Patents Represented by Attorney D. L. Charlton
  • Patent number: 6877773
    Abstract: Automatic and simultaneous retraction of a pair of stabilizer legs for a backhoe loader machine is beneficial for the operator (not shown). Instead of retracting the stabilizer legs by manually holding a pair of control levers continuously in a retract position, the operator (not shown) may simply move the control levers to an auto-retract position. The movement of the control levers in such a manner activates a control switch in connection with each of the control levers. The control switches, in turn, activate a timer relay that activates a solenoid detent operative with each control lever. Once the solenoid detents are in an activated state, the operator (not shown) may relinquish contact with the control levers. The solenoid detents will retain the control levers in the auto-retract position via electro-magnetic forces.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: April 12, 2005
    Assignee: Caterpillar Inc
    Inventors: John S. Bibb, Shane W. Kiger, Kenneth J. McGuire
  • Patent number: 5785139
    Abstract: A cooling system mounting arrangement includes a platform of an article of construction machinery and an engine enclosure and a cab and cab riser mounted to the platform. The engine enclosure includes an engine and associated engine cooling system. The cab is mounted atop the cab riser, and the cab riser is adapted for ducting cooling air to an auxiliary cooling system disposed in the cab riser separate from the engine cooling system. The auxiliary cooling system includes a heat exchanger and a fan assembly for flowing cooling air across the heat exchanger. The fan assembly is movably mounted to the cab riser for movement between a first position adjacent to the heat exchanger for flowing cooling air across the heat exchanger and a second position spaced apart from the heat exchanger to permit access to the downstream side of the heat exchanger for cleaning and maintenance.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: July 28, 1998
    Assignee: Caterpillar Inc.
    Inventors: Allan L. Freedy, Glenn W. Shields, Stephen D. Tiernan, Kenneth J. Chlad