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:
Jan. 16, 1996
Filed:
Apr. 21, 1994
Applicant:
Inventors:
Ronald S Friedman, Commerce Township, MI (US);
William C Sisco, Homer, MI (US);
Assignee:
Simpson Industries, Inc., Bingham Farms, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
1231922 ; 74603 ;
Abstract
A balance shaft for an automobile engine is disclosed. The balance shaft has a hollow tubular body and a pair of end plug members permanently secured thereto, as by welding. Notches or bob weights either in line or 180.degree. out of phase are provided in the two end plug members. The balance shaft is rotated at twice the crankshaft speed in order to balance second order forces.