606
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| IPC Code: |
Advanced:
B23Q 11/00;
G11B 3/02;
G11B 3/58;
G11B 33/02;
Core:
G11B 3/00;
more...
IPC-7:
G11B 3/58;
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| U.S. Class: |
Current:
369/072;
369/154;
Original:
274/046.B;
274/047;
179/100.4C;
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| Field of Search: |
274/047,46 R,46 B
179/100.4 C
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| Priority Number: |
| 1972-04-19 |
GB1972000018153 |
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| Abstract: |
A system for removing chips cut away from a video disc master utilizes a stream of tempered air to direct the chips towards a vacuum orifice which in turn carries these chips off the disc.
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| Attorney, Agent or Firm: |
Whitacre, Eugene M. ;
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| Primary / Asst. Examiners: |
Prince, Louis R.; Phillips, Charles E.
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Family: |
Show 8 known family members
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First Claim:
Show all 9 claims |
What is claimed is:
1. Apparatus for cutting a groove in an information-storing disc comprising:
- a turntable adapted for rotationally carrying an information-storing disc;
- means for cutting a spiral depression in the disc;
- a fluid outlet adjacent said cutting means;
- means for supplying fluid via said outlet to impinge upon the disc and cutting means at the contact area thereof;
- a first heating means coupled to said means for supplying fluid for heating said fluid;
- a second heating means coupled to said cutting means for elevating the temperature of said cutting means in accordance with the melting temperature of the material in which said spiral groove is cut; and
- collecting means disposed adjacent said cutting means aligned with said outlet and adapted for accumulating and removing portions of the disc material removed by said cutting means and directed by said fluid towards said collecting means.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 5 U.S. patent(s) that reference this one
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