Patents Assigned to Tormek AB
  • Patent number: 11833639
    Abstract: An arrangement (50) for grinding edged tools, such as knives, said arrangement (50) configured to be part of a grinding machine (100), comprising a conical grinding wheel (110) arranged to be rotated in a rotational direction (R) and having an envelope grinding surface (111) for an edged tool (10), and a grinding jig (120) for holding an edged tool (10), wherein the grinding jig (120), in use, is arranged such that the edged tool (10) extends over the envelope grinding surface (111) perpendicular to the rotational direction (R).
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: December 5, 2023
    Assignee: Tormek AB
    Inventor: Håkan Persson
  • Patent number: 11628536
    Abstract: An arrangement (50) for grinding edged tools, such as knives, said arrangement (50) configured to be part of a grinding machine (100), comprising: a conical grinding wheel (110) arranged to be rotated in a rotational direction (R) and having an envelope grinding surface (111) for an edged tool (10), and; a grinding jig (120) for holding an edged tool (10), wherein the grinding jig (120), in use, is arranged such that the edged tool (10) extends over the envelope grinding surface (111) perpendicular to the rotational direction (R) and wherein the grinding wheel (110) is made of metal with a super-abrasive coating.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: April 18, 2023
    Assignee: TORMEK AB
    Inventor: Håkan Persson
  • Patent number: 11517998
    Abstract: A grinding jig for holding a blade tool having an edge in a grinding machine. The grinding jig may have a first and a second clamp half arranged to hold between them at least a portion of a blade tool. An elongate support portion may support the grinding jig onto a support bar of a grinding machine. The elongate support portion may comprise a front end abutment surface and a rear end abutment surface. The front and rear end abutment surfaces may be spaced to receive a portion of a support bar such that the grinding jig may be moved back and forth relative to the support bar in a direction parallel with its longitudinal center axis.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: December 6, 2022
    Assignee: TORMEK AB
    Inventor: Håkan Persson
  • Patent number: 11491607
    Abstract: The present disclosure presents a grinding apparatus for sharpening an edge tool. The grinding apparatus may comprise a grinding apparatus casing; a cylindrical grindstone and a support element. The cylindrical grindstone is removably attachable to the grinding apparatus casing. The support element is also removably attachable to the grinding apparatus casing for supporting the edge tool to be sharpened during the grinding operation. The support element includes an elongated member, which may be embodied as a cylindrical support bar. The cylindrical support bar may be configured to extend in a direction which is perpendicular to the rotation axis of the cylindrical grindstone, during operation, in such way that a grinding operation is enabled where the edge tool to be sharpened can be sharpened by means of the side surface facing outwardly from the grinding apparatus casing during the grinding operation.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: November 8, 2022
    Assignee: TORMEK AB
    Inventor: Håkan Persson
  • Patent number: 10987777
    Abstract: A grinding liquid trough arrangement for a grinding machine having a grindstone, wherein said grinding liquid trough arrangement comprises: a trough for grinding liquid formed by a trough wall, wherein the trough is configured to be arranged at a grinding machine having a grindstone such that the trough encloses a portion of a grindstone, wherein, the trough wall comprises at least one metal element which is attractable to magnets, and that, the grinding liquid trough arrangement comprises at least one magnetic element which is configured to be detachable attached to an external side of the trough wall by means of magnetic attraction between the magnetic element and the metal element.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: April 27, 2021
    Assignee: TORMEK AB
    Inventor: Håkan Persson
  • Publication number: 20200316748
    Abstract: A grinding jig (100) for holding a blade tool (200) having an edge (210) in a grinding machine (300), comprising: a first and a second clamp half (110, 120) arranged to hold between them at least a portion of a blade tool, and; an elongate support portion (160) for supporting the grinding jig (100) onto a support bar (350) of a grinding machine (300), wherein; the elongate support portion (160) comprises a front end abutment surface (170) and a rear end abutment surface (180) the front and rear end abutment surfaces (170, 180) are spaced to receive a portion of a support bar (350) of and such that the grinding jig (100) may be moved back and forth relative the support bar (350), in direction parallel with its longitudinal center axis (Y).
    Type: Application
    Filed: April 3, 2020
    Publication date: October 8, 2020
    Applicant: Tormek AB
    Inventor: Håkan PERSSON
  • Publication number: 20200316749
    Abstract: An arrangement (50) for grinding edged tools, such as knives, said arrangement (50) configured to be part of a grinding machine (100), comprising: a conical grinding wheel (110) arranged to be rotated in a rotational direction (R) and having an envelope grinding surface (111) for an edged tool (10), and; a grinding jig (120) for holding an edged tool (10), wherein the grinding jig (120), in use, is arranged such that the edged tool (10) extends over the envelope grinding surface (111) perpendicular to the rotational direction (R) and wherein the grinding wheel (110) is made of metal with a super-abrasive coating.
    Type: Application
    Filed: April 3, 2020
    Publication date: October 8, 2020
    Applicant: Tormek AB
    Inventor: Håkan Persson
  • Patent number: 10272534
    Abstract: A grinding machine comprising a housing having a base for supporting the grinding machine, a shaft for holding a grindstone, a motor for rotating the shaft and a trough holder for holding a trough for grinding liquid, the through holder being arranged below the shaft, wherein the trough holder is movable in vertical direction between the base of the housing and the shaft for holding a grindstone and that the grinding machine comprises a lifting/lowering arrangement for moving the trough holder in said vertical direction.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: April 30, 2019
    Assignee: Tormek AB
    Inventor: Håkan Persson
  • Patent number: 10150201
    Abstract: The present invention relates to the field of grinding machines. In one of its embodiments, this disclosure presents a grinding machine casing (30) for a grinding machine (100). The grinding machine casing (30) comprises a first casing part (10), which is mounted to a second casing part (20). The first casing part (10) is provided with a set of brackets. Each bracket of a set of brackets comprises a hole which is adapted to receive a cylindrical end of a support bar (60) such that the support bar (60) can be releasably connected to the first casing part (10). Still further, one bracket in each set of brackets comprises a hole, the cross-section of which is non-circular.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: December 11, 2018
    Assignee: Tormek AB
    Inventor: Håkan Persson
  • Patent number: 9950401
    Abstract: A grinding machine has a rotatable grindstone (1) and a support (12), which is generally parallel to an axis of the grindstone. Jig means (1-8) are provided for bringing a knife blade (15) to be sharpened into controlled engagement with the grindstone (1). A jig arm (1) is provided with attachment means (2, 3) for its fixed attachment to the support (12) in a proper position for the sharpening of the knife blade (15) and—at a distance from the attachment means—with resilient holding means (1?) for the knife blade (15).
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: April 24, 2018
    Assignee: Tormek AB
    Inventor: Håkan Persson
  • Patent number: 9789583
    Abstract: A grinding jig for holding an edged tool in a grinding machine. The grinding jig comprises a base having a plane support surface for supporting a section of the face of an edged tool. The grinding jig further comprises a clamping means. The clamping means is arranged to clamp a section of the face of an edged tool against the flat support surface. A first and a second support leg extend from opposite ends of the base. Each support leg comprises an opening adapted to slidably and rotationally receive a grinding jig support bar of a grinding machine. In embodiments described herein one support leg is pivotally attached to the base around an axis parallel with the extension of the plane support surface. The grinding jig further comprises a first adjustable stop means for adjustably limiting the pivotal movement of the support leg in a first direction. The grinding jig further comprises a second adjustable stop means for adjustably limiting the pivotal movement of the support leg in a second direction.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 17, 2017
    Assignee: TORMEK AB
    Inventor: Håkan Persson
  • Patent number: 9186767
    Abstract: A knife jig assembly (1, 3) for use in sharpening a knife (8) in a grinding machine (16) comprises a conventional knife jig (1) with a clamp (2) for clamping and holding an object. It also comprises a knife holder (3) with means (5, 10) for holding the knife (8) and with a flat rod (4) to be clamped by the clamp (2) of the knife jig (1).
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 17, 2015
    Assignee: Tormek AB
    Inventor: Hakan Persson
  • Publication number: 20130295825
    Abstract: A knife jig assembly (1, 3) for use in sharpening a knife (8) in a grinding machine (16) comprises a conventional knife jig (1) with a clamp (2) for clamping and holding an object. It also comprises a knife holder (3) with means (5, 10) for holding the knife (8) and with a flat rod (4) to be clamped by the clamp (2) of the knife jig (1).
    Type: Application
    Filed: March 15, 2013
    Publication date: November 7, 2013
    Applicant: Tormek AB
    Inventor: Hakan PERSSON
  • Patent number: 6623340
    Abstract: A grinding jig (5) is to be attached on an edge tool (4) to be ground on a rotating grindstone (2) in a grinding machine (1), having a support means (3) in the vicinity of the grindstone. The jig is split by having a base portion (6) and two parallel open yokes (8, 9) extending therefrom. A screw (7) for clamping the tool (4) against the bottoms of the yokes is provided in the base portion between the two yokes.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: September 23, 2003
    Assignee: Tormek AB
    Inventor: Torgny Jansson
  • Publication number: 20020197942
    Abstract: A grinding jig (5) is to be attached on an edge tool (4) to be ground on a rotating grindstone (2) in a grinding machine (1), having a support means (3) in the vicinity of the grindstone. The jig is split by having a base portion (6) and two parallel open yokes (8, 9) extending therefrom. A screw (7) for clamping the tool (4) against the bottoms of the yokes is provided in the base portion between the two yokes.
    Type: Application
    Filed: May 29, 2002
    Publication date: December 26, 2002
    Applicant: TORMEK AB
    Inventor: Torgny Jansson
  • Patent number: 6447384
    Abstract: Jig for grinding sharp-edged tools. The jig consists of a housing in the form of a casing designed with a passage running through it whose at least one end is flat, plus a seat, also in the form of a casing designed with a passage running through it, located in the passage of the housing and lockable in this housing in an inclined position in relation to the passage in the housing, whereby the seat is provided with a clamping device (4) for firmly holding a tool that is to be ground so that it extends through the passage of the seat, and that the seat has such a length that one end of it extends out beyond the housing at the flat end of the housing.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: September 10, 2002
    Assignee: Tormek AB
    Inventor: Torgny Jansson
  • Patent number: 6393712
    Abstract: A jig for grinding gouges in cooperation with a grindstone or the like. The jig includes a support, which can be fixed positionally in relation to the grindstone. The support includes a supportive part that extends generally parallel to the grindstone axle. A bearing sleeve is mounted on the supportive part for pivotal movement in a plane generally perpendicular to the grindstone axle. A rod is included for displacement in the plane of the bearing sleeve. The rod includes a pivotal locking stirrup for locking the gouge to the jig.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: May 28, 2002
    Assignee: Tormek AB
    Inventor: Torgny Jansson
  • Patent number: 6189225
    Abstract: Angle gauge for grinding the lip of sharp-edged tools whereby an adjustable first device is arranged on the frame at one end of the frame that during measurement is intended to be supported against the periphery of the grinding wheel and that through adjustment varies the distance between the said one end and the periphery of the grinding wheel, and an adjustable and rotatable second device is arranged at the other end of the frame and provided with a flat edge that extends towards the periphery of the grinding wheel and that during measurement abuts with periphery of the grinding wheel with the corner edge that faces the first device in such a manner that the flat edge forms an angle with the periphery of the grinding wheel where this angle defines the cutting angle.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: February 20, 2001
    Assignee: Tormek AB
    Inventor: Torgny Jansson
  • Patent number: 5816735
    Abstract: The present invention teaches a female part that can locked in selected positions on a round rod. The female part includes a hollow passageway into which a locking screw can be screwed in a generally radial direction into engagement with the rod. When seen in a cross section, the passageway includes two flat surfaces which slope towards one another symmetrically in relation to a diametrical plane. The angle defined by the surfaces with the plane lies between 2.5' and 15.0'. The locking screw enters the passageway in the wider part between the surfaces.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: October 6, 1998
    Assignee: Tormek AB
    Inventor: Torgny Jansson
  • Patent number: RE46941
    Abstract: A device or tool setter has the purpose of setting the position of a support bar, adjustably connected to a grinding machine, in relation to a rotatable grindstone of the machine for obtaining a desired edge angle of a tool supported for grinding by the support bar. The device is provided with discs for defining two contact points with the grindstone and a hole for connection to the support bar.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: July 10, 2018
    Assignee: Tormek AB
    Inventor: Torgny Jansson