To Cutting Machine To Sharpen Blade Patents (Class 451/419)
  • Patent number: 8932114
    Abstract: Embodiments provide various components of a chain saw, including saw chain elements, sprockets, and other fixtures, that may facilitate sharpening of cutter links during operation. In various embodiments, the components may increase stability during sharpening, provide nose mounted sharpening fixtures, and/or facilitate the resizing and/or reshaping of a sharpening element.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: January 13, 2015
    Assignee: Blount, Inc.
    Inventors: Christopher D. Seigneur, Lance Luedtke
  • Patent number: 8661952
    Abstract: It is an object of the present invention to provide a cutting machine capable of keeping an angle of a cutting edge constant. A support block 14 is provided with two arms 14a, 14b which are spaced at a certain angle, and the arms 14a, 14b have rotation shafts 12a, 13a of rotary whetstones 12, 13, respectively, extending upright from the vicinities of the front ends thereof. The rotary whetstones 12, 13 has, at front ends thereof, flat surfaces 12b, 13b perpendicular to the rotation shafts 12a, 13a to grind the one side 11b and the other side 11c of the cutting edge 11a of the cutting blade 11, respectively. The whetstone holding mechanism 15 can be moved linearly along the guide shaft 16 and can change over grinding states in which the flat surfaces 12b, 13b of the rotary whetstones 12, 13 into contact with the one side 11b or the other side 11c of the cutting blade 11.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: March 4, 2014
    Assignee: Shima Seiki Mfg., Ltd.
    Inventors: Reiji Arikita, Kenji Ikoma
  • Patent number: 8616938
    Abstract: A battery-powered, hand-held blade sharpener features a self-adjusting set of guide rollers which widen to accommodate the thickness of the blade being sharpened. First and second semi-circular face plates mount sets of guide rollers, one of the face plates is mounted for pivotal movement and sprig-biased to a “closed jaw” position which the thickness of the blade opens as necessary.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: December 31, 2013
    Inventor: Mark S. Mills
  • Patent number: 8348722
    Abstract: A mower blade sharpening device comprising a guide body having a sharpening rod guide, a sharpening rod having a sharpener end, and an operator end. The sharpening rod is disposed in the sharpening rod guide. A sharpener is disposed on the sharpener end of the sharpening rod. Also disclosed is a method for sharpening a mower blade using the sharpening device.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: January 8, 2013
    Inventor: Marion D. Arnold
  • Patent number: 8267752
    Abstract: A knife sharpening device of a circular knife contains a wheel member including a sharpening portion disposed therein, the sharpening portion including an abrasive piece mounted therearound, an annular loop with a hole mounted on a central portion thereof, and a peripheral wheel formed therearound; a retaining member connected with one side of the wheel member and including a first rib disposed thereon, an abutting post with a first limiting block extending therefrom, the first limiting block including an insertion extending therefrom, the abutting post including a biasing projection proximate to the abutting post; a connecting member connected on another side of the wheel member and including a second rib disposed thereon, a second limiting block with an opening and plural locking tabs fixed on a central portion of an inner side thereof, the connecting member including a contacting peg arranged adjacent to an inner side thereof.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: September 18, 2012
    Inventor: Pi-Chao Chang
  • Publication number: 20120222313
    Abstract: Embodiments provide various components of a chain saw, including saw chain elements, sprockets, and other fixtures, that may facilitate sharpening of cutter links during operation. In various embodiments, the components may increase stability during sharpening, provide nose mounted sharpening fixtures, and/or facilitate the resizing and/or reshaping of a sharpening element.
    Type: Application
    Filed: March 2, 2012
    Publication date: September 6, 2012
    Applicant: BLOUNT, INC.
    Inventors: Christopher D. Seigneur, Lance Luedtke
  • Patent number: 8216029
    Abstract: It is an object of the present invention to provide a cutting machine capable of sharpening in such a manner that an angle of a cutting edge can be kept constant. A support block 14 is provided with two arms 14a, 14b which are spaced at a certain angle, and the arms 14a, 14b have rotation shafts 12a, 13a of rotary whetstones 12, 13, respectively, extending upright from the vicinities of the front ends thereof. The rotary whetstones 12, 13 has, at front ends thereof, flat surfaces perpendicular to the rotation shafts 12a, 13a to sharpen the one side 11b and the other side 11c of the cutting edge 11a of the cutting blade 11, respectively. The whetstone holding mechanism 15 can be moved in parallel linearly or can swing almost linearly, as mainly indicated by the arrow 15a, to bring the flat surface 12b of the rotary whetstone 12 into contact with the one side 11b of the cutting blade 11, as depicted by a broken line, thereby allowing the switch to the sharpening state.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: July 10, 2012
    Assignee: Shima Seiki Mfg., Ltd.
    Inventors: Kenji Ikoma, Reiji Arikita
  • Publication number: 20120052775
    Abstract: A blade sharpening system is provided that includes a sharpening assembly including a sharpener configured to engage a generally circular agricultural implement blade while mounted on the agricultural implement. The blade sharpening system also includes a rail configured to support the sharpening assembly and to facilitate movement of the sharpening assembly along the rail. The blade sharpening system further includes a mounting feature coupled to the rail and configured to engage a structural member of the agricultural implement to support the rail and sharpening assembly.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Applicant: CNH America LLC
    Inventors: Tracey D. Meiners, Ross L. Gingrich, Ben G. Zimmerman, Alan R. Martin, Paul Hurtis
  • Patent number: 8043142
    Abstract: A food slicer has a support member including a base portion and an upstanding portion integrally formed with the base portion. The upstanding portion includes a rotating cutting blade for slicing food product. The base portion includes a food product table slidably secured thereto for movement across the cutting blade for holding product while it is being sliced. An adjustable gage plate is provided for determining the thickness of a food product to be sliced. A sharpening mechanism for sharpening the cutting blade as needed is removably secured to a portion of the product table to provide accurate sharpening of the cutting blade. The sharpening mechanism includes a first rotating sharpening member and a second deburring member where the first and second members are mounted independent from each other.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: October 25, 2011
    Assignee: Premark FEG L.L.C.
    Inventors: Scott M. Zeeb, Scott J. Rote, Aaron B. Eiger, Frank A. Bondarowicz
  • Patent number: 7909681
    Abstract: A chainsaw sharpener mounted on and forward of the electric motor of a sharpener body (2) via a mounting portion (9) having a guide body (8) with an upper plate face (80) and wall faces (81a to 81e) which have a substantial X-shape as seen in plan view, and which are fit into and along an upper part of the saw chain in alignment with a sharpening angle of either a left or right cutter blade (31, 32) of a saw chain (30). Formed at a substantially central surface of the guide body (8) is an exposure portion made of openings (85, 86) which make it possible to watch, from above, the grinding tool (7) and a cutting edge of a cutter blade to be sharpened. A guide portion (87) presses, from above, the cutter blade to be sharpened so as to prevent the cutter blade from wobbling or tilting, and further to define an accurate cutting edge angle.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: March 22, 2011
    Assignee: Nishigaki Industrial Co., Ltd.
    Inventor: Takanobu Nishigaki
  • Publication number: 20110030223
    Abstract: Embodiments include a sharpening fixture adapted to mount to the nose of a chainsaw guide bar. When mounted, the operator may direct a force towards the guide bar thereby causing a linear directed actuator to move a sharpening element into engagement with cutters of a saw chain to sharpen a cutting edge of the cutters. In various embodiments, the actuator is biased such that when the force is no longer applied, the actuator pulls the sharpening element out of engagement with the cutters.
    Type: Application
    Filed: October 21, 2010
    Publication date: February 10, 2011
    Applicant: BLOUNT, INC.
    Inventors: Christopher Seigneur, Ian Osborne
  • Patent number: 7431637
    Abstract: It is to provide a saw chain sharpener such that while a saw chain is clamped at both ends by a holding plate, which is supported forward of a handy type electric motor, so as to stabilize its sharpening posture, a grinding tool such as a round rod-shaped grinding tool or a round rod-shaped grindstone, which is attached to an end of the electric motor, is rotated at a high speed so as to sharpen, at a side thereof, the saw chain efficiently. A support member is projected forward from a sharpener body which is formed such that a round shaft-shaped grinding tool for grinding is attached to an end of a handy type electric motor.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: October 7, 2008
    Assignee: Nishigaki Industrial Co., Ltd.
    Inventor: Takanobu Nishigaki
  • Patent number: 7401536
    Abstract: In a method of jointing a cutting edge of at least one cutting blade of a rotating tool, wherein between the tool and at least one straight jointing stone a radial advancing movement is carried out and wherein the jointing stone has an active jointing area that is longer than a length of the cutting edge, at least one relative stroke between the jointing stone and the cutting edge is performing during jointing in a longitudinal direction of the cutting edge. The relative stroke has a stroke length that is shorter than the length of the cutting edge.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: July 22, 2008
    Assignee: Michael Weinig Aktiengesellschaft
    Inventors: Heinrich Englert, Albrecht Dawidziak
  • Patent number: 7390243
    Abstract: A sharpener to sharpen the edge of a food slicer blade includes a non-planar abrasive surfaced rotatable disk mounted on a supporting structure. The supporting structure includes one or more surfaces designed to align with at least one of a push bar, thickness control plate and the surface of the food carriage of the food slicer when the abrasive surface of the disk is in contact with the edge of the slicer blade.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: June 24, 2008
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Sr., Jeremy J. Lacombe
  • Patent number: 7320635
    Abstract: A device for sharpening chain saw teeth, in particular a chain saw which is portable and applicable in the field, and where the chain is not to be taken off the chain saw blade when sharpened enables swinging of a grinding wheel (16) transversally to each tooth (8) of a chain (7) resulting in straight cutting faces of each tooth (8). The grinding wheel (16) of the relatively small diameter is rotated by an actuator (15) of the suitably small power and high number of the revolutions resulting in high cutting speed. Said actuator (15) can be either an electric motor, supplied with electricity from electric mains or a battery, a pneumatic motor or a hydraulic motor.
    Type: Grant
    Filed: November 25, 2004
    Date of Patent: January 22, 2008
    Inventor: Drago Cendak
  • Patent number: 7220169
    Abstract: A sharpening apparatus (16) for a blade-like cutting implement. The sharpening apparatus has an elongate body (18) and a cutting edge extending widthwise across one end of the body (11) at a predetermined angle relative to the longitudinal axis of the body (11). The cutting edge is formed by an inclined face formed on one side face of the body. The apparatus includes a cradle (26) for holding a blade-like implement to be sharpened and a mounting body for mounting the cradle (26) relative to a grinding surface. The cradle is mounted on a pair of guide rails (22, 24) for movement along a rectilinear path, the cradle including first and second rail followers slidably connected to a first and second of the guide rails respectively. The cradle (26) includes a seat for locating the blade-like implement at a reselected reference position on the cradle (26) such that the cutting edge of the implement to be sharpened is located parallel to said rectilinear path.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: May 22, 2007
    Assignee: Turner Intellectual Property Limited
    Inventor: Paul Steabben Hepworth
  • Patent number: 7125325
    Abstract: A grinding apparatus (36) for a paper cutting mechanism (10) is shown and includes a coupler (38), for mounting on an upper rail (14) of the cutting mechanism (10), a motor-driven grinder (40), and an adjustable support (42) for adjustably positioning the motor-driven grinder (40) in the direction of the rail (14).
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: October 24, 2006
    Assignee: Jorson & Carlson Co.
    Inventor: Woodrow A. Powers, II
  • Patent number: 6910959
    Abstract: A fixture (1) for guidance of a tool having a cutting edge with respect to the periphery of a rotating grinding or polishing wheel (2), comprising a frame structure that runs along the periphery (6) of the wheel and has a guide formed as a slot (17) with an open other end, the slot providing a support surface (19) that is sloping relative to the radius of the wheel, and the inner end of the slot terminating radially within the periphery of the wheel on each side thereof, the fixture (1) in one end supported (11) for pivoting motion in a main plane of the wheel and in the other end carrying a separate balance weight (12).
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: June 28, 2005
    Inventor: Tore Eklund
  • Patent number: 6814652
    Abstract: A method for sharpening the cutting knives of a knife ring chipper, which includes a knife ring and a number of knife units, the units in turn containing knives and holding plates. The knife ring is removed from the knife ring chipper, the knife units of the knife ring chipper are removed from the knife ring and the knife units are disassembled. The dull knives are moved to a first buffer station and are stored and then moved to a grinder and sharpened. The sharpened knives are moved to a second buffer station and are stored, and the sharpened knives are then mounted onto holding plates in knife units. The knife units are incorporated into a knife ring and the knife ring is incorporated into a knife ring chipper.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: November 9, 2004
    Assignee: B. Maier Zerkleinerungstechnik GmbH
    Inventor: Robert Loth
  • Patent number: 6644154
    Abstract: The cutting blade of a continuous motion saw is mounted on a skew arm which rotates about an axis which is skewed relative to the path along which the product to be cut is advanced. The blade rotates about an axis which is parallel to the path. The blade orbits in a planetary manner to compensate for the skew angle and to ensure that the blade remains perpendicular to the path. Grinding stones for the blade are mounted radially inwardly of the blade throughout the entire orbit of the blade.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: November 11, 2003
    Assignee: Paper Converting Machine Co.
    Inventors: Larry D. Wierschke, Jeremy J. M. Papadopoulos
  • Publication number: 20030054737
    Abstract: A method and jointing attachment 10 for jointing the inserted tooth carbide heads 105 on the top 102 and bottom 103 rotary cutter heads of a thickness planer 100 having a movable carriage 104 that supports the bottom cutter head 103 and is provided with a laterally translatable grinding element 108 wherein the jointing attachment 10 includes an auxiliary motor member 40 that is mounted in a pivoted free floating fashion relative to the movable carriage 104 of the thickness planer 100 and supported by a drive belt member 50 that is attached to a selected one of the rotary cutter heads 102 103 and a pulley reel 43 mounted on the output shaft 42 of the auxiliary motor member 40 for imparting a counterclockwise rotation of the selected cutter head 102 103 to joint the inserted tooth carbide heads 105 through engagement with the grinding element 108.
    Type: Application
    Filed: September 17, 2001
    Publication date: March 20, 2003
    Inventor: David L. Dwyer
  • Patent number: 6503135
    Abstract: A chopper drum includes a plurality of knives distributed along its width and about its circumference. A grinding device is provided for automatically sharpening the knives, with a grinding stone of the grinding device having its movement automatically controlled by a microprocessor, which receives signals from an actual shape sensor and compares it with a stored desired shape and generates control signals, such that it shapes the profile of the chopper drum to at least approximate the desired shape.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: January 7, 2003
    Assignee: Deere & Company
    Inventors: Steffen Clauss, Stanley Jerome Johnson
  • Patent number: 6475063
    Abstract: An automatic grinding device for sharpening the knives of a forage harvester chopper drum includes a controller including a counter for counting the number of times the grindstone is adjusted toward the chopper drum during sharpening operation. The controller includes a microprocessor having a non-volatile memory in which may be stored a threshold value, determined by the type of grindstone, to which the count of the counter may be compared for generating a signal indicating the degree of wear of the grindstone so that it may be replaced when worn out.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: November 5, 2002
    Assignee: Deere & Company
    Inventor: Helmut Wolf
  • Publication number: 20020009964
    Abstract: A grinding arrangement for grinding knives of a chopper drum of a forage harvester includes a movement arrangement for effecting movement of a grinding stone over the length of each of the knives, where individual locations of the knives can be associated with differing grinding times in order that the knives be ground to produce a desired cylindrical profile. A control for the movement arrangement may include either a sensor for determining the need for grinding a given knife at a precise location along the knife and the grinding time required for achieving a desired profile, or predetermined information stored in memory which operates to automatically cause a certain amount of grinding time to elapse in accordance with a specific axial position of the grinding stone.
    Type: Application
    Filed: July 19, 2001
    Publication date: January 24, 2002
    Applicant: Deere & Company, Delaware corporation
    Inventors: Helmut Wolf, Henrik Nieschulze
  • Publication number: 20020009963
    Abstract: A chopper drum includes a plurality of knives distributed along its width and about its circumference. A grinding device is provided for automatically sharpening the knives, with a grinding stone of the grinding device having its movement automatically controlled by a microprocessor, which receives signals from an actual shape sensor and compares it with a stored desired shape and generates control signals, such that it shapes the profile of the chopper drum to at least approximate the desired shape.
    Type: Application
    Filed: June 5, 2001
    Publication date: January 24, 2002
    Applicant: Deere & Company a Delaware corporation
    Inventors: Steffen Clauss, Stanley Jerome Johnson
  • Publication number: 20010023169
    Abstract: A movable frame assembly to move a device for dressing a grinding wheel for the sharpening an ice skate blade. The device uses a housing surrounding a grinding wheel and movable frame with a swing arm. A dressing tool is mounted in the dresser swing arm and the dresser swing arm is rotatable between a storage position and an operating position. The movable frame assembly slides along rails to allow positioning of the dressing tool into the grinding wheel. Horizontally and vertically disposed bearings are positioned beside and under a rail with resiliently biased bearings are held against the top of the rail. The bearings help the rails of the movable frame move smoothly. The rails are spaced apart by yokes on the arm or a bar across the top of the dresser to prevent binding as the movable frame is slid for dressing the wheel. Adjustment of the rails is also provided for by adjustment slots at the back of the rails.
    Type: Application
    Filed: May 21, 2001
    Publication date: September 20, 2001
    Inventor: Glenn Sakcriska
  • Patent number: 6261161
    Abstract: A sharpener assembly for a food slicer includes a rotatable frame with a sharpening member and a truing member operatively connected for rotation with the frame. The frame is mounted on a food slicer to place the sharpening member and truing member on opposed sides of a slicer knife. The frame is rotated to rotate the sharpening member and the truing member into contact with respective sides of the slicer kife.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: July 17, 2001
    Assignee: Premark FEG L.L.C.
    Inventor: Gongpu Yan
  • Patent number: 6257967
    Abstract: A sharpening tool for a veneer knife has a primary stone and a secondary stone driven by a power head. The secondary stone is inclined at an angle to the primary stone corresponding to the angle of the defined faces of the veneer knife cutting edge. Outrigger supports are provided as gauge and guide members for the sharpening tool. The primary stone engages one face of the cutting edge and the secondary stone engages the other face of the cutting edge. The secondary stone is forcibly engaged with the primary stone and is rotatably driven by the primary stone.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: July 10, 2001
    Inventor: Jim Schultz
  • Patent number: 6241595
    Abstract: This invention is a sharpening device for lawn edger blades. The device is specifically designed for attachment to the machine and in use for when the machine is in operation. The reason for this is to keep the cutting edge of the blade continually sharp. The attachment is positioned near the cutting edge and sharpens the blade as it rotates. A manual switch or lever activates the sharpener as the user desires. The sharpener includes a caliper with an abrasive surface to squeeze against the rotating blade while the edger is in operation.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: June 5, 2001
    Inventor: Richard Skinner
  • Patent number: 6083088
    Abstract: An implement working adapter has a casing within which is a pulley-drive system for transferring drive from a powered grinding tool, with which the adapter is engaged, in use, to a pair of first and second grinding wheels within the casing, drive being transmitted via a drive belt engaged, in use, by a take-off pulley of the tool drive. The adapter defines three implement working locations for sharpening scissor blades, knives and screwdriver blades respectively, each location providing one or more slots for blade insertion. An angularly movable scissor guide has a slot for an inserted scissor blade to engage the first grinding wheel, whilst the slots for reception of the knife blades allow engagement with either grinding wheel as selected. The screwdriver blade engages the second grinding wheel when being sharpened, in use.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: July 4, 2000
    Assignee: Turner Intellectual Property Limited
    Inventor: Paul Steabben Hepworth
  • Patent number: 5964648
    Abstract: A method and apparatus for sharpening the knives of a chipper, with the knives remaining in a knife basket during sharpening, and the knife basket being removed from the chipper and placed in a knife basket carrier in which it is rotatably mounted. The knife basket is first locked against rotation, and then a sharpening device, such as a grinding mechanism, is moved in a direction parallel to the knife basket axis along a first knife or group of knives for purposes of sharpening. After sharpening the first knife or group of knives, the knife basket is unlocked and the sharpening device and knife basket are rotated relative to each other, with the sharpening device proceeding to a new working position for sharpening a further knife or group of knives. The above cycle is repeated until all knives have been sharpened. The knife basket is then reinstalled in the chipper.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: October 12, 1999
    Assignee: B. Maier Zerkleinerungstechnik GmbH
    Inventor: Robert Loth
  • Patent number: 5941148
    Abstract: A device for automatically sharpening the circular cutting edge of a disk-like blade while it is rotatably mounted in a blade cartridge is disclosed. The sharpener includes a coupling assembly adapted to matingly retain the cartridge in the same manner that it is retained in a slitter machine. A rotary drive assembly is adapted to engage with and rotate the disk-like blade while in the cartridge. A blade sharpening head is adapted to engage and sharpen the disk-like blade as the blade is being rotated by the rotary drive assembly.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: August 24, 1999
    Assignee: Tidland Corporation
    Inventors: William R. Miller, Richard M. Holbert, Robert Shinn, Semion Stolyar
  • Patent number: 5924914
    Abstract: A rotary cutter head knife jointer is disclosed, in which a rigid base is adapted for mounting in a fixed position adjacent a rotary cutter head. The jointer includes a first carriage and a first guide that mounts the first carriage to the rigid base for translational movement along a first prescribed path. A second carriage is mounted to the first carriage and includes a jointing stone holder and a bolster plate. A second guide member mounts the bolster plate to the first carriage for translational movement along a second prescribed path. The second guide member includes a pair of parallel elongated guide bars that are mounted between the first carriage or bolster plate, to define the second prescribed path. A pair of guide bar engaging members are located on one or both of the first carriage and bolster plate.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: July 20, 1999
    Inventor: Harry W. Engh
  • Patent number: 5868124
    Abstract: A radius dresser is provided including a base removably secured to a recipient surface. Also included is a cutting tip holder rotatable and radially slidable with respect to the base. The holder is selectively fixed with respect to the base. The holder has a cutting tip situated along a radius which remains along a direction in which the cutting tip holder is slidable.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: February 9, 1999
    Inventor: Thomas E. Horsch
  • Patent number: 5853318
    Abstract: A roll surface grinder includes a frame mounted on a carriage assembly for traversing movement between opposite sides of the frame in a direction parallel to the axis of the roll subject to grinding. The carriage assembly includes a linear drive system for controlling the transverse back-and-forth motion and speed of the carriage assembly along the frame during grinding. The carriage assembly includes a swing arm pivotally mounted on the frame and pivotal relative to the carriage assembly. The pivot angle of the swing arm relative to the carriage assembly can be adjusted manually to adjust the depth of the grinding.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: December 29, 1998
    Assignee: Consolidated Process Machinery, Inc.
    Inventors: Kelsey C. Thom, Heath L. Hartwig
  • Patent number: 5755825
    Abstract: A sharpening device for use with a continuous flexible band cutting blade. The sharpening device includes a pair of rotating abrasive wheels positioned on opposite sides of the cutting blade. The rotating wheels are mounted to a pivot plate on either side of a pivot point between the pivot plate and an assembly arm. The pivot plate is rotatable about the pivot point through the application of a pressure device to the pivot plate. By rotating about the pivot point, the pivot plate moves the abrasive wheels into contact with the cutting blade to facilitate sharpening. The assembly arm is fixed about its upstream end, while the downstream end is movable to adjust the position of the abrasive wheels.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: May 26, 1998
    Assignee: Marquip, Inc.
    Inventors: David G. Kadlecek, Jeffrey L. Erickson
  • Patent number: 5727991
    Abstract: An apparatus and method for sharpening machine tool cutter blades in situ is disclosed. A connector adjustably connects a powered sharpening device to the apparatus. Further adjustment of the apparatus relative to the blades is provided by a body member mounting adjustable arms. One of the arms engages the back of the blade being sharpened, thereby providing a reliable and true reference. A second embodiment sharpens rotary saw blades while a third embodiment sharpens router and shaper bits.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: March 17, 1998
    Inventor: Richard E. Main
  • Patent number: 5725415
    Abstract: A portable grinding machine for grinding the bottom blade or bedknife of grass mowers. The grinding machine includes a rotary grinding wheel assembly arranged for linear motion, where the wheel assembly can adjust along the blade or bedknife and grind them.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: March 10, 1998
    Inventor: Stephen G. Bernhard