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:
Sep. 29, 2009
Filed:
Aug. 15, 2008
Mike M. Ghiran, Lake Orion, MI (US);
Spyros P. Mellas, Waterford, MI (US);
William M. Crantas, Highland, MI (US);
Kevin R. Marks, Durand, MI (US);
Douglas T. Wohlenhaus, Flushing, MI (US);
Mike M. Ghiran, Lake Orion, MI (US);
Spyros P. Mellas, Waterford, MI (US);
William M. Crantas, Highland, MI (US);
Kevin R. Marks, Durand, MI (US);
Douglas T. Wohlenhaus, Flushing, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
In a rotary tube bender, a first set of pressure sensors is located between the normally disposed mating surfaces of a wiper die insert and its wiper die holder; and a second set of pressure sensors is located between the axially disposed surfaces of the wiper die insert and the wiper die holder. Signal outputs of the first and second sets of pressure sensors over the course of bending cycles are compared to previously determined nominal signal outputs for drift indicative of whether a realignment or replacement of the wiper die should be performed.