Interrelated Tool Actuating Means And Guard Means Patents (Class 83/397)
  • Patent number: 9636762
    Abstract: A desk-top cutting machine including: a base configured to support a workpiece; a cutting part including, a motor configured to rotary drive a cutting tool, a main cover covering an upper portion of the cutting tool, and a protective cover covering a portion of the cutting tool that is not covered by the main cover, the protective cover configured to move in a direction of exposing the cutting tool when the cutting part swings toward a bottom dead point from a top dead point; and a cutting part support mechanism configured to swingably support the cutting part, characterized in that: the motor is configured to be rotated at a first rotational speed slower than a maximum rotational speed thereof when the cutting part is positioned at the top dead point.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: May 2, 2017
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Hideaki Terashima, Takuya Konnai
  • Patent number: 9533362
    Abstract: A miter saw including a base having a plurality of grooves formed in a bottom surface thereof, a table rotatable with respect to the base, a rotary indexing mechanism and a locking mechanism. The rotary indexing mechanism includes a body fixedly connected to and rotatable with the table and a protrusion provided on the body. The protrusion can be received within one of the plurality of grooves in the base and thereby angularly index the table at a desired position with respect to the base. The locking mechanism is operably coupled to the table and is configured to lock the table at the desired position. The miter saw has a more reasonable and practical structure that allows angular indexing and interlocking of the table with respect to the base to be accomplished by a single hand.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: January 3, 2017
    Assignee: Ken Holding Co., Ltd.
    Inventor: Mingting Wu
  • Patent number: 9517516
    Abstract: A power equipment in one embodiment includes a swing arm assembly movable along a swing arm path between a first swing arm position adjacent a latch hold mechanism and a second swing arm position spaced apart from the latch hold mechanism, a shroud portion mounted on the swing arm assembly and configured to partially enclose a shaping device when the shaping device is mounted on the swing arm assembly, and a hose system configured such that when a hose system inlet plenum is aligned with a shroud portion outlet plenum, dust from the shroud portion outlet plenum is passed to the hose system inlet plenum and the hose system inlet plenum does not interfere with movement of the swing arm assembly along the swing arm path.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: December 13, 2016
    Assignees: Robert Bosch Tool Corporation, Robert Bosch GmbH
    Inventor: Robert S. Doumani
  • Patent number: 9476170
    Abstract: A shield system for a hydrodemolition apparatus has a loop whose ends are secured to opposite sides of a reciprocating nozzle carrier. The loop may be supported by a supporting structure surrounding the frame along which the nozzle carrier reciprocates. The loop overlays portions of one or more gaps through which one or more nozzles extend to work an underlying surface. The nozzles have access to the underlying surface through the gaps under the nozzle carrier, but the balance of the gaps are covered by the loop which is drawn or pushed by the nozzle carrier during reciprocation.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: October 25, 2016
    Assignee: MAC & MAC HYDRODEMOLITION INC.
    Inventors: Gerard J. MacNeil, David B. MacNeil, Gordon MacNeil, Vernon Bose, Jesse MacNeil, Brett MacNeil, Edward van Gool
  • Patent number: 9446530
    Abstract: The present invention provides a mandolin slicer adjustable for slicing item in variable thicknesses and variable shapes, wherein the adjustment is enabled by a ballpoint pen ratchet mechanism provided on the mandolin slicer. The mandolin slicer of the present invention further comprises an indicating mechanism to clearly indicate the selected thickness and shape of the sliced item.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: September 20, 2016
    Assignee: KING'S FLAIR DEVELOPMENT LTD.
    Inventor: Siu Wah Wong
  • Patent number: 9296115
    Abstract: The present invention provides a cheese slicer adjustable for slicing cheese in variable thicknesses, comprising a handle; a guiding plate pivotally connected to the handle; a slicing plate having a slicing blade, wherein the slicing blade and the guiding plate together define a gap as slice thickness; a linkage movably resting against the guiding plate so that the movement of the linkage enables the guiding plate to pivot around the handle relative to the slicing blade thereby to provide variable slice thickness for the item to be sliced; an actuator assembly in operative connection with the linkage to move the linkage on the guiding plate. The cheese slicer of the present invention further comprises an indicating mechanism to clearly indicate the selected thickness of the sliced cheese.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: March 29, 2016
    Assignee: King's Flair Development Ltd.
    Inventor: Siu Wah Wong
  • Publication number: 20150020665
    Abstract: A cutting machine can include a cutting machine body that is movably supported above a table and capable of vertical movement, the cutting machine body can be positioned at an upward waiting position and a lower end position. The cutting machine body can include an auxiliary cover positioned around a portion of a blade and including a projection. When in the upward waiting position the auxiliary cover is not able to move upward because of the position of the projection, and in the lower end position the auxiliary cover is able to move upward.
    Type: Application
    Filed: October 9, 2014
    Publication date: January 22, 2015
    Inventor: Masahiko INAI
  • Patent number: 8887606
    Abstract: A cutting machine can include a cutting machine body that is movably supported above a table and capable of vertical movement, the cutting machine body can be positioned at an upward waiting position and a lower end position. The cutting machine body can include an auxiliary cover positioned around a portion of a blade and including a projection. When in the upward waiting position the auxiliary cover is not able to move upward because of the position of the projection, and in the lower end position the auxiliary cover is able to move upward.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: November 18, 2014
    Assignee: Makita Corporation
    Inventor: Masahiko Inai
  • Patent number: 8862182
    Abstract: A portable electronic device comprises an electromechanical module having an actuator for positioning a mechanical element between first and second positions, and a controller coupled to the electromechanical module. The controller is configured to detect a mechanical event coupling to the electromechanical module, select an actuation signal to position the mechanical element in a safe position between the first and second positions, and transmit the selected signal, such that the mechanical element is positioned in the safe position during the event.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: October 14, 2014
    Assignee: Apple Inc.
    Inventors: Ashutosh Y. Shukla, David A. Pakula, Sawyer I. Cohen
  • Publication number: 20140260860
    Abstract: A safety component is provided for a power saw that includes a rear guard pivotably mounted to the saw assembly. The rear guard is generally U-shaped to straddle the cutting blade in a deployed position. The rear guard includes arms that contact the workpiece during the cutting operation so that as the saw blade moves downward to perform the cut the rear guard pivots upward while maintaining protection of the rear portion of the saw blade.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicants: Robert Bosch GmbH, Robert Bosch Tool Corporation
    Inventor: Plamen V. Marinov
  • Publication number: 20140174272
    Abstract: A power saw includes a base portion, a support assembly, a cutting arm, a blade guard, a linkage arm, and a biasing member. The support assembly is supported by the base portion. The cutting arm is supported by the support assembly and is configured to rotatably support a saw blade. The cutting arm is movable between a lower position adjacent to the base portion and an upper position spaced apart from the base portion. The blade guard is rotatably supported by the cutting arm and is configured to receive a portion of the saw blade therein. The linkage arm includes a first end portion pivotally connected to the blade guard, and a second end portion movably supported by the support assembly. The biasing member is operably connected to the second end portion and is configured to bias the linkage arm.
    Type: Application
    Filed: December 22, 2012
    Publication date: June 26, 2014
    Applicants: Robert Bosch GmbH, Robert Bosch Tool Corporation
    Inventor: Patrick Eiswerth
  • Patent number: 8651000
    Abstract: The invention relates to a cutting device for slicing food products, comprising a driven circular blade rotating about a blade axis revolving on a track about a center axis, and a cover element rotatable relative to the circular blade on the side of the circular blade facing away from a product to be sliced. A holding device is provided that is designed for counteracting the self-rotation of the cover element about the blade axis.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: February 18, 2014
    Assignee: Weber Maschinenbau GmbH Breidenbach
    Inventor: Günther Weber
  • Patent number: 8631731
    Abstract: A knife holder device for a microtome having a blade guard constituted as a pivotable bow, wherein, in a protective position, the blade guard is disposed on the side of the knife facing away from the sample at a distance such that access to the cutting edge is not possible. The blade guard can be positioned in three different defined positions and is provided with elements that have the following effects depending on the position: in the upper, protective position, simultaneous fixing of the position of the knife holder in the guideway; in the central, knife-holder-sliding position, accessibility to the knife holder with simultaneous release of the position fixture of the knife holder in the guideway; and in the lower, knife-changing position, free accessibility to the knife holder with simultaneous fixture of the position of the knife holder in the guideway.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: January 21, 2014
    Assignee: Microm International GmbH
    Inventor: Reiner Fank
  • Patent number: 8511211
    Abstract: A power miter saw of the type which has an upper fixed blade guard and a lower swinging blade guard for covering the lower reach of an installed blade when the saw is in its rest position and for exposing the lower reach of the saw blade when moved to its operational position, the saw comprising an adjustable length elongated linkage mechanism interconnecting a frame support and the lower blade guard for moving the lower blade guard in response to movement of the saw between the rest and operational positions, such that the lower blade guard covers the lower reach of the blade when the saw is in its rest position and uncovers the blade when the saw is moved to its operational position, the linkage mechanism permitting the exposure of a blade arbor to facilitate changing of the blade.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: August 20, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Matthew Cox
  • Patent number: 8474674
    Abstract: The invention is directed to a pill cutter that has a protected cutting edge. The pill cutter includes a guard, a base, and a cover. The components are arranged such that the guard slides over the cutting edge when the pill cutter is in an open position and the guard exposes the cutting edge when the pill cutter is in a closed position. The invention is also directed at a method for assembling the pill cutter and a method of using the pill cutter to cut a pill or tablet.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: July 2, 2013
    Assignee: Apothecary Products, Inc.
    Inventor: Ka Chuen Sze
  • Patent number: 8266994
    Abstract: Embodiments of a power miter saw of the type which has an upper fixed blade guard for encasing upper reaches of an installed saw blade without encasing the blade arbor, and a lower swinging blade guard for covering the lower reaches of an installed blade when saw is in its rest position and for exposing the saw blade when moved to its operational position, the saw comprising an elongated linkage mechanism having opposite end portions interconnecting a frame support and the lower blade guard for moving the lower blade guard in response to movement of the saw between the rest and operational positions, such that the lower blade guard covers the lower reaches of the blade when the saw is in its rest position and uncovers the lower reaches of the blade when the saw is moved to its operational position, the linkage mechanism being configured to be selectively detachable from the frame support, thereby enabling the lower blade guard to be placed in at least first and second positions wherein the first position enab
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: September 18, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Matthew D. Cox
  • Patent number: 8151678
    Abstract: A board shaped mandolin slicer includes a folding leg for stability in an angled orientation, and a “dead mans handle” for to enable exposure of the blade and adjustable thickness slicing only upon actuation of the handle. In addition, a spring resist in the handle is used in conjunction with a mechanical position guide limiting switch and angled cam which allows the user to better control the degree to which a platform move forward to expose the front of a main blade, to thus adjust the thickness of the slices uniformly. An additional child safety feature includes a pair of buttons on either side of the housing which need to be urged inwardly at the same time to unlock the mandolin slicer.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: April 10, 2012
    Assignee: Daka Research Inc. (Br. Virg. Isl Corp.)
    Inventors: Pat Y. Mah, Alexander Joshef Kalogroulis, Kwong Keung Tung, Michael Ng
  • Publication number: 20120067185
    Abstract: A circular cross-cut and miter saw has a supporting table and a sawing device, which is pivotable about a cross-cutting axis and has a saw blade and a movable swing guard. During a cross-cutting movement of the sawing device, a swivel mechanism produces a pivoting and/or swiveling movement of the swing guard such that the swing guard can be at least partly opened by swinging the sawing device down and closed by swinging the sawing device up. Uncomfortable and dangerous handling of the swing guard during the cross-cutting movement is avoided by a locking element of the swivel mechanism disposed such that the swing guard can be opened still further, even completely, by hand or by a workpiece to be cut, if either the locking element has been actuated or the cross-cutting movement has already been at least partially carried out.
    Type: Application
    Filed: May 4, 2010
    Publication date: March 22, 2012
    Inventor: Gerhard Weusthof
  • Patent number: 8122798
    Abstract: A power cutting tool includes a cutting surface, a conductive structure, and first electrode matrix comprising an array of electrical conductors. A moveable blade used to cut an object is located on the cutting surface. When at least one electrical conductor of the first electrode matrix is energized relative to the conductive structure, an electric field extends between the at least one electrical conductor and the conductive matrix to detect the presence of an object in proximity to the electric field.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: February 28, 2012
    Assignee: Power Tool Institute
    Inventors: David Shafer, David Titzler, John Gilbert
  • Publication number: 20120006165
    Abstract: A foodstuff slicer includes a support frame carrying a support with a support surface and a slicing blade including a cutting edge situated above the support surface, whereby a foodstuff article may be slid along the support surface into contact with the cutting edge to cut a slice from it. A guard member including at least one guard limb is guided to move transversely to the support surface between an operative position, in which it extends in front of and adjacent to the cutting edge and prevents access to the cutting edge, and an inoperative position, in which it permits access to the cutting edge. A release member is guided to move parallel to the support surface and includes at least one release limb. One of the guard limb and the release limb includes a ramp formation and the other of the guard limb and the release limb includes a follower cooperating with the ramp formation, whereby movement of the release member results in movement of the guard member between the operative and inoperative positions.
    Type: Application
    Filed: March 8, 2011
    Publication date: January 12, 2012
    Inventor: Andrew Thornton
  • Patent number: 8020477
    Abstract: A cutting machine includes a main body in which a rotary blade is included, a base over which a workpiece is to be placed, and a guide fence mountable to the base. The main body is provided above the base in such a manner that the main body is movable upward and downward, and a longitudinal direction of the guide fence is perpendicular to the rotary blade as viewed from top when the guide fence is mounted to the base. The guide fence provides a guide surface that extends in the longitudinal direction of the guide fence and is configured to be rendered perpendicular to a top face of the base when the guide fence is mounted to the base. The guide fence includes a stopper that is configured to project from the guide surface, to be movable upward and downward, and to be fixed at any level.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: September 20, 2011
    Assignee: Makita Corporation
    Inventor: Syuji Aoyama
  • Patent number: 7905167
    Abstract: A miter saw which prevents deterioration in perpendicularity of a cutting blade to the upper surface of a base part when slide of a pipe is regulated by pressing a pipe. In a miter saw, a pair of pipes support a cutting part, on one end side. On the other end side, the pipes are surrounded and supported slidably by a first slide support part of a support member of a turntable. A virtual plane including the axes of the pair of pipes is substantially parallel to the pivotal direction of a disc saw blade. A first screw is screwed in the first slide support part. An end part of the first screw contacts and presses a pipe. This end part is engaged with the pipe so as to restrict slide of the pipe relative to the first slide support part.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: March 15, 2011
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Shigeharu Ushiwata, Hideaki Terashima, Ryuichi Imamura, Toshihiko Hayashizaki
  • Patent number: 7861632
    Abstract: A knife holder for a microtome has a plate arranged pivotably on its base member, which, in its functional position, covers the cutting edge of the knife and is spaced apart from the cutting plane towards the side of the knife holder remote from the specimen. The plate is also spaced apart from the knife holder on the side of the cutting edge of the knife. The plate precludes gripping of the cutting edge of the knife and a pivoting mechanism for the plate is coupled to a switch. When the plate is pivoted out of the functional position, the motor drive of the cutting movement is locked, or a brake precludes any movement of the knife slide or specimen slide. The plate preferably consists of a transparent material to permit observation of section removal in the functional position.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: January 4, 2011
    Assignee: MICROM International GmbH
    Inventor: Hans Heid
  • Publication number: 20100257990
    Abstract: A power tool having an integrated control system includes a workpiece supporting surface, a cutting instrument extendable above the workpiece supporting surface, a guard assembly securable above the workpiece supporting surface for covering at least a portion of the cutting instrument, the guard assembly having a first state for providing a first level of protection and a second state for providing a second level of protection, a motor coupled with the cutting instrument, and a power switch operable for starting the motor for driving the cutting instrument. The power tool includes a control system in communication with the guard assembly for determining if the guard assembly is in the first state or the second state. Before the motor is started, the control system automatically disables the motor if it determines that the guard assembly is in the second state. The control system includes a bypass switch for enabling starting of the motor when the guard assembly is in the second state.
    Type: Application
    Filed: September 17, 2009
    Publication date: October 14, 2010
    Applicant: Black & Decker Inc.
    Inventors: Craig A. Schell, Robert A. Usselman
  • Patent number: 7802505
    Abstract: A power tool includes a housing assembly having a housing portion and an arm extending upwardly from the housing portion. The arm has an outer surface. The power tool also includes a drive unit supported by the arm. The drive unit is operable to drive a tool element to work on a work piece. The power tool further includes a collection assembly operable to collect debris generated by the tool element working on the work piece. The collection assembly includes a collection chute assembly having an inlet and an outlet. The collection chute assembly is positionable on the arm to define, between the inlet and the outlet, a first path for debris around one side of the outer surface of the arm and a second path for debris around the other side of the outer surface of the arm.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: September 28, 2010
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Jason D. Hetcher, Mark D Willer, Dennis J. Cerney, William A. Elger, Harold L. Papenfuss, Daryl S. Richards, David R. Bauer, Edward T. Gisske, Edward A. Raleigh, Michael E. Weber, Eric Fernandes, David Hlavac, Troy C. Thorson, Michael L. Welliver
  • Patent number: 7779736
    Abstract: A miter saw having a securable positioning structure for a blade guard thereof includes a saw blade, a rotatable handle, a movable blade guard, a control unit, a positioning unit, and a rope. The rotatable handle is provided for the user's holding for the cutting operation. The movable blade guard is shiftable between where it covers the saw blade and where it does not cover the saw blade. The control unit is mounted to the rotatable handle. The positioning unit is provided for blocking the movement of the movable blade guard. The rope is connected with the control unit and the positioning unit. Accordingly, the user only needs to operate the control unit to drive action of the positioning unit via the rope to hold the movable blade guard in position, thus securing the safety of the operation. In addition, the rotatable handle can be turned smoothly without any barrier.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: August 24, 2010
    Assignee: Durq Machinery Corp.
    Inventors: Chia-Sheng Liu, Yi-Li Cheng
  • Patent number: 7752950
    Abstract: An electric miter saw includes a base, a cutting table, a cutting member and a link arm. The cutting table is mounted on the base. The upper portion of the link arm is connected to a cutting member with the cutting saw blade driven by a motor. The lower portion of the link arm is connected to the upper portion of a supporting member and secured by a threaded central bolt. The linear ball bearing is mounted in the inner aperture of the supporting member, which is slidably connected to the slide rod by a linear ball bearing. At the outer end of the slide rod is mounted a position limit socket. The inner end of the slide rod is connected and secured beneath the cutting table via a releasable securing configuration mentioned above. A flexible blade guard is also provided.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: July 13, 2010
    Assignee: Nig Bo Yang Ming Electric Tools Company, Ltd.
    Inventor: Gui Qiang Hu
  • Publication number: 20100147125
    Abstract: The invention is based on a power tool, in particular a stationary saw, having a guard device which has a guard element. It is proposed that the guard device has an actuator system, which is provided for monitoring an opening which is formed at least by the guard element and is adaptable to at least one geometric feature of a workpiece.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 17, 2010
    Inventor: Georg STELLMANN
  • Patent number: 7673778
    Abstract: The invention is directed to a pill cutter that has a protected cutting edge. The pill cutter includes a guard, a base, and a cover. The components are arranged such that the guard slides over the cutting edge when the pill cutter is in an open position and the guard exposes the cutting edge when the pill cutter is in a closed position. The invention is also directed at a method for assembling the pill cutter and a method of using the pill cutter to cut a pill or tablet.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: March 9, 2010
    Assignee: Apothecary Products, Inc.
    Inventor: Ka Chuen Sze
  • Publication number: 20100037739
    Abstract: A power cutting tool, such as a table saw, comprising a sensing system for detecting certain conditions with respect to an exposed blade of the power cutting tool is disclosed. Several embodiments of the sensing system comprise at least one sensor located above the blade and positioned to (1) monitor one or more volume zones adjacent the blade, (2) detect when an object enters one or more of the zones, and (3) trigger a reaction system in response to the detection. Another embodiment uses an optical sensor to measure the height of objects approaching the blade to detect an increase in the height beyond a predetermined threshold. Still another embodiment uses an optical distance sensor to detect the occurrence of a work piece lifting from the table top which can indicate that a kick-back condition is imminent. The reaction system can be triggered when such a condition is detected.
    Type: Application
    Filed: June 1, 2006
    Publication date: February 18, 2010
    Inventors: Will H. Anderson, Ryan J. Connolly, Jeffrey Y. Hayashida, William R. Knapp, Jean-Pierre Krauer, Brian Lamb, John Larkin, Kyle L. Petrich, David C. Shafer
  • Publication number: 20100024620
    Abstract: A power table saw having a table top surface with an opening through which a blade can extend, the blade being mounted on an arbor and being at least vertically adjustable relative to the top surface, the table saw comprising a blade assembly having a first pivot connection and being pivotally mounted to the table saw enabling the blade to be vertically adjusted through a predetermined arc relative to the table top and a riving knife mounted on the blade assembly and being vertically moveable in a substantially straight direction as the blade is vertically adjusted through the predetermined arc.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Inventor: Ronald Arvey
  • Publication number: 20090235794
    Abstract: A cutting machine can include a cutting machine body that is movably supported above a table and capable of vertical movement, the cutting machine body can be positioned at an upward waiting position and a lower end position. The cutting machine body can include an auxiliary cover positioned around a portion of a blade and including a projection. When in the upward waiting position the auxiliary cover is not able to move upward because of the position of the projection, and in the lower end position the auxiliary cover is able to move upward.
    Type: Application
    Filed: March 18, 2009
    Publication date: September 24, 2009
    Applicant: MAKITA CORPORATION
    Inventor: Masahiko Inai
  • Publication number: 20090223337
    Abstract: A power tool for cutting a workpiece including a casing, an auxiliary handle assembly extending from the casing, a motor disposed at least partially in the casing, and a drive transmission operably coupled to the motor. The drive transmission outputs a driving force in response to an input from the motor. A spindle locking mechanism is provided that is selectively positionable between a retracted position spaced apart from the drive transmission and a locked position engaging the drive transmission. The spindle lock mechanism thereby prevents rotation of the drive transmission in response to actuation of a pad member. The pad member can be positioned adjacent to the auxiliary handle to permit single-handed holding of the power tool and actuation of the pad member.
    Type: Application
    Filed: March 6, 2008
    Publication date: September 10, 2009
    Applicant: BLACK & DECKER INC.
    Inventors: David L. Wikle, James R. Parks, Richard C. Nickels, JR.
  • Publication number: 20090071306
    Abstract: A cutting machine includes a main body in which a rotary blade is included, a base over which a workpiece is to be placed, and a guide fence mountable to the base. The main body is provided above the base in such a manner that the main body is movable upward and downward, and a longitudinal direction of the guide fence is perpendicular to the rotary blade as viewed from top when the guide fence is mounted to the base. The guide fence provides a guide surface that extends in the longitudinal direction of the guide fence and is configured to be rendered perpendicular to a top face of the base when the guide fence is mounted to the base. The guide fence includes a stopper that is configured to project from the guide surface, to be movable upward and downward, and to be fixed at any level.
    Type: Application
    Filed: September 2, 2008
    Publication date: March 19, 2009
    Applicant: MAKITA CORPORATION
    Inventor: Syuji Aoyama
  • Publication number: 20080196565
    Abstract: A power tool comprises a detection system for detecting a situation where an operator using a power tool of the type which has an exposed rotating component contacts the rotating component, and a protection system for minimizing the possibility of an operator being injured by contacting the rotating component.
    Type: Application
    Filed: February 13, 2008
    Publication date: August 21, 2008
    Inventor: Erin F. Eppard
  • Publication number: 20080121080
    Abstract: A quick release structure for use in the saw blade guard assembly of a table saw is disclosed to include a mounting member affixed to the base of the table saw, a coupling block detachably attached to the mounting member to hold a pivoted attachment member, for example, a saw blade guard, and a rotary locking member mounted in the coupling block and rotatable relative the coupling block between two positions to lock the coupling block to the mounting member or to release the coupling block.
    Type: Application
    Filed: March 22, 2007
    Publication date: May 29, 2008
    Applicant: Durq Machinery Corp.
    Inventors: Chia-Sheng Liu, Yu-Feng Chan
  • Patent number: 7243587
    Abstract: The present invention is directed to a blade guard assembly capable of allowing increased capacity for saws, such as radial arm saw, miter saws, and the like. The assembly includes a U-shaped guard and a pivot pin for allowing the guard to obtain a plurality of positions including a guarding orientation and a cutting orientation. The guard may pivot so as to allow a larger dimension workpiece to be cut without exposing the saw blade unnecessarily. Additionally, a biasing device may be included for generally forcing the guard into a guarding orientation.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: July 17, 2007
    Assignee: Black & Decker Inc.
    Inventors: Craig A. Carroll, Chad Hollis, Vance Roe
  • Patent number: 7234380
    Abstract: The present invention is directed to an apparatus for maintaining contact between a portion of a workpiece between a kerf intrusion device and an alignment fence. In an aspect of the present invention, a table saw is configured with a support having a support surface for accepting a saw blade extended through an aperture in the support to cut a workpiece. An alignment fence is adjustably coupled to the saw to allow for workpiece positioning with respect to the saw blade. A kerf intrusion device such as a back splitter is coupled to an arbor for rotating the saw blade. An side pressure splitter is further included on the intrusion device such that a portion of a workpiece disposed between the intrusion device and the alignment fence is directed into contact with the alignment fence.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: June 26, 2007
    Assignee: Black & Decker Inc.
    Inventor: Jaime E. Garcia
  • Patent number: 7216574
    Abstract: This invention relates to a food slicing apparatus, and in particular to an apparatus for slicing bread. The food slicing apparatus of the invention has an enclosure to support the food to be sliced. The enclosure features an access opening through which food can be introduced into the enclosure. A cover for the access opening can be provided, moveable relative to the enclosure from an open position to a closed position. A guide is provided within the enclosure for guiding a blade to slice food supported within the enclosure. A stop is also provided to at least partially obstruct the guide. The cover is connected to at least one of the guide and the stop to displace the guide and the stop relative to one another, so that when the cover is in an open position, the stop at least partially obstructs the guide. In the embodiment disclosed, the stop is connected to the cover and moveable relative to the guide to at least partially obstruct the guide when the cover is in the open position.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: May 15, 2007
    Inventor: Charles A. Woods
  • Patent number: 7178438
    Abstract: The present invention relates to a power miter saw with a quick actuating mechanism for a movable guard. The mechanism comprises a mounting arm, a fixed guard, a drive means and a circular saw blade. A movable guard is pivotally connected to the fixed guard. The movable guard is pivotally connected to the front end of the actuating link by a second guiding member. The rear end of the actuating link is movably connected to the mounting arm. A first guiding member is disposed on the rear end of the actuating link and the mounting arm has a first arcuate slide slot with which the first guiding member engages. When the fixed guard moves together with the saw unit downwardly, the actuating link pivotally engages the first slide slot and actuates the movable guard rapidly to open. The movable guard of the present invention can be easily manufactured and conveniently assembled or adjusted so as to reduce the cost.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: February 20, 2007
    Assignee: Positec Power Tools (Suzhou) Co., Ltd.
    Inventors: Wang Xin, Liu Changning, Kong Zhao
  • Patent number: 7020970
    Abstract: A saw guard system for enhancing the safety of use of powered hand saws by eliminating the need to hold the blade guard in a static position during the cutting operation. The saw guard system includes a circular saw with a housing, a motor positioned within the housing, a shaft extending from the motor through a wall of the housing, a blade operationally coupled to the shaft, and an upper blade guard for covering a perimeter edge of the blade above the shaft; a lower guard member pivotally coupled to the housing, a guard member motor coupled to the housing and the lower guard member for moving the lower guard member from the deployed position to the stored position; the guard member motor is operable separately from the motor of the circular saw; and a gear assembly operationally coupling the guard member motor to the lower guard member.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: April 4, 2006
    Inventor: James Welch
  • Publication number: 20040226424
    Abstract: A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).
    Type: Application
    Filed: January 8, 2004
    Publication date: November 18, 2004
    Inventors: Michael O'Banion, David A. Carrier, Adan Ayala, Michael P. Baron, James P. Bascom, Frederick R. Bean, Mark E. Brunson, Warren A. Ceroll, Peter Chaikowsky, David J. Doss, Robert Gehret, John K. Horky, Daryl S. Meredith, Philip T. Miller, Robert J. Opsitos, William R. Stumpf, Matthew Webster, Qiang Zhang
  • Publication number: 20040089125
    Abstract: A compound miter saw is described having a bevel lock and bevel index to facilitate setting and locking the blade of the miter saw at desired bevel angles. Also described is a compound miter saw having a miter lock and miter index to facilitate setting and locking of the blade of the miter saw at desired miter angles. An improved down stop is disclosed that facilitates the return of the miter saw to a desired depth of cut. The disclosed miter saw is described having an improved fence, improved dust collection system, and improved carry handles.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 13, 2004
    Applicant: Emerson Electric Co.
    Inventors: Keith R. Schoene, Jason E. Hill, Daniel A. Terpstra
  • Publication number: 20040060407
    Abstract: A guard assembly for a compound miter saw includes an upper blade guard assembly, a lower blade guard assembly having a movable guard pivotally mounted in the upper blade guard assembly and a linkage assembly. The lower blade guard is pivotally mounted in the upper blade guard assembly. The linkage assembly including an inner link pivotally interconnected with the movable guard and the upper blade guard assembly controls the movement of the guard. A lock release mounted on the upper blade guard assembly locks the movable guard in position.
    Type: Application
    Filed: April 16, 2003
    Publication date: April 1, 2004
    Inventor: Mei-Lan Kao
  • Patent number: 6666245
    Abstract: A tree trimming apparatus is provided for preparing a tree, such as a Christmas tree, for attachment to a tree stand. The tree trimming apparatus includes a raised platform supported by a plurality of legs. The platform also includes an opening for receiving the trunk of a tree. Below the platform is positioned a jaws assembly for affixing the tree in place. Meanwhile, the tree trimming apparatus includes a saw assembly for severing the base of the tree, and a drill assembly for drilling a recess into the bottom of the tree for receipt of the spike of a tree stand.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: December 23, 2003
    Assignee: LeisureMore Corporation
    Inventors: Richard C. LaBahn, Douglas W. LaBahn
  • Patent number: 6662695
    Abstract: A saw comprising a saw assembly including an upper saw blade guard and a motor which can be actuated by an on-off switch arrangement and can rotatingly drive a saw blade mounted on the assembly. The saw assembly is pivotably mounted on a saw table such that the saw assembly can be lowered towards the table to cut a workpiece resting on the table. The saw includes a lower moveable guard which is pivotably mounted to the upper guard so that the lower guard is moveable to expose a saw blade mounted on the assembly and a guard lock arrangement is used for locking the lower guard over a saw blade mounted on the saw assembly when the saw is not in use. The guard lock arrangement includes a guard lock lever moveably mounted to the saw assembly.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: December 16, 2003
    Assignee: Blacker & Decker Inc.
    Inventors: Marcello Bettacchini, Mirco Rossetti, Lucio Ginocchini
  • Patent number: 6651539
    Abstract: The invention relates to a perforating, grooving or cutting device for a multicolor or single-color sheet-fed rotary press (1) comprising printing and/or varnishing groups (2), at least one of which has a rubber cylinder (3) with a holding system (14) for a blanket, as well as an associated counter-pressure cylinder (4). According to the invention, a rectangular base plate (13) is provided, which is made from a flexible and shape-retaining material over which it is possible to glue embossed treatment profiles (29, 37) used as perforating and/or grooving and/or punching profiles corresponding to perforating and/or grooving and/or punching shapes which can be predetermined. Furthermore, at least two fastening strips (17, 18) are provided for detachably attaching the punch foil to opposed marginal areas in the stretched state.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: November 25, 2003
    Inventors: Friedrich Eicher, Detlef Füessl
  • Patent number: 6595097
    Abstract: A band saw shielding device is linked with an elevation guiding set of a band sawing machine comprising a wheel on which the band saw runs, and a stop portion. The shielding device comprises a main housing fastened with the elevation guiding set and having a front plate with a hollowed portion, a position confining portion disposed longitudinally and a band replacing slot, a receiving space formed in the center thereof for receiving the band saw; a movable cover having a slide plate disposed slidably at the position confining portion of the main housing, a stop edge connected with the slide plate and stopped by the stop portion of the band sawing machine. The shielding device cooperates with the elevation guiding set to surround the band saw, so as to prevent the band saw from being a safety hazard. The wheel is still received in the hollowed portion without interference when the main housing is raised.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: July 22, 2003
    Assignee: Oav Equipment & Tools, Inc.
    Inventor: Lien-Chu Lee
  • Publication number: 20030070519
    Abstract: This “personnell Protective Safety Device” is placed over all these types of ultra sharp blade edges to prevent serious cuts and dismemberments to all employees: making, shipping, using, and handling these sharp instruments. These shields are applicable to: Medical, Dental, and industrial use(s). There has been no specific previous type device patented. This device is of the type required and needed to comply with the currently enacted, Federal Regulations, as per the 106th U.S. Congress, O.S.H.A., and the revised POstal Standards. This device as submitted for patent meets those requirements, and may prevent countless serious injuries to all workers, nationally, as well as internationally. I attest to this statement, to be true to my best knowledge of it's content, and context.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 17, 2003
    Inventor: James Edward Beld
  • Publication number: 20030037655
    Abstract: The present invention relates to a catch structure of a rotary cover plate of a circular sawing machine. A rotary cover plate is rotatably mounted on an upper blade guard of a circular sawing machine, to cover a semi-circular hole of the upper blade guard. A lower blade guard is pivoted on the rotary cover plate, so that the lower blade guard may be rotated relative to the rotary cover plate. The rotary cover plate has an inner side protruded with a first catch end which may be stopped and positioned on a side wall of the semi-circular hole. The rotary cover plate has an outer side protruded with a second catch end which may be stopped on a lug of a bottom edge of the lower blade guard.
    Type: Application
    Filed: August 21, 2001
    Publication date: February 27, 2003
    Inventor: Chang Chin-Chin