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:
Jul. 17, 2012
Filed:
Jul. 13, 2008
Mike M. Ghiran, Lake Orion, MI (US);
Spyros P. Mellas, Waterford, MI (US);
David H. Shea, Lake Orion, MI (US);
Thomas W. Mcclure, Brookfield, WI (US);
Darrell W Rebman, Kimball Township, MI (US);
Mike M. Ghiran, Lake Orion, MI (US);
Spyros P. Mellas, Waterford, MI (US);
David H. Shea, Lake Orion, MI (US);
Thomas W. McClure, Brookfield, WI (US);
Darrell W Rebman, Kimball Township, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A tool adapted to form and method of forming a tapped hole within a workpiece in a single pass, includes a piercing section operable to punch a pilot hole in and produce a slug attached to the workpiece, and a tapping section operable to form a female thread along the periphery of the hole, and more preferably, an extruding section operable to push workpiece material away from the exterior surface defined thereby, an expanding section operable to expand the diameter of the hole, a sealing section operable to seal the hole during a hydroforming process, and a burnishing section operable to further expand and treat the periphery of the hole prior to tapping.