David John Hansen
Plumbers in Sandy, UT
License number
Utah 151097-5518
Issued Date
May 5, 2008
Expiration Date
Nov 30, 2014
Category
Plumber
Type
Master Plumber
Address
Address
Sandy, UT
Professional information
Traction Device For Tracked Vehicle
US Patent:
5547268, Aug 20, 1996
Filed:
Jun 7, 1994
Appl. No.:
8/255226
Inventors:
David W. Hansen - Sandy UT
International Classification:
B62D 5528
US Classification:
305191
Abstract:
An improved unit having a base and a plurality of teeth integral with the base and projecting outwardly therefrom. The teeth and base are formed of a suitable elastomeric material, such as natural rubber or urethane rubber. The teeth have conical outer surface and V-shaped notches or openings between adjacent teeth. The teeth have flat, angled surfaces. There are two rows of teeth on each base, respectively, and the teeth are aligned with each other front to back. The base is beveled so that each tooth will have maximum area at the root thereof.