Abstract: Disclosed is a pump comprising a rotatable barrel, a tiltable pump cam, and a proportional servo actuator operatively connected to the pump cam to affect the angle between the pump cam and the axis of the barrel.

Abstract: A method and apparatus for hydraulically driving and controlling a cooling fan.The apparatus includes a variable displacement hydraulic pump driven by a prime mover and a hydraulic motor connected to the pump and being driven thereby. The motor in turn is connected to a fan which serves to cool fluid passing through an associated heat exchanger. A temperature/force transducer monitors the temperature of fluid flowing from the exchanger and serves to control a pilot relief valve associated therewith. A pressure regulator is connected to the pump and acts in cooperation with the relief valve to control fluid pressure from the pump and thus torque of the motor and speed of the cooling fan.The method includes the steps of pumping hydraulic working fluid to a motor and driving the motor with the full hydraulic output of the pump to power a fan associated with a cooling system heat exchanger.

Abstract: A shearing cutter for wire and cable, particularly insulated metal wires and wire bundles as used in electrical and electronic circuits, is constructed in the form of a hand tool with elongated, hinged handles adapted to develop shearing forces between cooperating blades cantilevered beyond the hinge point from each of the handles. The blades are symmetrical in shape and define a substantially circular opening between semicircular bights sharpened into cutting edges in each of the blades. A wire or cable is maintained in a central location with respect to the aforementioned bights by the enveloping nature of the cutting edges, resulting in a clean, uniform shear plane.

Abstract: The combination of a snowmobile and a watertight hull with propeller drive shaft wherein the snowmobile has a drive shaft which includes telescopically extensible section on both ends of which universal joints are provided so that the snowmobile drive shaft can be readily disconnected from its traction tread and connected to the propeller drive shaft of said hull.