Importance

Loading Importance Indicators...

Abstract

An electrical circuit for controlling the tilting of a mast assembly and the lifting of the fork of materials handling vehicles avoids the previously required extra control manipulations while continuing to maintain the safety standards for this type of vehicle. Electromechanical relays or their equivalent are employed to recall whether the tilt limit switch or the height limit switch was first actuated and allows the function associated therewith to continue even though other limit switch is subsequently actuated, thus reducing the number of control operations required during typical vehicle operations. The circuit senses whether both limit switches have been actuated when the vehicle is first powered up, and if so, then one of the limit switches must first be deactuated before either function is permitted to continue either forward or upward, thereby insuring that the vehicle will not be operated beyond predetermined safety limits.

Loading the Abstract Image...

First Claim