Westman, Champlin & Kelly, P.A.
Hydraulic interblock system
 A control apparatus controls movement of a lift arm and tool on a skid steer loader. Power actuators are coupled to the lift arm circuit and the tool circuit for moving the lift arm and tool along a path. A sensor is coupled to the skid steer loader for sensing a desired parameter and providing a signal indicative of the desired parameter. A power interrupter is coupled between the power actuators for the lift arm and tool and the sensor and interrupts power to the actuators based on the signal. A manually operable bypass mechanism is coupled to the power interrupter and the power actuators and is used to bypass the power interrupter to allow movement of the lift arm. 
Clark Equipment Company
B B B B B G B
B60R B60R B60R B60N B60R G01B B60K
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Thomas Q. Gerald M. Thomas M. Orlan J. Lyle L. William C. Knute K. Larry E.
Haeder Berg Sagaser Loraas Johnson Shelbourn Brock Albright