Dynamic information storage or retrieval – With particular cabinet structure – With closure-operated interlock or braking actuator
Patent
1981-08-26
1983-10-25
Stephan, Steven L.
Dynamic information storage or retrieval
With particular cabinet structure
With closure-operated interlock or braking actuator
70279, 292201, G11B 100, E05B 4700, E05C 306
Patent
active
044123205
ABSTRACT:
A releasable cover locking device associated with a cover of a record player of the type in which a record disk is rotated during a reproduction operation when power is supplied to the record player, includes a locking mechanism having a locking lever biased about a shaft to a locking position to lock the cover into a closed position; a first release mechanism including a release link rotatably mounted on the shaft for biasing the locking lever to an unlocked position, a reciprocable rod connected to the release link and an electromagnetic plunger for actuating the reciprocable rod when power is supplied to the apparatus and when the rotational speed of the record disk falls below a predetermined value wherein the release link biases the locking lever to the unlocked position; and a second release mechanism including an arm rotatably mounted on the shaft for biasing the locking lever to the unlocked position, a stop lever connected to the arm through an operating link, a positioning mechanism for positioning the arm into opposing relation to the locking lever when the power supplied to the record player is interrupted so that the stop lever can be actuated to cause the arm to bias the locking lever to the unlocked position and to position the arm out of the opposing relation when power is supplied to the record player so that the arm cannot bias the locking lever to the unlocked position.
REFERENCES:
patent: 3940148 (1976-02-01), Torrington et al.
patent: 4135721 (1979-01-01), Camerik
Eslinger Lewis H.
Sinderbrand Alvin
Sony Corporation
Stephan Steven L.
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