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:
Apr. 24, 2001
Filed:
Sep. 21, 1999
Robert J. Pavlin, Grand Haven, MI (US);
Todd K. Watkins, Ravenna, MI (US);
Gary T. Wehnes, Muskegon, MI (US);
Curt A. Converse, N. Muskegon, MI (US);
James E. Adams, Muskegon, MI (US);
Precision Products Group, Muskegon, MI (US);
Abstract
A multiple torsion spring assembly according to the present invention may be provided with a coiled helical torsion spring. The spring has first and second end coils, and a plurality of intermediate coils between the first and second end coils. The first end coil inner diameter is less than the inner diameter of the intermediate coils. The second end coil inner diameter is less than the inner diameter of the first end coil. The spring may be used to control a throttle return of a throttle body. Methods of manufacturing spring assemblies are also disclosed.