Abstract: A speed scaler adjusts the electronic signals received from the electronic speed sensor on a vehicle to reflect the actual speed of operation of a vehicle after replacement tires are installed on the vehicle. The dimensional parameters of the original tires and the replacement tires for the vehicle are stored in the memory of the speed scaler system and compared to create a ratio for adjustment. The speed scaler is operatively positioned between the electronic speed sensor which creates an electronic pulse corresponding to the rotational speed of each wheel. The speed scaler intercepts these electronic pulses and adjusts the timing of the pulses in accordance with the ratio of the original tire circumference and the replacement tire circumference, and then transmits the adjusted electronic pulse to the Anti-Lock Brake System for re-transmission to the components of the vehicle requiring accurate vehicle speed indications.

Abstract: A power takeoff mechanism utilizes intermeshing gears as a PTO power transfer mechanism to transfer rotational power from a power takeoff input shaft to an offset power takeoff output shaft. The PTO power transfer mechanism is supported in a fluid-tight housing mounted on the rearward side of the transfer case of a four wheel drive vehicle. A braking apparatus is operably connected to the drive gear and includes a piston, a biasing spring coupled with the piston and a pressure apparatus that keeps the spring from moving the piston until the drive has been disengaged from the power takeoff input shaft. The speed of operation of the PTO output shaft can be selectively varied by changing the ratio of the respective diameters of the drive gear and driven gear within the PTO power transfer mechanism.

Abstract: A power takeoff mechanism utilizes intermeshing gears as a PTO power transfer mechanism to transfer rotational power from a power takeoff input shaft to an offset power takeoff output shaft. The PTO power transfer mechanism is supported in a fluid-tight housing mounted on the rearward side of the transfer case of a four wheel drive vehicle. A braking apparatus is operably connected to the drive gear and includes a piston, a biasing spring coupled with the piston and a pressure apparatus that keeps the spring from moving the piston until the drive has been disengaged from the power takeoff input shaft. The speed of operation of the PTO output shaft can be selectively varied by changing the ratio of the respective diameters of the drive gear and driven gear within the PTO power transfer mechanism.