Abstract: A power takeoff having an output shaft, an output gear and a connect-disconnect clutch mechanism for connecting the output gear to the output shaft, the clutch mechanism, including a clutch hub, a disc stack slidably mounted between the output gear and the clutch hub and a piston for compressing the disc stack-thereby to bring the output shaft into rotatable engagement with the transmission of an engine; in which the clutch hub is normally biased by a spring away from the piston but is confined by snap rings to limit the hub's movement along the output shaft in such a manner so that substantially no operational force is placed on the snap rings during compression of the disc stack.

Abstract: Dual-coated cubic-boron-nitride and polycrystalline-cubic-boron-nitride cutting tools (inserts) which exhibit increased durability and performance charactersitics when employed in hard turning processes.

Abstract: An extended shaft for connecting a standard, transmission mounted power take-off device to an auxiliary device which permits non-interference mounting configurations of the auxiliary device to the power take-off device. The extended shaft further provides mounting bracketry to prevent stresses when thermal expansion or contraction of relevant parts occurs during the operation of the motor vehicle or power take-off device.

Abstract: An extended shaft for connecting a standard, transmission mounted power take-off device to an auxiliary device, which permits non-interference mounting configurations of the auxiliary device on a transmission. The extended shaft further provides mounting bracketry to prevent stresses when thermal expansion or contraction of relevant parts occurs during the operation of the motor vehicle or power take-off device.

Abstract: A power takeoff of compact dimension yet capable of high horsepower output which includes a shifting mechanism, air actuated internally to connect internally aligned banks of splined gear members yet assures against inadvertent rotation of the output shaft without the need for a drag brake.

Abstract: A system for providing sufficient space to accommodate a wrench for tightening the securing nuts in the restricted confines of a power take off mounted to a vehicle's transmission which employs step studs whose large diameter ends are threaded into the standard S.A.E. hole pattern apertures of the transmission P.T.O. window, while the studs are designed to have significantly smaller opposite ends which protrude through the aligned P.T.O. housing apertures, thus allowing smaller nuts to be used to make room for the wrench.

Abstract: A drag brake mechanism prevents rotation of the shaft of a truck mounted connect-disconnect, clutch-operated, power takeoff device when the clutch is in its disconnect mode, by applying a constant braking force to the shaft which cannot be overcome by inadvertent frictional forces within the discs of the clutch that may occur despite the clutch being in its disconnect mode. The constant force selected, however, is insufficient to create undue heat during normal shaft rotation and is easily overcome when the clutch is placed in its connect mode.

Abstract: There is provided a mechanism for engaging a power takeoff employed primarily to drive a load from a truck engine having a solenoid with a high energy coil that is energized for a short interval to produce engagement of the power takeoff and a low energy coil to maintain engagement of the power takeoff. The mechanism includes an armature movable from a retracted to an activated position to move the power takeoff engagement mechanism to a power takeoff engaged position and a high rate spring which is compressed if the power takeoff does not engage whereby to return the armature to its retracted position upon de-energization of the high energy coil. A second lower rate spring moves the armature to its retracted position upon de-energization of the lower energy coil.

Abstract: An electrical speed control system for selectively connecting an accessory to a vehicle engine having a conventional alternator driven thereby, utilizes the voltage output of the alternator stator to determine the rotational speed of the engine, and permits the accessory to be connected to the engine when the shaft speed is at or below a maximum safe engagement speed, and disconnects the accessory when the speed is above a maximum safe speed for the accessory. The speed control system further prevents reengagement of the accessory after reaching and falling below the high-speed disengage point until the rotational speed of the engine has fallen below the maximum safe engagement speed level.

Abstract: An electrical speed control system for selectively connecting an accessory to a vehicle engine having a conventional alternator driven thereby, utilizes the voltage output of the alternator stator to determine the rotational speed of the engine, and permits the accessory to be connected to the engine when the shaft speed is at or below a maximum safe engagement speed, and disconnects the accessory when the speed is above a maximum safe speed for the accessory. The speed control system further prevents reengagement of the accessory after reaching and falling below the high-speed disengage point until the rotational speed of the engine has fallen below the maximum safe engagement speed level.