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Primary Examiner: Askin, Laramie E.
Assistant Examiner:
Attorney: Fogiel; Max

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Title: Trimming potentiometer in T or Pi network connection with parallel resistance paths

Abstract: A trimming potentiometer in which three parallel resistance paths are located in a plane on an insulating plate. Wiper contacts are displaceable in the same direction on the resistance paths, and are attached to a common carrier which is longitudinally displaceable by a threaded spindle. Inductance loops are arranged between the resistance paths and the respective terminals for the paths, for the purpose of matching the trimming potentiometer to its inductance and capacitive input and output values.

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Other info:

Inventors: Koerner, Georg (Hohenkirchen, DT)
Hargita, Tibor (Munich, DT)

Application Number: 493079
Filing Date: 1974-07-30
Publication_date: 1976-02-10
Assignee: Wilhelm Ruf KG (Hohenkirchen, DT)
Primary Class(es): 338/60 333/81R, 338/61, 338/126, 338/180, 338/202
Other Classes:
US Patent Ref:

2131101	Sep, 1938	Ferris	333/81.
2831094	Apr, 1958	Bourns et al.	338/125.
3371305	Feb, 1968	DeLong et al.	338/202.
3576513	Apr, 1971	Mathison et al.	338/180.
3597719	Aug, 1971	Martin et al.	338/180.
3639879	Feb, 1972	Rooijen	338/180.
3693062	Sep, 1972	VonVick	338/92.
3735326	May, 1973	Gooding et al.	338/180.

Other Refs: 1,540,339

Nov, 1972	DT

Other References: German Utility Model (Gebrauchsmuster) No. 1,957,345, 3-1967.