Including Tools Resiliently Urged Toward Work Patents (Class 451/486)
  • Patent number: 11253968
    Abstract: An adjustable sharpener including a body having two sharpening slots, a first arm with a first abrasive element connected to a second arm with a second abrasive element, and a third arm with a third abrasive element connected to a fourth arm with a fourth abrasive element. The first and second abrasive elements are positioned in the first sharpening slot, and the third and fourth abrasive elements are positioned in the second sharpening slot. The adjustable sharpener also includes an adjuster connected to the body and an adjustment assembly connected to the adjuster, the first arm and the third arm. Linear movement of the adjuster causes rotational movement of the first arm and the third arm. In this regard, the adjuster allows the user to manually increase or decrease the sharpening angle between the abrasive elements in the sharpening slots.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: February 22, 2022
    Inventors: Louis Chalfant, Ricky L. Dukes
  • Patent number: 11229988
    Abstract: A device for sharpening a knife. The device includes an enclosure, first and second grinding strips, first and second grinding strip holders, and first, second, third and fourth pendulum rods. Each of the first and second grinding strip holders have a lower section. The first grinding strip holder holds the first grinding strip and the second grinding strip holder holds the second grinding strip. The first and second grinding strip holders are movably arranged next to each another in the enclosure so that the first and second grinding strips intersect to form a movable sharpening slot having a V-shape. The first and second pendulum rods are hinged to the first grinding strip holder at the lower section via a lower joint. The third and forth pendulum rods are hinged to the second grinding strip holder at the lower section via a lower joint.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: January 25, 2022
    Inventor: Sebastian Mader
  • Patent number: 11192217
    Abstract: Apparatus and method for sharpening a cutting tool, such as but not limited to a knife. A sharpener has a housing with a sharpener stage adapted to facilitate a sharpening operation upon the cutting tool responsive to retraction, by a user, of the cutting tool along a longitudinal drawing axis. A tiltable sharpening mechanism is disposed within the housing adjacent the sharpening stage. The tiltable sharpening mechanism has a central body that is rotatable about a transverse rotational axis nominally orthogonal to the longitudinal drawing axis. The rotatable central body supports at least a first sharpening element. In some cases, the central body supports a pair of intersecting sharpening elements. A biasing member exerts a biasing force to urge the central body of the tiltable sharpening mechanism to a neutral position within the housing. The central body can be locked in neutral, positive rake and negative rake positions.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: December 7, 2021
    Inventor: Joseph T. Zachariasen
  • Patent number: 11103976
    Abstract: A cutter sharpener includes a base with a receiving unit, the receiving unit having a pivoting portion and a mounting portion with a positioning section; a support having a pivoting portion pivotally connected to the pivoting portion of the base, a sharpening block mounting portion and a positioning section positioned in the positioning section of the base, and a sharpening block mounted in the sharpening block mounting portion of the support.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: August 31, 2021
    Inventors: Race Wu, Isaac Vellekamp
  • Patent number: 10850369
    Abstract: A grinder/polisher apparatus is disclosed, the apparatus comprising first and second sets of grinding elements (2, 3) facing each other under an angle (?) thus forming between the sets of grinding elements a V-groove in which the cutting edge of a knife is insertable for movement upon grinding, wherein the grinding elements are supported in holders (5, 6). The grinding elements (2, 3) are pivotally arranged in the holders (5, 6) about axes (R, R?) the inclinations of which correspond with the opening angle (?) of the V-groove.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: December 1, 2020
    Inventor: Tore Eklund
  • Patent number: 10399208
    Abstract: A sharpening apparatus that may be used by a relatively unskilled person to simultaneously sharpen the two opposed cutting edges of a knife blade by hand and to maintain a sharpened cutting edge along the blade with minimal effort and training is provided by the invention. The apparatus comprises a panel member with a slot partially extending from its top edge, and a pair of sharpening steels that are pivotably mounted to the panel member to swing downwards in a crossed relation across the slot. A pair of counterweights or leaf springs biases the sharpening steels into their standby position. When the knife blade is moved down through the slot, it comes into contact with crossed sharpening steels to bow them outwards under tension applied by the leaf springs.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: September 3, 2019
    Assignee: Razor Edge Systems, Inc.
    Inventor: Joseph C. Juranitch
  • Patent number: 9545703
    Abstract: A sharpening apparatus that may be used by a relatively unskilled person to simultaneously sharpen the two opposed cutting edges of a knife blade by hand and to maintain a sharpened cutting edge along the blade with minimal effort and training is provided by the invention. The apparatus comprises a panel member with a slot partially extending from its top edge, and a pair of sharpening steels that are pivotably mounted to the panel member to swing downwards in a crossed relation across the slot. A pair of leaf spring bias the sharpening steels in their standby position. When the knife blade is moved down through the slot, it comes into contact with crossed sharpening steels to bow them outwards under tension applied by the leaf springs.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: January 17, 2017
    Assignee: Razor Edge Systems, Inc.
    Inventor: Joseph C. Juranitch
  • Patent number: 9333612
    Abstract: Apparatus for sharpening a cutting tool. In some embodiments, a tool sharpener is provided with a flexible abrasive medium having an abrasive surface and arranged along a planar extent. A guide assembly has a guide frame, a cam surface, and a pivotal guide member. A guide surface on the guide member extends at a selected angle with respect to the planar extent of the medium to support a first side of the tool during presentation of a second side and cutting edge of the tool against the abrasive surface along the planar extent. A cam follower contactingly engages the cam surface to establish the selected angle. A biasing mechanism applies a biasing force to urge the guide surface to pivot toward the planar extent to maintain the cam follower in contact with the cam surface.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: May 10, 2016
    Assignee: Darex, LLC
    Inventor: Daniel T. Dovel
  • Patent number: 9132530
    Abstract: A knife sharpening device contains: a main whetstone portion and a sub whetstone portion. The main whetstone portion includes a bevel seat, two stopping protrusions, at least one first support piece, at least one second support piece, and a main sharpening block. The bevel seat has a tilted face, the at least one first support piece, the at least one second support piece, the main sharpening block, and the sub whetstone portion. The sub whetstone portion includes at least one sub sharpening block, an auxiliary sharpening face, and a concave wall. Each sub sharpening block has the auxiliary sharpening face defined on a front surface thereof and corresponding to the main sharpening block of the main whetstone portion, and the concave wall is defined below the auxiliary sharpening face.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: September 15, 2015
    Inventor: Kuo-Pin Lin
  • Publication number: 20150135904
    Abstract: A knife sheath and sharpener includes a body having opposing first and second sidewalls, a closed bottom, a closed tip portion, an open end portion and an open top portion interconnected to define a knife receiving cavity. A pair of opposing first and second sharpening elements are disposed within the knife receiving cavity. The first sharpening element is pivotally attached to the first sidewall and the second sharpening element is pivotally attached to the second sidewall at a location longitudinally offset from the first sharpening element.
    Type: Application
    Filed: October 28, 2014
    Publication date: May 21, 2015
    Inventors: Luis Eduardo Salazar Leon, Luis Jose Salazar Gago
  • Patent number: 8851961
    Abstract: In one aspect, the invention is directed to a sharpener for sharpening a corner edge of a snow travel member, which may be, for example, a ski or a snowboard. The corner edge is between a bottom face and a side face of the snow travel member. The sharpener includes an angle adjustment mechanism to adjust the angle between surfaces on the sharpener that support the bottom face and side face of the snow travel member, in order to accommodate different snow travel members, that may have different angles between their bottom face and their side face. For example, the angle adjustment member may be capable of adjusting the angle between a bottom face orienting surface on the sharpener and a side face orienting surface on the sharpener between a range of angles. The range of angles may be, for example, a range from 85 degrees and 90 degrees.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: October 7, 2014
    Assignee: Magna Closures Inc.
    Inventors: Thomas P Frommer, Christopher Theodore Kontos, Shawn Marchand, Marc R Plourde, Austin O'Neill, Kurt Schatz
  • Publication number: 20140106651
    Abstract: Grinding heads rotate about central axes, have surfaces between plane and cylindrical surfaces provided with retainer grooves for edge profile parts of a number of abrasive paper members with associated support brushes. Abrasive paper members are mounted at angles of 20-40°, preferably about 30°, directed obliquely forward in the direction of rotation of the plane surface and a tangential plane of the cylindrical surface. Retainer grooves for edge profile parts of the abrasive paper members extend obliquely rearward in the direction of rotation of the plane surface at an angle of 3-10° relative to a radial extension. Alternatively, the retainer grooves extend obliquely rearward in the direction of rotation of the cylindrical surface at an angle of 3-10° relative to an axially parallel generatrix of the cylindrical surface. In a simple way a more optimal abrading of particularly outer side edges and edge areas of plate-shaped items is readily achieved.
    Type: Application
    Filed: May 25, 2012
    Publication date: April 17, 2014
    Applicant: Flex Trim A/S
    Inventor: Poul Erik Jespersen
  • Patent number: 8690644
    Abstract: An arm 21 has a shape for grasping a part in a circumferential direction of a tool holder 7. The arm 21 is connected to the tool holder 7 with a bolt 23 inserted into a fixing hole 22 provided in a base side portion of the arm 21. A tapped hole 25 used for exchangeably attaching a cutting tool 24 is formed in a tip side portion of the arm 21. A groove part 26 extending in parallel to an axis of the tool holder 7 is formed in a position close to the base portion of the arm 21. Owing to the groove part 26, the arm 21 works as an elastic hinge when an external force is applied, so as to increase or decrease a radial dimension of the cutting tool 24 while keeping its parallelism to the axis of the tool.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 8, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Satoru Uchiumi, Naoya Matsunaga, Masahiko Masuzaki, Koji Saito
  • Patent number: 8613645
    Abstract: A honing tool comprises a tubular tool body fastened with an end section in a tool shank and a cutting region on an opposite end section with at least one honing-stick accommodating opening. The dimensions of the honing-stick accommodating opening and of the honing stick are matched to one another so that the honing stick is accommodated in a radially movable manner, and essentially free of play in a circumferential direction of the tool body, between boundary surfaces of the honing-stick accommodating opening. A play-compensating device between the honing stick and the honing-stick accommodating opening comprises at least one elastically deformable supporting element which is supported with a pressure force, in a fitted state of the honing stick, on one hand on a side surface of the honing stick and on the other hand on a boundary surface, opposite the side surface, of the honing-stick accommodating opening.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: December 24, 2013
    Assignee: KADIA Produktion GmbH + Co.
    Inventors: Joachim Wiederhold, Henning Klein
  • Patent number: 8591291
    Abstract: A grinding apparatus includes at least two oppositely arranged series of surfaces in slanting relative orientation and alternately overlapping each other, forming this way a groove into which an edge or cutting edge is insertable for polishing by the surfaces. The surfaces of each series of surfaces are arranged in a common plane forming a side in a respective block, the blocks arranged in a holder by which each block is spring biased towards the opposite block, the blocks operated in reciprocating movement transversely to the longitudinal direction of the edge/cutting edge while the surfaces contact opposite sides of the edge/cutting edge under spring action.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: November 26, 2013
    Inventor: Tore Eklund
  • Patent number: 8535120
    Abstract: A blade sharpening system is provide that includes a base and a pendulous arm having a first end rotatably coupled to the base by a pivot joint. The blade sharpening system also includes a sharpener suspended by the pendulous arm and configured to engage a generally circular agricultural implement blade while mounted on the agricultural implement. The pendulous arm is configured to enable movement of the sharpener to accommodate lateral variations in blade profile.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: September 17, 2013
    Assignee: CNH America LLC
    Inventors: Robert A. Zemenchik, Ivan Rieke, Mark Hoffman, Ross L. Gingrich, Ben G. Zimmerman, Alan R. Martin, Tracey D. Meiners, Michael G. Kovach, Paul Hurtis
  • Patent number: 8282448
    Abstract: A sharpening device 1 for knife blades comprising a base plate 2 with a guiding slot 6, designed as an incision in the base plate 2, for a knife blade to be sharpened and sharpening rods 10a, 10b disposed on both sides of the guiding slot 6 to be pivotable against an elastically resilient restoring force, wherein the guiding rods 10a, 10b intersect at a point of intersection 11 in the area of the guiding slot 6. At least one of the two walls of the base plate 2, which are disposed opposite to each other and form the guiding slot 6, thereby forms a knife abutment surface 7a, 7b and at least one magnet 20, 21, 22 is mounted to the base plate 2 in the area of the knife abutment surface 7a, 7b.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: October 9, 2012
    Assignee: Friedr. Dick GmbH & Co. KG
    Inventor: Horst Loehnert
  • Patent number: 8080073
    Abstract: A method of making an abrasive article including the steps of treating a plurality of cavities in a contacting surface of a production tool by plasma deposition of a thin film thereby forming a plurality of plasma treated cavities. Filling the plurality of plasma treated cavities in the production tool with an abrasive slurry, and at least partially curing the abrasive slurry while residing in the plurality of cavities.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: December 20, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Moses M. David, Scott R. Culler, John T. Boden
  • Publication number: 20110195645
    Abstract: There is disclosed a tool for smoothing or polishing an optical surface. The tool comprises: a body part which is rotatable about an axis of rotation; and a plurality of pads arranged in an array to bear against said optical surface for movement across the surface as the tool is rotated about said axis of rotation, wherein said pads are each mounted: i) for substantially linear movement relative to said body part in a direction substantially normal to said surface in the region where the pad contacts the surface; and ii) universal pivotal movement relative to said body part. The pads are biased towards said optical surface. In a preferred arrangement, a plurality of pistons are mounted for individual reciprocating movement relative to the body part along respective longitudinal axes, each of said pistons having a distal end to which a respective said pad is universally articulated, wherein said pistons are each biased towards said optical surface.
    Type: Application
    Filed: February 7, 2011
    Publication date: August 11, 2011
    Applicant: QIOPTIQ LIMITED
    Inventor: Colin Williams
  • Publication number: 20090163127
    Abstract: An abrasive article comprising a sheet-like structure having a major surface and having deployed in a fixed position thereon a plurality of precisely-shaped abrasive composites in an area spacing. Each of the precisely-shaped abrasive composites comprising a plurality of abrasive particles dispersed in a binder and wherein the abrasive article has a Precisely-Shaped Abrasive Composite Defect Rate of between 0 percent to about 30 percent.
    Type: Application
    Filed: June 17, 2008
    Publication date: June 25, 2009
    Inventors: Moses M. David, Scott R. Culler, John T. Boden
  • Patent number: 7503241
    Abstract: The invention relates to a device (1) for sharpening the blade of a manual cutting tool, in particular a knife. The inventive device comprises a support (2) provided with a cutout (4). Identical sharpening levers are arranged on each side of the cutout in front and in staggering manner with respect to each other and provided with a curved arm (13) having a rectilinear end edge (14) and another arm (16) forming means for returning in a position by gravity. Each lever (11) is pivotally mounted in the jointing area (15) of the arms (13, 16) around an geometrical axis which is generally perpendicular to a longitudinal direction (A-A?) of the cutout and a slot (5). Said device is particularly adapter to the agriculture and food industry.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: March 17, 2009
    Assignee: Dassaud Fils
    Inventors: Nathalie Dassaud, René Dassaud
  • Patent number: 7172500
    Abstract: A knife sharpener has a housing, a base, a sharpening device and an adjustable device. The housing has a case, a cavity and a slot. The cavity is defined in the case and the slot is defined in the case and communicates with the cavity. The base is mounted on the housing and has a base board and two side walls formed on the base board. The sharpening device is movable mounted on the base and is received inside the housing. The sharpening device has two sharpening arms with sharpening rods. The adjustable device is mounted on the sharpening device mounted between the two sharpening arms. When the knife sharpener is used, the adjustable device is rotated to change the cross-position of the sharpening device. Therefore, a knife may be sharpened at a different site on the sharpening rods for prolonging the life span of the knife sharpener.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: February 6, 2007
    Inventor: Wen-Chiu Wu
  • Patent number: 7008311
    Abstract: A lapping tool capable of increasing the accuracy of a lapping operation, extending the life of lapping tool itself, adjusting a lapping diameter, and coping with the lapping operation of various diameters, comprising a lapping tool body having a lapping part on the outer peripheral surface thereof and slits provided in the lapping tool body axially between the tip part and the base part thereof.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: March 7, 2006
    Assignee: Senjo Seiki Corporation
    Inventor: Motohiro Senjo
  • Patent number: 6905403
    Abstract: The invention relates to a knife sharpening machine comprising a plate-type holding device on which two intersecting sharpening bars are rotationally mounted and loaded in relation to each other by means of springs. The sharpening bars, at least in the grinding area, are made of a ceramic material. The plate is provided with a slit which is open on one end and closed on the other, extending as far as the intersection point of the sharpening bars. When pressure is exerted by the knife in the direction of the closed slit end, the sharpening bars are spread apart from each other counter to the force of the springs. Curved guides are provided on both sides of the slit. The ends of the sharpening bars, facing away from the axes of rotation thereof, are guided therein.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: June 14, 2005
    Inventors: Harald Stallegger, Alois Spreitz
  • Patent number: 6817931
    Abstract: An end face polishing apparatus has a lapping board mounted to undergo rotation and revolving movement, a lapping member having a polishing surface and disposed on the lapping board for rotation and revolving movement therewith, a polishing fixture for supporting a workpiece having an end face, and a pressing member. During a polishing operation, preselected portion thereof to bring the end face of the workpiece into pressure contact with the polishing surface of the lapping member and to dispose the preselected portion at a position closer to the polishing surface than to a center of gravity of the polishing fixture to thereby polish the end face of the workpiece during rotation and revolving movement of the lapping board.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: November 16, 2004
    Assignee: Seiko Instruments Inc.
    Inventor: Kouji Minami
  • Patent number: 6769326
    Abstract: A device for sharpening the blades of sharp tools includes a plate fitted with an opening letting through the tool blade, opposite which opening are provided two sharpening structures in the form of oblong spindles which cross one another. Both these sharpening spindles are hinged at one of their ends on the plate, each on one side of the opening, and they include an elastic recall device for forming a sharpening V mobile under the pressure of the blade to be sharpened. Each sharpening spindle has a U-shaped rod with two parallel or substantially parallel arms which are connected at the bottom of the U and both fee ends of the U include square junctions forming hinging axes which are recessed, free to rotate, in offset engagement orifices provided on an appropriate support interlocked with the plate, in order to obtain elastic recall of the sharpening spindles by a twisting effect.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: August 3, 2004
    Assignee: Bobet Materiel
    Inventor: Jean-Pierre Bodard
  • Patent number: 6722967
    Abstract: A resilient sanding mechanism is provided for sanding the contours of a working surface, such as an aircraft body. The mechanism comprises an elongate frame having a frame axis, a sander mechanism pivotally engaged to the frame and having a sanding surface disposed distal to the frame. A resilient biasing apparatus is engageable to the sander mechanism and to the frame, for biasing the sander mechanism sanding surface in a predetermined orientation with respect to the frame axis.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: April 20, 2004
    Assignee: Northrop Grumman Corporation
    Inventors: Ronald Alan Oddo, John Charles Firm, Kenneth Scott Corkill, Coyte Richard Jones, Ronald EuGene Roche
  • Patent number: 6689385
    Abstract: The compositions and dosage forms of the invention are clinically useful as methods for increasing the effectiveness, efficiency and safety of biguanides (metformin) and/or sulfonylureas in the prevention and treatment of insulin resistance and diabetes mellitus, alone or in combination, as a nutrient for humans. The carefully chosen active ingredients of the invention are designed in a modular fashion to prevent and rectify adverse events associated with insulin resistance syndrome and diabetes mellitus, and with the clinical use of biguanides (metformin) and/or the sulfonylureas. These modules are: (1) Mitochondrial Metabolic Group, (2) Plasma and Mitochondrial Membrane Integrity Group, (3) Nocturnal Group and, (4) Insulin Alternative Group. When used in concert with a biguanide, a sulfonylurea or with a combination of both, the invention will broaden the clinical usefulness of these drugs.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: February 10, 2004
    Assignee: Chronorx LLC
    Inventors: Kenneth T. Richardson, Don C. Pearson
  • Patent number: 6679767
    Abstract: The invention concerns a device for sharpening or polishing the blade of a knife, having a slit 2 which is provided in a base plate 1 and which is open towards the outside, for guiding the knife blade, and with processing rods 3, 3′ which are pivotably disposed on each side of the slit 2 in opposition to an elastically resilient restoring force and which intersect in the region of the slit 2, wherein the knife blade can be applied to their point of intersection 16.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: January 20, 2004
    Assignee: Friedr. Dick GmbH
    Inventor: Horst Löhnert
  • Publication number: 20030139126
    Abstract: A knife sharpener comprising a housing plate supporting a pair of sharpening rods that are curved to a specified dimension for maximizing the knife sharpener's ability to utilize and engage adjustable flexible bumper arms mounted on a positive stop that provides the sharpener's rods best angles and pressure for obtaining an even, consistent edge realignment, no matter what sharpening technique is used. Adjustable spring and cam mechanisms enable easy positioning of the initial, crossing-point of the sharpening rods over the center of a sharpening slot.
    Type: Application
    Filed: November 12, 2002
    Publication date: July 24, 2003
    Applicant: Southern Mechanical & Structrual, Inc.
    Inventors: Jeffrey Allen Harden, Scott Neal
  • Patent number: 6296550
    Abstract: A new method of polishing very large diameter wafers. Multiple polishing pads are provided. Each polishing pad rotates around the Z-axis. Each pad can be individually controlled for Chemical Mechanical Planarization (CMP) process parameters such as pressure, rotation speed, slurry feed and slurry mixture. The planarization process can be controlled or optimized by individual rotating polishing pad or by a grouping of one or more rotating polishing pads. The wafer being processed can be rotated which further reduces the dependence on existing pad conditions which in turn translates into reduced use of slurry and prolonged life-time of the polishing pad.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: October 2, 2001
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Erzhuang Liu, Yang Pan
  • Patent number: 6290582
    Abstract: The invention relates to a sharpening device for sharpening cutting edge tools and the like, comprising two sharpening elements arranged, at a distance from each other in the axial direction, for rotation on a shaft extending along a center axis common to the sharpening elements. The sharpening elements have arms extending radically outwards from the shaft, said device being characterized in that the sharpening elements are arranged relative to each other in such a way, that their respective arms are inclined towards each other so that they intersect their respective paths of rotation, the arms, then, coming from a respective of the two sharpening elements, in an alternating way.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: September 18, 2001
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Tore Eklund
  • Patent number: 6106370
    Abstract: The pipe cleaner attachment includes a housing, a shuttle, and a shuttle guide. The housing has a closed end, an open end, a key and two brush levers and brush pad guide slots. The shuttle guide is a rod clamped in a bore through the closed end of the housing. The end of the rod outside the housing is clamped in a drill chuck for use. The shuttle is slideably mounted in the housing on the shuttle guide and engages the housing key, A pair of brush levers are pivotally mounted in the brush guide slots. A brush pad is attached to an end of each brush lever. Burnishing grooves are provided in the shuttle for burnishing the open ends of pipes with two different diameters. Upon insertion of a pipe into the housing, the pipe end is reamed, the burnishing grooves burnish the pipe end, the shuttle is moved toward the closed end and the brush pads clean the outside surfaces of the pipe.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: August 22, 2000
    Inventor: Sam W. Carter
  • Patent number: 5976002
    Abstract: A knife sharpener is provided including a base. A plurality of sharpening members are positioned on the base and situated in side-by-side relationship. Also included is a biasing assembly for urging the sharpening members into abutment.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: November 2, 1999
    Inventor: Gilbert Keough
  • Patent number: 5655959
    Abstract: Apparatus for providing a sharpened edge on an elongated cutting tool comprising a base member having an elongated slot therein and a pair of elongated sharpening elements each pivotally mounted on the base member at opposite sides of the upper end portion of the slot and extending in crossed relation and intersecting at the slot as a cutting tool is drawn downwardly and outwardly through the slot. Separate counterweights are connected to the upper end portions of each of the sharpening elements to resist their downward pivoting movement as the cutting tool is so drawn through the slot. Separate eccentrically mounted cams are disposed between each cutting tool and its axis of pivot to adjustably control the extent of swinging movement of each of the sharpening elements in both directions.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: August 12, 1997
    Inventor: John Juranitch
  • Patent number: 5478272
    Abstract: An apparatus for sharpening a blade is provided having a base member with a slot for receiving and guiding a blade to be sharpened, first and second apertures disposed on either side of the slot, first and second resilient biasing members disposed within each of the first and second apertures such that each of the biasing members is substantially entirely enclosed within the base member and protected from debris and contaminants. Sharpening members are connected to the biasing members and are rotatable about a central axis of each respective aperture between a first and second position, which rotation is limited by a stop member as the blade passes from one end of the slot toward the other.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: December 26, 1995
    Assignee: Cozzini, Inc.
    Inventors: Ivo Cozzini, Tom Spino, Johnathan Lopez
  • Patent number: 5440953
    Abstract: A knife sharpening device includes a vertically-oriented base having a vertically-oriented slot. Mounted on the base, on one side of the slot are two crossed sharpening members of a rod-like configuration. A lower end of each of the crossed sharpening members is anchored in a horizontally-extending pivot pin with a terminal end of each of the sharpening members extending beyond the pivot pins and engaging a horizontally-extending stop pin. The pivot pins are rotatably mounted in the base and extend through the base. A pivot wheel is mounted concentrically on a free end of the pivot pins on an opposite side of the base from the sharpening members. Two radially-extending set screws extend through the pivot wheels and engage a flat surface of the pivot pin to hold the pivot wheels on the pivot pins. Extending between the two set screws, threadingly mounted in the two pivot wheels, is a tensioning spring.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: August 15, 1995
    Assignee: Tru Hone Corporation
    Inventors: Fred R. Gangelhoff, James H. Gangelhoff, Joel T. Gangelhoff
  • Patent number: 5389032
    Abstract: The present invention relates to an abrasive article for abrading material from a workpiece. In one embodiment, the abrasive article includes a back-up pad having first and second major surfaces. The first major surface includes a shaft adapted to connect the abrasive article to an abrading apparatus for movement relative thereto. Adjoining the second major surface are first and second resilient support portions, to which are attached first and second abrading members, respectively. When an operator applies a first force to the abrading apparatus, the first abrasive surface contacts and abrades the workpiece. When the operator applies a second force that is greater than the first force, both the first and the second abrasive surfaces contact and abrade the workpiece.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: February 14, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Kris A. Beardsley