The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 1985
Filed:
Oct. 28, 1983
Keith C Bryant-Jeffries, Eastleigh, GB;
Hugh G Dickie, Eastleigh, GB;
Eric V Vaughan, Eastleigh, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of making a rotor, for a dynamo-electric machine, which has a number of arcuately formed rectangular loop coils arranged edgewise in a cylindrical configuration, employs injection moulding. Moulding material is injected between adjacent coils and penetrates between and around them to form an encapsulating framework. Entry of moulding material into the central apertures of the coils is prevented by inserts. By directing the moulding material inwardly, and spacing the coils slightly from the mould core, encapsulant also penetrates behind the coil faces to form a thin skin. By use of a shutter member, which may be an integral end cap, coil terminations can be led out of the mould cavity through apertures in the shutter to protect them from damage during the moulding process.