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:
Aug. 25, 2009
Filed:
Mar. 05, 2003
Lloyd W. Rogers, Shelby Township, MI (US);
Jeffrey S. Hamminga, Warren, MI (US);
Joseph D. Long, Waterford, MI (US);
Joseph M. Johnson, Huntington Woods, MI (US);
Lloyd W. Rogers, Shelby Township, MI (US);
Jeffrey S. Hamminga, Warren, MI (US);
Joseph D. Long, Waterford, MI (US);
Joseph M. Johnson, Huntington Woods, MI (US);
Strattec Power Access LLC, Glendale, WI (US);
Abstract
A drive unit for a power operated vehicle closure has a track, a guide moveable along the track, a link attached to the guide at one end and adapted to be attached to the vehicle closure at the opposite end, and a motor assembly for moving the guide along the track. The motor assembly has an electric motor and a speed reducer driven by the electric motor that has a first stage and a second stage. The first stage includes a belt drive and the second stage is a spur gear set. Alternatively the first stage is a worm gear and a mating helical gear. The worm gear preferably has a high lead angle and a high number of leads. The speed of the electric motor is reduced to about 1000 rpm or less in the first stage permitting the use of spur gears in the second stage while retaining quiet operation.