Slidable Guide Plate Intersected By Saw Blade Patents (Class 30/374)
  • Patent number: 10293421
    Abstract: A shroud for circular saws is provided. The shroud attaches to the shoe of a circular saw and includes a blade opening to allow the saw blade to pass through the shroud. Dust is collected from the front and back of the blade and directed to a vacuum through an internal plenum. The shroud may include vertical hoods which extend up from the front and back of the blade opening and cooperate with the circular saw blade guard to capture dust and debris. The bottom of the shroud may include wheels to assist in using the shroud and saw.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: May 21, 2019
    Assignee: DUSTLESS DEPOT, LLC
    Inventors: Kendall Hansen, Kyle Alan Bjork
  • Patent number: 9132491
    Abstract: A power tool includes a housing having a handle configured for a user, the handle defining a first axis, a motor supported by the housing, the motor defining a second axis along a length of the motor, a tool element movably supported by the housing and drivingly coupled to the motor, the tool element defining a third axis along a length of the tool element. Each of the first, second, and third axes are oblique with respect to each of the other axes.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: September 15, 2015
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Daniel J. Alberti, John S. Scott, Michael S. Steele, Roger D. Neitzell, Michael Naughton, Michael W. Phillips, Andrew Batterman
  • Patent number: 9061411
    Abstract: A reciprocating power tool that includes a drive system having a first driven gear that includes a spindle counterbalance weight and a second driven gear that includes a spindle counterbalance weight. The first driven gear and the second driven gear rotate in opposite directions about an axis of rotation in response to rotation of a driving gear by a motor. The power tool further includes a spindle having a longitudinal axis and a first end that is configured to support a tool element. The spindle is coupled to one of the first driven gear and the second driven gear by a scotch yoke mechanism to reciprocate the spindle with respect to a housing of the power tool along the longitudinal axis of the spindle in response to operation of the motor.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: June 23, 2015
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Michael Naughton, Kurt Limberg, John S. Scott
  • Patent number: 9038277
    Abstract: An accessory for a reciprocating saw, having a blade configured to cut a workpiece and a shoe including a guiding surface for engaging the workpiece, includes a body having a first face and a second face opposite the first face. The body includes a member proximate the second face for coupling the accessory to the shoe. A guiding surface is defined on the first face of the body for engaging a workpiece and an opening is formed in the body for receiving the blade. The guiding surface constitutes a modified surface configured to differ from the guiding surface of the shoe by at least one characteristic.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: May 26, 2015
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Michael S. Steele, Timothy Kenney, Steven F. Thiel
  • Patent number: 9021930
    Abstract: A cutting device includes a cutting unit having a rotary blade, a table for placing a workpiece thereon, and a support device vertically movably supporting the cutting unit relative to the table. The cutting unit includes a blade case. The blade case covers an upper portion of the rotary blade and has a dust discharge member for discharging dust produced at a cutting region. The cutting device further includes a dust guide device disposed on at least one of an upstream side and a downstream side of the dust discharge member with respect to a flow of the dust. A position of at least a part of the dust guide device changes relative to the dust discharge member according to change of the vertical position of the cutting unit.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: May 5, 2015
    Assignee: Makita Corporation
    Inventors: Toshiyuki Kani, Goh Yamamura
  • Publication number: 20140373366
    Abstract: A jigsaw includes a main body having a grasping part configured to be grasped by a user, a blade projecting downwardly from a front part of the main body and configured to reciprocate up and down, and a base coupled to a lower part of the main body and configured to make contact with a workpiece. A rear end of a contact surface that is configured to make contact with the workpiece is located at a position that coincides with or is rearward of the rear end of the grasping part.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 25, 2014
    Inventors: Toshiyuki Kani, Fumihide Sugita, Kenji ABE
  • Publication number: 20140345436
    Abstract: A saw guide for a hand held power saw with a rotating circular blade includes a plate (sometimes referred to as a skate plate) having a first face and a second face, peripheral edges and an elongated slot positioned adjacent one of the peripheral edges. The slot extends through the plate from the first face to the second face. A saw receiving seat is positioned on the first face adapted to receive the hand held power saw with the rotating circular blade of the hand held power saw extending down through the elongated slot. Protruding attachment tabs are positioned along the peripheral edges of the plate having openings to facilitate fasteners securing the hand held power saw on the saw receiving seat. Rail guides depend from the second face of the plate. The rail guides defining a guide channel with opposing sidewalls that are parallel to the elongated slot and parallel to each other.
    Type: Application
    Filed: May 21, 2014
    Publication date: November 27, 2014
    Inventor: Karl BEHRISCH
  • Publication number: 20140325853
    Abstract: A power tool has a cutting element driven by a motor assembly for performing a cut on a workpiece, the motor assembly further driving a fan for flowing air over the motor assembly. The power tool further includes a foot plate configured to be supported on a workpiece, the foot plate defining an opening through which the cutting element extends to perform the cut, and at least one alignment opening arranged relative to the cutting element opening to allow the operator to visualize the cut line of the cut created by the cutting element therethrough. A motor housing is provided that supports the motor assembly on the foot plate, in which the motor housing defines a cavity substantially enclosing the motor assembly and arranged to receive airflow from the fan. A nozzle is defined in the motor housing that is configured to direct airflow from the cavity of the motor housing in an airflow line of action intersecting the at least one alignment opening.
    Type: Application
    Filed: May 2, 2014
    Publication date: November 6, 2014
    Applicant: Robert Bosch Tool Corporation
    Inventor: Michael J. Lawlor
  • Publication number: 20140283394
    Abstract: A power tool includes a housing, a motor, and a drive mechanism. The drive mechanism includes a driven gear that is rotated by the motor. The driven gear is vertically-oriented within the housing and has an upper portion and a lower portion. The drive mechanism also includes a connecting rod coupled to the driven gear to translate rotary motion of the driven gear into reciprocating motion, and an output shaft coupled to the connecting rod to reciprocate relative to the housing through a cutting stroke and a return stroke. The drive mechanism further includes a counterweight coupled to the driven gear for rotation with the driven gear. The counterweight moves through the upper portion of the driven gear during the cutting stroke of the output shaft, and moves through the lower portion of the driven gear during a return stroke of the output shaft.
    Type: Application
    Filed: June 5, 2014
    Publication date: September 25, 2014
    Inventors: Joshua Adams, Ryan J. Denissen
  • Publication number: 20140245620
    Abstract: A portable power tool actuating element for a jigsaw includes a bar-shaped handle that is intended to provide, at least indirectly, an on and off function for the power tool drive unit that drives at least one tool. A tool speed, in particular a tool stroke rate, is regulatable by the at least one portable power tool actuating element. A jigsaw includes the portable power tool actuating element. A method is provided for operating such a jigsaw.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 4, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Marcel Fankhauser, Michael Uebelhart, Miguel Da Costa, Aldo Di Nicolantonio, Andre Hoffmann
  • Publication number: 20140238212
    Abstract: A saw guide is attached to a circular saw to help make straight, accurate cuts along a line a desired distance from an edge of an object, such as a piece of wood. The guide includes a fence that can fold up by one or more hinges to store the fence out of the way when not in use, allowing the saw to be used like a conventional saw. The fence can be pivoted down, extending at about a 90 degree angle from the saw base, generally parallel to the radius of the saw blade. The distance from the saw blade and the fence can be adjusted and locked into place to make a cut having a desired width.
    Type: Application
    Filed: February 22, 2013
    Publication date: August 28, 2014
    Inventor: Kevin Lee Strand
  • Patent number: 8813375
    Abstract: In a handheld cutting machine that is constructed such that a user holds the machine by hand and performs cutting processing while moving the same, in which a lower portion of a circular cutting blade protruded from a lower surface side of a base that is placed on a cutting object is covered by a movable cover, an enough clearance is set between a supporting annular ring of a movable cover and a rotating boss portion of a bearing box in order to smoothly open and close the movable cover while a ring spring is interposed between the supporting annular portion and an axial restricting portion to increase dust-proofness of the a movable cover support portion.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: August 26, 2014
    Assignee: Makita Corporation
    Inventor: Michio Okumura
  • Patent number: 8776384
    Abstract: A depth of cut scale is provided for a circular saw having a foot, a pivoting assembly (including a rotary saw blade) pivotably mounted to the foot, and a depth of cut adjustment mechanism operable to lock the pivoting assembly at a depth of cut (DOC) orientation relative to the foot. The depth of cut scale includes a shelf associated with and pivotable with the pivoting assembly. The shelf includes an upper surface bearing indicia indicative of DOC. An elongated element is fixed at one end relative to the pivoting assembly and includes a pointer adjacent an opposite end arranged to point to the indicia on the upper surface. The pointer is fixed in relation to the shelf as the shelf pivots with the pivoting assembly. The elongated element may be a flexible element that is maintained in tension overlaying the upper surface, or a cantilevered arm.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: July 15, 2014
    Assignee: Robert Bosch GmbH
    Inventor: James Richard Hartmann
  • Publication number: 20140157608
    Abstract: A circular saw includes a motor, a blade, a blade guard, and at least one panel. The blade is attached to the motor so as to be driven by the motor during a cutting operation. The blade guard is configured to at least partially cover the blade. The blade guard includes a leading portion and a guard lower edge. The at least one panel is substantially composed of substantially transparent scratch-resistant material and is coupled to the blade guard. The at least one panel is coupled to the blade guard such that a lower edge of the panel is adjacent to the guard lower edge.
    Type: Application
    Filed: December 10, 2013
    Publication date: June 12, 2014
    Applicants: Robert Bosch GmbH, Robert Bosch Tool Corporation
    Inventors: Noel Francis, Brady Groth, Marco Laubach
  • Publication number: 20140150269
    Abstract: A power tool includes a motor, a foot plate, a detent system, and an accessory. The motor is configured to move a saw blade in a repeating pattern of movement. The foot plate defines a saw blade opening and includes a guide surface that defines a storage space. The detent system is supported by the foot plate and has a detent member. The accessory defines (i) a first detent structure configured to receive the detent member therein, and (ii) a second detent structure configured to receive the detent member therein. The accessory is positionable between (i) a use position in which the accessory is spaced apart from the foot plate, and (ii) a storage position in which the accessory is located in the storage space.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicants: Robert Bosch GmbH, Robert Bosch Tool Corporation
    Inventor: Dennis Powell
  • Publication number: 20140150270
    Abstract: A power tool includes a motor, a foot plate, a biasing element, and an accessory. The motor is configured to move a saw blade in a repeating pattern of movement. The foot plate defines a saw blade opening. The foot plate has a first lateral wall and a second lateral wall that are spaced apart from each other so as to define a storage space. The biasing element is supported by the foot plate and has a detent. The accessory defines a detent recess configured to receive the detent therein. When the accessory is located in the storage space, so that the detent is received in the detent recess, the accessory is interposed between the anti-tilt structure and the foot plate.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicants: Robert Bosch GmbH, Robert Bosch Tool Corporation
    Inventor: Dennis Powell
  • Patent number: 8726526
    Abstract: A portable cutting machine is provided with a cutting machine main body, a surface plate rotatably supported by the cutting machine main body, a saw blade supported by the cutting machine main body rotatably around a first axis, and a lower guard supported by the cutting machine main body rotatably around a second axis. The first axis is located on one side of the surface plate. A part of the saw blade passes through an opening portion formed to penetrate through the surface plate and is exposed to the other side of the surface plate. The part of the saw blade exposed to the other side is covered by the lower guard. The first axis is parallel to the second axis. The first axis is located closer to a side of the surface plate than the second axis.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: May 20, 2014
    Assignees: Max Co., Ltd., Ryobi Ltd.
    Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
  • Patent number: 8714064
    Abstract: A power tool, particularly a hand-held power tool, is provided with a sensor unit for sensing an observation area on the workpiece side with varying resolution and having arranged in front of it a lens system with lenses of varying focal length.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: May 6, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Thilo Koeder, Joachim Platzer, Ulli Hoffmann
  • Patent number: 8667694
    Abstract: A power tool includes a power source, a speed change mechanism and a tip tool wherein the speed change mechanism has first and second rotating shafts arranged in parallel, a first power transmission passage equipped with a first gear train and a first clutch, and a second power transmission passage equipped with a second gear train and a second clutch. The speed change mechanism is constituted to switch the transmission passage between the first power transmission passage and the second power transmission passage while keeping the first and second gear trains in meshed state by switching the first and second clutches between power transmission state and power interruption state depending on a load applied to the tip tool.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: March 11, 2014
    Assignee: Makita Corporation
    Inventors: Manabu Tokunaga, Ryu Hashimoto
  • Publication number: 20140053417
    Abstract: A power tool system includes at least one power tool separation device and at least one portable power tool. The power tool separation device includes at least one cutting unit and at least one guide unit which forms a closed system at least together with the cutting unit. The portable power tool includes a motor unit configured to be coupled to the cutting unit of the power tool separation device. At least in the mounted state, a longitudinal axis of the motor unit extends at least essentially perpendicular to the longitudinal axis of the guide unit.
    Type: Application
    Filed: March 2, 2012
    Publication date: February 27, 2014
    Inventor: Rudolf Fuchs
  • Publication number: 20140033547
    Abstract: A power tool includes a housing having a handle configured for a user, the handle defining a first axis, a motor supported by the housing, the motor defining a second axis along a length of the motor, a tool element movably supported by the housing and drivingly coupled to the motor, the tool element defining a third axis along a length of the tool element. Each of the first, second, and third axes are oblique with respect to each of the other axes.
    Type: Application
    Filed: October 9, 2013
    Publication date: February 6, 2014
    Applicant: Milwaukee Electric Tool Corporation
    Inventors: Daniel J. Alberti, John S. Scott, Michael S. Steele, Roger D. Neitzell, Michael Naughton, Michael W. Phillips, Andrew Batterman
  • Patent number: 8510961
    Abstract: The invention of this application relates to a hand or power tool which can be used as a planer such that the movement of the tool along a workpiece causes a portion of the material of the workpieces to be removed by at least one cutter blade provided on the tool at a baseplate of the tool which contacts with the workpiece. The tool is provided with at least one movable portion which can be moved with respect to the baseplate and hence the tool. The movable portion can be angularly movable to allow a chamfer cut to be accurately achieved and/or can be slidably movable with respect to the baseplate so a to protrude from an edge thereof to allow greater cutting accuracy to be achieved. In a further embodiment the movement portion can be provided so as to be moved to allow user access to at least one debris conduit.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: August 20, 2013
    Assignee: Power Box AG
    Inventor: Marcus Nicholson
  • Publication number: 20130185947
    Abstract: A circular saw includes a footplate and an upper guard coupled to a saw blade. The footplate has a width between two lateral edges in a direction perpendicular to the saw blade. The upper guard has a radius extending from the axis of the blade to the outermost surface of the upper guard in the radial direction. A DC brushless motor is drivingly coupled to the saw blade and is disposed above the footplate. The motor has a rotational axis within forty five degrees of parallel to the width of the footplate, or within forty five degrees of parallel to the radius of the upper guard. The motor extends towards one of the lateral edges of the footplate in the width direction, or towards the outermost surface of the upper guard in the radial direction.
    Type: Application
    Filed: September 4, 2012
    Publication date: July 25, 2013
    Applicant: Robert Bosch GmbH
    Inventors: Andrew Stuart Barkley, Jonathan Richard Wray, James Earl Fleeger, Ernest John Fischer
  • Publication number: 20130145632
    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: Application
    Filed: December 7, 2012
    Publication date: June 13, 2013
    Applicant: CHERVON (HK) LIMITED
    Inventor: Chevron (HK) Limited
  • Publication number: 20130145631
    Abstract: A palm electric tool includes a housing adapted for palm gripping, a base connected to the housing for contacting with a workpiece and supporting the palm electric tool, a motor with an output shaft arranged within the housing. The output shaft is substantially parallel to the base. A transmission mechanism is connected to the output shaft of the motor which includes a slide bar. The slide bar is capable of being moved in a direction perpendicular to the output of the motor, a blade is connected to the slide bar which is positioned substantially perpendicular to the output of the motor and the base. A battery pack for powering the motor is inserted into the housing. An inserting direction of the battery pack is substantially parallel to the output shaft of the motor. The battery pack is positioned between the motor and the base and partially overlapped with the motor in a direction perpendicular to the base.
    Type: Application
    Filed: October 17, 2012
    Publication date: June 13, 2013
    Applicant: CHERVON (HK) LIMITED
    Inventor: CHERVON (HK) LIMITED
  • Publication number: 20130133210
    Abstract: A power tool includes a motor housing having a motor configured to rotate an output shaft about a drive axis and a gear housing defining a gear compartment. A pinion gear is supported by the gear housing that is coupled to the output shaft for rotation about the drive axis. A bevel gear is supported by the gear housing for rotation about a bevel axis perpendicular to the drive axis, the bevel gear being meshingly engaged with the pinion gear. A crank pin extends from the bevel gear at a position offset from the bevel axis. An articulating housing is pivotably supported by the gear housing for pivotal movement about the bevel axis. A plunger member is supported by the articulating housing for reciprocating movement along a reciprocating axis. The plunger member includes a yoke end portion coupled to the crank pin. The reciprocating axis and the drive axis reside in the same plane throughout pivotal movement of the articulating housing with respect to the gear housing.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Applicants: ROBERT BOSCH GMBH, ROBERT BOSCH TOOL CORPORATION
    Inventors: J. Alan Weir, Dan Williams, Ron Llanes, Steve Oshgan, Peter Wierzchon
  • Publication number: 20130097878
    Abstract: A hand-held cutting tool may include a handle and a battery pack. The handle has a rear portion with respect to a work proceeding direction along which the cutting tool is moved for performing a cutting operation. When the battery pack is mounted to the rear portion of the handle, the longitudinal direction of the battery pack extends non-parallel with the work proceeding direction.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 25, 2013
    Applicant: MAKITA CORPORATION
    Inventor: MAKITA CORPORATION
  • Patent number: 8424213
    Abstract: A circular saw has a housing, a direct current motor, a battery assembly, a handle having first and second ends, a circular saw blade and a base plate. The motor is located outside of an area defined by the radius of the circular blade and between the first and second ends of the handle and the blade is laterally aligned with the handle. The circular saw also has a center of gravity which lies close to the plane defined by the saw blade, is below the handle and is within the length of the base plate. As a result of this arrangement, the circular saw of the present invention reduces the influence of the torque created during a cutting operation and improves the balance and operation of the circular saw.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: April 23, 2013
    Assignee: Chervon Limited
    Inventor: Masatoshi Fukinuki
  • Publication number: 20130081284
    Abstract: A saw and guide apparatus includes a saw assembly and a cutting guide. The saw assembly includes (i) a drive member configured to be moved in a repeating pattern, (ii) a motor configured to move the drive member in the repeating pattern, (iii) a housing defining an interior space in which the motor is positioned, (iv) a foot including a base defining a cutting member opening therein, the base further defining a lower base surface, (v) a cutting member secured to the drive member so that the cutting member extends through the cutting member opening, and (vi) a guard attached to the housing and defining a cutting wheel space in which the cutting wheel is at least partially positioned.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicants: Robert Bosch Tool Corporation
    Inventor: Jaime Moreno
  • Publication number: 20130019483
    Abstract: A jigsaw includes a housing having a body portion and a handle portion. The body portion has a forward end and a rearward end. The jigsaw also includes a motor positioned within the body portion of the housing. The motor is located forward of the handle portion. The jigsaw further includes a drive mechanism positioned within the body portion of the housing. The drive mechanism is coupled to the motor for driving a saw blade in a reciprocating motion. The jigsaw also includes a shoe assembly coupled to the body portion of the housing between the forward end and the rearward end.
    Type: Application
    Filed: March 30, 2012
    Publication date: January 24, 2013
    Inventors: Michael Naughton, Troy C. Thorson, Sean T. Kehoe, Steven G. Melnyk
  • Publication number: 20120272799
    Abstract: A reciprocating saw includes a carrier operable to cooperate with a motor to translate rotational movement of the motor into reciprocal linear actuation of a saw blade. A carrier is slidably disposed within the housing and includes a first portion adapted to receive a saw blade and a second portion having a slot therethrough. A rotatable element is fixed for rotation about an output shaft of the motor. A follower operably interconnects the carrier and the rotatable element wherein rotation of the rotatable element provides reciprocal linear motion of the carrier whereby the follower follows a reciprocal linear path within the slot.
    Type: Application
    Filed: October 21, 2011
    Publication date: November 1, 2012
    Applicant: BLACK AND DECKER INC.
    Inventors: Thomas J. Wheeler, Terry L. Turner, William G. Harman, JR., Earl Kelican
  • Publication number: 20120227271
    Abstract: A tool device, in particular a jigsaw device, includes at least one guide unit for at least partially guiding at least one machine body and/or a workpiece processing motion. The tool device further includes at least one alignment detection unit for detecting an alignment of the guide unit relative to a motor housing and/or relative to a tool receiving unit.
    Type: Application
    Filed: July 15, 2010
    Publication date: September 13, 2012
    Applicant: Robert Bosch GmbH
    Inventors: Sebastian Krieger, Thilo Koeder, Joachim Platzer, Ulli Hoffmann
  • Publication number: 20120023760
    Abstract: A circular saw, in particular hand circular saw, is disclosed. The circular saw has a workpiece support surface, a saw blade and a protective cover, which covers the saw blade in a region above a workpiece to be processed. The protective cover has such a geometry and position with respect to the saw blade that a straight line, which originates from the first deflection of a tangent applied at the intersection of the saw blade circumference with the workpiece support surface from the protective cover encloses an angle of up to 30°, in particular up to 20°, with a line perpendicular to the workpiece support surface.
    Type: Application
    Filed: July 28, 2011
    Publication date: February 2, 2012
    Applicant: Hilti Aktiengesellschaft
    Inventor: Guenter HAAS
  • Publication number: 20120011731
    Abstract: A portable cutting machine is provided with a cutting machine main body (3), a surface plate (6) rotatably supported by the cutting machine main body (3), a saw blade (1) supported by the cutting machine main body (3) rotatably around a first axis (O1), and a lower guard (25) supported by the cutting machine main body (3) rotatably around a second axis (O2). The first axis (O1) is located on one side of the surface plate (6). A part of the saw blade (1) passes through an opening portion (24) formed to penetrate through the surface plate (6) and is exposed to the other side of the surface plate (6). The part of the saw blade (1) exposed to the other side is covered by the lower guard (25). The first axis (O1) is parallel to the second axis (O2). The first axis (O1) is located closer to a side of the surface plate (6) than the second axis (O2).
    Type: Application
    Filed: March 5, 2010
    Publication date: January 19, 2012
    Applicants: RYOBI LTD., MAX CO., LTD.
    Inventors: Kazunobu Yoshimura, Tomofumi Ichiba, Takuma Nonaka, Atsuhito Okada
  • Patent number: 8037610
    Abstract: A powered vinyl groover includes a motor attached to a circular blade and a blade housing for covering the circular blade. The blade housing includes a duct to carry cuttings into a collection bag. Near an inlet hole of the duct is a fin, which may be a raised surface on any interior wall of the blade housing extending into the blade housing as close as possible to the blade. The fin causes airflow from the blade to be redirected towards the inlet hole of the duct so that more cuttings enter the duct and are carried by the duct through to an outlet hole to a collection bag mountable over the outlet hole of the duct. The fin may be integral with the blade housing or attached to it, and a fin may also be added to existing groovers.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: October 18, 2011
    Assignee: Crain Cutter Co., Inc.
    Inventor: Gregory Joseph Chambers
  • Publication number: 20110219628
    Abstract: A power tool includes a motor, a cutting element operably coupled to the motor and configured to remove material from a workpiece, a base configured to support the cutting element relative to the workpiece, and a receptacle positioned beneath the base and configured to be positioned beneath the workpiece to collect debris generated by the cutting element beneath the workpiece as material is removed from the workpiece.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 15, 2011
    Inventors: Ryan Harrison, Robert E. McCracken
  • Publication number: 20110214303
    Abstract: A cutting tool includes a tool unit including an electric motor, a rotary cutting blade rotatably driven by the electric motor, and a blade case covering at least apart of the rotary cutting blade. An electric component is disposed within the blade case at a position capable of being cooled by a flow of air produced by the rotation of the rotary cutting blade.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 8, 2011
    Applicant: MAKITA CORPORATION
    Inventor: Hirotomo INAYOSHI
  • Publication number: 20110185581
    Abstract: A circular saw includes a housing, a motor having a rotating axis and a center of gravity on the rotating axis, a handle, a circular blade, a fixed guard, and a base plate having a width supporting the housing. The motor and the circular blade are parallel or coplanar with respect to each other and the circular saw does not extend beyond the width of the base plate in the width direction.
    Type: Application
    Filed: July 13, 2010
    Publication date: August 4, 2011
    Applicant: Chervon Limited
    Inventors: Li Xing, Yibao Zhang, Feng Zhang
  • Publication number: 20110154670
    Abstract: A power tool includes a power source, a speed change mechanism and a tip tool wherein the speed change mechanism has first and second rotating shafts arranged in parallel, a first power transmission passage equipped with a first gear train and a first clutch, and a second power transmission passage equipped with a second gear train and a second clutch. The speed change mechanism is constituted to switch the transmission passage between the first power transmission passage and the second power transmission passage while keeping the first and second gear trains in meshed state by switching the first and second clutches between power transmission state and power interruption state depending on a load applied to the tip tool.
    Type: Application
    Filed: June 9, 2009
    Publication date: June 30, 2011
    Applicant: MAKITA CORPORATION
    Inventors: Manabu Tokunaga, Ryu Hashimoto
  • Patent number: 7963043
    Abstract: A reciprocating saw includes a housing and a support shoe mounted on the front end of the housing which is adjacent to a saw blade. The support shoe includes a guide plate which is partly mounted in the housing and is movable thereabout, and a base plate pivotally connected to the guide plate. The guide plate has a series of recesses or apertures. The reciprocating saw also includes a locking member which is movable in the housing along a first direction and at least a portion of which could be engaged with any one of the recesses or apertures, and an adjusting member which is movable along a direction perpendicular to the first direction from a first position to a second position. The locking member is disposed between the adjusting member and the guide plate.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: June 21, 2011
    Assignee: Chervon Limited
    Inventor: Yasheng Chen
  • Publication number: 20110119933
    Abstract: The invention relates to a power tool (1), which is designed as a jigsaw (2) and which comprises a rear support (2) for the saw blade (8) at a right angle to the rotational axis (22) of the saw blade (8). Said driven support (20) allows adjustment of the saw blade (8) in different angular positions in the rotational direction around its rotational axis (22).
    Type: Application
    Filed: March 16, 2009
    Publication date: May 26, 2011
    Applicant: Robert Bosch GMBH
    Inventors: Hans Kaiser, Thilo Koeder, Joachim Platzer, Ulli Hoffmann, Jan Koegel
  • Publication number: 20110083330
    Abstract: An accessory for a reciprocating saw, having a blade configured to cut a workpiece and a shoe including a guiding surface for engaging the workpiece, includes a body having a first face and a second face opposite the first face. The body includes a member proximate the second face for coupling the accessory to the shoe. A guiding surface is defined on the first face of the body for engaging a workpiece and an opening is formed in the body for receiving the blade. The guiding surface constitutes a modified surface configured to differ from the guiding surface of the shoe by at least one characteristic.
    Type: Application
    Filed: June 3, 2009
    Publication date: April 14, 2011
    Inventors: Michael S. Steele, Timothy Kenney, Steven F. Thiel
  • Publication number: 20110078904
    Abstract: A portable conduit cutter for attaching to a power tool is disclosed. The portable conduit cutter includes a plate for use in attaching the conduit cutter to the different power tools. The plate may be adapted to fit different power tools depending upon the attachment requirements of the particular power tool. A compression spring and spring can assembly may be attached to a jaw slide and used to allow the jaw slide to move parallel with respect to the plate.
    Type: Application
    Filed: October 5, 2009
    Publication date: April 7, 2011
    Applicant: ETCON CORP.
    Inventor: Luigi Edmondo Lucente
  • Publication number: 20110067248
    Abstract: The invention relates to a power tool (1), especially in the form of a hand-held jigsaw (2). In order to allow for a semi-autonomous operation which assists the user to guide the tool, the tool is provided with a sensor system (27) for observing a detection surface (31, 43) within which the desired working direction is detected as a path default (23) for the saw blade (8) serving as the tool (7) with respect to its alignment relative to the jigsaw (2), the detected path default being intended for downstream control means (26). Said control means align the saw blade (8) relative to the path default (23) by rotating it about its longitudinal axis (25) so that the user guiding the saw blade (2) only has to make sure that the path default (23) extends inside the detection surface (31, 43).
    Type: Application
    Filed: March 16, 2009
    Publication date: March 24, 2011
    Inventors: Thilo Koeder, Joachim Platzer
  • Patent number: 7856723
    Abstract: A footplate for a power tool for guiding the tool along a guide, the footplate having on its lower surface at least one dual-restriction , wherein the first part of the dual-restriction is for engaging a rail extending in a longitudinal direction of a first guide on the upper surface of said first guide and the second part of the dual-restriction is for engaging a rail extending in a longitudinal direction of a second different guide on the upper surface of said second guide, where the first and second parts of the or each dual-restriction each has a fixed side wall, and where the first and second parts of the or each dual-restriction have an adjustable side wall arranged opposite to a respective fixed side wall.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: December 28, 2010
    Assignee: Black & Decker Inc.
    Inventors: Roger Thomas, Scott Keenlyside, Joanne Rogers
  • Publication number: 20100299943
    Abstract: A circular saw has a housing, a direct current motor, a battery assembly, a handle having first and second ends, a circular saw blade and a base plate. The motor is located outside of an area defined by the radius of the circular blade and between the first and second ends of the handle and the blade is laterally aligned with the handle. The circular saw also has a center of gravity which lies close to the plane defined by the saw blade, is below the handle and is within the length of the base plate. As a result of this arrangement, the circular saw of the present invention reduces the influence of the torque created during a cutting operation and improves the balance and operation of the circular saw.
    Type: Application
    Filed: May 25, 2010
    Publication date: December 2, 2010
    Inventor: Masatoshi Fukinuki
  • Publication number: 20100288259
    Abstract: A skid plate for a concrete saw is integrally cast having two end mounting portions and a middle portion with a slot in the middle portion. A horizontal slot in a leading end mounting portion cooperates and a vertical slot in the trailing end portion releasably engage pins on the saw to allow the skid plate to be easily fastened to and removed from the saw. A spring loaded latch mechanism holds the pins in the slots.
    Type: Application
    Filed: July 19, 2010
    Publication date: November 18, 2010
    Inventors: Charles E. Markley, Deo M. Magakat
  • Publication number: 20100269353
    Abstract: A portable cutting device having a cutting tool for cutting a material. The cutting device includes a motor driving the cutting tool and a shroud at least partially enclosing the cutting tool. The shroud defines a debris accumulation chamber for gathering debris created by the cutting tool cutting the material. An impeller is operatively coupled to the motor and driven by the motor to create suction pressure to draw the debris out of the debris accumulation chamber and into a collection bag.
    Type: Application
    Filed: April 26, 2010
    Publication date: October 28, 2010
    Inventor: Charles B. Martin
  • Publication number: 20100229404
    Abstract: An assembled footplate for hand-held machine tools, in particular power hacksaws, has a bottom sliding plate and a cover part, which together form a housing enclosure for a connecting element.
    Type: Application
    Filed: September 2, 2008
    Publication date: September 16, 2010
    Inventors: Joachim Schadow, Paul Stooss, Simon Haas
  • Publication number: 20100192389
    Abstract: An electric cutting tool 100 includes: a body portion 2 accommodating a driving portion 6 for rotating a circular saw blade 1 and a power transmission mechanism for transmitting a power of the driving portion to the circular saw blade; and a surface table 5 supporting the body portion 2, in which the circular saw blade 1 is supported by a shaft 1a that is disposed between a shaft 6a of the driving portion 6 and the surface table 5. In such electric cutting tool 100, the power transmission mechanism is provided with a pair of helical gears 7c, 7d arranged on the same shaft, and the paired helical gears 7c, 7d have tooth traces directed in a same direction. According to such structure, in the electric cutting tool 100, thrust load can be reduced.
    Type: Application
    Filed: October 26, 2006
    Publication date: August 5, 2010
    Applicant: Ryobi Ltd
    Inventors: Atsuhito Okada, Katsutoshi Kouchiyama