Abstract: A versatile paper folder provides the folding of paper of any size within the pre-determined range into half-fold, letter fold, z-fold, double parallel fold, and brochure fold. There are two paper stop drive assemblies of similar construction, each providing for the automatic positioning of the respective paper stops. In both paper stop drive assemblies, a potentiometer provides an electronic feedback to a microprocessor on the current position of a belt with the paper stop. The microprocessor then activates a motor that moves the belt with the paper stop to a new position defined by the user input. The automatically-adjustable paper stops require the input from a user on the type of fold and paper, but not the user's intervention in the adjustment of the paper stops.

Abstract: A hand held battery powered tool having a motor with a rotor within a stator having stator windings and a motor control trigger operably movable between off and enable positions with means for sensing the trigger position and proving an output signal indicating trigger movement to the off position and means responsive to the output signal for shorting the motor windings and dissipating the kinetic energy of the rotating rotor as heat. A method of retarding rotation of the rotor of the motor comprising the steps of sensation of motor operation command and shorting the motor windings upon sensing the motor operation command while continuing electronic commutation of the motor windings is also provided.