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US 4,337,537 AGranted
Tonearm position setting device
AssigneePioneer Electronic Corporation
InventorYoshihisa Hirota
Life of this patent
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Abstract
A record turntable tonearm positioning system having an engagement mechanism to limit movement of the tonearm and a control system to determine tonearm position. A drive system responsive to a predetermined signal drives the engaging mechanism and a detector measures tonearm position. The control system generates the predetermined signal in response to detector output to control the drive system.
Claims3
A tonearm lowering position setting device for a record turntable comprising:
- a moving means carrying a tonearm for horizontal movement;
- engaging means for engaging said moving means at a desired lowering position of said tonearm to thereby stop the horizontal movement of said tonearm;
- driving means for driving said engaging means so as to be in an engaging condition with said moving means in response to a predetermined signal;
- detecting means for detecting when said tonearm is positioned in the vicinity of the desired lowering position;
- and
- a control means for supplying said predetermined signal to said driving means in response to the output of said detecting means.
3 more elements
Dependencies are inferred from the claim text.