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. 22, 1977
Filed:
May. 04, 1976
John Saxon Ivey, Bloomfield Hills, MI (US);
Kenneth Albert Braybrook, Letchworth, EN;
Borg-Warner Corporation, Chicago, IL (US);
Abstract
A method of manufacturing a hydraulic torque converter impeller member and the product of such manufacture in which a hardened steel cylindrical bearing is assembled to a drawn hub portion of a generally annular sheet metal part to comprise a torque converter impeller comprising the steps of (1) semidrawing the part to include a partly drawn hub portion, (2) placing a hardened cylindrical bearing in a die mechanism, (3) assembling the generally annular part into the die mechanism with the hub portion engaged in the cylindrical bearing (4) drawing and extruding the hub by moving an object the size of the desired finished inside diameter of the hub through same whereby the hub is formed and forced against the bearing member with sufficient force to make a permanent connection between the hub and bearing, and (5) trimming the excess material from the outer end of the hub portion to conform same to the dimensions of the cylindrical bearing.