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. 23, 1991
Filed:
Mar. 12, 1990
Applicant:
Inventor:
Dennis P Zulawski, St. Hilaire, MN (US);
Assignee:
Arctco, Inc., Thief River Falls, MN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62M / ;
U.S. Cl.
CPC ...
180190 ; 180182 ; 280 221 ;
Abstract
A suspension/traction unit for a snowmobile is disclosed as having an area of primary support and a two stage angle of attack. The traction unit includes a drive sprocket rotatably mounted to the snowmobile chassis a predetermined height above ground level when the snowmobile is at rest. An endless belt is guided by slide rails such that a low primary angle of attack of about 6 degrees is presented as well as a secondary angle of attack steeper than the primary angle attack making it possible for the snowmobile to effectively start and move in deep snow.