Handle Type Holder Patents (Class 173/162.2)
  • Patent number: 11097391
    Abstract: A spindle arrangement for a machine tool, comprising a spindle for driving a tool and at least one actuator for exciting vibration of the tool, characterized in that the spindle arrangement is provided with a compensation device for at least partly compensating the inertia forces produced by the vibration excitation in the spindle region.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: August 24, 2021
    Assignee: TECHNISCHE UNIVERSITÄT WIEN
    Inventors: Friedrich Bleicher, Christoph Habersohn, Martin Fuchs
  • Patent number: 11084157
    Abstract: A work tool includes a motor, a driving mechanism, a housing, a handle, a detecting mechanism and an elastic support part. The detecting mechanism is configured to detect information corresponding to an operating state of the work tool. The elastic support part supports the detecting mechanism so as to be movable relative to the housing in at least two of a front-rear direction, an up-down direction and a left-right direction. The elastic support part includes at least one elastic member disposed between the detecting mechanism and the housing. The elastic support part has respectively different spring constants in the at least two directions.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: August 10, 2021
    Assignee: MAKITA CORPORATION
    Inventors: Kiyonobu Yoshikane, Yoshitaka Machida, Taro Hisano, Hirokatsu Yamamoto
  • Patent number: 11072130
    Abstract: The invention relates to a hand-guided device (10) for setting a setting element (12) in a component. The device comprises a handle (14) for holding the device, a carriage (34), which can be moved in relation to the handle and which bears a rotatably supported drive shaft (46), at one end of which a holder for the setting element is formed, a force accumulator (44), which is arranged between the handle and the carriage and which serves to store a defined advancing force, with which the force limiter can be loaded by means of a relative motion between the handle and the carriage, and a force limiter (64) for limiting the advancing force stored in the force accumulator. The force accumulator is designed to apply the stored advancing force to the setting element by means of the carriage. The invention further relates to a method for manually setting a setting element by means of said device.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: July 27, 2021
    Inventors: Reinhard Zoll, Ralf Wiethoff, Jochen Hartmann
  • Patent number: 11052529
    Abstract: The invention relates to an electrical work apparatus including an apparatus housing having an electric motor for driving a work tool, a control unit for putting the electric motor into operation, a handle housing having at least one handle for guiding the work apparatus, and a receiving cavity, realized in the handle housing, having an insertion opening for a battery pack for operating the electric motor. For the purpose of decoupling the battery pack in respect of vibration, the handle housing, together with the receiving cavity for the battery pack, is decoupled from the apparatus housing via one and the same antivibration element. A vibration gap is realized between the apparatus housing and the handle housing, wherein the antivibration element at least partly bridges the vibration gap.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: July 6, 2021
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Florian Hoche, Johannes Menzel, Marc Schmid
  • Patent number: 10888988
    Abstract: This disclosure describes a power tool comprising a housing, a motor received in the housing and an output shaft driven by the motor and used for mounting a cutting tool. The housing comprises a first head housing and a second head housing. The first head housing is used for receiving part of the output shaft. A maximal length of the first head housing along an axial direction of the output shaft is L. A plane where the axis of the output shaft is positioned is defined as a middle plane. N vibration damping elements are disposed between the first head housing and the second head housing and, on at least one side of the middle plane, each vibration damping element comprises a vibration damping part contacting with the first head housing and the second head housing. A sum of the lengths of the N vibration damping parts along the axial direction of the output shaft is larger than or equal to 0.2L and smaller than or equal to L.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: January 12, 2021
    Assignee: Positec Power Tools (Suzhou) Co., Ltd
    Inventors: Hongfeng Zhong, Xiaoli Pang, Yu Wu, Jingtao Xu, Yichun Ma
  • Patent number: 10890229
    Abstract: A power tool includes a housing, an auxiliary handle, and a vibration damping assembly. The auxiliary handle includes a front end and a gripping portion. The vibration damping assembly includes a mass member and an elastic element. The auxiliary handle further includes an end cap arranged at a rear end of the gripping portion where the rear end is far away from the housing relative to a front end of the gripping portion. An accommodating cavity for accommodating the vibration damping assembly is formed around the gripping portion. The elastic element is arranged between a mass member and a cavity wall of the accommodating cavity. A ratio of a natural frequency W1 of the vibration damping assembly to a rotation frequency W2 of an output shaft in rotation is greater than or equal to 0.7 and less than or equal to 1.3.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: January 12, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventor: Rui Zhang
  • Patent number: 10751868
    Abstract: It is an object of the invention to provide rational structure for vibration proofing in hammering operation. A driving motor 110 and a striking mechanism 140 are provided in a first body element 101a, and a handle 109 and a battery mounting part 160 are provided in a second body element 101b. The first and second body elements 101a, 101b are moved with respect to each other via a biasing member 181 when vibration is caused by driving of the striking mechanism 140. Further, a first region 100a close to the striking mechanism 140 forms a long-distance moving region 200 in which the first and second body elements 101a, 101b move a longer distance in a longitudinal direction than in the second region 100b less close to the striking mechanism 140.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: August 25, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Yoshiro Tada, Masanori Furusawa, Kei Watanabe
  • Patent number: 10688644
    Abstract: A power tool includes a motor, a housing, a battery mounting part, and a battery protection part. The battery mounting part is provided to the housing on an opposite side from a working axis across the motor in an extending direction of a rotation axis of the motor. The battery mounting part is configured such that one end portion of at least one battery is mounted to the battery mounting part and an opposite end portion of the at least one battery in the extending direction of the rotation axis is exposed from the housing. The battery protection part is provided to an outer surface portion of the housing and configured to protect at least one corner region of the opposite end portion of the at least one battery against external force when the one end portion is mounted to the battery mounting part.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: June 23, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Hitoshi Iida, Masanori Furusawa, Kei Watanabe, Takafumi Kotsuji, Keisuke Yamada
  • Patent number: 10661425
    Abstract: An electric power tool includes an electric motor, an output shaft, a housing that houses the electric motor and at least part of the output shaft, and a reduction gear drivingly arranged between the electric motor and the output shaft. The reduction gear includes a load sensitive part that is rotatable in response to reaction forces created during operation of the power tool. A torsion spring, arranged to counteract any such rotation, includes a first end and a second end, the first end including a first connective interface that is rotationally lockable to a connective interface of the load sensitive part, and the second end including a second connective interface that is rotationally lockable with respect to at least one of the housing and the motor. At least one of the first and the second connective interfaces includes an element for prohibiting axial movement between the connected parts.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: May 26, 2020
    Assignee: ATLAS COPCO INDUSTRIAL TECHNIQUE AB
    Inventor: Karl Göran Johansson
  • Patent number: 10646986
    Abstract: An impact tool includes a mechanism part, a main-body housing and a grip housing. The mechanism part strikes a tool bit. The main-body housing holds the mechanism part therein. The grip housing is continuously provided to a rear portion of the main-body housing. One end portion of the grip housing is displaceably connected to the main-body housing through an elastic member, and the other end portion of the grip housing is rotatably connected to the main-body housing through a rotary joint. A center of the rotary joint is disposed on a leading end side of the impact tool with respect to a center of the elastic member, when viewed in a strike direction of the impact tool.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: May 12, 2020
    Assignee: MAX CO., LTD.
    Inventors: Akira Teranishi, Kazunobu Yoshimura, Kouichirou Morimura
  • Patent number: 10549414
    Abstract: The invention relates to an impact machine which is adapted to perform a hammering operation on a surface or an object to be worked upon. In particular, a vibration reduction arrangement is attached to the housing and comprises a moveable counterweight, interacting with a motion reversing arrangement having a non-linear spring characteristics, such that the motion of the counterweight can be brought into a counter-acting movement in relation to the vibrations in the housing of the hammering element thus substantially reducing the vibrations. A spring action arrangement is arranged inside said counter weight, the counter weight being movable a first distance without actuating the spring action arrangement, and the counterweight comprises displaceable projecting member for actuating the spring action arrangement.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: February 4, 2020
    Assignee: SWEREA IVF AB
    Inventor: Hans Lindell
  • Patent number: 10537984
    Abstract: A side handle for a hand-operated power tool includes a handle rod disposed along a handle axis and a fastening mechanism, where the side handle is releasably fastenable to the hand-operated power tool by the fastening mechanism. The fastening mechanism includes a tensioning band that engages around a fastening axis and a tensioning mechanism. The tensioning mechanism has a pull rod that is anchored to the tensioning band and is displaceable along the handle axis and a tensioning wheel that is rotatable about the handle axis and engages in an external thread of the pull rod. A damper connects the handle rod to the fastening mechanism and includes a leaf spring with a longitudinal side oriented in an inclined manner to the fastening axis where the leaf spring has a slot. A splint is fastened to the pull rod and engages in the slot.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: January 21, 2020
    Assignee: Hilti Aktiengesellschaft
    Inventors: Adrian Steingruber, Oliver Ohlendorf
  • Patent number: 10493611
    Abstract: The hand-held power tool has a tool holder (2) for holding a tool (4) along a working axis (12). A hammer mechanism (6) has a striker (15) that is moved periodically along the working axis at an impact rate. A drive control (18) of the hammer mechanism (6) sets the impact rate to a set point value. A vibration absorber (19) has an oscillator (21) that moves along the working axis (12) about a resting position and one or multiple springs (20) that drive the oscillator (21) back into the resting position. A calibration phase comprises the following steps: detection of an acceleration using the acceleration sensor (24); determination of a minimum of the acceleration by varying the impact rate in a range of between 90% and 110% of the set point value; and adjusting the set point to the impact rate associated with the ascertained minimum.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: December 3, 2019
    Assignee: Hilti Aktiengesellschaft
    Inventors: Rainer Ontl, Damir Cehajic, Christoph Dieing
  • Patent number: 10322449
    Abstract: A hammer includes a jacket, which includes an inner chamber, an inlet circuit for entry of compressed air, and an outlet circuit for exit of compressed air. The hammer further includes a motion mechanism, for generating a vibratory motion under the action of compressed air; and a punch or beater, connected to the motion mechanism, for coming into contact with the casting to be de-cored, forming a first end of the hammer. The inlet circuit includes an inlet connector for connecting the hammer to a compressed-air circuit; the inlet connector being located at a second end of the hammer, opposite to the end where the punch or beater is located. The outlet circuit has an outlet connector for connecting the hammer to an air recovery circuit. The outlet connector is located at the second end of the hammer, in proximity to the inlet connector.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: June 18, 2019
    Assignee: O.M.LER 2000 S.R.L.
    Inventor: Fabrizio Lerda
  • Patent number: 10286537
    Abstract: A portable power tool is disclosed. The tool has a tool holder in which a tool can be moveably inserted on a working axis in a striking direction. A percussion mechanism has a striker coupled via a pneumatic chamber to an exciter moved periodically along the working axis and an intermediate striker arranged in the striking direction downstream from striker. The intermediate striker is guided in a slide bearing with a tolerance coaxially to the working axis. The intermediate striker has a ring-shaped bead. A hollow-cylindrical backstop is arranged in the striking direction upstream from the bead. The backstop is moveably guided on a sliding surface with radial play along working axis. The radial play is at least three times as large as a tolerance of the guide of the intermediate striker in the slide bearing.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: May 14, 2019
    Assignee: Hilti Aktiengesellschaft
    Inventors: Olaf Koch, Theo Kiesel, Helene Kaps, Matthias Keith
  • Patent number: 10232479
    Abstract: A power tool includes a housing, a motor positioned substantially within the housing, a drive mechanism supported by the housing and coupled to the motor, a battery pack electrically coupled to the motor, and an isolation system. The isolation system includes an interface member positioned substantially within the housing. The interface member receives a portion of the battery pack to electrically couple the battery pack to the motor. The isolation system also includes a plurality of isolators coupled between the housing and the interface member to isolate the battery pack from the housing during operation of the power tool.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: March 19, 2019
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Troy C. Thorson, Jeffrey M. Wackwitz, Andrew J. Weber
  • Patent number: 10232500
    Abstract: The invention relates to an impact machine (100, 200) which is adapted to perform a hammering operation on a surface or an object to be worked upon. In particular, a vibration reduction arrangement (140, 240) is attached to the housing (105, 205, 305, 405) and comprises a movable counterweight, interacting with a motion reversing arrangement having a non-linear spring characteristics, such that the motion of the counterweight can be brought into a counter-acting movement in relation to the vibrations in the housing (105, 205, 305, 405) of the hammering element (110, 210, 310, 410) thus substantially reducing the vibrations.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: March 19, 2019
    Assignee: SWEREA IVF AB
    Inventor: Hans Lindell
  • Patent number: 10137562
    Abstract: A power tool comprising: a housing; a handle having two ends, the first being moveably mounted to the housing via a first mounting assembly, the second being moveably mounted to the housing via a second mounting assembly; a biasing mechanism connected between the housing and handle; wherein at least one of the mounting assemblies comprises first and second parts, one being mounted on the housing and the other mounted on the one end of the handle, the first part comprising a passageway, the second comprising a mount and a rod, the rod having a first end and a shaft with a longitudinal axis, the first end being attached to the mount using a bayonet connection, the shaft being located in and capable of axially sliding within the passageway to enable the end of the handle to move towards or away from the housing.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: November 27, 2018
    Assignee: Black & Decker Inc.
    Inventors: Ana-Maria Roberts, Andreas Friedrich
  • Patent number: 10071468
    Abstract: A hand-power tool includes at least one oscillation-damping device that has at least one damping spring, a damping mass, and a mechanism housing. The oscillation-damping device has at least two retaining parts that at least partly enclose the damping mass.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: September 11, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Alex Kuhnle, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
  • Patent number: 10046451
    Abstract: A power tool includes a housing and a handle having two ends moveably mounted to the housing via respective mountings, at least one mounting comprising a passageway formed in one end of the handle and a rod attached at one end to the housing. The rod's shaft axially slides within the passageway, enabling the handle end to move relative to the housing. A cavity within the handle end adjacent the passageway receives the rod, which has a second end within the cavity. A flange mounted adjacent the rod's other end within the cavity, unable to pass through the passageway, moves within the cavity relative to the passageway as the handle's end moves relative to the housing. A biasing mechanism within the cavity, between an internal wall of the cavity and the second end of the rod, biases the flange towards the passageway, and the handle end away from the housing.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: August 14, 2018
    Assignee: Black & Decker Inc.
    Inventors: Ana-Maria Roberts, Andreas Friedrich
  • Patent number: 10040187
    Abstract: A handheld oscillation machine tool has support devices for maintaining a spacing between internal parts and an outer housing. The support devices are arranged in pairs of first and second support devices. One support device in each pair has a concave circular surface, and the other has an opposed convex circular surface. Elastically deformable damping elements are arranged between the pairs of support devices. The damping elements are deformed from original flat conditions under forces applied by the support devices, and have concave and convex circular surface adjoining the opposed concave and convex circular surfaces at the support devices.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: August 7, 2018
    Assignee: C. & E. FEIN GMBH
    Inventors: Achim Hess, Uwe Früh, Jürgen Blickle, Fabian Bek
  • Patent number: 9999967
    Abstract: A technique for making a handle vibration-proof while avoiding size increase is provided in an impact tool. The impact tool has a striking mechanism part for driving a tool bit in its axial direction, a motor for driving the striking mechanism part, a tool body housing the motor and striking mechanism part, an outer shell housing covering part of the tool body, a handle that is integrally formed with the outer shell housing and extends transversely to the axial direction, a first handle end portion formed on one extending end of the handle, a second handle end portion formed on the other extending end of the handle, a first elastic element that connects the first handle end portion and tool body for relative movement in the axial direction, and a second elastic element that connects the second handle end portion and tool body for relative movement in the axial direction.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: June 19, 2018
    Assignee: MAKITA CORPORATION
    Inventors: Masanori Furusawa, Yoshihiro Kasuya, Hajime Takeuchi
  • Patent number: 9993915
    Abstract: A tool includes a housing; a handle having first and second ends mounted thereto via respective mountings, and a biasing mechanism connected between the housing and handle. At least one mounting comprises parts mounted on the housing and end of the handle respectively, one part comprising a support, the other comprising a pin having a longitudinal axis, located in the support and capable of moving linearly or being rotated therein so the handle may move accordingly. The pin is in a passage of the support having larger length than width, allowing free movement either rotationally about its axis or linearly along the length for rotational or linear movement of the end of the handle. The width size varies along the passage, providing a convex surface along at least part of the length, engageable by the pin's side to enable pivoting within the passage about an axis parallel to the length.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: June 12, 2018
    Assignee: Black & Decker Inc.
    Inventors: Ana-Maria Roberts, Andreas Friedrich
  • Patent number: 9815185
    Abstract: A hammer drill (101) comprises a main body (103) which houses a driving motor (110) and a driving mechanism and a handle (109) which is movable to the main body (103). Further, a coil spring (160) which biases the handle (109) is provided. In a state that the coil spring (160) biases the handle (109), the handle (109) is moved against the main body (103) in a longitudinal direction of a hammer bit (119) and vibration transmission from the main body (103) to the handle (109) is prevented.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: November 14, 2017
    Assignee: MAKITA CORPORATION
    Inventor: Yoshitaka Machida
  • Patent number: 9808925
    Abstract: An impact tool includes a casing (13) supporting a tip tool (12), a piston (41) provided in the casing (13), an electric motor (11) provided in the casing (13), a motion converting mechanism (45) provided in the casing (13), and a vibration reducing mechanism (47) provided in the casing (13). The vibration reducing mechanism (47) has a supporting member, which is swingable with using a fixing position (J) as a supporting point and a weight (49) attached to a free end side of the supporting member. In a plane including a center line (C), the gravity center (H) of the weight (49) and the gravity center (G) of the casing (13) are disposed at mutually different locations, and the fixing position (J) is disposed on the side of the gravity center (G) relative to the center line (C).
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: November 7, 2017
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Hideki Yamada, Takahiro Ookubo, Satoshi Abe
  • Patent number: 9725009
    Abstract: An electric motor is mounted on a body. The electric motor is driven by an electric driving unit. The electric driving unit is supported to the body by a vibration-proofing member. A natural frequency of a spring-mass system including the vibration-proofing member and the electric driving unit is higher than a frequency of a main component in vibration generated in the body during an operation.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: August 8, 2017
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Shuntaro Adachi
  • Patent number: 9561599
    Abstract: A hand-held work implement comprises a housing, at least one tool and a combustion engine for driving the tool. The combustion engine has a cylinder and has a piston which drives a crankshaft in rotation about an axis of rotation. The crankshaft drives a fan impeller. The work implement has a handle unit with a handle bar and has an engine unit, these being connected to one another via anti-vibration elements. The combustion engine has a transverse plane which encompasses the cylinder longitudinal axis and which runs parallel to the axis of rotation of the crankshaft. The transverse plane divides the work implement into a front region, in which a section of the tool that projects out of the housing is arranged, and a rear region. The fixing of the anti-vibration element to the cylinder is realized in the front region.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: February 7, 2017
    Assignee: ANDREAS STIHL AG & CO. KG
    Inventors: Jan Kurzenberger, Jens Knauβ, Johannes Menzel, Sebastian Friedrich
  • Patent number: 9505120
    Abstract: A power tool includes a housing including: a body part having a substantially cylindrical shape and extends in a front-rear direction; and a handle part connected to the body part. The body part includes: a driving source; a power transmission mechanism part configured to transmit a driving force of the driving source; and a tip tool holding part to which the driving force of the driving source is transmitted from the power transmission mechanism part. The handle part includes a switch. A top part protruding from a surface of the handle part is formed on a side surface of the handle part along a longitudinal direction of the handle part. At least a portion of the top part is arranged at a position deviating rearwards from a center of the handle part in the front-rear direction.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: November 29, 2016
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshiki Aoki, Masato Sakai, Masanori Okada
  • Patent number: 9509193
    Abstract: A motor actuator of the present invention includes: a motor including an outer shell portion internally provided with a rotor that rotates as a unit with a rotation shaft, and supported portions respectively provided at both axial direction end portions of the outer shell portion; a power supply terminal connected to the motor; a case internally housing the motor, and including support portions; a resilient member fitted interposed between each of the support portions and the supported portions; and an insulating member disposed between the outer shell portion and the power supply terminal, nipped between an outer peripheral portion of the outer shell portion and the resilient member, and formed with a cut-out hole at a location to the radial direction outer side of a location in contact with the resilient member, and at the radial direction inner side of an outer peripheral portion of the outer shell portion.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: November 29, 2016
    Assignee: ASMO CO., LTD.
    Inventors: Naohiko Shibata, Hiroto Inoue
  • Patent number: 9358677
    Abstract: A hand-power tool includes at least one oscillation-damping device that has at least one damping spring and a damping mass. The hand-power tool also includes a drive mechanism and a mechanism housing. The mechanism housing has a housing cover which is provided for closing a chamber in which the drive mechanism lies, and the housing cover has at least one fixing mechanism that at least partially fixes the oscillation-damping device in at least one operating state.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: June 7, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Axel Kuhnle, Matthias Tauber, Juergen Bochert, Carsten Diem, Willy Braun, Christian Wiedemann, Joerg Kaiser, Patrick Heinen, Roger Hahn, Thomas Speda
  • Patent number: 9308636
    Abstract: A rotary power tool includes a housing, a tool element defining a working axis, and a handle coupled to the housing. The handle is movable along a first axis parallel with the working axis between a retracted position and an extended position. The handle includes an upper portion and a lower portion. The rotary power tool also includes an upper joint coupling the upper portion of the handle to the housing and a lower joint coupling the lower portion of the handle to the housing. Each of the upper and lower joints includes a rod extending into the handle and a biasing member disposed between the handle and the housing. The biasing member is operable to bias the handle toward the extended position. Each of the upper and lower joints is operable to attenuate vibration transmitted along the first axis and along a second axis orthogonal to the first axis.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: April 12, 2016
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventor: Andrew R. Wyler
  • Patent number: 9277926
    Abstract: A drill sleeve includes a lower end that engages a bone being drilled with a drill bit of a drill during an orthopedic procedure, an upper end that is movable with respect to the lower end, and a fluid damper between the upper and lower ends for resisting movement of the upper end with respect to the lower end and which may reduce a distance at which a drill bit can plunge through a back side of the bone by increasing resistance to drill movement at occurrence of plunge through the back of the bone. The drill sleeve may include measurement scale and a lock that prevents relative motion of the upper and lower ends after the bone has been drilled for evaluating a position of a depth indicator with respect to the measurement scale that corresponds to a depth of the bore in the bone.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: March 8, 2016
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Kenneth O. Xu, Austin J. Crow, Joshua M. Kolz, Sarah R. Sandock, John G. Renfrew
  • Patent number: 9242363
    Abstract: A side-handle for a hand-held power tool includes a gripping element and a fastener for fastening the side handle to the hand-held power tool. The gripping element and the fastening means can be pivoted with respect to each other around a rotational axis. This rotational axis runs perpendicular to a longitudinal axis of the gripping element and runs through an end area of the gripping element facing away from the fastener.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: January 26, 2016
    Assignee: Hilti Aktiengesellschaft
    Inventors: Franz Moessnang, Markus Hartmann, Michael Kurz
  • Patent number: 9168649
    Abstract: A hammer-drill including a body in which is mounted a motor and a hammer mechanism which is driven by the motor; a tool holder mounted on the front of the body and which is capable of holding a cutting tool, the hammer mechanism being capable of imparting impacts to the cutting tool, when held by the tool holder; a rear handle, moveably mounted onto the rear of the body via at least one movement control mechanism and which is capable of moving towards or away from the body; a biasing mechanism which biases the rear handle away from the body.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: October 27, 2015
    Assignee: Black & Decker, Inc.
    Inventors: Frantisek Harcar, Andreas Friedrich
  • Patent number: 9168652
    Abstract: A hand-held power tool has a housing including at least two separate and interconnected housing parts, wherein one housing part forms a handle housing for holding and guiding the hand-held power tool. The handle housing includes a handle and a fastening component. The fastening component is connected to the other housing part and to the handle, and a vibration reduction element is arranged between the fastening component and the handle.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: October 27, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Joachim Schadow, Joerg Maute, Manfred Lutz
  • Patent number: 9073197
    Abstract: A vibration reduction handle includes: a handle body attachable to a disk grinder; a grip portion which extends in a first direction defined as a longitudinal direction of the grip portion and is pivotably movable in a second direction crossing the first direction; and a first vibration reduction rubber and a second vibration reduction rubber which are respectively provided between the handle body and the grip portion.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: July 7, 2015
    Assignee: MAKITA CORPORATION
    Inventor: Ken Yamauchi
  • Patent number: 9044850
    Abstract: A power tool includes a motor having an outwardly extending rotor that defines a drive axis, a housing surrounding the motor, and a gearcase that includes a drive train coupled to the rotor and configured to drive a tool output. The gearcase includes a proximal end and an opposite distal end that is exposed to the outside of the tool forward of the housing. The gearcase includes respective locking elements spaced around the periphery of the gearcase proximal end. A motor mount includes spaced apart locking elements that are configured to engage with respective gearcase locking elements. The proximal end portion of the gearcase is adapted to make contact with the motor mount between the locking elements and then rotate such that the gearcase locking elements engage the motor mount locking elements.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: June 2, 2015
    Assignee: Ingersoll-Rand Company
    Inventors: Christopher Anthony Kokinelis, Justin Terrance Chellew, Timothy John Bok, Daniel Jay Becker
  • Publication number: 20150144367
    Abstract: The invention relates to a machine tool that can be guided manually and has an outer housing extending substantially along a longitudinal axis, which has a grip region which is provided for engaging and for guiding the machine tool by means of a hand of a user, comprising an electrical drive unit accommodated in said outer housing and a tool unit that is substantially mechanically uncoupled relative to the outer housing. The outer housing has a centre of mass that, with respect to the length of the outer housing, is arranged along the longitudinal axis in a section that extends toward the rear from the geometric centre of the outer housing.
    Type: Application
    Filed: April 22, 2013
    Publication date: May 28, 2015
    Inventors: Uwe Früh, Achim Hess, Jürgen Blickle
  • Publication number: 20150144368
    Abstract: A hammer drill includes a main body which houses a driving motor having a brush and a brush holder unit which holds the brush and switches a position of the brush, and a main handle which is movable to the main body. Further, a coil spring which biases the handle is provided. In a state that the coil spring biases the handle, the handle is moved against the main body in a longitudinal direction of a hammer bit and vibration transmission from the main body to the handle is prevented. Further, interference of a lever of the brush holder unit and the handle is prevented by a part of an opening formed on the handle.
    Type: Application
    Filed: November 26, 2014
    Publication date: May 28, 2015
    Inventor: Yoshitaka MACHIDA
  • Publication number: 20150129272
    Abstract: A power tool includes a tool operable to work on a workpiece, a drive mechanism coupled to the tool and operable to move the tool, a housing defining an interior, the drive mechanism disposed at least partially within the interior, and a handle having a first end and a second end. The first end is fixed to the housing and the second end is spaced apart from the housing to define a gap therebetween. An insert is fixedly attached to the housing and the second end to fill the gap. The insert is more flexible than the handle and the housing. The housing includes a first engaging portion and the handle includes a second engaging portion each engageable with the insert to substantially fixedly attach the insert to the housing and the handle, and the insert includes a third engaging portion, and a fourth engaging portion.
    Type: Application
    Filed: January 21, 2015
    Publication date: May 14, 2015
    Inventor: Brent Gregorich
  • Patent number: 9016672
    Abstract: The present invention concerns a handheld working tool comprising a motor part (10), a handle part (20) comprising a handle grip (21), and at least one first type antivibration element (30) arranged between said motor part (10) and said handle part (20), and which element (30) is adapted to isolate the handle part (20) from vibrations in the motor part (10). The working tool (1) is characterized in that it further comprises at least one second type antivibration element (40) arranged adjacent to the first type antivibration element (30). The at least one second type antivibration element (40) is adapted to, when in an active state, prevent vibrations in the motor part (10) from being transferred to the handle grip (21). The second antivibration element (40) is in the active state when the handle grip (21) is loaded during operation of the working tool (1).
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: April 28, 2015
    Assignee: Husqvarna AB
    Inventors: Thomas Englund, Pär Martinsson
  • Publication number: 20150107865
    Abstract: An auxiliary handle for removable connection with a housing of an electric tool having a first engaging portion, a second engaging portion and a third engaging portion. The auxiliary handle includes a handling portion, a fixing portion and a locking portion. The handling portion enables the user to handle the auxiliary handle and operate the locking portion. The fixing portion is engaged with the first engaging portion and the second engaging portion so as to connect the auxiliary handle to the housing. The locking portion interacts with the third engaging portion so as to lock the auxiliary handle.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 23, 2015
    Inventors: Cuihua Chen, Shubin Tong
  • Patent number: 9010452
    Abstract: A multi-segmented handle built in tiers, with vibration isolators separating one tier from the other tiers. The tier that connects via isolators with a machine base is the one to which the other tiers are attached. The tiers shape is circular or a series of circles to diminish the shock wave and each tiers tubes are filled with a vibration dampening element turning the tier into a harmonic absorber. Each tier has attachments to accommodate the isolators for attaching one tier to another tier. The shapes that the tiers take are not limited to circular but includes all shapes, curved or straight and the isolators include all types of isolators.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: April 21, 2015
    Inventors: Susan J. Williamson, Glen E. Moore
  • Patent number: 9004191
    Abstract: The invention relates to a power tool, such as an impact drilling machine, impact screwdriver, saber saws, grinders, or the like, comprising a housing. In the housing, an electric motor and an electric or electronic module that is attached to holders in the housing, for example, an electric switch or electronics, are provided. Between the holders in the housing and the electrical or electronic modules, a vibration decoupling element is disposed.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: April 14, 2015
    Assignee: Marquardt GmbH
    Inventors: Jens Müller, Stephan Gasser
  • Patent number: 8991517
    Abstract: An impact tool includes a reaction force transmitting member, a first elastic member that biases the transmitting member forward, and a second elastic member that is pushed by the transmitting member and compressively deforms when the transmitting member moves rearward by receiving a striking reaction force caused when a tool bit strikes a workpiece, thereby cushioning the force. When the tool bit is pressed against the workpiece, the transmitting member is pushed by the tool bit and compresses the first elastic member, and comes in contact with the second elastic member in an uncompressed state, so that the transmitting member is placed in a predetermined working position in the longitudinal direction. When the transmitting member receives the striking reaction force in the working position, the transmitting member moves rearward in the axial direction of the tool bit and compressively deforms the second elastic member, thereby cushioning the striking reaction force.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: March 31, 2015
    Assignee: Makita Corporation
    Inventors: Yoshio Sugiyama, Hikaru Kamegai, Masanori Furusawa
  • Patent number: 8985236
    Abstract: A handheld power tool is disclosed. The handheld power tool has a drive oscillating along a working axis and a vibration damper. The vibration damper has a mass element suspended in a spring mechanism. The spring mechanism acts with a first spring stiffness and acts with a second spring stiffness. The first spring stiffness is different from the second spring stiffness.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: March 24, 2015
    Assignee: Hilti Aktiengesellschaft
    Inventors: Michael Wierer, Adrian Scherrer, Fabian Martin, Josef Althaus
  • Patent number: 8985235
    Abstract: According to one embodiment, there is provided an anti-vibration structure for a handle of a portable brush cutter, the structure including: a pole; an operation unit provided at a front portion of the pole; an engine provided and a lever device provided at a base portion of the pole; an attachment stay unit fixed to a middle portion of the pole, the attachment stay unit having an accommodation recess at each end thereof; an operation handle having a protrusion protruding from each end thereof; and anti-vibration materials sandwiched between the attachment stay unit and the handle main body in a left-right direction of the pole, so that one side of the anti-vibration material is accommodated in the accommodation recess while the protrusion is inserted in an open-groove formed on the other side of the anti-vibration material.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: March 24, 2015
    Assignee: Starting Industrial Co., Ltd.
    Inventors: Tetsuya Yamada, Shigemitsu Chigira
  • Patent number: 8967288
    Abstract: According to one embodiment, there is provided an anti-vibration structure for an operation lever of a portable brush cutter, in which a lever device includes: a main body through which a pole is inserted in an axial direction, the main body including protrusions protruding from both ends in the axial direction; support members provided on the pole to support the both ends of the main body such that the main body is separated from the pole, each support member including a recess; and anti-vibration materials accommodated in the recesses of the support members so as to be sandwiched between the support members and the main body in the axial direction, respectively, each anti-vibration material including a groove to which a respective one of the protrusions of the main body is inserted.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: March 3, 2015
    Assignee: Starting Industrial Co., Ltd.
    Inventors: Tetsuya Yamada, Shigemitsu Chigira
  • Patent number: 8966773
    Abstract: A power tool includes a tool operable to work on a workpiece, a drive mechanism coupled to the tool and operable to move the tool, and a housing defining an interior. The drive mechanism is disposed within the interior. A handle has a first end and a second end. The first end is fixed to the housing and the second end is spaced apart from the housing to define a gap therebetween. An insert is fixedly attached to the housing and the second end to fill the gap. The insert is more flexible then the handle and the housing.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: March 3, 2015
    Assignee: Techtronic Power Tools Technology Limited
    Inventor: Brent Gregorich
  • Patent number: 8960323
    Abstract: An improved vibration dampening system has been developed for handheld electrical power tools. The vibration dampening system includes a material that a controller selectively activates with an electrical current to increase the rigidity of the material and dampen random vibrations detected by the controller. The material is positioned between a foot member that helps support the tool against a work piece and both hand grips for the tool. Thus, the vibration dampening system reduces the impact of random vibrations on both hands of an operator.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: February 24, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Stephen C. Oberheim