Patents Assigned to JD-Bertolini Industries, Ltd.
  • Extendable chassis
    Patent number: 4635742
    Abstract: An extendable chassis is provided with an additional axle which is moved to a position with the wheels thereof on the ground when the chassis is extended and to a position with the wheels off the ground when the chassis is retracted. The chassis also includes means for automatically tripping a means for locking the chassis after a preselected extension or retraction thereof.
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: January 13, 1987
    Assignee: JD-Bertolini Industries, Ltd.
    Inventor: William A. Bertolini