Title: Method of manufacturing a solenoid

Abstract: There is disclosed a solenoid of improved construction and a facile method for its manufacture. The solenoid is intended for use with cyclic voltage supplies and has a fixed-position pole assembly of a pole piece, shading ring and flux ring which is secured in a retaining sleeve. The pole piece has an annular groove which receives an inward, annular bead of the sleeve to retain the assembly. The sleeve is mounted within a solenoid casing within an annular coil and the casing is closed by an end closure plate which bears against the end of the sleeve. The inward annular offset of the sleeve provides a resilient axial compressability of the sleeve permitting facile assembly to precise tolerances.

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Inventors: Katchka, Jay R. (Cypress, CA, US)
Kelly, Samuel T. (Torrance, CA, US)

Application Number: 951598
Filing Date: 1978-10-16
Publication_date: 1980-05-06
Assignee: Robertshaw Controls Company (Richmond, VA)
Primary Class(es): 29/602.1 29/525, 29/760
Other Classes:
US Patent Ref:

3134932	May, 1964	Ray	335/251.
3378732	Apr, 1968	Dietz et al.	335/251.

Other Refs:
Primary Examiner: Hall, Carl E.
Assistant Examiner:
Attorney: Fulwider, Patton, Rieber, Lee & Utecht