Dynamic information storage or retrieval – With particular cabinet structure – Slotted for edgewise insertion of storage disc
Patent
1981-04-09
1982-11-09
Stephan, Steven L.
Dynamic information storage or retrieval
With particular cabinet structure
Slotted for edgewise insertion of storage disc
369170, 369256, G11B 358, G11B 310
Patent
active
043588417
ABSTRACT:
The video disc player includes a selectively-actuated stylus arm lifter. When the player is in the PLAY mode, a forward bias is applied to the lifter electromagnet to cause it to lower the stylus on the record. When the player is disposed in the record LOAD/UNLOAD mode, the lifter is reverse biased to prevent the stylus from being lowered and coming in contact with moving parts during the record load/unload operations.
REFERENCES:
patent: 3952147 (1976-04-01), Leedom
patent: 4049280 (1977-09-01), Leedom
patent: 4256311 (1981-03-01), Allen et al.
patent: 4285524 (1981-08-01), Hughes et al.
Baker Alfred L.
Carroll Charles B.
Kulkarni D. A.
RCA Corporation
Stephan Steven L.
Tripoli J. S.
Whitacre E. M.
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