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:
May. 19, 1992
Filed:
May. 23, 1990
Thomas R Holden, Le Center, MN (US);
Other;
Abstract
A snow travel vehicle for movement through deep snow which is characterized by a two-part articulated chassis, independent beam suspension for tracks on opposite sides of each of the chassis parts and a hydraulic drive system for the vehicle. The two parts of the articulated chassis are pivotally connected about a vertical axis for limited relative movement for steering and about a horizontal axis for limited relative movement to accommodate ground irregularities. Each track includes a longitudinal 'walking' beam pivotally connected at the end of a transverse crossbeam. A cleated tread is tautly supported by a plurality of in-line wheels, one of those wheels being a drive sprocket supported by the 'walking' beam. A direct drive hydraulic motor is connected to the drive sprocket. A hydraulic power system is provided connected to each of the hydraulic motors and an internal combustion power system is provided to energize the hydraulic power system.