Video disc stylus retractor

Details Video disc stylus retractor Video disc stylus retractor

1979-10-03

1981-03-17

Stephan, Steven L.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Mechanical modification or sensing of storage medium

369245, G11B 310

Patent

active

042563119

ABSTRACT:
A mechanism for retracting a stylus from engagement with the surface of a video disc record. A lever arm arranged parallel to the stylus arm and normally biased to a first position has a filament attached to a free end thereof, the filament being normally disposed to straddle and engage the stylus carrying arm proximate to the stylus to lift and hold the stylus from the record surface. A force which is selectively imparted to the lever arm pivots the lever arm to a second position permitting disengagement of the filament and stylus arm permitting the stylus to engage the record.

REFERENCES:
patent: 2547441 (1951-04-01), Cornwell
patent: 3661397 (1972-05-01), Worth
patent: 3711641 (1973-01-01), Palmer
patent: 3952145 (1976-04-01), Allen
patent: 3952147 (1976-04-01), Leedom
patent: 3956581 (1976-05-01), Taylor
patent: 3972533 (1976-08-01), Huff
patent: 4030124 (1977-06-01), Allen
patent: 4049280 (1977-09-01), Leedom
patent: 4053161 (1977-10-01), Bleazey
patent: 4059277 (1977-11-01), DeStephanis

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