Including A Motor Patents (Class 30/277.4)
  • Patent number: 11376678
    Abstract: A reciprocating saw includes a casing, a power assembly, a transmission assembly, a reciprocating assembly, a swing assembly, and a balance weight. The transmission assembly includes a first transmission member that is capable of being driven by the power assembly to rotate around a first axis. The swing assembly includes a floating support member configured to drive the reciprocating assembly to perform an orbital motion. The first transmission member is provided with a cam surface configured to be in contact with the floating support member to drive the floating support member to move in an up-and-down direction parallel to the first axis. The balance weight is provided with an escape opening, and the escape opening is disposed on a path on which the floating support member moves in the up-and-down direction.
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: July 5, 2022
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Jiang Li, Lai Liu, Feng Wang, Yang Zhou, Hao Gao
  • Patent number: 11311952
    Abstract: A reciprocating saw includes a housing defining a motor housing portion, and a motor positioned in the motor housing portion, the motor having a motor output shaft defining a rotational axis, and a motor activation switch within the motor housing portion and adjacent the motor. The reciprocating saw also includes a transmission is positioned downstream of the motor and has a sawbar connectable to a saw blade. The transmission converts a rotational input provided by the motor shaft to a reciprocating output of the sawbar along a reciprocating axis that is either coaxial or parallel with the rotational axis.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: April 26, 2022
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: James Wekwert, Logan M. Hietpas
  • Patent number: 10707657
    Abstract: The present invention discloses an automatic removing apparatus for ring main unit cable head which comprises an outer casing formed by a handle and an outer casing body; the outer casing body has a rear end which is fixedly connected to the handle; the outer casing body has a front end which is fixedly connected to a connecting head; a motor and a control chip connected to the motor are disposed inside the outer casing; the control chip is electrically connected to a battery for supplying power to the control chip and the motor; the motor has a rotation shaft which drives rotation of a main gear; the connecting head is fixedly connected to a removing rod; a follower gear which meshes with the main gear is fixedly disposed at the connecting head for rotating around the main gear. The present invention has the advantageous effect of enhancing working efficiency.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: July 7, 2020
    Inventors: Baofeng Miao, Fashan Yang, Songpeng Xie, Shan Liu, Longwei Huang, Yuliang Li, Chuzhong Xu, Lei Li, Wenbo Li, Yingju Wang
  • Patent number: 10293422
    Abstract: A blade is usable with a reciprocating saw. The blade includes an attachment portion configured to couple to the reciprocating saw and a body extending from the attachment portion. The body includes a first profile portion and a second profile portion extending from the first profile portion. The second profile portion has a height less than a height of the first profile portion. The blade also includes a plurality of teeth formed on the body and defining a toothed cutting edge. The blade also includes a tip portion formed at a distal end of the second profile portion and terminating in a pointed tip. The pointed tip is configured to punch a hole through the workpiece and includes a toothless cutting edge extending substantially parallel to the toothed cutting edge. The toothless cutting edge extends from the toothed cutting edge to the pointed tip.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: May 21, 2019
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: Austin J. Kazda, Ryan J. Malloy, Robert W. Butzen, Andrew J. Schulz, Roger D. Neitzell, Courtney D. McCool
  • Patent number: 10085762
    Abstract: An ultrasonic clamp coagulator assembly configured to permit selective cutting, coagulation and clamping of tissue during surgical procedures. The assembly includes a blade having a first and second tissue contact surface and a clamping mechanism, including a first and second clamp arm pivotally mounted at the distal portion of the instrument for clamping tissue between first and second tissue contact surfaces, respectively.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: October 2, 2018
    Assignee: Ethicon LLC
    Inventors: Richard W. Timm, Charles J. Scheib, Amy L. Marcotte, Ryan M. Asher, John B. Schulte, Jacob S. Gee
  • Patent number: 9591809
    Abstract: An extendable hedge trimmer includes a housing having a handle end and a tool end. The handle end includes a battery and an electrical connector. The tool end includes a hedge trimming implement, a motor, and an electrical connector. The electrical connector of the tool end is electrically connected with the motor. Wiring is included within the handle end for electrically connecting the battery and the electrical connector of the handle end. The trimmer also includes a pole which is releasably connectable between the tool end and the handle end. The pole is configured for electrically connecting the handle end with the tool end. The trimmer also includes a latch mechanism for releasably attaching the pole between tool end and handle end. The trimmer also includes an input for receiving AC line power via a power cord, the trimmer configured for being power by AC line power and/or battery power.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: March 14, 2017
    Assignee: MTD PRODUCTS INC
    Inventors: Jason Gieske, Cherry A. Bochmann, Erin Q. Riddell
  • Patent number: 9085087
    Abstract: A palm jig saw includes a motor, a transmission mechanism connected to an output shaft of the motor, and an implementing element which is driven by the transmission mechanism and which movement trajectory is in the same plane called a swing plane. The palm jig saw further includes a switch locking structure including a push button assembly and a press button assembly, wherein a movement direction of the push button assembly is generally parallel to the swing plane, and a movement direction of the press button assembly is generally perpendicular to the swing plane.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: July 21, 2015
    Assignee: Chervon (HK) Limited
    Inventors: Guigong Ni, Ping Wang
  • Publication number: 20150040405
    Abstract: An electric hair clipper includes a housing containing an electrical source and drive-related components. A clipper mechanism having a reciprocating clipper is located beneath the bottom of the housing but is spaced therefrom by a central hub that extends downwardly from the bottom of the housing. The housing, central hub and clipper mechanism are arranged such that a person can hold the electric hair clipper by placing his or her fingers in the space between the housing and the clipper mechanism with the central hub lying between two fingers and with the back of the person's fingers resting in a pair of elongated spaced apart recesses formed in the bottom of the housing on opposite sides of the hub.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 12, 2015
    Applicant: Skull Shaver, LLC
    Inventor: NEEL B. KULSHRESHTHA
  • Patent number: 8915219
    Abstract: A working machine engine is provided. The air flowing through the front side cooling air flow passage and the upper side cooling air flow passage which are provided in the front side and the upper side of the casing, respectively, and the air flowing through the auxiliary air flow passage provided in the back side of the casing join together near the opening. By this means, the air flowing through the auxiliary air flow passage can change the direction of the air flowing lengthwise through the front side cooling air flow passage and the upper side cooling air flow passage.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: December 23, 2014
    Assignee: Makita Corporation
    Inventors: Yuki Nakamura, Yasuyuki Sakakibara
  • Publication number: 20140259692
    Abstract: A battery operated handheld power tool, comprising a working tool assembly (20), a handle assembly (10) and an elongate tubular rod (30). The working tool assembly (20) comprises a motor housing (26) having a first inner space (27), comprising an electric motor (21) with a fan (25). The first inner space (27) is connected to the exterior of the working tool assembly (20) N by means of at least one air outlet (28). The handle assembly (10) comprises a second inner space (19) in which a control unit (15) is positioned, the second inner space (19) being in flow communication with the exterior of the handle assembly (10). The elongate tubular rod (30) defines an air guiding channel (33), in flow communication with the first inner space (27) and the second inner space (19).
    Type: Application
    Filed: October 27, 2011
    Publication date: September 18, 2014
    Applicant: HUSQVARNA AB
    Inventors: Mikael Racov, Henrik Hvitman, Peter Gunnarsson
  • Publication number: 20140259691
    Abstract: A hair clipper has a base structural housing with a blade set operably secured thereto. The blade set has a stationary blade and a reciprocating blade. The base has at least one support for a rotary motor. A flexible motor vibration and noise damper fits over half of the motor, and a motor cover is secured to the base structural housing over the vibration damper. A secondary housing cover is secured to the base structural housing over the motor cover.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: WAHL CLIPPER CORPORATION
    Inventors: Steven Arndt, Jeff Gesiakowski
  • Publication number: 20140208599
    Abstract: A work machine includes a motor and a sensor disposed in a front unit, a motor controller disposed in a rear unit, a motor power line and a sensor signal line disposed along an operation rod, and a pair of electric connectors. The motor power line includes first and second partial motor power lines disposed along the first and second partial rods respectively. The sensor signal line includes first and second partial sensor signal lines disposed along the first and second partial rods respectively. A first electric connector includes first electric terminals, each of which is coupled with corresponding one of the first partial motor power line or the first partial sensor signal line, and a second electric connector includes second electric terminals, each of which is coupled with corresponding one of the second partial motor power line or the second partial sensor signal line.
    Type: Application
    Filed: December 11, 2013
    Publication date: July 31, 2014
    Applicant: MAKITA CORPORATION
    Inventor: Tatsuya NAGAHAMA
  • Publication number: 20140165412
    Abstract: A work machine includes an operation rod, a front unit disposed at a front end of the operation rod and configured to attach a tool, a rear unit disposed at a rear end of the operation rod and configured to attach a battery, a brushless motor disposed in the front unit and configured to drive the tool, a motor controller disposed in the rear unit and electrically coupled with the battery, and a plurality of motor power lines disposed along the operation rod and configured to electrically couple the motor controller with the brushless motor.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 19, 2014
    Applicant: MAKITA CORPORATION
    Inventors: Yoshifumi MORITA, Katsuna HAYASHI
  • Publication number: 20140137415
    Abstract: An accessory for a reciprocating power tool including a first blade clamp mechanism and a linkage having a first end and a second end. The accessory further includes an attachment member coupled to the first blade clamp mechanism and to the first end of the linkage. The attachment member couples the linkage to the tool. A shaft is secured to the second end of the linkage and includes a second blade clamp mechanism. A distal member is coupled to the power tool and defines a channel through which the shaft extends. The channel defines a first stop surface and a second stop surface. A biasing mechanism is contained within the distal member and supported by one of the first and second stop surfaces. The biasing mechanism biases the shaft in a first position.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 22, 2014
    Applicant: Techtronic Power Tools Technology Limited
    Inventor: Christopher Clearman
  • Patent number: 8695223
    Abstract: A bush cutter comprises an operating rod, a cutting unit, a main unit and a transfer shaft. The cutting unit is disposed at a front end of the operating rod and rotatably supports a cutting blade. The main unit is disposed at a rear end of the operating rod and houses a motor that drives the cutting blade. The transfer shaft is disposed within the operating rod and transfer output torque of the motor from the main unit to the cutting unit. An adapter is fixed to the rear end of the operating rod and the main unit is provided with a rod insertion hole configured to receive the rear end of the operating rod with the adapter fixed. This configuration may prevent the operating rod, which has versatility, from being erroneously assembled.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: April 15, 2014
    Assignee: Makita Corporation
    Inventor: Ryosuke Ito
  • Patent number: 8667697
    Abstract: The invention relates to an eccentric gear arrangement of a motor-driven, hand-guided hedge trimmer (1). The eccentric gear arrangement includes two shearing blades (2, 3) driven in mutually opposite directions over a displacement path (a). Each shearing blade has a connecting link (4, 5) as well as an eccentric wheel (6) having a drive wheel (7) and two eccentrics (8, 9). The eccentric wheel (6) rotates about a rotational axis (10). The two connecting links (4, 5) lie directly above one another. The two eccentrics (8, 9) are arranged on the same side of the drive wheel (7) and engage each in one of the two connecting links (4, 5). The two shearing blades (2, 3) have contact pressure surfaces (11, 12) in the region of their two connecting links (4, 5) and are offset with respect to each other in such a manner that they are exposed at least over a portion of the displacement path (a). Two downholders (13, 14) are provided which act each on one of the assigned contact pressure surfaces (11, 12).
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: March 11, 2014
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Markus Hittmann, Ralf Schenk, Reinhard Friedrich, Günter Mayer
  • Publication number: 20140007435
    Abstract: The invention relates to a portable work apparatus having a housing and a work tool which is driven by an electric motor via a gear assembly. A flywheel which rotates about a rotational axis is arranged in the drive train between the electric motor and the gear assembly, which flywheel is connected fixedly to an output shaft so as to rotate with it, which output shaft protrudes into a gear assembly space and has a drive pinion. The output, shaft and the flywheel are mounted in the housing by two bearing locations, the rotational axis of the flywheel and a motor shaft of the electric motor lying coaxially with respect to one another, and the motor shaft of the electric motor being connected fixedly to the flywheel so as to rotate with it. The electric motor is fixed in the housing exclusively via a torque support.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 9, 2014
    Inventors: Arne Untermann, Markus Maier, Ante Hamersmit, Christian Renz, Johannes Menzel, Ina Schneider, Jochen Luz, Jens Kloeker, Harald Mang, David Hampe, David Kraetzig
  • Patent number: 8585469
    Abstract: An adapter is disclosed for mounting a tool on an oscillating drive having a drive shaft that can be driven to oscillate about its longitudinal axis, wherein the adapter is passed by a central opening, and has at its drive end at least one positive-locking element for positive connection with the tool, the positive-locking element having the shape of a regular polygon, or a plurality of positive-locking elements arranged on a circle concentric to the center axis, or a plurality of outwardly extending convex projections having rounded tips and being connected with neighboring projections via rounded concave lateral flanks, wherein the positive-locking elements on the drive end are configured for positive-locking connection with a matching positive-locking counter-element on the drive shaft, and wherein the adapter has a second receptacle on its tool end for effecting connection with a tool having a shape different from the first receptacle and being configured as a circle, or as a plurality of positive-locking
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: November 19, 2013
    Assignee: C. & E. Fein GmbH
    Inventor: Peter Grunikiewicz
  • Patent number: 8539678
    Abstract: A device for a motor driven tool such as a pole hedge trimmer, a pole saw or the like. The tool includes a drive unit that via a shaft tube is connected to a cutting unit. The cutting unit is turnably secured at the shaft tube by the device which is a turnable connection, wherein the cutting unit is movable between a range of at least two working positions and a transport position. The cutting unit is provided with one or several movable cutting elements and the tool is provided with locking structure for locking the movement of the cutting elements when the cutting unit is in the transport position.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: September 24, 2013
    Assignee: Husqvarna AB
    Inventors: Goran Dahlberg, Bengt Gustavsson
  • Publication number: 20130239418
    Abstract: A reciprocating power tool including a housing supporting a motor having a drive shaft, a blade clamp mechanism, and a drive mechanism. The drive clamp mechanism is coupled to the motor for converting rotational motion of the drive shaft into reciprocating motion of the blade clamp mechanism. The power tool includes an accessory having an attachment portion coupled to the blade clamp mechanism, and a body portion extending from the attachment portion. A grout rake is coupled to the body portion and includes a plurality of cutter portions. The grout rake is repositionable relative to the body portion between a first position and a second position. In the first position one of the plurality of cutter portions is located in a working position for contacting a workpiece, and in the second position another one of the plurality of cutter portions is located in the working position for contacting the workpiece.
    Type: Application
    Filed: February 8, 2013
    Publication date: September 19, 2013
    Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventor: Sean T. Kehoe
  • Publication number: 20130160304
    Abstract: A vegetation cutting device comprises, a housing, and a motor located within the housing. The motor comprises a rotating output shaft for driving a pair of reciprocating blades. The vegetation cutting device also comprises a rotatable front handle being rotatably mounted on the housing and is adapted to rotate with respect to the housing. The rotatable front handle comprises, a first trigger wherein the motor is operable on actuation of the first trigger. A release button is mechanical cooperation with the rotatable front handle for actuating rotation of the front handle. The vegetation cutting device also comprises an interlock mechanism mechanically coupling the release button and the first trigger wherein actuation of the release button prevents actuation of the first trigger and actuation of the first trigger prevents actuation of the release button.
    Type: Application
    Filed: December 11, 2012
    Publication date: June 27, 2013
    Applicant: BLACK & DECKER INC.
    Inventor: BLACK & DECKER INC.
  • Patent number: 8453546
    Abstract: A cast-cutter (10) for removing a cast from a patient comprises a body (12) and a cutting assembly (18) secured thereto, wherein the cutting assembly (18) includes first and second relatively moveable cutting members (40, 44). Each cutting member (40, 44) defines a cutting edge (46, 48) which when in use cooperate to cut by a shearing action. Each cutting member (40, 44) also defines an inner face (60) and are adapted to maintain the inner faces (60) in non-engaging relationship to provide clearance therebetween in order to prevent material binding between the member (40, 44) during a cutting operation.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: June 4, 2013
    Assignee: Ross Wark Medical Limited
    Inventors: David J. Ross, George Miller
  • Publication number: 20130111765
    Abstract: In an electric hair cutter and a control method for its motor rotational speed, the electric hair cutter includes a main body, a BLDC (brushless DC) motor, a power source, a detecting unit, an electrical energy adjusting unit and a control module. The main body has a cutting unit. The BLDC motor drives the cutting unit. The detecting unit can detect the counter-electromotive force of the BLDC motor. The control module may receive the counter-electromotive force signals detected by the detecting unit and may control the electrical energy adjusting unit according to the counter-electromotive force signals so as to keep the BLDC motor rotating at a fixed RPM.
    Type: Application
    Filed: November 3, 2011
    Publication date: May 9, 2013
    Inventor: Yen-Fu Liao
  • Publication number: 20130097876
    Abstract: The present invention relates to a method and devices for mounting and securing a handle (110) on a power driven hand tool (100) The power driven hand tool (100) is provided with a main body (104) comprising a housing (106) with a drive unit for driving a working member of the tool (100), a handle (110) for user operation of the tool (100), and a connecting part (112) for connecting the handle (110) with the main body (106). Further, a front end of the handle (110) may be inserted into a rear end of the connecting part (112) in a first rotational position in relation to the connecting part (112), and the handle (110) may be rotated into a second rotational position in relation to the connecting part (112). In the second rotational position, the handle (110) and the connecting part (112) are locked to each other by means of an automatic locking mechanism.
    Type: Application
    Filed: June 4, 2010
    Publication date: April 25, 2013
    Applicant: HUSQVARNA AB
    Inventors: Carl-Johan Fong, Stefan Valfridsson, Ulrik Gejervall, Matias Nybacka
  • Publication number: 20130091715
    Abstract: A handheld work apparatus such as a stone cutter (1) having a housing (2) in which a drive motor (5) is arranged. The work apparatus has a tool driven by the drive motor (5) for cutting mineral or metallic materials. The housing (2) has a housing front end (16) facing the workpiece to be cut and arranged adjacent to the workpiece. The tool projects beyond the housing front end (16). In order to avoid damage on the housing front end (16), it is provided that an elastic guard (17, 47), which extends over at least 50% of the width (b) of the housing front end (16), is arranged on the housing front end (16).
    Type: Application
    Filed: October 11, 2012
    Publication date: April 18, 2013
    Applicant: ANDREAS STIHL AG & CO. KG
    Inventor: Andreas Stihl AG & Co. KG
  • Publication number: 20130047443
    Abstract: The present invention provides a portable cutting tool, which comprises: a blade for cutting workpieces, the blade having a blade plane; a housing; and a moveable guard installed on the housing, wherein the guard is provided with a blade through-hole through which the blade passes, the guard moves between a first position and a second position with respect to the housing, when the guard is located at the first position, the blade does not pass through the blade through-hole, and when the guard is located at the second position, the blade passes through the blade through-hole; either the guard or the housing is provided with an arc guide rail, and the other has position-limiting members which are matched with the arc guide rail to limit the displacement of the guard along the normal direction of the arc guide rail.
    Type: Application
    Filed: September 21, 2010
    Publication date: February 28, 2013
    Inventors: Warren Brown, Graham Gerhardt, Harry Szommer, Yu Zhao, Zhou Zhongya
  • Publication number: 20130042487
    Abstract: The present invention relates to a motorized beard trimmer comprising a cutting unit with a cutting mechanism defining a cutting line and a comb defining a support point, said cutting unit being mounted so as to tilt on a handle, wherein the tilting axis of the cutting unit, the cutting line and the support point of the comb are globally aligned or superimposed, allowing said cutting unit to be automatically positioned tangentially to the shape of the face during trimming of the beard.
    Type: Application
    Filed: September 20, 2010
    Publication date: February 21, 2013
    Inventor: Pierre Julemont
  • Publication number: 20120311873
    Abstract: A portable, hand-held, combustion engine powered working machine, e.g. a power cutter, chain saw or trimmer, comprising: a tool unit including a working tool; a machine unit (104) including an internal combustion engine (204) with a crankshaft (304); an assembly for supplying cleaned air and fuel to the engine, having an upstream air inlet; a fan housing (404) located in an outer end of said tool unit and having an air inlet for ambient air; a fan wheel (302) arranged in the fan housing (404); the fan wheel (302) driven by the crankshaft (304) to supply cooling air, sucked in through the air inlet to cool the engine (204); a combustion air duct (406) having a combustion air intake opening (408) located radially outside of the fan wheel (302) leads the combustion air to the assembly for supplying cleaned air and fuel to the engine via a possible air filter (402).
    Type: Application
    Filed: December 2, 2009
    Publication date: December 13, 2012
    Applicant: HUSQVARNA AB
    Inventor: Hans Petersson
  • Publication number: 20120291294
    Abstract: A reciprocating power tool and drive mechanism with a drive shaft mounted for reciprocating movement relative to a housing along a center longitudinal axis of the drive shaft. The drive shaft has a front end adapted to attach to an external shaft or tool attachment, a rear end, and a slot oriented perpendicular to the center longitudinal axis of the drive shaft between the front and rear ends. A motor driven shaft imparts rotary movement to a pinion gear, which meshes with a crown gear to impart rotary motion to the crown gear about its center axis. A drive pin connected to the crown gear has an eccentric pin eccentrically offset relative to the center axis of the crown gear for engagement in the slot of the drive shaft so as to impart the reciprocating movement to the drive shaft on rotation of the crown gear.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 22, 2012
    Applicant: Crystal Glass Canada Ltd.
    Inventors: Scott D. MIDDLETON, Winston Harold PARNALL, Alfred John OGSTON
  • Publication number: 20120285022
    Abstract: A reciprocation driving device is adapted to be mounted in a housing of a hair clipper for reciprocating a moving blade of a blade assembly, and includes a stator unit and a rotor unit. The stator unit has a tubular shaft to permit a spindle of the rotor unit to be rotatably mounted therein by virtue of a pair of bearings, a bracing member disposed to be engaged with the housing, and a coil winding assembly disposed on the tubular shaft. The rotor unit has a carrier member extending radially and outwardly from a spindle end of the spindle to carry a permanently magnetic member so as to generate a torque as a result of electromagnetic forces acting between the rotor and stator units.
    Type: Application
    Filed: May 10, 2011
    Publication date: November 15, 2012
    Inventor: Huo-Pia Wang
  • Publication number: 20120246944
    Abstract: A tool and a method are disclosed for cutting coils in a dynamoelectric machine. In an embodiment, the tool includes a blade having a cutting edge on a distal end thereof. The blade is operably connected on a proximal end thereof to a double acting hydraulic cylinder. The tool further includes at least one guide arm coupled to and extending longitudinally in a distal direction from the double acting hydraulic cylinder, wherein the at least one guide arm is disposed alongside the blade and extends parallel to a path of the blade.
    Type: Application
    Filed: April 4, 2011
    Publication date: October 4, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Syed Wajahat Ali, John Matthew Sassatelli, Andrew John Tomko
  • Patent number: 8261453
    Abstract: The present invention relates to a plastic pipe cutting tool comprising a housing body with handle, a blade holder mounted on the housing body and a rotatable blade associated with the blade holder to form a cutting opening, is characterized in that said housing body is provided with a motor which is drivable connected with said blade, and is further provided with a power supply which is electrically connected with the motor by switch to form a loop circuit. The plastic pipe cutting tool according to the present invention is driven by electric and can decrease labor intensity, and is light and easy-carried.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: September 11, 2012
    Assignee: Ningbo JF Tools Industrial Co., Ltd.
    Inventor: Zhonghua Huang
  • Publication number: 20120131803
    Abstract: A cutting machine providing excellent usability and facilitating installation of a battery pack is provided. The cutting machine includes a handle provided on a housing accommodating a motor, and a cutting blade operated by the motor driven by the battery pack which is a drive source. An insert receiving member is formed in the housing at the rear of the handle, and has an open top end allowing the battery pack to be inserted and installed therein from above. The insert receiving member is integrally joined to the handle.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 31, 2012
    Applicant: MAKITA CORPORATION
    Inventors: Syuji AOYAMA, Kenta NIWA
  • Publication number: 20120124842
    Abstract: A top plate is provided in a top portion of a cylinder block of a combustion engine of a type, provided with a cooling fan, so as to lie perpendicular to a longitudinal axis of an engine cylinder. An intake side gasket interposed between the cylinder block and an intake unit is extended upwardly to contact the top plate to thereby seal a gap between the top plate and the intake side gasket. An exhaust side gasket interposed between the cylinder block and an exhaust unit is extended upwardly to contact the top plate to thereby seal a gap between the top plate and the exhaust side gasket. A cooling passage for passing therethrough a cooling air from the cooling fan is formed by the cylinder block, the top plate, the intake side gasket and the exhaust side gasket.
    Type: Application
    Filed: October 25, 2011
    Publication date: May 24, 2012
    Inventor: Tsuneyoshi Yuasa
  • Publication number: 20120073145
    Abstract: The present invention relates to a weed trimmer for trimming a lawn comprising: a gas powered motor, where the motor is mounted one end of a shaft; a cutting assembly, where the cutting assembly is mounted on a second end of a shaft; an electric starter to start the motor; and a means to supply power to the electric starter. In one particular embodiment, the means to supply power may include an AC power cord. The weed trimmer may also include a start button to activate the starter.
    Type: Application
    Filed: September 24, 2010
    Publication date: March 29, 2012
    Inventor: Jan Gehrki
  • Patent number: 8136254
    Abstract: An extendable hedge trimmer includes a housing having a handle end and a tool end. The handle end includes a battery and an electrical connector. The tool end includes a hedge trimming implement, a motor, and an electrical connector. The electrical connector of the tool end is electrically connected with the motor. Wiring is included within the handle end for electrically connecting the battery and the electrical connector of the handle end. The trimmer also includes a pole which is releasably connectable between the tool end and the handle end. The pole is configured for electrically connecting the handle end with the tool end. The trimmer also includes a latch mechanism for releasably attaching the pole between tool end and handle end. The trimmer also includes an input for receiving AC line power via a power cord, the trimmer configured for being powered by AC line power and/or battery power.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: March 20, 2012
    Assignee: MTD Products Inc
    Inventors: Jason Gieske, Cherry A. Bochmann, Erin Q. Riddell
  • Publication number: 20120023761
    Abstract: A battery-powered portable cutting tool such as a chainsaw or hedge trimmer, comprising: a housing (1), a cutting element (2) supported by the housing, an electric motor (6) coupled to the cutting element (2) so as to drive the cutting element (2) to cut, a battery (5) electrically coupled to the motor (6) so as to supply electric current to the motor (6) and a control circuit (9) arranged to control the supply of electric current to the motor (6) from the battery (5), in which the control circuit (9) comprises a main switch (8) operable by a user and an auxiliary switch (10, 11) also operable by a user; in which the control circuit (9) has: an active state in which operation of the main switch (8) by the user allows electric current to flow to the motor (6) so as to cause the cutting element (2) to be driven; and an inactive state in which operation of the main switch (8) does not allow electric current to flow to the motor (6) and so the motor (6) does not drive the cutting element (2); in which operation o
    Type: Application
    Filed: April 1, 2010
    Publication date: February 2, 2012
    Applicant: HUSQVARNA AB
    Inventors: Pär Martinsson, Johan Svennung, Johan Björnlinger
  • Publication number: 20120017447
    Abstract: A hand-held power tool for pruning and cutting vegetation and a method for replacing blades thereof. The hand-held power tool has a main body and a work head detachably mounted on the main body. The main body has a housing, a motor placed in the housing, and a first gear transmissively connected with the motor. The work head has a blade assembly and a second gear. The second gear engages with the first gear and is provided with a eccentric member connected with the blade assembly. By arranging one portion of the transmission mechanism on the work head, especially the second gear used for providing the eccentrically rotary output on the work head, the transmission mechanism is directly connected with the blade assembly. When the work head needs to be mounted on the main body, it only needs the second gear to be placed on the mandrel arranged on the main body where it will engage with the first gear.
    Type: Application
    Filed: July 25, 2011
    Publication date: January 26, 2012
    Applicant: CHERVON (HK) LIMITED
    Inventors: Fangjie Nie, Toshinari Yamaoka, Haishen Xu, Li Li
  • Publication number: 20120011730
    Abstract: A working machine engine is provided. The air flowing through the front side cooling air flow passage and the upper side cooling air flow passage which are provided in the front side and the upper side of the casing, respectively, and the air flowing through the auxiliary air flow passage provided in the back side of the casing join together near the opening. By this means, the air flowing through the auxiliary air flow passage can change the direction of the air flowing lengthwise through the front side cooling air flow passage and the upper side cooling air flow passage.
    Type: Application
    Filed: June 1, 2011
    Publication date: January 19, 2012
    Applicant: MAKITA CORPORATION
    Inventors: Yuki NAKAMURA, Yasuyuki SAKAKIBARA
  • Publication number: 20120005904
    Abstract: Apparatus and methods for cutting a material, especially with low material speed and high cutting torque. In some embodiments, the apparatus is a hand-held device for quietly cutting through an orthopedic cast with little or no generation of debris. In yet other embodiments, there is a method for automatically advancing material past a shearing surface, such that the shearing action occurs at about the same velocity as the advancement. In yet other embodiments, there is a device for cutting material between a foot and a sharp edge, with the bottom of the foot being under the sharp edge to protect the skin of the patient.
    Type: Application
    Filed: November 13, 2008
    Publication date: January 12, 2012
    Applicant: ORTHOPEDIATRICS, LLC
    Inventors: Paul A. Zwirkoski, Joseph T. Adams, Nick A. Deeter, Gary D. Barnett, Bob Van Seggern, Michael C. Jones
  • Patent number: 8033025
    Abstract: The invention concerns a shearing or gripping tool which comprises a body with a proximal end and a distal end and defining an internal chamber for a drive piston for actuating the shearing or gripping tool which move between an idle and active position in answer to the movements of the piston between the retracted and forward positions. Sensitive elements to detect at least the forward position of the piston in its respective chamber and in the same way the active position of the shearing or gripping tools in order to signal the effective fulfilment of their action, are associated with the proximal part of the body.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: October 11, 2011
    Assignee: GIMATIC S.p.A.
    Inventor: Giuseppe Maffeis
  • Publication number: 20110232436
    Abstract: A power tool head is including a trimmer head or the like is powered with an AC or DC motor. The head and tool attachment are ergonomically constructed to facilitate use and operation. In the trimmer tool, molded line blades with or without an aerodynamic cross-section provide for effective cutting at low speeds and low power requirements. The line blades may be selectively oriented to improve strength and durability.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 29, 2011
    Inventor: Vincent D. Morabit
  • Publication number: 20110214289
    Abstract: A combination powered grooming device comprising a handle and a grooming attachment. The handle has a longitudinal axis extending between an upper end and a lower end. The handle comprises a trimmer assembly disposed adjacent the upper end and the trimmer assembly includes at least one moving blade. The handle further comprises an electrical arrangement disposed therein. The electrical arrangement comprises a motor having a drive shaft and a drive mechanism coupled to the drive shaft and to the trimmer assembly. In a trimming mode, the drive mechanism translates movement of the drive shaft to the moving blade. The grooming attachment is adapted for mounting onto the upper end.
    Type: Application
    Filed: April 4, 2011
    Publication date: September 8, 2011
    Inventors: Michael Maichel, Markus Schuessler, Ralf Klug, Cirilo Javier Perez Lopez, Terence Gordon Royle, Andreas Larscheid, Stefan Rehbein, Ulrich Fandrey, Juergen Behrendt, Gerrit Roenneberg
  • Publication number: 20110203119
    Abstract: A tool has a housing. A blade bar projects forwards from the housing along a longitudinal axis. An electric drive motor drives the blade bar. At least one battery supplies the drive motor with electrical energy. The blade bar, the drive motor and the battery are mounted on the housing. The tool has a top handle arranged above a center of gravity of the tool, and a rear handle arranged behind the tool center of gravity. The battery is arranged on the housing at least mainly in front of the rear handle.
    Type: Application
    Filed: May 3, 2011
    Publication date: August 25, 2011
    Inventor: Heiko Rosskamp
  • Publication number: 20110138634
    Abstract: The present application provides a pruning machine with an extendible rod. The pruning machine also includes a main body and a battery pack. The main body has a housing, a blade group, a motor, a transmission device and a switch on the outside of the housing. The battery pack has a plug to connect with a socket on the main body. One end of the extendible rod has the same plug as the battery pack to connect with the socket of the main body plug and the other end has the same socket of the main body to receive the plug of the battery pack. By using the same plug and socket structure throughout, the present application provides good adaptability and is suitable for a wide range of pruning operations.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 16, 2011
    Applicant: Chervon Limited
    Inventors: Toshinari Yamaoka, Wei Jiang
  • Patent number: 7958642
    Abstract: A hedge trimmer has a housing. A blade bar projects forwards from the housing along a longitudinal axis. An electric drive motor drives the blade bar. At least one battery supplies the drive motor with electrical energy. The blade bar, the drive motor and the battery are mounted on the housing. The hedge trimmer has a top handle arranged above a center of gravity of the hedge trimmer, and a rear handle arranged behind the hedge-trimmer center of gravity. The battery is arranged on the housing at least mainly in front of the rear handle.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: June 14, 2011
    Assignee: Andreas Stihl AG & Co. KG
    Inventor: Heiko Rosskamp
  • Patent number: 7908949
    Abstract: A windshield removal assembly, method and blade for same, with the thin metal blade having a unique delta-shape. The blade connects at its narrowed shank portion to the shaft of a reciprocating power tool. The blade has front and rear ends, the front end being substantially straight and wider than the blade rear end. The top edge of the blade forms a non-sharpened top edge on the front end and arc portions, while the bottom edge of the blade forms a sharpened bottom cutting edge which extends across the front end of the blade and along at least half of the arc portions. The blade has sufficient rigidity to cut the urethane bed when reciprocated, and sufficient lateral flexibility to conform to the curved surface of the windshield when pressed thereagainst.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: March 22, 2011
    Assignee: Crystal Glass Canada Ltd.
    Inventor: Alfred John Ogston
  • Patent number: 7856724
    Abstract: An electrical power tool includes a locking device (31) for securing the working tool (3) on a motor-driven shaft (2; 200), a device (10) for braking the shaft (2), a safety element (8) connected with the braking device (10) and an actuation switch (7) and having a safety position that corresponds to the braking position of the braking device (10) and a non-actuation position of the switch (7) in which the switch (7) cannot turn the shaft-driving motor (M) on, and a release position that corresponds to the release position of the braking device (10) and an actuation position of the switch (7), and a locking mechanism (21) operatively connected with the safety element (8) and the locking device (31) and displaceable between a locking position which corresponds to an unlocking position of locking device (31) and in which the safety element (8) is retained in its safety position, and a release position in which the locking device (31) is in its locking position, and the safety element (8) occupies its release po
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: December 28, 2010
    Assignee: Hilti Aktiengesellschaft
    Inventor: Markus Hartmann
  • Publication number: 20100313429
    Abstract: A trimmer has a cutting head, a shaft rod, and at least one handle. The cutting head is rotatably mounted at one end of the shaft rod by a connection device which has a central axis. At least one handle is mounted on the other end of the shaft rod. The cutting head moves between a horizontal position and a vertical position by rotating the cutting head 97.5 degrees around the center axis.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 16, 2010
    Applicant: Chervon Limited
    Inventors: Toshinari Yamaoka, Haishen Xu, Wei Jiang
  • Publication number: 20100307010
    Abstract: A hydraulic rescue tool (10) with a quick-change head (26) that incorporates a cylinder (20) having a piston rod (22) and a forward end structure (24). The forward end structure (24) has a separable head and a cylinder attaching bifurcated yoke (28). A pair of yoke quick release pins (48) jointly engage the head (26) and the bifurcated yoke (28) thus, creating an attachment therebetween. A pair of cutting blades (50) are connected to the head (26), and links (54) connect to the piston rod on a first end and to the cutting blades (50) on a second end, thereby forcing the cutting blades from an open position to a closed position by movement of the piston rod (22). A pair of link quick release pins (60) engage the links (54), creating an attachment therebetween, permitting the links to be released by manually disengaging the quick release pins, thereby allowing the head, including the cutting blades, to be rapidly removed or repaired.
    Type: Application
    Filed: August 12, 2010
    Publication date: December 9, 2010
    Inventors: Tommy L. Patton, Edward H. Hagbloom