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:
Jun. 24, 1980
Filed:
Sep. 06, 1978
Roger S Kincel, Whittier, CA (US);
BASF Aktiengesellschaft, Rheinland-Pfalz, DE;
Abstract
An improved technique for the assembly of motors of the type having a printed armature that rotates in a flat, annular air gap between a magnet assembly and a magnetic flux plate, wherein the size of the air gap is accurately maintained at preselected value. In one embodiment of the invention, a precision shim, having a thickness the same as the preselected air gap size, is placed on a flat work surface, the magnet assembly is placed on the shim, and a motor housing is placed over the magnet assembly and shim. An epoxy fill in the housing is compressed as the housing is pressed down over the magnet assembly until a reference surface on the housing contacts the work surface. In an alternate embodiment of the invention, an inner flux plate is formed to include a plurality of tines, so shaped and sized that, when the inner flux plate and the magnet assembly are bonded together and inserted in the housing, the tines provide for a force fit in the housing. The magnet assembly and inner flux plate are pressed into the housing by a press tool with lugs that project from a flat surface of the tool by a distance equal to the preselected size of the air gap.