Other

Jack Oberlander

Peter J Christianson

Dan P Steinberger

An endless track system for providing a plurality of rigid grouser members attached about the exterior surface of a rubber track. The inventive device includes an endless rubber track having an outer surface and an inner surface, a plurality of gripping members attached to the outer surface of the endless track, and a plurality of inner members attached to the inner surface of the endless track and to the gripping members. Each of the inner members is comprised of an elongate support member with a pair of opposing side walls attached orthogonally to. The gripping members are preferably comprised of a center member surrounded by an outer coating. The outer coating may be comprised of any plastic or rubber material for reducing damage to surfaces traveled upon. The gripping members are preferably attached to the inner members by a plurality of fasteners that extend through the endless rubber track. In an alternative embodiment, the gripping members may be comprised of a member having a U-shaped cross sectional area.

Endless track system

A ground leveler attachment for a ground working device comprises a bracket fastened to a shank supporting a ground breaking tool, a carrier arm connected to the bracket, a pair of leg supports in pivotal contact with the carrier arm, a pair of springs biasing the legs supports into pivotal contact with the carrier arm, a pair of leg members extending from the leg supports, and a pair of levelers rotatably mounted upon the leg members and biased into a ground engagement position by the springs. The levelers independently and resiliently retract upon contact with a relatively immoveable object or objects to avoid being broken off from the leg members or severely damaged beyond usefulness.

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Fargo, ND, United States of America

Jack Oberlander