Dynamic information storage or retrieval – With particular cabinet structure – With mechanism to place disc on a turntable
Patent
1988-01-07
1989-02-28
Stephan, Steven L.
Dynamic information storage or retrieval
With particular cabinet structure
With mechanism to place disc on a turntable
318136, 369 771, G11B 17035
Patent
active
048092541
ABSTRACT:
It is conventional in relation to automatic retraction mechanisms to position a switch that advances a slide-out compartment in and out either on the front surface of the compartment or behind it at a fixed point inside the device where it can be activated by the compartment, which the operator applies pressure over a short distance to for that purpose. The object of the invention is accordingly to provide a reliable, cost-effective, and user-friendly solution.
This object is attained with absolutely already existing components in that the retraction mechanism travels a short distance when pressed, accordingly rotating the rotor component of the motor (1) through the intermediary of the drive mechanism, a rack (3) and pinion (2) and if necessary a belt (4) for example, and causing it to generate electromagnetic force. The resulting pulse is processed in the form of a signal by a simple processing circuit (17) and supplied in the form of a switching command to controls, usually a microcomputer (18). The microcomputer turns on the motor voltage for a specific time and at a specific polarity.
REFERENCES:
patent: 2478346 (1949-08-01), Van Doorn
patent: 4697259 (1987-09-01), Takanashi
patent: 4723185 (1988-02-01), Maeda
patent: 4730296 (1988-03-01), Urata et al.
Deutsche Thomson-Brandt GmbH
Fogiel Max
Stephan Steven L.
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