Wheel substitutes for land vehicles inventions 02/07

20070029877 - Load bearing crawler assembly: A crawler apparatus capable of being moved along a surface including a frame having first and second ends, a first end roller coupled to the frame and disposed adjacent the first end of the frame, a second end roller coupled to the frame and disposed adjacent to the second end... Agent: Raytheon Company C/o Daly, Crowley, Mofford & Durkee, LLP

20070029878 - Land clearing vehicle and track assembly therefor: A land clearing vehicle comprises a land clearing tool to be mounted thereon and to be activated thereby, and a track assembly for addressing and maneuvering through precarious terrain conditions. The land clearing tool is comprised of a generally vertical comb-like structure terminating in a set of substantially forward pointing... Agent: Fasken Martineau Dumoulin LLP

20070024116 - Shaft for roller wheel: The invention provides a shaft for a roller wheel which is excellent in strength and can achieve a weight saving. The invention provides a shaft for a roller wheel which rotatably supports a roller (3) outward fitted between both end portions (5a, 5b) in a state in which both end... Agent: Armstrong, Kratz, Quintos, Hanson & Brooks, LLP