Title: Plug-in shaft for electrical control

Abstract: A plug-in shaft is provided for insertion into a noncircular opening provided in a driver and integral hub of a variable resistance control providing a means to alter the rotational torque of the control. Integral with the hub is a dish shaped abuttment section and a driver engagement portion of the shaft supports a plurality of nubbins engaging the abuttment section of the hub upon insertion of the shaft into the noncircular opening to secure the shaft in a predetermined position within the slot. The nubbins engaging the dish shaped abuttment section provide radial pressure on the hub and restrain the axial movement of the shaft within the noncircular opening. An alignment portion of the shaft contiguous with the driver engagement portion rigidly prealigns the shaft in an upright and intact manner within the noncircular opening before the engagement portion and nubbins engage the noncircular opening.

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Inventors: Van Benthuysen, John D. (Elkhart, IN, US)

Application Number: 452126
Filing Date: 1974-03-18
Publication_date: 1976-01-13
Assignee: CTS Corporation (Elkhart, IN)
Primary Class(es): 338/166 338/175
Other Classes:
US Patent Ref:

2257979	Oct, 1941	Rubinstein	338/166.
2669634	Feb, 1954	Daily et al.	338/166.
2717944	Sep, 1955	Daily et al.	338/174.
3032734	May, 1962	Zunker et al.	338/163.
3375478	Mar, 1968	Van Benthuysen	338/174.
3382473	May, 1968	Van Benthuysen et al.	338/166.
3662314	May, 1972	Heredero	338/174.
3837661	Sep, 1974	Phillippi	403/290.

Other Refs: 37,445

Jan, 1956	DT

Primary Examiner: Reynolds, Bruce A.
Assistant Examiner:
Attorney: