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. 28, 2019
Filed:
Mar. 14, 2013
Brandt Road Rail Corporation, Regina, CA;
Josh Dumalski, Regina, CA;
Dan Bonnet, Regina, CA;
Greg Thomson, Emerald Park, CA;
Kyle Lockert, Regins, CA;
Bandt Road Rail Corporation, Regina, CA;
Abstract
A road/rail vehicle has front and rear road wheels, an engine driving the rear road wheels, and an indicator of actual vehicle speed. Retractable front and rear rail wheels are mounted on the vehicle and movable from a raised road position for operation in a road mode to a lowered rail position where the rail wheels engage rails of a railroad track for operation in a rail mode. A suspension system is adjustable in the rail mode to vary a weight proportion of vehicle weight that is a tractive weight carried by the rear road wheels and a guidance weight carried by the rear rail wheels, and a suspension control is adjusts the suspension system to provide a selected weight proportion. A maximum allowable vehicle speed decreases as the tractive weight increases and a maximum speed indicator shows the maximum allowable vehicle speed for the selected weight proportion.