The Stanley Works

Stanley Black Decker, Inc.

William L Naumann

Zuher Naim Khalaf

Stephen M Kainec

Duane R Bookshar

Jeffrey Scott Aranowski

Craig A Montross

Leonard V Demchak

Doug Versele

Jeffrey S Aranowski

A torque applying system includes a torque applying tool having a motor and rotating output spindle, a torque sensor that measures an instantaneous torque exerted by the output spindle during a fastening cycle, and a controller operatively connected to the tool to control the tool's rotational speed during the fastening cycle. The controller is programmed to control the tool's rotational speed to be [(&#x3c4;&#x2212;&#x3c4;)/t]/r, wherein t is a time constant of speed control, &#x3c4;is a target final torque for the fastening cycle, and r is a torque rate.

Torque-applying tool and torque controller therefor

A hand-held, battery powered tool (e.g., nutrunner, drill) includes an output head operatively connected to a motor, a plurality of battery cells, an ON/OFF start switch, a resistance sensor that measures a resistance of the output head to movement, and a controller. When the start switch is ON and the resistance sensed by the resistance sensor does not exceed a predetermined shift resistance, the controller automatically connects the plurality of battery cells to each other and the motor in series. When the start switch is ON and the resistance sensed by the resistance sensor exceeds the predetermined shift resistance, the controller automatically connects the plurality of battery cells to each other in parallel and to the motor.

Battery management system for a cordless tool

A controller that controls an automated tool that comprises a monochromatic display, a backlighting module, and a processor. The monochromatic display comprises a plurality of pixels that are selectively activated and deactivated to convey information to a user. The backlighting module provides a backlight for the display, wherein the backlighting module is capable of controllably changing the color of the backlight. The processor that controls the display to selectively activate and deactivate the plurality of pixels to convey information about the automated tool, and wherein the processor controls the backlighting module such that the backlight provided by the backlighting module conveys information about the automated tool.

Controller with information conveying backlight module and cable for connecting the controller to an automated tool

A method and apparatus for correcting torque overshoot in power tools wherein torque per angle rate is sensed on each rundown and the speed of the tool is automatically adjusted to maintain torque accuracy on higher torque rate joints while maintaining speed on lower torque rate joints, automatically minimizing tool heating and maximizing job rate. In the setting of threaded fasteners, joint rates are defined as high (hard), medium or low (soft). Two torque points are defined, a first torque point and a second torque point, which are percentages of the target torque, for example 25% and 50% respectively. Two angle values are defined corresponding to the number of degrees of tool spindle rotation measured along the portion of the torque/angle curve between the first torque point and the second torque point on typical linear hard and medium joints. Two final tightening speeds are defined as percentages of full speed corresponding to the tool system requirements for accurate shutoff on the two types of joints, hard and medium. A controller counts the number of angle degrees between the first torque point and the second torque point. The angle counted is compared with the values of hard and medium angles to determine the joint rate. If the angle is less than or equal to the hard angle, the joint is considered hard and the controller immediately downshifts the tool to the hard speed. If the angle is greater than the hard angle but less than or equal to the medium angle, the joint is considered medium and the controller immediately downshifts the tool to the medium speed. If the angle is greater than the medium angle, the joint is considered soft and the speed is not changed.

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Chardon, OH, United States of America

William L Naumann