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. 23, 1997
Filed:
Feb. 06, 1996
Karl Derflinger, Laakirchen, AT;
Herbert Schmid, Vorchdorf, AT;
Johann Dickinger, Bad Wimsbach/N., AT;
Miba Sintermetall Aktiengesellschaft, Laakirchen, AT;
Abstract
A method of producing a sliding sleeve for a synchronizer of a speed-changing gear, the sliding sleeve being comprised of a sintered powder metal compact having a claw extending along an inner periphery of the sleeve, and the claw consisting of teeth having opposite end faces and a cross-section between the end faces which is reduced relative to an undercut portion at at least one of the end faces, which method comprises the steps of sintering the powder metal compact having the claw consisting of the teeth having the opposite end faces and the reduced cross-section extending between the end faces, and then applying solely an axial upsetting force to the one end face to form the undercut portion thereat while leaving the reduced cross-section unchanged.