Automatic Control Of Power Operated Means Patents (Class 173/2)
  • Patent number: 8800679
    Abstract: An improved method is provided for operating a power tool. The method includes receiving an input control variable from an input unit; receiving at least one tool parameter relating to the power tool; determining a derivative of the input control variable; selecting one of a plurality of control profiles based on the control input variable, the derivative of the input control variable, and the tool parameter, 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.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 12, 2014
    Assignee: Black & Decker Inc.
    Inventors: Scott Eshleman, Joseph P. Kelleher
  • Patent number: 8800680
    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 second derivative of the input control variable; selecting one of a plurality of control profiles based on the control input variable and the second 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.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 12, 2014
    Assignee: Black & Decker Inc.
    Inventors: Scott Eshleman, Joseph P. Kelleher
  • Patent number: 8800678
    Abstract: An air tool or air motor lubricant for adding to compressed air, and the method of operating air tools with the lubricant, in which the lubricant comprises a mixture of a polyalphaolefin or polyalphaolefin blend having a viscosity in the range of 2 to 3000 cSt and a high molecular weight complex ester in a ratio of 1.3:1 to 20:1 of the polyalphaolefin or polyalphaolefin blend to the high molecular weight complex ester. The lubricant comprises about 58 to 90 vol % polyalphaolefin or polyalphaolefin blend and about 10 to 42 vol % high molecular weight complex ester. The mixture of polyalphaolefin or polyalphaolefin blend and high molecular weight complex ester is added in an amount in the air of about 0.2 to 0.6 ppm effective to generate a lubricant airborne mist concentration in exhaust air of 0.2 ppm or less.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: August 12, 2014
    Inventors: Keith Donald Norman Klayh, William Culhane
  • Publication number: 20140216773
    Abstract: In a method for controlling an electric machine tool having an electric motor for driving a rotating insertion tool, the electric machine tool is operated in one of multiple operating modes, and at least one parameter of the machine tool is detected. The instantaneous operating state of the electric machine tool is ascertained and evaluated based on the detected parameter. A protective function is activated when the presence of a critical operating situation is recognized during the evaluation of the instantaneous operating state. The instantaneous operating mode of the electric machine tool is detected, and the evaluation of the instantaneous operating state is adapted in each case to the instantaneous operating mode.
    Type: Application
    Filed: January 29, 2014
    Publication date: August 7, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventor: Christoph STEURER
  • Publication number: 20140216772
    Abstract: A fastening device may include a fastening tool body having a fastener on one end; a drive unit installed on the fastening tool body and providing fastening power to the fastener; a gyroscopic sensor that is installed on the fastening tool body and detects the displacement of the fastening tool body and outputs a detection signal thereof; an angle sensor that detects the angle of the fastening tool body and outputs a detection signal thereof to a controller; and the controller that receives the signals output from the gyroscopic sensor and the angle sensor and output a set actuating signal to the drive unit.
    Type: Application
    Filed: November 25, 2013
    Publication date: August 7, 2014
    Applicant: Hyundai Motor Company
    Inventor: Jaehyun LEE
  • Publication number: 20140196920
    Abstract: A power tool includes: a drive unit for a tool; an operating device for activating the power tool; a measuring device for measuring a motion of the power tool; and a filter for filtering at least one measured value of the measured motion. The operating device is configured to reduce a power output of the drive unit when the filtered, measured value corresponds to a state of reduced ease of operation.
    Type: Application
    Filed: January 10, 2014
    Publication date: July 17, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Bernd WIRNITZER, Christoph STEURER
  • Patent number: 8763721
    Abstract: The invention relates to an electrical machine tool, particularly a hand machine tool, having a contrast detection device, an analysis unit, and at least one sensor provided for capturing a surface of a work piece. According to the invention, the analysis unit is provided for detecting a differentiation of the surface from an at least partially automatic guide using data captured by a sensor.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: July 1, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Thilo Koeder, Joachim Platzer
  • Patent number: 8757287
    Abstract: An electric-motor kitchen appliance, in particular an electric-motor handheld device, preferably a hand mixer, includes a switch. The invention also relates to a finger-actuated electric control for the switch, and to a method for switching on/off a kitchen appliance. The switch is unlocked when the safety switch is actuated by the finger of a user. The safety switch is electronically switched. The possibility of unintentionally operating the electric-motor of the kitchen appliance is reduced due to the manual operation of the two separate switches. As a result, the safety of the electric-motor kitchen appliance in the household is significantly increased.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: June 24, 2014
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Marjan Mak, Darko Ogrizek, Aleksander Sedovsek, Uros Semeja
  • Patent number: 8746364
    Abstract: An electric power tool includes a motor; a speed reducer for transferring a rotational power of the motor at a reduced speed; and a reduction ratio changing unit for changing a reduction ratio of the speed reducer. The speed reduction mechanism includes an axially slidable changeover member and a gear member, the changeover member being engaged with or disengaged from the gear member depending on an axial slide position thereof. The reduction ratio changing unit includes a shift actuator for axially sliding the changeover member, a driving state detector for detecting a driving state of the motor, a slide position detector for detecting a slide position of the changeover member and a controller for driving the shift actuator and for changing a drive control of the shift actuator depending on detection results of the slide position detector unit and the driving state detector unit, respectively.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: June 10, 2014
    Assignee: Panasonic Corporation
    Inventors: Masatoshi Atsumi, Kenichiro Inagaki, Tadashi Arimura, Hiroyuki Kaizo, Yutaka Yamada
  • Patent number: 8733473
    Abstract: A method for sequencing drill holes for a mobile drill rig is disclosed. The method may include receiving a hole pattern having a plurality of planned holes and generating at least a first group of parallel pathways and a second group of parallel pathways between the plurality of holes of the hole pattern. The first group of pathways may be angled relative to the second group of pathways. The method may also include selecting between the first group of pathways and the second group of pathways based on which group of pathways includes fewer total pathways.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: May 27, 2014
    Assignee: Caterpillar Inc.
    Inventors: Frederic Nadeau, Daniel Francis Stanek
  • Publication number: 20140110138
    Abstract: This invention is an installation of a protective apparatus to prevent safety problems of machine tools caused in machining work-load process. The protective apparatus is comprised of a circuit used to slowly rotate the loaded machine tool by stepping it at a low speed and low power one full turn to insure clear workload path, and before full power is applied. This protective system will activate the full power only if a full rotation is achieved without any obstacles caused by chuck wrench or work-load interference with machine parts. The machine will subsequently arm itself to go into full power rotation if the operator activates the machine within a short period of time after the safety rotation is completed. The safety cycle is performed each time the operator activates the machine tool. This protective apparatus keeps the machine tool in low-speed and low-power unless the safety cycle has been performed each time the machine tool is turned on.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Inventors: David Andrew Zarrin, Teresa Louise Zarrin
  • Patent number: 8695726
    Abstract: An orthopedic impacting tool comprises a motor, a linear motion converter, an air chamber, a compression piston, an impacting element, an anvil element, and a broach adapter. The compression piston may cause the impacting element to apply controlled force on a broach adapter to create a precise opening for subsequently disposing a prosthesis in a patient. The tool may further comprise a detent for holding the impacting element in a position until a sufficient pressure is applied to release the impacting element. The tool allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of the broach and tool from the opening. A force adjustment control of the tool allows a user to increase or decrease the impact force. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: April 15, 2014
    Assignee: Medical Enterprises LLC
    Inventor: Christopher Pedicini
  • Publication number: 20140096986
    Abstract: A chain saw as a power tool includes a combustion engine and an electric motor. The chain saw has a driving shaft which drives a saw chain, a battery pack which provides electric current to the electric motor, a controller which is connected to the battery pack, and a sensor which detects a driving state of a driving mechanism including the combustion engine and the electric motor. In the chain saw, the saw chain is driven in a hybrid driving mode in which both the combustion engine and the electric motor drive the driving shaft. Further, the controller controls a driving of the combustion engine based on a detection result of the sensor.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 10, 2014
    Applicant: MAKITA CORPORATION
    Inventors: Shinji HIRABAYASHI, Kenya YANAGIHARA, Yoshitaka ICHIKAWA
  • Publication number: 20140096987
    Abstract: A chain saw as a power tool includes a combustion engine and an electric motor. The chain saw has a driving shaft which drives a saw chain, a battery pack which provides electric current to the electric motor, and a controller which is connected to the battery pack. In the chain saw, both the combustion engine and the electric motor drive the driving shaft so that the driving shaft drives the saw chain. Further, the controller controls a driving of the electric motor based on a remaining capacity of the battery pack.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 10, 2014
    Inventors: Shinji HIRABAYASHI, Yoshitaka ICHIKAWA
  • Patent number: 8689900
    Abstract: A rotary tool includes an externally operable operation switch; a motor serving as a power source; a power transfer block for transferring the rotation of the motor; a load detection unit for detecting an amount of load of the motor; and a control unit for controlling the motor. The control unit is configured to perform an operation control by which the motor is controlled so that a rotation speed of the motor is increased in proportion to the operation amount of the operation switch and a feedback control by which the rotation speed of the motor is controlled depending on the detection result of the load detection unit. The control unit inhibits the feedback control during the time when the operation amount of the operation switch is equal to or less than a threshold and performing the feedback control only when the operation amount of the operation switch is greater than the threshold.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: April 8, 2014
    Assignee: Panasonic Corporation
    Inventors: Tatsuya Miwa, Masaki Ikeda
  • Publication number: 20140090860
    Abstract: A method for detection of false positive condition that an object is in contact with an implement in a power tool includes sampling an electrical signal received from the implement, identifying in-phase and a quadrature components of the sampled electrical signal, identifying a magnitude of each of the samples with reference to the in-phase component and the quadrature component for the samples, detecting an object approaching the implement with reference to the plurality of samples, identifying a signal-to-noise ratio for the samples, and identifying a false positive condition for the detected object with reference to the identified signal-to-noise ratio for the identified samples.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 3, 2014
    Applicants: Robert Bosch GmbH, Robert Bosch Tool Corporation
    Inventors: Bharadwaja Maharshi Ramaswamy, Sai Yogesh Kumar Mangapuram, Niranjan Sathyanarayanarao Krishnarao, Vishwanatha Manevarthe Srikantiah
  • Patent number: 8678106
    Abstract: A rotary impact tool includes: a hammer rotating by receiving a rotational force of a motor; an anvil rotating by receiving a rotational force of the hammer; and an end tool attached to the anvil, the rotary impact tool being constructed such that when a torque of a value not less than a predetermined value is applied to the anvil from the outside, the hammer is disengaged from the anvil to rotate idle and applies an impact to the anvil in a rotational direction after rotating idle by a predetermined angle, the rotary impact tool including an impact detector configured to detect impacts and a speed switching device configured to switch the rotational speed of the motor, and when the impact detector detects an impact during rotation of the anvil in a tightening direction, the speed switching device switches the rotational speed of the motor from a normal speed to a low speed.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: March 25, 2014
    Assignee: Makita Corporation
    Inventors: Yutaka Matsunaga, Hirokatsu Yamamoto, Katsuna Hayashi, Yoshitaka Ichikawa
  • Patent number: 8668025
    Abstract: A hand-guided work apparatus includes a combustion engine to drive a work tool. The combustion engine includes a crankcase (14) in which a crankshaft (16) is rotatably mounted about a rotational axis (44). A pressure sensor (27) and a temperature sensor (26) are arranged on the crankcase (14). The pressure sensor (27) and the temperature sensor (26) are arranged in a common sensor housing (31). In the typical put-down position (8) of the work apparatus, the pressure sensor (27) and the temperature sensor (26) are arranged below a plane (45) which is parallel to the horizontal storage surface (7) and contains the rotational axis (44) of the crankshaft (16). A connecting channel (25) is formed in the sensor housing (31). The connecting channel (25) connects the pressure sensor (27) to the crankcase interior (20) and the base (35) of the connecting channel (25) slopes down toward the crankcase interior (20) in the typical put-down position (8) of the work apparatus.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: March 11, 2014
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Arno Kinnen, Felix Mayer, Wolfgang Layher
  • Publication number: 20140054054
    Abstract: Embodiments provide methods, apparatuses, and systems for battery operated tools, such as chainsaws, are provided. In accordance with embodiments herein, a chainsaw may include various components, such as a control board having a controller, a battery terminal block, a motor, a brake switch, a trigger switch, and/or other components. In various embodiments, components of the battery operated tool are provided that improve the capabilities and/or operation of the tool.
    Type: Application
    Filed: March 5, 2012
    Publication date: February 27, 2014
    Applicant: Blount, Inc.
    Inventors: Ian Osborne, Jonathan Ziring, Shaun Conley, Guenther Wimmer
  • Patent number: 8657027
    Abstract: A Single Piezo-Actuator Rotary-Hammering (SPaRH) Drill includes a horn actuator having high power piezoelectric materials and a flexure pre-stress to increase the actuators effectiveness. The drill is a low mass, low power, compact coring drill measuring 20-cm high by 7-cm diameter and having a total weight of 2 kg including drive electronics. Using an average power of 50-Watts, the drill basalt is expected to cut basalt at a rate of 0.2 cm/min down to depth of 10-cm and create cuttings and an intact core. The drill is expected to operate under different environments including Martian ambient (6 Torr and down to ?50° C.), and liquid nitrogen temperatures (77 K) and low pressure (<<1 Torr) to simulate lunar polar and Europa conditions. Materials expected to be sampled include Kaolinite, Saddleback Basalt, Limestone, Volcanic Breccia, Siltstone, ice, permafrost and layered rocks with different hardness.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: February 25, 2014
    Assignee: California Institute of Technology
    Inventors: Stewart Sherrit, Xiaoqi Bao, Mircea Badescu, Yoseph Bar-Cohen
  • Publication number: 20140048298
    Abstract: A hand-held power tool includes a drive device in a housing. The drive device is intended to drive a tool accommodated in a tool-accommodating region. An adjusting motion of the hand-held power tool by the user is detected via a sensor device. A controlled variable for setting the drive device is generated in an open-loop or closed-loop control device in the hand-held power tool according to the detected adjusting motion.
    Type: Application
    Filed: February 14, 2012
    Publication date: February 20, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Rudolf Fuchs, Amos Albert, Steffen Petereit, Christoph Koch, Istvan Szell
  • Patent number: 8653764
    Abstract: A power saw having a reciprocating blade, including a housing having a handle portion for holding the saw; a variable speed motor in the housing for driving the reciprocating blade; a mechanism configured to move the reciprocating blade in a non-linear path; an electronic controller for controlling the operation of the motor; a trigger switch configured to provide an electrical signal to the controller that is proportional to the amount of travel that the switch is moved, wherein the signal causes the controller to operate the motor through a range of operating speeds; and a mode switch operatively connected to the controller and including a first mode providing normal operating speeds responsive to the trigger switch being selectively moved through its range of travel, and a second mode wherein the operating speeds are within the range of about 50% to about 80% of the normal operating speeds.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: February 18, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Stephen C. Oberheim
  • Publication number: 20140041887
    Abstract: An electrical combination including a power tool and a battery pack. The power tool includes power tool terminals. The battery pack is configured to be interfaced with the power tool. The battery pack includes a battery pack housing, at least three terminals, and a plurality of battery cells. The battery pack terminals include a positive terminal, a negative terminal, and a sense terminal. The at least three terminals are configured to be interfaced with the power tool terminals. The plurality of battery cells are arranged within and supported by the battery pack housing. Each of the battery cells has a lithium-based chemistry and a respective state of charge, and power is transferable between the battery cells and the power tool. A circuit is configured to monitor the battery cells, detect a charge imbalance among the battery cells, and prevent the battery pack from operating when the charge imbalance is detected.
    Type: Application
    Filed: July 16, 2013
    Publication date: February 13, 2014
    Applicant: Milwaukee Electric Tool Corporation
    Inventors: Todd W. Johnson, Dennis J. Grzybowski, Mark A. Kubale, Jay J. Rosenbecker, Gary D. Meyer, Jeffrey M. Zeiler, Kevin L. Glasgow, Karl F. Schuecher
  • Publication number: 20140008087
    Abstract: A combination of electric tools includes a first electric tool and a second electric tool respectively having an independent power supply. The second electric tool starts working automatically responding to the startup of the first electric tool. Thereby the second electric tool starts automatically after the first electric tool is started to operate by a user without an extra operation of the user, which is convenient to the user.
    Type: Application
    Filed: December 18, 2012
    Publication date: January 9, 2014
    Applicant: POSITEC POWER TOOLS (SUZHOU) CO., LTD.
    Inventors: Warren Brown, Harry Szommer, Graham Gerhardt
  • Patent number: 8616300
    Abstract: A power tool of the present teachings comprises a prime mover that drives a tool, a main switch that causes the prime mover to operate when the main switch is turned on and causes the prime mover to stop operating when the main switch is turned off, an illuminator that lights a working area of the tool, and a lighting mode selector switch for switching the lighting mode of the illuminator between a plurality of lighting modes which include a first lighting mode and a second lighting mode. When the first lighting mode is selected, the illuminator will be turned on for a first predetermined period from the point at which the main switch is turned off. When the second lighting mode is selected, the illuminator will not be turned on during the first predetermined period from the point at which the main switch is turned off.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: December 31, 2013
    Assignee: Makita Corporation
    Inventors: Jiro Suzuki, Hirokatsu Yamamoto, Takuya Kusakawa
  • Patent number: 8616299
    Abstract: A motor control device includes a target value setting unit, a measuring unit, a deviation calculating unit, a proportional control unit, an integral control unit, and a disabling unit. The deviation calculating unit calculates a deviation between a target value, set by the target value setting unit, and a measured value for rotational speed, measured by the measuring unit. The disabling unit disables proportional control, performed by the proportional control unit, when the deviation, calculated by the deviation calculating unit, is a value within a predetermined range.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: December 31, 2013
    Assignee: Makita Corporation
    Inventor: Yoshitaka Ichikawa
  • Publication number: 20130333906
    Abstract: A machine tool with a tool holder equipped to mount a chiseling tool moveably along a movement axis. A magnetic-pneumatic striking mechanism contains a primary drive arranged around the movement axis. The primary drive includes a first magnetic coil and a second magnetic coil in sequence in the impact direction. The striking mechanism has, in sequence, a striker and an anvil arranged within the magnetic coils on the movement axis in the impact direction. In addition, the striking mechanism has an air spring affecting the striker in the impact direction. A controller is configured to activate the primary drive during an active retraction phase to accelerate the striker opposite the impact direction until a kinetic energy of the striker is sufficient to achieve a selected compression of the air spring as a function of the impact energy of the striker.
    Type: Application
    Filed: June 14, 2013
    Publication date: December 19, 2013
    Inventor: Albert Binder
  • Publication number: 20130333904
    Abstract: A machine tool with a tool holder which is equipped to mount a tool, such as a chiseling tool, moveably along a movement axis. A striking mechanism contains a primary drive, arranged around the movement axis, containing at least one magnetic coil. The striking mechanism has a striker and an anvil arranged within the magnetic coil on the movement axis in sequence in the impact direction. The anvil protrudes at least partially into the magnetic coil. In addition, the striking mechanism can have an air spring affecting the striker in the impact direction. A controlled power source forms an electrical circuit in which a current flows, controlled at a target value, from the power source and into at the at least one magnetic coil during an acceleration phase. A controller ends the acceleration phase when a change, typical for an impact, is detected in the current flowing in the magnetic coil or a change, typical for an impact, is detected in a control variable of a control circuit of the power source.
    Type: Application
    Filed: June 14, 2013
    Publication date: December 19, 2013
    Inventors: Klaus Raggl, Michael Wierer, Chafic Abu Antoun
  • Publication number: 20130333910
    Abstract: According to one embodiment, an impact tool includes: a motor; and a hammer that is connected to the motor and that has a striking-side surface; and an anvil that is journalled to be rotatable with respect to the hammer, that has a struck-side surface and that provides a striking power to a tip tool, wherein the motor is drivable in: a first driving mode in which the motor is continuously driven in a normal rotation; a second driving mode in which the motor is intermittently driven only in the normal rotation; and a third driving mode in which the motor is intermittently driven in the normal rotation and in a reverse rotation.
    Type: Application
    Filed: July 29, 2010
    Publication date: December 19, 2013
    Applicant: HITACHI KOKI CO., LTD.,
    Inventors: Hideyuki Tanimoto, Nobuhiro Takano, Tomomasa Nishikawa, Kazutaka Iwata, Hironori Mashiko, Hayato Yamaguchi, Atsushi Nakagawa, Katsuhiro Oomori, Mizuho Nakamura, Hiroki Uchida, Saroma Nakano
  • Patent number: 8607892
    Abstract: According to an aspect of the present invention, there is provided a rotary striking tool includes: a motor; an oil pulse unit that is driven by the motor; an output shaft that is coupled to the oil pulse unit so that a tip tool can be attached to the output shaft; a first detection unit that detects a rotation angle of the motor and outputs a first output signal; a second detection unit that detects an impact generated at the oil pulse unit and outputs a second output signal; and a control unit that controls a rotation of the motor, wherein the control unit uses a portion of the second output signal based on the first output signal for control of the rotation of the motor.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: December 17, 2013
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshio Iimura, Kenro Ishimaru, Kazutaka Iwata, Nobuhiro Takano
  • Patent number: 8602124
    Abstract: An orthopedic impacting tool comprises a motor, an energy storage chamber, a striker, and an anvil. The motor stores energy in the energy storage chamber and then releases it, causing the striker to apply a controlled force on an adapter to create a precise impact for use in a surgical setting. The tool may further comprise a combination anvil and adapter. The tool further allows forward or backward impacting for expanding the size or volume of the opening or for facilitating removal of a broach, implant, or other surgical implement from the opening. An energy adjustment control of the tool allows a surgeon to increase or decrease the impact energy. A light source and hand grips improve ease of operation of the tool.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: December 10, 2013
    Assignee: Medical Enterprises, LLC
    Inventor: Christopher Pedicini
  • Publication number: 20130319710
    Abstract: A power tool enabled to detect an inadvertent rotation at higher accuracy includes a first sensor that detects a first driving information corresponding to a kinetic movement state of the tool body when the tool body is rotated around a longitudinal axis of the tool bit in the event of a working operation of the power tool, a second sensor that detects a second driving information corresponding to an output torque of the tool bit driven by the motor, and a controller connected to the first sensor and the second sensor for controlling the power tool. The controller is configured to calculate holding information corresponding to a holding force of a user to hold the tool body based on the first driving information and the second driving information and control the driving of the power tool based on the holding information.
    Type: Application
    Filed: May 20, 2013
    Publication date: December 5, 2013
    Inventors: Yonosuke AOKI, Katsuhito FUJINAMI
  • Patent number: 8587230
    Abstract: A power tool includes a brushless DC motor housed inside a tool housing, an input unit, and a control unit. The motor includes a rotor, a stator, and at least one sensor positioned to sense a state of the rotational position of the rotor inside the stator. A control unit controls commutation of the motor through a series of power switches coupled to the power supply. The control unit receives a current sensor state from the sensor and a user-selected speed from the input unit and determines whether the motor has reversed direction using the user-selected speed and the current sensor state. The control unit disables commutation of the motor if the motor has reversed direction until a proper current sensor state is received from the sensor.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: November 19, 2013
    Assignee: Black & Decker Inc.
    Inventors: Pradeep M. Pant, James Goble
  • Patent number: 8587231
    Abstract: A power tool includes a housing, a brushless DC motor housed inside the housing, a power supply, a control unit, and an input unit such as a trigger switch actuated by a user. The control unit controls the commutation of the motor through a series of power switches coupled to the power supply. The control unit initiates electronic braking of the motor after occurrence of a condition in the input unit, such as trigger release or reduced speed, indicative of the power tool shut-down. A mechanism is provided to power the control unit for a predetermined amount of time after the detection of the condition from the input unit in order to complete the electronic braking of the motor.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: November 19, 2013
    Assignee: Black & Decker Inc.
    Inventor: Pradeep M. Pant
  • Patent number: 8579041
    Abstract: A safety apparatus for a portable tool having an internal combustion engine has at least one accelerometer providing a measurement of an acceleration of the portable tool in at least one plane or axis. An electronic controller is connected to an output of the accelerometer so as to receive analog or digital information. A generator is driven by the internal combustion engine so as to supply power to the accelerometer. A management card processes the analog or digital information so as to activate the system acting on an ignition exciter box so as to nearly instantaneously stop the internal combustion engine when the acceleration of the portable tool exceeds a predetermined level.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: November 12, 2013
    Assignee: Pellenc (Societe Anonyme)
    Inventor: Roger Pellenc
  • Patent number: 8579042
    Abstract: A battery device is constituted by connecting such cell assemblies in parallel as each includes: a first cell group having a plurality of cells connected in series; a housing container for housing the first cell group; current detector housed in the container for detecting a current to flow through the first cell group; a switching element connected with the first cell group for turning ON/OFF the current to flow through the first cell group; and a controller for controlling the ON/OFF of the switching element in response to the output signal of the current detector.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: November 12, 2013
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Hiroyuki Hanawa, Kiyoshi Kato, Kazuhiko Funabashi, Katsuhiro Oomori
  • Patent number: 8568066
    Abstract: A drilling machine, in particular a core hole drilling machine, having a mount on which an electromagnet is provided for attachment to a metal part on which a drilling unit is supported in displaceable fashion, wherein the drilling unit has a housing that accommodates an electric motor for driving a tool, is provided. There is provided a controller having at least one switch for switching on and off the electric motor and the electromagnet. The controller includes an operating and supervisory panel that is supported on an end of the housing opposite the tool. The switch for switching on and off the electromagnet and for switching off the electric motor is designed so that in the activated condition of the electric motor any operation of the controller will first cause the electric motor to be switched off before the electromagnet can be switched off.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: October 29, 2013
    Assignee: C. & E. Fein GmbH
    Inventor: Martin Beichter
  • Patent number: 8555997
    Abstract: An improved method is provided for controlling a power tool having a rotary shaft. The method includes: disposing an inertial mass in a housing of the power tool, such that the inertial mass is freely rotatable about an axis of rotation which is axially aligned with the rotary shaft; monitoring rotational motion of the power tool in relation to the inertial mass during operation of the power tool; and activating a protective operation based on the rotational motion of the power tool in relation to the inertial mass.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: October 15, 2013
    Assignee: Black & Decker Inc.
    Inventors: David A. Carrier, Daniel Puzio, Robert Bradus
  • Publication number: 20130264084
    Abstract: Improved techniques for avoiding and remediating connector-related stripping and other material damage are provided. In some aspects, specialized drive heads and systems are provided in conjunction with sensors for detecting proper distance characteristics and contact orientations (a.k.a., “seating”) with connectors, which, upon sensing improper seating, reduce, reverse-pulse or otherwise alter or remove power. The specialized driver heads may include reverse-grip members that pull the driver-head into the seated position. In other aspects, multiple-section connector sets are included, which may be self-tightening, and create detectable conditions of potential tightening energy being expended and/or loosening occurring, allowing an external sensor to sense such a condition and identify a connector that has loosened, slipped, or may be in need of recharging or tightening. A specialized connector head may selectively break away before stripping and thereby expose a stronger, secondary driver head.
    Type: Application
    Filed: April 6, 2012
    Publication date: October 10, 2013
    Inventor: Christopher V. Beckman
  • Publication number: 20130255980
    Abstract: A controller in a cordless power tool is configured to electronically read an identifier (e.g., a battery characterizing resistor) in a battery and identify the battery characteristics that is being powered. The controller can also define the suitable performance or output parameters of the tool for an identified tool type using a defined electronic library or menu of different tool types that is correlated to associated operational profiles.
    Type: Application
    Filed: November 4, 2011
    Publication date: October 3, 2013
    Applicant: Ingersoll-Rand Company
    Inventors: John J. Linehan, Daniel Becker, Joshua Odell Johnson
  • Patent number: 8544559
    Abstract: A portable power tool having a housing with a rotation motor for powering a working implement, wherein sensors are provided to indicate the motor speed and the power supply, and a programmable evaluation unit is arranged to compare indicated speed and pressure values with stored limit values, and to accumulate the total operation time of the power tool and compare that with preset time limits for tool service intervals, and an optical information unit is provided on the housing to indicate whether those stored limit values have been reached.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: October 1, 2013
    Assignee: Atlas Copco Industrial Technique Aktiebolag
    Inventors: John Robert Christian Friberg, Anders Urban Nelson
  • Publication number: 20130219725
    Abstract: A cutting tool includes a housing and a pair of cutting blades at least partially extending from the housing. At least a first of the cutting blades is movable. The cutting tool also includes a drive mechanism including a cam and a ratchet mechanism. At least a portion of the ratchet mechanism is drivably coupled to the first cutting blade. The cutting tool further includes a motor for providing torque to the cam to actuate the ratchet mechanism.
    Type: Application
    Filed: April 2, 2013
    Publication date: August 29, 2013
    Inventor: Milwaukee Electric Tool Corporation
  • Publication number: 20130206434
    Abstract: An electric machine tool includes a first actuating device and a second actuating device. The second actuating device is arranged at a distance from the first actuating device. The first actuating device is mechanically connected to the second actuating device by a switching connector which is configured to be loaded in tension only.
    Type: Application
    Filed: June 15, 2011
    Publication date: August 15, 2013
    Applicant: Robert Bosch GmbH
    Inventor: Willy Braun
  • Patent number: 8505649
    Abstract: A power (1) tool including a driven member (15) that is operable to grip and drive at least one working element (4), drive means (25) operable to drive the driven member, the power tool being operable in either a working mode in which the driven member is driven to enable the working element to perform work, or an adjustment mode in which the driven member is adjusted to grip or release the working element, torque control means (7) controlling the torque produced by the drive means, the torque control means being operable to render the drive means inoperable when the torque exceeds a pre-determined level, the torque control means having an adjustment setting (17) which must be selected to enable the power tool to operate in an adjustment mode whereby the adjustment setting corresponds to a relatively low level of torque.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: August 13, 2013
    Assignee: Demain Technology Pty Ltd.
    Inventors: David Leigh Scrimshaw, Benjamin Luke Van der Linde, Paul Francis Connor
  • Patent number: 8505647
    Abstract: An effective technique for detecting several load conditions different in presence or absence and magnitude of load applied to a tool bit is provided in a hand-held tool. A hand-held tool 101 performs a predetermined operation while pressing a tool bit 119 mounted in a front end region of a tool body 103 against a workpiece. A plurality of detecting sensors 161 of different kinds detect several load conditions different in presence or absence and magnitude of load applied to the tool bit 119. The hand-held tool 101 includes at least one of an indicating device 171 which indicates the load conditions based on a result detected by the detecting sensors 161, and a driving control device 135 which controls driving of the tool bit 119 based on the detected result.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: August 13, 2013
    Assignee: Makita Corporation
    Inventors: Yoshihiro Kasuya, Masanori Furusawa, Hajime Takeuchi, Masahiro Watanabe
  • Publication number: 20130192859
    Abstract: An automatic drilling system includes a top drive comprising a proximity sensor disposed in a housing thereof. A portion of the top drive is coupled to elevators through load transfer springs such that axial loading applied to the elevators results in relative movement between a link load collar and a load ring. A proximity sensor is mounted such that the relative movement results in a change in signal output thereof. A processor is in signal communication with the proximity sensor and is configured to operate a drive shaft motor. The processor is configured to disable rotation of the motor when the relative movement is indicative of axial loading on the elevators.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 1, 2013
    Inventors: Keith A. Holiday, Todd Mironuck, Paul Nicholson, Dan Flaherty
  • Publication number: 20130186659
    Abstract: An improved method is provided for operating a power tool. The method includes receiving an input control variable from an input unit; receiving at least one tool parameter relating to the power tool; determining a derivative of the input control variable; selecting one of a plurality of control profiles based on the control input variable, the derivative of the input control variable, and the tool parameter, 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.
    Type: Application
    Filed: March 12, 2013
    Publication date: July 25, 2013
    Applicant: BLACK & DECKER INC.
    Inventor: BLACK & DECKER INC.
  • Publication number: 20130186661
    Abstract: A power tool including: a housing configured to support an end bit, a motor accommodated in the housing, a transmission mechanism, a trigger switch, a load judging unit, and a motor stop control unit. The transmission mechanism transmits a rotational force of the motor to the end bit. The trigger switch is configured to switch between instructions to the motor. The instructions include a rotation instruction for providing a rotation state of the motor and a stopping instruction for providing a stopping state of the motor. The load judging unit judges whether or not a load is applied to the end bit during rotation of the motor. The motor stop control unit stops the rotation of the motor irrespective of the instructions of the trigger switch when the load judging unit judges that no load is applied to the end bit and a period of a non-load state exceeds a predetermined time period.
    Type: Application
    Filed: September 13, 2011
    Publication date: July 25, 2013
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Takahiro Okubo, Kazutaka Iwata
  • Publication number: 20130186666
    Abstract: A rotary tool is provided with a mode selecting part that selects one operating mode from a predetermined plurality of operating modes when a mode switching button is pressed. The plurality of operating modes include: a first auto stop mode where a motor rotates only for a first time period after an impacting operation is detected; and a second auto stop mode where the motor rotates only for a second time period which is shorter than the first time period after the impacting operation is detected.
    Type: Application
    Filed: January 9, 2013
    Publication date: July 25, 2013
    Applicant: MAX CO., LTD.
    Inventor: MAX CO., LTD
  • Publication number: 20130186660
    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 second derivative of the input control variable; selecting one of a plurality of control profiles based on the control input variable and the second 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.
    Type: Application
    Filed: March 12, 2013
    Publication date: July 25, 2013
    Applicant: BLACK & DECKER INC.
    Inventor: Black & Decker Inc.