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:
Dec. 05, 1995
Filed:
May. 17, 1994
Asmo Co., Ltd., , JP;
Abstract
A method for manufacturing a stator for an ultrasonic motor, wherein the stator includes a circular land portion, a plurality of teeth secured to the land portion by a plurality of radial slits, the method comprising the steps of: compressing fine metal particle to form a pre-compression body having a predetermined shape, whereby said pre-compression body is provided with a plurality of projections for forming a plurality of teeth of the stator; baking said pre-compression body, for producing a sintered body; applying a densification process on the teeth of said sintered body produced in said baking step, whereby each of said teeth is provided with a high dense portion having a density ratio of at least 90%; and applying a sizing process to said sintered body produced in said baking step.