Deere + Company

Ray C Huang

Bernard Edwin Romig

Nicolae V Orlandea

Jack C Wiley

A bulldozer has six track support rollers mounted on the associated track frame such that the first and last rollers are more or less rigid with the frame, the two rollers respectively next to the first and last rollers are vertically shiftably mounted and biased downwardly by respective springs having a first stiffness, and the middle two rollers are vertically shiftably mounted and biased downwardly by respective second springs having a stiffness a predetermined amount less than that of the first springs.

Bulldozer track support roller mounting

A bulldozer has track support rollers arranged such that a line drawn through their lowermost points forms a curved line. This support roller arrangement is effective to minimize large pitch motions normally experienced during operation of conventional bulldozers having rollers arranged such that a straight line passes through the lowermost points thereof.

Growing community of inventors

Bettendorf, IA, United States of America

Ray C Huang