Daniel Puzio - Baltimore MD, US Craig Schell - Street MD, US Daniele Brotto - Baltimore MD, US Andrew Seman, Jr. - Pylesville MD, US Scott Eshleman - Parkville MD, US Joseph Kelleher - Parkville MD, US Sankarshan Murthy - Towson MD, US Gabriel Concari - Eldersburg MD, US Thomas Bodine - Glenwood MD, US Michael Haupt - Abingdon MD, US Curtis Watenpaugh - Manchester MD, US
Assignee:
Black & Decker Inc. - Newark DE
International Classification:
E21B 15/04
US Classification:
173 1, 173 2, 173176, 173183, 173217
Abstract:
A power tool includes an output shaft configured to rotate about a longitudinal axis, a motor drivably connected to the output shaft to impart rotary motions thereto, and a rotational motion sensor spatially separated from the output shaft and operable to determine the user-imparted rotational motion of the power tool with respect to the longitudinal axis. A controller is electrically connected to the rotational motion sensor and the motor. The controller determines angular velocity of the power tool about the axis, rotational displacement of the power tool about the axis, and/or a direction of the rotational displacement using input from the rotational motion sensor. The controller then controls the motor according to the angular velocity, the rotational displacement, and/or the direction of the rotational displacement.
Scott Eshleman - Parkville MD, US Joseph P. Kelleher - Parkville MD, US
Assignee:
Black & Decker Inc. - Newark DE
International Classification:
E21B 15/04
US Classification:
173 1, 173 2, 173176, 173183, 173217
Abstract:
An improved method is provided for operating a power tool. The method includes receiving an input control variable from an input unit; determining a derivative of the input control variable; selecting one of a plurality of control profiles based on the control input variable and the derivative, each control profile correlating the control input variable of the input unit to a rotational speed at which to drive the output shaft; and driving the output shaft at a rotational speed in accordance with the selected control profile.
Scott Eshleman - Parkville MD, US Craig Schell - Street MD, US Andrew E. Seman - Pylesville MD, US Daniel Puzio - Baltimore MD, US Daniele C. Brotto - Baltimore MD, US Joseph P. Kelleher - Parkville MD, US Christopher W. Shook - Bel Air MD, US Steven J. Phillips - Ellicott City MD, US Dale W. Boswall - Brockville CA, US James B. Watson - Baltimore MD, US Fugen Qin - Timonium MD, US
Assignee:
Black & Decker Inc. - Newark DE
International Classification:
E21B 15/04
US Classification:
173 1, 173 2, 173176, 173183, 173217
Abstract:
An improved method is provided for operating a power tool. The method includes: monitoring rotational motion of the power tool about an axis using a rotational motion sensor disposed in the power tool; determining a direction of the rotational motion about the axis; and driving the output member in a direction defined by the detected rotational motion of the tool, where the output member is driven by a motor residing in the power tool. Thus, the output member is drive clockwise when the rotational motion of the tool is clockwise about the axis and the output member is drive counter-clockwise when the rotational motion of the tool is counter-clockwise about the axis.
Portable Alternating Current Inverter Having Reduced Impedance Losses
Daniele C. Brotto - Baltimore MD, US Nathan J. Cruise - Phoenix MD, US Erik Ekstrom - York PA, US Ren Wang - Timonium MD, US Mehdi T. Abolhassani - Austin TX, US William D. Spencer - Ellicott City MD, US Scott Eshleman - Parkville MD, US
Assignee:
BLACK & DECKER INC. - Newark DE
International Classification:
H02M 7/537
US Classification:
363131
Abstract:
A portable power supply apparatus is provided having reduced impedance losses. The portable power supply apparatus is comprised of: a portable housing; a battery system residing in the housing; and an inverter circuit residing in the housing. The battery system generates a direct current (DC) voltage having a magnitude greater than or equal to a peak value of a desired alternating current (AC) voltage. The inverter circuit receives the DC voltage directly from the battery system, converts the DC voltage to an AC output voltage and outputs the AC output voltage to one or more outlets exposed on an exterior surface of the portable housing.
Screwdriving Tool Having A Driving Tool With A Removable Contact Trip Assembly
Daniel Puzio - Baltimore MD, US Craig A. Schell - Baltimore MD, US Joseph P. Kelleher - Towson MD, US Scott Eshleman - Towson MD, US Todd A. Hagan - Towson MD, US Joseph G. Stauffer - Towson MD, US Will Wang - Suzhou, CN John D. Cox - Towson MD, US
International Classification:
B25B 21/00 B25F 5/00
US Classification:
173 2
Abstract:
A screwdriving tool that includes a driving tool (driver), a sensor, a sensor target and a contact trip assembly that is coupled to the driving tool and has a nose element. The driver has a housing, a motor and an output member that is driven by the motor. One of the nose element and the output member is axially movable and biased by a spring into an extended position. The sensor and sensor target are configured to cooperate to permit the sensor to provide a sensor signal that is indicative of movement of the one of the nose element and the output member. The motor is controllable in a first operational mode and at least one rotational direction based in part on the sensor signal.
Scott Eshleman - Parkville MD, US Joseph P. Kelleher - Parkville MD, US
Assignee:
BLACK & DECKER INC. - Newark DE
International Classification:
B25F 5/00 B23Q 17/00 B23Q 15/00
US Classification:
173 1, 173 2, 173176
Abstract:
An improved method is provided for operating a power tool. The method includes receiving an input control variable from an input unit; determining a derivative of the input control variable; selecting one of a plurality of control profiles based on the control input variable and the derivative, each control profile correlating the control input variable of the input unit to a rotational speed at which to drive the output shaft; and driving the output shaft at a rotational speed in accordance with the selected control profile.
John C. Vanko - Timonium MD, US Tal Gottesman - Timonium MD, US Daniel Puzio - Baltimore MD, US Michael K. Forster - White Hall MD, US John D. Cox - Lutherville MD, US Joseph P. Kelleher - Parkville MD, US Stuart Garber - Towson MD, US Joerg Zellerhoff - Towson MD, US Joao Norona - Baltimore MD, US Robert S. Gehret - Hampstead MD, US Scott Eshleman - Parkville MD, US Stephen P. Osborne - Pikesville MD, US Brian E. Friedman - Baltimore MD, US Robert A. Usselman - Forest Hill MD, US Anatoliy Nosov - Parkville MD, US Michael C. Doyle - Baldwin MD, US
Assignee:
BLACK & DECKER INC. - Newark DE
International Classification:
F21V 33/00
US Classification:
362119
Abstract:
A power tool includes a tool body having an output member that drives an accessory. An end effector is coupled for rotation with the output member. A light source is disposed on the end effector. A primary coil assembly is configured on the tool body and mounted concentric to the output member. The primary coil assembly includes a primary coil that is electrically connected to a power source of the power tool. A secondary coil assembly is configured on the end effector and mounted concentric to the output member. The secondary coil assembly includes a secondary coil that is electrically connected to the light source. Current flowing through the primary coil creates a magnetic field that causes current to flow through the secondary winding and power the light source.
Black & Decker Inc. - Newark DE, US John Howson - Sparks MD, US Tal Gottesman - Towson MD, US Scott J. Eshleman - Parkville MD, US Russell David Hester - Odenton MD, US Craig Alan Schell - Maryland MD, US Daniel Puzio - Baltimore MD, US Daniel L. Schwartz - Timonium MD, US
Assignee:
BLACK & DECKER INC. - Newark DE
International Classification:
B25F 5/00 B60W 10/02
US Classification:
173178, 477177
Abstract:
A power tool includes a housing, a motor disposed in the housing, a transmission disposed in the housing and coupled to the motor, an output end effector coupled to the transmission, a control circuit for controlling power delivery from a power source to the motor, and a force sensing electronic clutch including a force sensor coupled to a substantially stationary element of the transmission. The force sensor senses a reaction torque transmitted from the end effector to at least a portion of the transmission. The sensor is configured to generate a first electronic signal corresponding to an amount of the reaction torque. The control circuit compares the first electronic signal with a second electronic signal corresponding to a desired threshold torque value, and initiates a protective operation when a value of the first electronic signal indicates that the reaction torque has exceeded the desired threshold torque value.