Pickup arm assembly

Details Pickup arm assembly Pickup arm assembly

1975-08-12

1976-06-15

Canney, Vincent P.

Telegraphy

Systems

Simplex-reversing periodic

274 23R, G11B 302

Patent

active

039638642

ABSTRACT:
A pickup arm has an intermediate portion interconnecting a first end portion and a second end portion. An end of the first end portion is secured to a supporting structure of a disc record player. During playback the first and second end portions are substantially parallel to the turntable surface of the player, and the intermediate portion positions the second end portion near the turntable surface. A signal pickup holder carrying a signal pickup is pivoted to an end of the second end porton remote from the pickup arm supported end in a manner that normally aligns the axes of the holder and the second end portion. During playback the intermediate portion positions the second end portion remote end, carrying the signal pickup holder pivot, as near to a disc record disposed on the turntable surface as practicable, in order to reduce the angle included between (a) the disc record surface, and (b) a line joining the signal pickup tip and the signal pickup holder pivot, thereby reducing deleterious, forward and backward displacement of the signal pickup along the disc record spiral groove as a result of up and down motion of the signal pickup in the spiral groove.

REFERENCES:
patent: 3294404 (1966-12-01), Cavagnaro
patent: 3328036 (1967-07-01), Reed et al.
patent: 3734511 (1971-07-01), Rabinow

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