Abstract: A motor grader vehicle control apparatus is provided including first and second joystick assemblies for controlling a blade and vehicle drive and steering systems. Additional control mechanisms are included on the joystick assemblies to provide further control of the blade and vehicle systems. Movement of the joystick assemblies correspond to operations of the blade and vehicles systems in an ergonomic and intuitive manner.
Type:
Grant
Filed:
December 18, 1998
Date of Patent:
February 1, 2000
Assignee:
Caterpillar Inc.
Inventors:
Craig B. Kelley, Daniel E. Shearer, Susan M. Boast
Abstract: An electromagnetically transparent fluidic operator for adapting a conventional, mechanically operated electric switch to remote, fluidic operation includes a non-metallic housing for being rigidly attached to the electric switch with a chamber in the housing aligned with a mechanical actuator of the electric switch and a non-metallic, expandable reservoir mounted by the housing. The reservoir includes a nipple rigidly attached to the housing and a deformable diaphragm forming a seal with the nipple and being disposed in the chamber close to the mechanical actuator. The reservoir is pressurized with fluid from a remote location causing the diaphragm to deform and the reservoir to expand thereby applying a positive pressure or operating force against the mechanical actuator to operate the electric switch.
Type:
Grant
Filed:
June 3, 1996
Date of Patent:
February 1, 2000
Assignee:
The United States of America as represented by the Secretary of the Army