Title: Record tracking pickup structure for a capacitive disc

Abstract: A pickup structure for tracking records includes a stylus formed of a section from a diamond crystal. That section has the cross sectional configuration of a square and, when employed as a capacitive pick up, has a conductive coating on one face. Any of the four corners may be employed as a tracking stylus.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Knitter, Roger W. (Hoffman Estates, IL, US)

Application Number: 475737
Filing Date: 1974-06-03
Publication_date: 1976-03-09
Assignee: Zenith Radio Corporation (Chicago, IL)
Primary Class(es): 369/126 369/140, 369/171
Other Classes:
US Patent Ref:

2699470	Jan, 1955	Koren	179/100.
2992007	Jul, 1961	Bondley	274/38.
3781020	Dec, 1973	Batsch et al.	274/38.
3826877	Oct, 1974	Leedom	179/100.
3848876	Nov, 1974	Joschko et al.	274/38.

Other Refs:
Primary Examiner: Konick, Bernard
Assistant Examiner: Faber, Alan
Attorney: O'Connor; Cornelius J.