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:
May. 30, 1989
Filed:
May. 19, 1987
Gary R Hill, Mt. Clemens, MI (US);
Micromatic Textron Inc., Holland, MI (US);
Abstract
In pressure forming splines or teeth in the sleeve of a clutch hub and the like, a rotatable toothed mandrel and a pair of sliding toothed racks are offset relative to one another such that when the sleeve of the clutch hub blank is placed on the mandrel, a ring-shaped lip portion of the sleeve adjacent the open sleeve end is not intermeshed between the mandrel teeth and rack teeth and thus is not splined and such that a transition region between the cylindrical oil seal surface and the sleeve is splined. The clutch hub thus includes splines on the sleeve terminating short of the open sleeve end in an unsplined ring-shaped lip portion and extending at the other end contiguous with splines formed in the transition region between the oil seal surface and sleeve. A clutch hub can thereby be manufactured having, in combination, a longitudinal tooth taper (bellmouth) within required close tolerances, e.g., within 0.010 inch, preferably within 0.005 inch, and an oil seal surface with roundness within required close tolerances, e.g., within 0.005 inch.