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:
Apr. 03, 1990
Filed:
May. 22, 1989
Joseph Egger, Pforzheim, DE;
Fritz Brenk, Kampfelbach/Bilfingen, DE;
Timex Corporation, Waterbury, CT (US);
Abstract
Method for manufacturing a timepiece stepping motor comprising the steps of: providing a flat one-piece stator member defining an opening for the rotor and having a pair of diametrically opposed narrow sections on either side of the opening; providing a movement frame having stator locating projections and defining a pair of holes larger than the narrow sections and extending through the movement frame; locating and attaching the stator to the frame with the narrow sections spanning the holes in the frame; cutting through the narrow sections with a laser to sever the stator into two members, utilizing the holes in the frame to dispose of vaporized metal from the stator; encapsulating and re-joining the severed sections with a plastic fixation; and attaching a coil core assembly to the stator members and in magnetic circuit therewith.