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. 20, 2007
Filed:
Jun. 29, 2005
Michael G. Morin, Keene, NH (US);
Michael G. Morin, Keene, NH (US);
Sonnax Industries, Inc., Bellews Falls, VT (US);
Abstract
A heavy-duty replacement torque converter cover for an automatic transmission designed to withstand the mechanical stresses generated during the torque converter lock-up cycle and other peak torque events in diesel engine pick-up trucks is disclosed. The present cover includes an internal spline that achieves up to a 70% increase in spline tooth engagement with a mating friction plate in the lock-up clutch in comparison to the original equipment cover providing increased torque capacity to the lock-up clutch. This is accomplished by machining a true internal spline within the cover on gear shaping equipment instead of utilizing the so-called Grob cold forming method, which provides only a simulated internal spline comprised of interlocking embossments having substantially less torque capacity than the present internal spline. The present cover also provides a thicker lock-up clutch surface, increased structural support for stud weldments, reduced stress cracking, improved heat dissipation, and increased service longevity.