Cutter Guard Patents (Class 144/251.1)
  • Patent number: 11554513
    Abstract: A fence apparatus for handling a workpiece and resting on a support surface includes a rigid rectanguloid base, a top side of which includes a plurality of parallel guide slots. A bottom side includes at least three height-adjustable feet. A fence assembly includes an adjustable fence bracket and a fence. In some embodiments a top edge of the fence includes one of the guide slots, and the flip stop includes one of the guides for cooperating therewith to allow the flip stop to slide along the top edge of the fence. The flip stop may further include a removable pusher bar extending parallel to the fence for pushing the workpiece close to the tool. Two side L-brackets are each adapted for fixing with sides of the base and for fixing with the support surface. The fence apparatus is fully reversible from left to right.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: January 17, 2023
    Inventor: Bruce Larsson
  • Patent number: 10182925
    Abstract: The present invention relates to a cartilage slicing apparatus which enables cartilage pieces to be sliced with a form and thickness so as to be used in surgery.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 22, 2019
    Inventor: Onur Ergun
  • Patent number: 10173187
    Abstract: The processing machine (1) is adapted to carry a processing tool driven by a motor and includes a safety shield (4) adapted to at least partly shield the processing tool in relation to a user. The safety shield (4) is arranged displaceably away from its shielding position and a magnetically activatable safety arrangement (14) includes a safety switch (15) being operable between a passive state in which the motor (2) is allowed to operate and an activated state in which the motor is prevented from operation. The safety switch (15) is arranged to switch from its passive state to its activated state when the safety shield (4) is displaced away from its shielding position. At least one magnet (16) is arranged to hold said displaceable safety shield (4) in its shielding position and at the same time hold the safety switch (15) in its passive state.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: January 8, 2019
    Assignee: A/S Wodschow & Co.
    Inventors: Morten Højbjerre, Jesper Holmegaard Olsen
  • Patent number: 10131450
    Abstract: A machining device may include an electric motor, a blade rotatably driven by the electric motor for machining a workpiece, and a blade cover configured to surround the blade. A resonance sound reduction device may be disposed at the blade cover and may reduce air vibration generated by the rotation of the blade.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: November 20, 2018
    Assignee: MAKITA CORPORATION
    Inventors: Toru Hiroshima, Yuta Kawai, Sho Kume, Kenji Nose, Yuki Wada, Naoki Ozawa
  • Patent number: 9789627
    Abstract: A power cutting tool includes at least one cutting strand and at least one guide unit configured to guide the cutting strand. The power cutting tool further includes at least one cutting strand contact guard unit which has at least one cutting strand contact guard element. The at least one cutting strand contact guard element is movably mounted on the guide unit and is configured to at least substantially prevent, in at least one operating position of the cutting strand contact guard element, contact between the cutting strand and a user of the power cutting tool.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: October 17, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Petr Grulich
  • Patent number: 9782907
    Abstract: An apparatus for severing a workpiece having a cutting mechanism operable to cut the workpiece substantially along a selected course; drive mechanism operable to drive the cutting mechanism to cut the workpiece; a transport assembly operable to guide the workpiece in movement relative to a predetermined severing position and with respect to the cutting mechanism; and a frame mounting the cutting mechanism and transport assembly in predetermined relation to each other and relative to the severing position so that the drive mechanism is operable to drive the cutting mechanism to cut the workpiece in the severing position.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: October 10, 2017
    Assignee: California Industrial Rubber Co., Inc.
    Inventor: Gile M. Strong
  • Patent number: 9550274
    Abstract: A protective hood device with at least one protective hood basic body is configured to at least partially cover an insertable tool of a portable power tool. The protective hood device has at least one functional recess, and at least one covering unit which is mounted on the at least one protective hood basic body so as to be movable relative to the at least one protective hood basic body. The at least one covering unit is configured to cover the at least one functional recess of the at least one protective hood basic body in at least one first position. The at least one protective hood device further includes a locking unit which is configured to lock the at least one covering unit in the at least one first position relative to the at least one protective hood basic body.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: January 24, 2017
    Assignee: Robert Bosch GmbH
    Inventor: Theo Tagscherer
  • Patent number: 9016335
    Abstract: A forestry vehicle including a frame, a pivoting boom, a first structure, a second structure, and a debris guard. The pivoting boom is carried by the frame. The first structure is carried by the frame and is positioned on a first side of the pivoting boom. The second structure is also carried by the frame and is positioned on a second side of the pivoting boom. A channel exists between the first structure and the second structure. The pivoting boom travels in the channel as the boom pivots about its pivotal axis. The debris guard is pivotally and slidingly coupled to the boom.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: April 28, 2015
    Assignee: Deere & Company
    Inventor: Ryan D. Camps
  • Patent number: 8726776
    Abstract: A table saw guard assembly for guarding a blade on a table saw is provided. The table saw guard assembly includes a support structure and a hood assembly including at least one of a front curtain, first side curtain, second side curtain and top curtain, wherein each of said curtains are independently moveable and/or removable from the hood assembly. Furthermore, a table saw guard assembly is provided including a quick release mechanism for connecting the hood assembly to the support structure.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: May 20, 2014
    Assignee: Black & Decker Inc.
    Inventors: Michael L. O'Banion, Warren A. Ceroll, James R. Parks, Robert Alan Berry, Robert P. Welsh, Daniel Puzio, Michael L. Agronin, Philip T. Miller, Robert J. Opsitos, Andrew E. Seman, Jr., John K. Horky, James P. Bascom, Todd J. Huston, Matthew Webster, Adan Ayala
  • Patent number: 8522658
    Abstract: A table saw is disclosed. The table saw includes a table top including an opening configured to receive a saw blade, a blade case positioned under the table top, the blade case including an interior portion with the saw blade partially positioned within the interior portion, the blade case configured to move relative to the table top, a motor coupled to the saw blade and configured to move relative to the table top, the saw motor configured to rotate the blade about a blade axis, and at least one moveable guard member positioned between the table top and the blade case, the at least one moveable guard member providing an obstruction to the interior portion of the blade case, and the at least one moveable guard member configured to pivot about a pivot axis when the motor is moved up or down or tilted relative to the table top, wherein the pivot axis is substantially perpendicular to the blade axis.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: September 3, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Andrew Frolov
  • Patent number: 8205533
    Abstract: A saw blade protector for a cutting device having a table for placing thereon a workpiece, a saw blade protruding from an upper surface of the table, and a riving knife disposed in front of the saw blade in a moving direction of the workpiece for cutting the workpiece and positioned in line with the saw blade. The saw blade protector includes a guard plate constructed to cover the saw blade, a holding frame constructed to be mounted on an upper portion of the riving knife and to be able to support the guard plate, and an adjusting device constructed to be able to adjust a position of the holding frame relative to the upper surface of the table.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: June 26, 2012
    Assignee: Makita Corporation
    Inventor: Koji Tanaka
  • Patent number: 8011398
    Abstract: A dust shroud for gas powered circular saws allows for mounting to a circular saw and for use therewith out hindering the use of the saw. The shroud does not interfere with the ability to operate the saw or set the saw on the ground, and effectively collects dust and debris without reducing the depth of cut.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: September 6, 2011
    Assignee: Dustless Depot, LLC
    Inventors: Michael Loveless, Spencer Loveless
  • Patent number: 8006727
    Abstract: A hood assembly for woodworking equipment, the hood assembly having a main frame member, at least one secondary frame member, a hood member, and first and second mounting members. Each secondary frame member is supported relative to the main frame member. The hood member is supported by the main frame member and the at least one secondary frame member. The main frame member is supported by the first and second mounting members. The main frame member and the at least one secondary frame member support the hood member such that the hood member extends over at least a portion of the woodworking equipment.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: August 30, 2011
    Assignee: Fastcap, LLC
    Inventors: Marc Urban, Paul Akers
  • Patent number: 7980924
    Abstract: A cover device for a power tool with at least one disc-shaped working tool (6), includes first and second cover parts (12, 22) and a locking mechanism (41) for releasably pivotally positioning the second cover part (22) relative to the first cover part (12) and having a locking element (46) provided on one of the first and second cover parts (12, 22) and engageable with a counter-locking element (23) provided on another of the first and second cover parts (12, 22), and an actuation member (42) pivotally supported at a pivot point (45) on the one of the first and second cover parts (12, 22) and having an actuation section (43) and a locking section (44) extending at an angle from the actuation section (43), with the locking element (46) being provided at a free end of the locking section (44).
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: July 19, 2011
    Assignee: Hilti Aktiengesellschaft
    Inventor: Thomas Blatz
  • Patent number: 7971512
    Abstract: A cutting device includes a lock device for locking and unlocking a cover against a cover support. The cover includes a first cover removably mounted to the cover support and a second cover removably mounted to the first cover. The lock device is operable in a first mode, a second mode and a third mode. The first mode prevents the first cover from being removed from the cover support and prevents the second cover from being removed from the first cover. The second mode permits the first cover from being removed from the cover support but prevents the second cover from being removed from the first cover. The third mode permits the second cover to be removed from the first cover.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: July 5, 2011
    Assignee: Makita Corporation
    Inventor: Koji Tanaka
  • Patent number: 7806154
    Abstract: A shaper guard includes a fixture assembly having a sleeve adapted to be statically fixed on a shaper and a rotating member pivotally connected with the sleeve. A first guard panel has a connecting portion connected with the sleeve. A second guard panel has a connecting portion connected with the rotating member and is pivotable in concert with the rotating member with respect to the sleeve and the first guard panel. The second guard panel is biasable by the workpiece fabricated on the shaper. The shaper guard has a simple structure.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: October 5, 2010
    Inventor: Jack Yang
  • Patent number: 7665393
    Abstract: A table saw guard assembly for guarding a blade on a table saw is provided. The table saw guard assembly includes a support structure and a hood assembly including at least one of a front curtain, first side curtain, second side curtain and top curtain, wherein each of said curtains are independently moveable and/or removable from the hood assembly. Furthermore, a table saw guard assembly is provided including a quick release mechanism for connecting the hood assembly to the support structure.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: February 23, 2010
    Assignee: Black & Decker Inc.
    Inventors: Michael L. O'Banion, Warren A. Ceroll, James R. Parks, Robert Alan Berry, Robert P. Welsh, Daniel Puzio, Michael L. Agronin, Philip T. Miller, Robert J. Opsitos, Jr., Andrew E. Seman, Jr., John K. Horky, James P. Bascom, Todd J. Huston, Matthew C. Webster, Adan Ayala
  • Patent number: 7472729
    Abstract: A planer including a frame, at least one table mounted on or within the frame, a cutting drum rotatably mounted within the frame, and a motor mounted within the frame and capable of rotatingly driving the cutting drum. The planer also includes a rotatable socket, for receiving a cutting tool, connected to the cutting drum so that rotation of the cutting drum results in rotation of the socket and the cutting tool. The planer further includes a cover for covering the cutting tool and the cover is capable of being moved from a first position where the cover covers the cutting tool to a second position where the cover does not cover the cutting tool.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: January 6, 2009
    Assignee: Black & Decker Inc.
    Inventor: Marcello Bettacchini
  • Patent number: 7434501
    Abstract: A quickly collapsible protective cover unit for a table sawing machine includes two protective covers, two connecting rods, an elongate base and a dividing plate. The dividing plate has its upper end combined between two lengthwise sides of one end portion of the base, provided with plural slots for a fitting rod of plural fixing blocks located at one end portion of the base to fit therein. The slots respectively have a stop edge for retaining the fitting rod therein, not to loosen out of the slots when the fitting rods are pushed in the slots. Then the compress bolt and the fitting rods can tightly force the base and the dividing plate combined with each other. So the protective cover unit can be assembled or collapsed quickly, without using any tool, by handling the compress bolt.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: October 14, 2008
    Inventor: Bor-Yann Chuang
  • Patent number: 7396195
    Abstract: A working machine includes a blade seat movable relative to a sheet plate, and a safety protective device mounted on the blade seat to cover the blades of the blade seat and including at least one swing member pivotally mounted on the blade seat, and a protective board pivotally connected to the at least one swing member. Thus, when any portion of the protective board is pushed by the sheet plate, the whole protective board is driven to pivot relative to the blade seat so that the protective board is moved upward and downward in a whole manner without deflection.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: July 8, 2008
    Inventor: Pin-Feng Chang
  • Publication number: 20070215245
    Abstract: An anti-dust structure for a sliding block of a linear guideway comprises a sliding block and a flexible anti-dust strip. A positioning groove is formed in the inner surface of the sliding block and located correspondingly to the upper steel ball groove. The flexible anti-dust strip has a plurality of lip portions that protrude out of the positioning groove, and the lip portions come into contact with the top surface of the rail. In this way, the flexible anti-dust strip can scrape off the grease and dust accumulated on the top surface of the rail at all times, preventing the dust and grease entering the upper steel ball groove via the top surface of the rail, and thus obtaining a better anti-dust function and ensuring the service life of the linear guideway.
    Type: Application
    Filed: March 18, 2006
    Publication date: September 20, 2007
    Applicant: HIWIN TECHNOLOGIES CORP.
    Inventors: Yun-Yi LIN, Hsin-Tsun HSU
  • Patent number: 7228773
    Abstract: A radial arm saw is adapted with a safety top configured with cutting box enclosure that contains and collects substantially all of the sawdust generated during use. A dust collection system is in fluid communication with the cutting box for removing the sawdust contained therein. Spring biased push blocks function to hold the work piece in place during the sawing process while maintaining the user's hands safely away from the saw blade. A laser alignment device projects a beam within the cutting box along the cutting plane. A control panel is provided to allow use by authorized users upon entry of an authorization code.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: June 12, 2007
    Inventor: Michael S. Powell
  • Patent number: 7044039
    Abstract: A radial arm saw is adapted with a safety top configured with cutting box enclosure that contains and collects substantially all of the sawdust generated during use. A dust collection system is in fluid communication with the cutting box for removing the sawdust contained therein. Spring biased push blocks function to hold the work piece in place during the sawing process while maintaining the user's hands safely away from the saw blade. A laser alignment device projects a beam within the cutting box along the cutting plane. A control panel is provided to allow use by authorized users upon entry of an authorization code.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: May 16, 2006
    Inventor: Michael S. Powell
  • Patent number: 6920814
    Abstract: A woodworking machine is disclosed. The machine includes a cutting tool and a motor adapted to drive the cutting tool. The machine further includes a detection system to detect a dangerous condition between the cutting tool and a person, such as a person coming into contact with the cutting tool. A reaction system is provided to disable the cutting tool, such as by covering, blocking, destroying, wrapping, etc., upon detection by the detection system of the dangerous condition.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: July 26, 2005
    Assignee: SD3, LLC
    Inventors: Stephen F. Gass, David A. Fanning, J. David Fulmer
  • Patent number: 6640854
    Abstract: The invention relates to a treatment unit with a cutting tool (1) for treating wood, plastic or the like. Said treatment unit comprises a suction hood (6) with a ring (17) that encircles the tool (1) completely in the circumferential direction and at least partially in the axial direction. The suction hood (6) is located on the side of the drive spindle of the tool (1). A chip receiving opening (10) is provided in the tool (1) in the vicinity of the blade (4), said opening traversing the tool (1) in both the axial and the radial direction. A chip formed at the blade (4) is transported through the chip receiving opening (10) to the suction hood (6) from where the chip is removed by air suction.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: November 4, 2003
    Assignee: Ledermann GmbH
    Inventors: Kurt Kalmbach, Wilhelm Kalmbach, Hans-Jürgen Gittel, Ewald Westfal
  • Patent number: 6578460
    Abstract: A blade guard and lifter therefor surround the saw blade, interlocking when raised by a workpiece as a result of relative movement caused by a secondary linkage. Two pair of primary linkages pivotally connect the blade guard to the splitter. The dual secondary linkage pivotally attaches the parallel plates of the lifter to one of the two pivot points of the primary linkages. Any lifting force is resisted by the rigidity of the primary link that does not share a pivot point with the secondary linkage. A dust collector can be provided to the table saw to minimize respiratory hazards.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: June 17, 2003
    Inventor: James A. Sartori
  • Publication number: 20020134464
    Abstract: In accordance with the invention a guard device for a standing circular saw, in particular for a bench circular saw, comprising a guard hood which is fixed removably and adjustably in respect of height to an arm fixed to the circular saw machine and which at least partially encloses a saw blade with a hollow space having an opening at the underside of the guard hood and which has at least one suction removal opening for saw waste, which suction removal opening communicates with said hollow space of the guard hood and leads into a suction removal conduit is characterized in that the guide path formed from the hollow space through the suction removal opening into the suction removal conduit has only changes in direction >90°. In a further aspect of the invention such a guard device is characterized in that the guard hood is fixed to the arm in positively locking relationship and can be moved out of the positively locking engagement horizontally in the plane of the saw blade.
    Type: Application
    Filed: February 27, 2002
    Publication date: September 26, 2002
    Applicant: ALTENDORF GMBH & CO. KG
    Inventor: Wilfried Altendorf
  • Patent number: 6311746
    Abstract: A circular saw head for use as a boom mounted head attachment is disclosed for agricultural trimming. The blades can cut as much as four inches of material. An adjustable head piece is provided that is also reversible allowing for exposure of more or less of the blades. Safety aprons are provided to deflect cut material away from the operator.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: November 6, 2001
    Assignee: Alamo Group Inc.
    Inventors: David J. Halvorson, Travis A. Anderson
  • Patent number: 6205668
    Abstract: A protective cover for a carpenter's plane includes a base plate having an upper surface and a width which is substantially similar to a width of the carpenter's plane and opposing side walls having a lower portion attached to opposing edges of the base plate and which extend away from the opposing edges of the base plate to an upper portion of the side walls, the side walls tapering inwardly, toward each other, as they extend away from the base plate. The cover is constructed such that when the cover is in an installed position on the plane, the upper portions of the side walls are flexed outwardly by the plane, resulting in an inward force being applied to the plane by the upper portions of the side walls, the inward force thereby holding the cover in place on the plane. When the cover is in the installed position on the plane, the base plate is operative for covering a cutting iron of the plane.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: March 27, 2001
    Inventor: Joseph P. Fournier, Jr.
  • Patent number: 6170372
    Abstract: A dual spring hold down for use with wood working tools, such as table saws, routers and shapers comprises a bracket mounted on the wood working table behind the tool and a hold down bar pivotably attached to the bracket with the hold down bar surrounding the wood working tool. A threaded rod is threaded into and extends upward from an extension arm of the bracket and though a slot in a hold down bar cross plate. A first coil spring surrounds the threaded rod immediately above the cross plate and a second, stronger coil spring surrounds the threaded rod above the first coil spring while a cylindrical sleeve surrounds the first coil spring. The hold down bar is free to drop down to act as a safety barrier when no wood panel is present. Then, initial lifting of the hold down bar by a wood panel is initially against the relatively light downward bias of the first coil spring until the sleeve is lifted to a “hold down height” at a point sufficient to compress the first coil spring within the sleeve.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: January 9, 2001
    Inventor: Richard A. Weaver