Tool Carrier Oscillated Or Rotated Patents (Class 83/490)
  • Patent number: 9815129
    Abstract: A saw bench having a first pair of legs and a second pair of legs. Between the first pair of legs and the second pair of legs are two cross members for material to be cut. A sawing kerf is formed between cross members. A first guide rail and/or a second guide rail for a sawing member is mounted on the saw bench in such a way that, during sawing of the material to be cut, the sawing member engages through the sawing kerf below a level of the material to be cut, which is held by the two cross members.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: November 14, 2017
    Inventor: Josef-Michael Schambeck
  • Patent number: 9789624
    Abstract: A cutting device may include a friction reducing device arranged in an operational force transmission path between an operation member and a fixing device that can fix a circular cutter to a rotational shaft of a cutting unit.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: October 17, 2017
    Assignee: MAKITA CORPORATION
    Inventors: Yoshihiro Kimura, Syuji Aoyama
  • Patent number: 9038515
    Abstract: Woodworking machines with cutting tools and motors to drive the cutting tools are disclosed. The machines may be equipped with a detection system that detects a dangerous condition between the cutting tool and a person, and with a reaction system that performs a specified action upon detection of the dangerous condition. The machines also may be equipped with a control system that tests the operability of at least a portion of the detection system and/or the reaction system. The control system may disable the motor if the tested portion is inoperable.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: May 26, 2015
    Assignee: SD3, LLC
    Inventor: Stephen F. Gass
  • Patent number: 9032851
    Abstract: An adjustment device for an auxiliary fence includes a support frame, an auxiliary fence, a guiding unit and an adjusting unit. The guiding unit guides the auxiliary fence along a longitudinal direction such that the auxiliary fence is selectively slidable relative to the support frame. The adjusting unit allows the auxiliary fence to be adjusted relative to the support frame and securely positioned. The adjusting unit includes a driving member, a securing member installed on the driving member, and an elastomeric element. When the driving member is operated, the securing member becomes disengaged from the support frame which allows the position of the auxiliary fence to be adjusted by sliding it relative to the support frame.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: May 19, 2015
    Assignee: REXON INDUSTRIAL CORP., LTD.
    Inventor: Jung-Huo Chen
  • Patent number: 9032852
    Abstract: In some examples, an apparatus includes a base including an arm selectively movable with respect to the base. The arm is selectively rotatable about a first arm axis. A base plate is engaged with the arm. A tool is configured to be detachably coupled to the base plate. The tool is movable with the base plate when coupled to the base plate. The apparatus includes a first mode with the tool coupled to the base plate and the arm being selectively rotatable about the first arm axis, a second mode with the tool coupled to the base plate and the arm being constrained from rotating about the first arm axis, the arm being substantially stationary with respect to the base; and a third mode with the tool detached from the base plate.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: May 19, 2015
    Assignee: RBWL Licensing Holdings, LLC
    Inventor: Robert Burton Behr
  • Patent number: 9016179
    Abstract: A positioning device for a turnable table of a saw machine having a pivot shaft that pivotally connects a pair of clamping units. A pressing member with an attachment portion for attaching to a coupling unit may be formed on each clamping unit. By manipulating a trigger of the coupling unit, the pair of clamping units can be driven to rotate a pair of corresponding clench members for selectively clamping or unclamping a base of the saw machine. Thereby, the turnable table can be secured in place upon adjustment.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: April 28, 2015
    Assignee: Rexon Industrial Corp., Ltd.
    Inventor: Cheng-Hung Chiu
  • Patent number: 8978531
    Abstract: The invention relates to a device for separating insulating materials which were obtained in a continuous production process and are made of mineral wool in determinable lengths, comprising the following features: a) the separation of the material is carried out by means of two separately driven circular saw blades (6) which are suspended like a pendulum; b) the position of the suspension (1) and the drive (2) of the saw blades (6) can be adjusted by means of a carriage (4) in the direction of supply of the material; c) the drive of the carriage (3), the drive of the saw blades (2), the drive of the pendular units (14) and the driving action of the conveyor belt (15) are provided by servomotors; d) a deflection unit (12) causes the lowering of the conveyor belt (15) in the respective area of the saw blades (6); e) the process of material separation is automatically controlled in accordance with the cutting performance of the separating means and the advancement speed of the material supply.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: March 17, 2015
    Assignee: Grenzebach Maschinenbau GmbH
    Inventor: Rudolf Schäferling
  • Patent number: 8960062
    Abstract: A vise clamping tool for a table-type circular sawing machine includes a rotating arm assembly connected to a supporting shaft. The rotating arm assembly has a first rotating arm connected to the supporting shaft and a second rotating arm provided with a clamping component. The second rotating arm is pivotally connected to the first rotating arm around a first pivoting axis oriented along the horizontal direction.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: February 24, 2015
    Assignee: Chervon (HK) Limited
    Inventor: Zhifeng Chen
  • Patent number: 8919235
    Abstract: A cutting apparatus includes a cutting device and a base section. The cutting device includes a motor, a housing, a circular saw blade, and a base plate. The circular saw blade is driven by the motor to cut a workpiece. The housing rotatably supports the circular saw blade and accommodates the motor. The base plate is connected with the housing and is formed with an opening into which the circular saw blade is inserted. The base plate includes a main base plate connected with the housing and a sub base plate detachably mounted on the main base plate. The base section supports the workpiece. The cutting device is detachably mounted on the base section and is pivotably supported by the base section to be moved toward and away from the base section to cut the workpiece.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: December 30, 2014
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Junichi Sudou, Yoshimasa Hayama, Toshihiro Enya
  • Patent number: 8919231
    Abstract: Various safety systems for power tools, and in particular table saws, include detection systems for detecting a dangerous condition relative to a blade of the power tool, and reaction systems for taking mitigation action in response to detection of a dangerous condition. The safety system may detect, prevent, and/or mitigate a dangerous condition associated with the power tool.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: December 30, 2014
    Assignee: Power Tool Institute
    Inventors: Andy Butler, Brian Lamb, Chris Tacklind, Clinton Lazzari, Edward Cooper, Eric Edward Schultz, Frank Buhrmann, John Gilbert, David Titzler, William Scott, Peter L. Domeny
  • Patent number: 8910552
    Abstract: Disclosed is a movable cutting tool apparatus and/or methods for cutting workpieces; either generally including a cutting tool apparatus having a cutting tool unit support apparatus including at least a substantially stationary support structure and one or more rear-mount glide rails; a cutting tool unit which is supported by the support apparatus; a cutting implement held by the cutting tool unit, whereby the cutting tool unit operates and controls the cutting implement; and, at least one fluid coolant and/or lubricant tube connected to the cutting tool unit and adapted to flow a fluid to the cutting implement in operation; wherein the cutting tool unit and the cutting implement are directly movable with the glide rails to provide reciprocal and translational movability for the cutting tool unit and the cutting implement.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: December 16, 2014
    Assignee: Blue Collar Ventures, L.L.C.
    Inventor: Michael E. Hogan
  • Patent number: 8850940
    Abstract: A miter saw for use with a miter saw stand includes a base having a first clamping surface, a second clamping surface, and a first actuator. The miter saw further includes a turntable rotatable in relation to the base and having a work piece support surface. The miter saw also includes a support assembly attached to the turntable, and a cutting assembly attached to the support assembly and positioned over the turntable. The first actuator is movable between a first position and a second position. Movement of the first actuator from the first position towards the second position causes the first clamping surface to move toward the second clamping surface.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: October 7, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Matthew Michael Rybka, Garth William Prince
  • Patent number: 8776655
    Abstract: A worktable for a circular saw includes a rotatable table defining a cutting groove, two movable fences arranged on the rotatable table at two opposed sides relative to the cutting groove, and a connection member connected between the two movable fences. The connection member has an arc-shaped locating groove and is adapted for engagement with a guide member of the rotatable table so that when the rotatable table is rotated, the guide member engages and applies a force to the wall of the arc-shaped locating groove, causing the two movable fences to be moved relative to the cutting groove, and therefore the two movable fences are maintained spaced away from the cutting groove at a distance without interfering with the operation of the saw blade.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: July 15, 2014
    Assignee: Rexon Industrial Corp., Ltd.
    Inventor: Yi-Yuan Lin
  • Patent number: 8733220
    Abstract: The present invention provides a miter saw having a rotary-disc assembly, a swing arm assembly rotatably connected with the rotary-disc assembly, a sliding rod assembly slidably connected with the swing arm assembly, and a cutting head rotatably connected with the sliding rod assembly around a turning shaft of a head section. The miter saw may also have a sliding fixed-length mechanism for the cutting head which is used to fix the cutting head to a specific position relative to the swing arm assembly. When the cutting head is fixed at the specific position, and pivoted around the turning shaft to a lowermost position, an intersecting point between a plane of a supporting surface of a fence and a cutting edge of a saw-blade is located above an intersecting line between the supporting surface of the fence and a supporting surface of a base plate.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: May 27, 2014
    Assignee: Chervon (HK) Limited
    Inventor: Kesong Xu
  • Patent number: 8707837
    Abstract: The objective is to improve durability while making it possible to maintain an excellent cutting plane and feeling of use with a simpler configuration. Disclosed is a tabletop circular saw for which a main body equipped with a saw blade that is rotated by the driving of a motor is provided to be capable of vertical movement on a base on which a material to be cut is placed; the output shaft of the motor is provided parallel to a spindle of the saw blade; and an automatic torque adjustment mechanism, which is equipped with a drive pulley, a follower pulley, and a belt, and which automatically adjusts the torque transmitted from the output shaft to the spindle according to the load when the saw blade rotates, is provided between the output shaft and the spindle.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: April 29, 2014
    Assignee: Makita Corporation
    Inventors: Shinya Kojima, Masahiko Miura, Toshiyuki Kani
  • Patent number: 8695466
    Abstract: An apparatus for cooling the cutting device of paper logs cutting machines including a channel (60) surrounding the cutting device, in which channel a cooling fluid is injected, the cooling fluid being confined inside the channel.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: April 15, 2014
    Assignee: Futura S.p.A.
    Inventor: Ciro Guarini
  • Patent number: 8695468
    Abstract: Embodiments of the present invention include a locking assembly for a power miter saw of the type which has a base and a table that is rotatably mounted on the base about a center pivot axis, comprising a pair of oppositely facing arcuate surfaces on the base spaced from and being concentric with the center pivot axis, a clamp attached to the table for engaging the arcuate surfaces to lock the table from rotating relative to the base by applying a clamping force to the arcuate surfaces and not to the center pivot axis, and an actuating mechanism for operating the clamp.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: April 15, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Adam S. Thomas
  • Patent number: 8677872
    Abstract: A sawing machine having a miter angle adjustment assembly includes a machine base, a worktable rotatably connected to the machine base and rotatable about an axis, a cutter unit mounted to the worktable, a tightening member to lock movement of the worktable relative to the machine base and a driving device set. The driving device set includes a driving member pivotally mounted to the worktable and an eccentric member coaxially rotatable with the driving member to move the tightening member. The eccentric member is controllable by the driving member to rotate between a first position and a second position to move the tightening member into engagement with or away from the machine base.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: March 25, 2014
    Assignee: Rexon Industrial Corp., Ltd.
    Inventor: Cheng-Hung Chiu
  • Patent number: 8631734
    Abstract: A glide movement controller for use with a hinge connection that includes a shaft, as well as a hinge connection and a power saw including such a controller. The glide movement controller includes a generally U-shaped controller body configured to move towards the shaft in a first direction such that resistance upon the shaft is increased and away from the shaft in a second direction such that resistance upon the shaft is decreased; a pair of apertures extending through the controller body; and an interior bearing surface defined on the controller body. The interior bearing surface is configured and arranged to face the shaft. In certain embodiments, at least a portion of the interior bearing surface is located between the apertures.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: January 21, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Jie Liu
  • Patent number: 8631733
    Abstract: A miter saw is provided with a base unit on which target material is placed, a table unit rotatably provided on the base unit, a swing unit for swinging up and down above the table unit, and a cutting unit provided on the swing unit and having a flat motor provided with a rotor having an output shaft and a coil disc provided with a plurality of coil pieces arranged in the circumferential direction about the output shaft when seen in the direction of the axis of the output shaft and a stator having a magnet arranged such that magnetic flux passes through the coil disc in the direction of the axis of the output shaft, and a rotating blade rotation shaft on which a rotating blade can be mounted and positioned substantially parallel to the direction of the axis of the output shaft of the flat motor, and a power transfer unit that transfers the power of the flat motor to the rotating blade.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: January 21, 2014
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Ryuichi Imamura, Masayuki Tajima
  • Patent number: 8607678
    Abstract: A miter saw has a base assembly, a table assembly rotatably disposed on the base assembly, a support housing connected to the table assembly, and a saw assembly pivotably attached to the support housing. The saw assembly is pivotable downwardly for cutting a workpiece disposed on the table assembly. The saw has a miter lock assembly including a shoe assembly connected to the table housing and movable between a first position not contacting the base assembly and a second position contacting the base assembly. The shoe assembly has a movable shoe for adjusting the angular position of the table assembly relative to the base assembly.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: December 17, 2013
    Assignee: Black & Decker Inc.
    Inventor: Robert S. Gehret
  • Patent number: 8549970
    Abstract: A power saw assembly including a base plate and having a powered blade assembly including a saw blade attached to the upper surface of the base plate. The powered blade assembly has at least one operating position for cutting material wherein the saw blade extends at least partially through a slot in said base plate. The power saw assembly further includes a fence assembly swivelable about a substantially vertical axis from a first position allowing the saw blade to cut through a piece of material at an angle of 90 degrees with respect to the length of the material, to other positions allowing the saw blade to cut through the material at angles other than 90 degrees with respect to the length of the material. The fence assembly is securable to the base plate at any position by clamping the fence assembly against the upper and lower surfaces of the base plate.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: October 8, 2013
    Inventor: Donald Jesse Stone
  • Patent number: 8539870
    Abstract: In some examples, an apparatus includes a base including an arm selectively movable with respect to the base. The arm is selectively rotatable about a first arm axis. A base plate is engaged with the arm. A tool is configured to be detachably coupled to the base plate. The tool is movable with the base plate when coupled to the base plate. The apparatus includes a first mode with the tool coupled to the base plate and the arm being selectively rotatable about the first arm axis, a second mode with the tool coupled to the base plate and the arm being constrained from rotating about the first arm axis, the arm being substantially stationary with respect to the base; and a third mode with the tool detached from the base plate.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: September 24, 2013
    Assignee: RBWL Licensing Holdings, LLC
    Inventor: Robert Burton Behr
  • Patent number: 8522655
    Abstract: Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: September 3, 2013
    Assignee: SD3, LLC
    Inventors: Stephen F. Gass, J. David Fulmer, Joel F. Jensen, Benjamin B. Schramm, Robert L. Chamberlain
  • 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: 8495939
    Abstract: A table saw includes a table capable of supporting a workpiece, a cutting unit and a positioning fence. The positioning fence has a positioning surface for supporting the workpiece. The positioning surface is divided into an upper positioning surface and a lower positioning surface that are positioned above the table. First slide fences allocated to the lower positioning surface and second slide fences allocated to the upper positioning surface are slidably supported in a table surface direction relatively independent from each other. The positioning surfaces of the first and second slide fences constitute an entire region of the positioning surface. In this way, the entire region of the positioning surface is made to be slidable in accordance with various operation modes.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: July 30, 2013
    Assignee: Makita Corporation
    Inventors: Toshiyuki Kani, Masahiko Miura, Shinya Kojima, Kenji Abe
  • Patent number: 8490528
    Abstract: A cutting device includes a positioning mechanism for positioning a cutting unit at a plurality of tilt angles including a first tilt angle and a second tilt angle in a left direction and/or a right direction. The first tilt angle is larger than the second tilt angle. A setting state for the first tilt angle is reset to a setting state for the second tilt angle when a positioning state at the first tilt angle is released.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: July 23, 2013
    Assignee: Makita Corporation
    Inventor: Syuji Aoyama
  • Patent number: 8485078
    Abstract: A combination table-miter saw including a base, an arm rotatably coupled to the base and moveable relative to the base between a first position and a second position, and a platform coupled to the arm and moveable relative to the arm between a first position and a second position. The combination table-miter saw also includes a safety device configured to allow the combination table-miter saw to function as a table saw when the arm is in the first position and to allow the combination table-miter saw to function as a miter saw when the platform is in the first position.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: July 16, 2013
    Assignee: Robert Bosch Tool Corporation
    Inventor: John C. Janson
  • Patent number: 8430005
    Abstract: Miter saws are disclosed having a base, a blade supported by the base, a detection system adapted to detect a dangerous condition between a person and the blade, and a reaction system associated with the detection system to cause a predetermined action to take place upon detection of the dangerous condition. The blade is rotatable, and moves into a cutting zone to cut a workpiece. The predetermined action may be to stop the blade from rotating, to create an impulse against movement of the blade into the cutting zone, or to cause the blade to move away from the cutting zone. The reaction system may include a brake member coupled to a housing.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: April 30, 2013
    Assignee: SD3, LLC
    Inventors: Stephen F. Gass, J. David Fulmer
  • Patent number: 8424433
    Abstract: A cutting tool has a table for placing a workpiece thereon. A cutting unit is mounted to the table. A support leg device includes a support leg, an operation member and a motion conversion mechanism. The motion conversion mechanism is coupled between the support leg and the operation member, so that the movement of the operation member is converted into the movement of the support leg.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: April 23, 2013
    Assignee: Makita Corporation
    Inventor: Yoshinori Shibata
  • Patent number: 8413559
    Abstract: Woodworking machines are disclosed having electrically conductive cutting tools adapted to cut workpieces. The machines include a contact detection system capacitively coupled to the cutting tool, and adapted to detect contact between a person and the cutting tool. The machines also include a reaction system configured to cause one or more predetermined actions to take place upon detection of contact between a person and the cutting tool by the contact detection system.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: April 9, 2013
    Assignee: SD3, LLC
    Inventor: Stephen F. Gass
  • Patent number: 8413562
    Abstract: A slide circular saw comprises a base, a saw blade rotatably driven by a motor, and a main body including the saw blade. The slide circular saw is configured to be capable of automatically changing a cutting depth between in a vertical cut and a bevel cut operations. A chamfered part where a lower limit position setting bolt abuts in a vertical cut operation and a peripheral surface part where the lower limit position abuts in a bevel cut operation are provided at a rod of the slide circular saw. The peripheral surface part has a lower limit position of the saw blade being higher than that of the chamfered part. Position of the rod can be switched between a first position where the chamfered part abuts the lower limit position setting bolt when the main body is in a vertical cut position and a second position where the peripheral surface part abuts the lower limit position setting bolt when the main body is in a bevel cut position.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: April 9, 2013
    Assignee: Makita Corporation
    Inventor: Toshiyuki Kani
  • Patent number: 8375836
    Abstract: The present invention includes a cutting device including a table and a cutting unit disposed on an upper side of the table and vertically movably supported by the table via a slide mechanism. The slide mechanism enables the cutting unit to slide in a sliding direction relative to the table within a plane substantially parallel to a surface of the table. A slide lock mechanism can lock and unlock the sliding movement of the cutting unit and includes an operation member operable to slide for locking and unlocking the sliding movement.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: February 19, 2013
    Assignee: Makita Corporation
    Inventors: Toshiyuki Kani, Goh Yamamura
  • Patent number: 8336432
    Abstract: A safety system for a rotary saw or other dangerous machine tools features a flesh-sensing circuit (14, 19), located on a safety guard (16) surrounding a dangerous machine part, which generates an electronic signal to trigger emergency stopping of the machine before the operator can contact the dangerous machine part. The stopping means preferably employs DC injection, winding current direction reversal and/or electromagnetic motor braking, in the event of detection of operator contact with the safety guarding device. The system is adapted to be used both with newly-manufactured machine tools and by retrofitting onto previously-manufactured machine tools, by in-the-field modifications.
    Type: Grant
    Filed: September 24, 2011
    Date of Patent: December 25, 2012
    Inventor: David J Butler
  • Patent number: 8291800
    Abstract: A combination power tool with a machine base, an independently operable portable circular saw, and a connection device for fastening the portable circular saw to the machine base to form a miter saw. The portable circular saw has a power supply unit including a first power socket that is provided at the front side of the portable circular saw and selectively electrically connectable to the motor of the portable circular saw, a second power socket provided at the rear side of the portable circular saw and selectively electrically connectable to the motor of the portable circular saw, and a power cable for connecting an external power source to one of the first power socket and the second power socket.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: October 23, 2012
    Assignee: Rexon Industrial Corp., Ltd.
    Inventors: Yen-Chih Chang, Cheng-Hung Chiu
  • Patent number: 8272454
    Abstract: One aspect according to the present invention includes a cutting unit for a cutting device. The cutting unit has a gear chamber. A partitioning member can partition the gear chamber at a midpoint of a transmission path of rotation of a gear train from an electric motor to a spindle.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: September 25, 2012
    Assignee: Makita Corporation
    Inventors: Toshiyuki Kani, Masahiko Miura
  • Patent number: 8266996
    Abstract: Embodiments of the invention comprise an adjustable fence assembly for use with a power tool, that further comprise an elongated lower fence for attachment to the power tool, the lower fence having a base with an upper support and locking surface configuration extending along a substantial portion of the length of the base and a vertical front face for positioning a work piece, an elongated upper fence having a bottom surface configuration for engaging the surface configuration of the lower fence, the upper fence being releasably attached to the lower fence and adjustable relative to the lower fence along its lengthwise direction, and a locking mechanism carried by the lower fence and operatively connected to the upper fence for selectively applying at least a downward force and a face biasing force for securing the upper fence to the lower fence.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: September 18, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Adam Thomas, Kenneth N. Svetlik
  • Patent number: 8220372
    Abstract: A combination table-miter saw including a base, an arm rotatably coupled to the base and moveable relative to the base between a first position and a second position, and a platform coupled to the arm and moveable relative to the arm between a first position and a second position. The combination table-miter saw also includes a safety device configured to allow the combination table-miter saw to function as a table saw when the arm is in the first position and to allow the combination table-miter saw to function as a miter saw when the platform is in the first position.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: July 17, 2012
    Assignee: Credo Technology Corporation
    Inventor: John C. Janson
  • Patent number: 8186255
    Abstract: A woodworking machine having one or more dangerous portions is disclosed. The machine also includes a safety system configured to detect accidental contact between a person and at least one of the dangerous portions by electrically coupling a signal to the person's body, and detecting if the signal becomes coupled to the dangerous portion.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: May 29, 2012
    Assignee: SD3, LLC
    Inventors: Stephen F. Gass, J. David Fulmer
  • Patent number: 8186253
    Abstract: Power tool includes a movable blade and a detection system for detecting contact between the blade and an object. Detection system includes an excitation plate capacitively coupling the drive signal to the movable blade. A circuit generates an in-phase component signal and a quadrature component signal from a blade current signal indicative of the instantaneous current drawn by the movable blade and calculates an energy of the blade current signal considering the in-phase and the quadrature components. The circuit compares the energy of the blade current signal to an adaptive trigger threshold to detect contact between the blade and the object based on whether the energy of the blade current signal is greater than the adaptive trigger threshold.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: May 29, 2012
    Assignee: Power Tool Institute
    Inventors: Vladimir Tetelbaum, Darius Mostowfi, Richard Suprenant
  • Patent number: 8161858
    Abstract: One aspect of the invention can include a cutting machine having a table, a cutting machine body supported by the table via a sliding mechanism to allow movement in a vertical direction and a horizontal direction, the cutting machine body including a fixed cover positioned around an upper side of a rotary blade mounted to a rotatably driven spindle, the rear edge portion of the fixed cover is recessed upward to enable a large cutting depth. The sliding mechanism includes an intermediate stopper mechanism that can be operated to switch between a state where the cutting machine body can slide within an entire slidable range and a state were the cutting machine body can slide only within a partial slidable range at a midway position.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: April 24, 2012
    Assignee: Makita Corporation
    Inventor: Syuji Aoyama
  • Patent number: 8161859
    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: November 2, 2010
    Date of Patent: April 24, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Shigeharu Ushiwata, Hideaki Terashima, Ryuichi Imamura, Toshihiko Hayashizaki
  • Patent number: 8151675
    Abstract: Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 10, 2012
    Assignee: SD3, LLC
    Inventors: Stephen F. Gass, J. David Fulmer, Joel F. Jensen, Benjamin B. Schramm, Robert L. Chamberlain
  • Patent number: 8113099
    Abstract: An apparatus (1) for processing specimens (15), comprising an observation device (2), a specimen holder (3) for receiving the specimen (15) to be processed, and a tool holder (6), the tool holder (6) being pivotable in a plane normal to its longitudinal axis (L?) by a pivot arm (22), and being rotatable about its longitudinal axis (L?); furthermore a drive system for selectable execution of the pivoting of the pivot arm (22) is provided.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: February 14, 2012
    Assignee: Leica Mikrosysteme GmbH
    Inventors: Reinhard Lihl, Michael Zimmermann, Andreas Hallady, Guenther Bock
  • Patent number: 8100041
    Abstract: A miter saw including a base, a turntable, a support section extending from the turntable, and a circular saw unit supported to the support section. A rotation amount detection unit detects rotation amount of the turntable relative to the base. The turntable has a tilt support, and the support section has a tilting section supporting the circular saw unit and supported to the tilt support. A tilting amount detection unit detects tilting amount of the tilting section relative to the tilt support. The turntable has a microcomputer computing a rotation angle of the turntable and tilting angle of the circular saw unit, and a RAM storing the detected rotation amount and the tilting amount installed therein. A battery unit is provided in the turntable for supplying electrical power to electronic components including the rotation amount detection unit, the tilting amount detection unit, and the microcomputer.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: January 24, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Hideaki Terashima, Nobuhiro Takano, Yoshikazu Kawano
  • Patent number: 8100039
    Abstract: A miter saw is disclosed having a base, a blade supported by the base, a detection system adapted to detect a dangerous condition between a person and the blade, and a reaction system associated with the detection system to cause a predetermined action to take place upon detection of the dangerous condition. The blade is rotatable, and moves into a cutting zone to cut a workpiece. The predetermined action may be to retract the blade from the cutting zone.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: January 24, 2012
    Assignee: SD3, LLC
    Inventor: Stephen F. Gass
  • Patent number: 8082825
    Abstract: An improved health and safety system for a table saw includes one or more of: a blade guard that protects the operator from the saw blade, and contains and collects sawdust; a proximity detector and emergency saw motor braking means for use in connection with such blade guard; an anti-kickback device for use in connection with such blade guard, a rip fence adapter for use in connection with such a blade guard, and hoses and fittings to connect the dust containment and collection system of said blade guard to a shop dust collection blower or vacuum system. The system protects the saw operator from potential traumatic injury to a hand, and from ingesting potentially carcinogenic sawdust.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: December 27, 2011
    Inventor: David J. Butler
  • Patent number: 8079294
    Abstract: A cutting tool has a table for placing a workpiece thereon. A cutting unit is mounted to the table. A support leg device includes a support leg, an operation member and a motion conversion mechanism. The motion conversion mechanism is coupled between the support leg and the operation member, so that the movement of the operation member is converted into the movement of the support leg.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: December 20, 2011
    Assignee: Makita Corporation
    Inventor: Yoshinori Shibata
  • Patent number: 8069761
    Abstract: A saw with a base assembly, a table pivotably attached to the base assembly, a housing pivotably attached to the table, at least one rail slidably connected to the housing, and a saw assembly disposed on the at least one rail. The saw assembly includes a motor, and a blade driven by the motor. The saw also includes a dust collector attached to the saw assembly, the dust collector having a tube that extends through the housing.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: December 6, 2011
    Assignee: Black & Decker Inc.
    Inventors: Mark E. Brunson, Frederick R. Bean, Craig A. Oktavec, Daryl S. Meredith, Thomas R. Kaye, Jr., James R. Parks, Lee M. Brendel
  • Patent number: RE44057
    Abstract: A cutting device includes a base, a swivel seat rotatably mounted on the base and having a first end and a second end, and a blade holder releasably engaged with the second end of the swivel seat. A blade is rotatably held by the blade holder. The blade holder is pivotable relative to the swivel seat for cutting when the blade holder is engaged with the second end of the swivel seat. An inclination of the blade relative to the swivel seat is adjustable when the blade holder is disengaged from the second end of the swivel seat. An operative rod is mounted to the first end of the swivel seat and operably connected to the blade holder for controlling releasable engagement between the blade holder and the swivel seat.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: March 12, 2013
    Assignee: Black & Decker Inc.
    Inventor: Lee-Cheng Chang