US20090004956A1 - Honing jig - Google Patents

Honing jig Download PDF

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Publication number
US20090004956A1
US20090004956A1 US11/956,823 US95682307A US2009004956A1 US 20090004956 A1 US20090004956 A1 US 20090004956A1 US 95682307 A US95682307 A US 95682307A US 2009004956 A1 US2009004956 A1 US 2009004956A1
Authority
US
United States
Prior art keywords
base
fixture
blade
angle
set forth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/956,823
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English (en)
Inventor
Darrin E. Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jessem Tool Co USA
Original Assignee
Jessem Tool Co USA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jessem Tool Co USA filed Critical Jessem Tool Co USA
Assigned to JESSEM TOOL COMPANY reassignment JESSEM TOOL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SMITH, DARRIN E.
Publication of US20090004956A1 publication Critical patent/US20090004956A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/38—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades for planing wood, e.g. cutter blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/066—Work supports, e.g. adjustable steadies adapted for supporting work in the form of tools, e.g. drills

Definitions

  • This invention relates to honing jigs and more particularly to a jig for sharpening the cutting edge of a blade in a tool such as a plane and a chisel.
  • the jig has provision for adjustment of the inclination of the blade according to the angle of its cutting surface.
  • the jig has provision for honing a secondary bevel on the cutting edge.
  • the conventional method of sharpening a blade of a chisel or a plane is to clamp the blade to a honing tool having a roller and to push the tool across an abrasive surface such as that of a whetstone.
  • Such a method has a number of shortcomings, one of which is that skill is required to operate the tool properly. Many carpenters and particularly hobbyists lack such skill and do more harm that good to a blade when they attempt to sharpen it by this method.
  • Anther shortcoming of the method is that the tool tends to run off the whetstone as it is pushed back and forth. Unless particular care is taken to prevent this, the blade can be damaged as it is being pushed. Furthermore, the operator may injure himself since his hand may be struck by the blade if his hand is in its path.
  • a honing jig for use in sharpening an object generally comprises a base adapted to support an abrasive substance thereon and a carriage assembly constructed for releasably mounting the object to be sharpened.
  • the base and carriage assembly are mounted with respect to each other for obtaining relative translational movement of the object mounted on the carriage assembly and the abrasive substance on the base so that a portion of the object engaging the abrasive substance is sharpened.
  • a honing jig for use in sharpening a blade generally comprises a base adapted to support a whetstone thereon, and guide rails pivotally mounted on the base at one end of each guide rail.
  • a carriage assembly comprises a slider and a fixture pivotally mounted on the slider.
  • the slider is mounted on the guide rails for movement along the guide rails with respect to the base.
  • the fixture is adapted to mount the blade thereon.
  • the slider and fixture include alignable apertures, where at least some of the apertures are located in positions so that the fixture must assume different angles with respect to the slider to align different apertures.
  • a pin receivable in selected aligned apertures can thereby fix the angular orientation of the fixture relative to the slider.
  • a stepped pedestal is adapted to support the guide rails in a first position in which the guide rail makes a first angle with the base, and in a second position in which the guide rail makes a second angle with the base different from the first angle.
  • a method of honing a blade generally comprises pivotally moving a blade fixture at a selected angle for the blade.
  • the blade fixture is secured at the selected angle mounting the blade in the fixture at the selected angle, and then the securement of the fixture is released.
  • the blade is moved into engagement with an abrasive substance, and the blade is translated across the abrasive substance to hone the blade.
  • FIG. 1 is a perspective view of the honing jig
  • FIG. 2 is a fragmentary elevation of a carriage and a swiveling clamp of the jig together with the upper portion of a blade;
  • FIG. 3 is a plan view of a portion of the swiveling clamp
  • FIG. 4 is an exploded perspective view of the components which are illustrated in FIG. 2 and which make up a primary adjusting apparatus;
  • FIG. 5 is a fragmentary, longitudinal section of the honing jig with parts of a clamp of the swiveling clamp broken away to show internal details;
  • FIG. 6 is a fragmentary, longitudinal section similar to FIG. 5 , but illustrating movement of the blade over the whetstone;
  • FIG. 7 is a fragmentary, exploded perspective view of the components which make up a secondary adjustment apparatus
  • FIG. 8 is an elevation of the honing jig showing a secondary adjustment apparatus in one position
  • FIG. 9 is the elevation of FIG. 8 , but showing the secondary adjustment apparatus in another, raised position;
  • FIG. 10 is an enlarged, fragmentary elevation of the honing jig and blade, with the blade in a position corresponding to FIG. 8 ;
  • FIG. 11 is the enlarged, fragmentary elevation of FIG. 10 , but showing the blade in the position corresponding to FIG. 9 .
  • the honing jig has a base 10 on which is mounted, at one end, two pairs of spaced supporting blocks 12 a,b .
  • An end member 14 has opposing trunnions 16 which extend into bores in each supporting block so that each end member is pivotal with respect to the base.
  • An end of one of a pair of spaced guide rods 18 a,b is accommodated in each end member.
  • the opposite ends of the guide rods are mounted to a dual supporting block 20 , described more fully below.
  • a sliding tube 22 is mounted for sliding to each guide rod 18 a , 18 b .
  • a carriage, indicated generally at 24 includes a transverse or adjustment plate 26 which has a passageway 28 at opposite sides for receipt of the sliding tubes.
  • the sliding tubes 22 are pressure fitted into the passageways 28 or otherwise suitably connected so that the carriage 24 is moveable or slidable on the guide rods 18 a , 18 b .
  • the carriage has a means for removably fastening a blade 32 thereto in the form of a swiveling clamp 30 which swivels relative to the transverse plate.
  • a blade 32 to be sharpened is held firmly by the clamp so that its lower edge 32 a is in contact with an abrasive substance such as a whetstone 34 .
  • the swiveling clamp 30 is sometimes referred to as the “primary angle-adjusting apparatus” of the jig.
  • a pair of collars 36 acts as stop points for the carriage 24 .
  • Set screws 38 permit the position of the collars to be moved.
  • the collars 36 are mounted on one of the guide rods 18 b , but may be mounted on different rods, or located off the rods.
  • the whetstone is seated on base 10 and is located on the base by stop members 40 a,b at each of its ends.
  • Stop member 40 a is immovably fixed to the base while stop member 40 b is moveable in a T-slot 42 in the base 10 by loosening thumbscrew 44 so that the spacing between the two stop members can be adjusted to accommodated whetstones of different lengths.
  • Whetstones of different lengths can be commonly encountered in the market, and the honing jig of the illustrated embodiment is capable of accommodating them.
  • the swiveling clamp 30 is composed of lower and upper jaws 46 , 48 respectively.
  • the jaws are interconnected by a pair of threaded studs 50 which are fixed to the lower jaw 46 and pass through openings in the upper jaw 48 .
  • Knobs 52 are threadably connected to the studs 50 and loosening of the knobs allows the jaws 46 , 48 to be manually separated to receive blade 32 .
  • tightening of the knobs 52 causes the jaws 46 , 48 to immobilize the blade 32 in position for sharpening.
  • Extending beneath the lower jaw is a block 54 .
  • the block is one of the components of the primary angle-adjusting apparatus and is sometimes referred to below as the “angle-adjusting block”.
  • the block 54 has trunnions 55 which extend outwardly from its oppositely facing side walls and into openings in spaced apart ears 58 which extend outwardly from a rear wall 26 a of the transverse plate.
  • the front wall 54 a of the angle-adjusting block 54 closest to the adjustment plate 26 curves anyway from the adjustment plate so that the block is free to pivot without interference by the adjustment plate.
  • the position of the block 54 accordingly governs the inclination of the jaws 46 , 48 and the inclination of the blade 32 .
  • a number of apertures 56 extend through the adjustment plate 26 .
  • the apertures 56 are spaced apart from each other and extend from the front wall 26 b through the rear wall 26 a .
  • a series of apertures 60 extend inward from the curved area of the block 54 and are arranged, as illustrated in FIG. 3 , such that the first aperture 60 a is highest and each aperture next in succession is lower than the immediately preceding aperture, the last aperture 60 b being the lowest.
  • Each aperture 60 formed in the block 54 aligns with a corresponding aperture 56 in the adjustment plate 26 .
  • the first aperture 60 a in the block 54 aligns with the first aperture 56 a in the plate 26
  • the second aperture 60 c in the block aligns with the second aperture 56 b and so on.
  • the block since the apertures 56 in the plate 26 are arranged on a horizontal line whereas the apertures 60 in the block 54 are on a line at an angle with the horizontal, the block must be pivoted to bring each of the pairs of apertures into alignment.
  • the positioning of adjacent apertures 60 may correspond to roughly a 5° change in angulation of the blade 32 held by the jaws 46 , 48 .
  • the first aperture 56 a in the plate 26 is in alignment with the first aperture 60 a in the block 54 .
  • the block In order to bring the second aperture 56 b in the plate 26 into alignment with the second aperture 60 c in the block 54 , the block must be pivoted clockwise. It will be understood that only one aperture 56 in the adjustment plate 26 will align with one aperture 60 in the angle-adjusting block 54 at any given angle of the block. The next aperture in the plate will only align with the next aperture in the block when the block is be pivoted sufficiently and as the block is pivoted, the first apertures will move out of an alignment.
  • each aperture 56 in the adjustment plate 26 will align with only one aperture 60 in the angle-adjusting block 54 at any one time and when an aperture in one is in alignment with an aperture in the other, no other apertures will be in alignment. Only by pivoting the block will other the apertures 56 , 60 in turn be brought into alignment. Pivoting of course causes jaws 46 , 48 to conjointly pivot with resulting pivoting of the blade 32 so that the inclination of the blade relative to the whetstone 34 will vary according to which apertures 56 , 60 in the plate 26 and block 54 are in alignment.
  • the shank of a locating pin 64 is receivable in any one of the pairs of apertures 56 , 60 in alignment. The pin 64 acts to rotationally lock the block 54 relative to the plate 26 . Such immobilization causes a like immobilization of the blade 32 .
  • angle 66 is a measure of the inclination of blade 32 relative to the upper surface of the whetstone 34 . As indicated previously, that angle is adjustable according to which apertures 56 , 60 in the plate 26 and block 54 are in alignment.
  • the locating pin 64 serves to immobilize the block 54 and when the block is so immobilized, it is at a so-called “stop point”.
  • the number of stop points will of course equal the number of apertures 60 in the block 54 . Movement of the block 50 from one stop point to the next causes an incremental change in the inclination of the blade 32 .
  • the number of apertures 56 , 60 may be other than illustrated within the scope of the present invention.
  • the operation of the locating pin 64 is as follows: first an operator immobilizes the swiveling clamp 30 relative to the adjustment plate 26 at a predetermined angle by inserting the pin through selected aligned apertures 56 , 60 . He then positions the cutting edge of a blade 32 to be sharpened on the whetstone 34 and secures the blade to the swiveling clamp 30 . He then removes the pin 64 to allow him to force the cutting edge into firm and solid contact with the whetstone so that the whetstone can sharpen the edge. the angle of the blade 32 relative to the whetstone set by the pin 64 is not materially changed. The operator can then move the blade 32 back and forth on the whetstone in order to sharpen the cutting edge. Friction between the cutting edge 32 a and the whetstone 34 will hold the blade at the same angle.
  • the location of the apertures 60 in the block 54 will determine the angle of the blade 32 at each stop point. It is preferred that the angle at each stop point be an integer and the angle between successive stop points be always the same. For example the angle at the stop points can be 15, 20, 25, 30 degrees and so on. However, other angles may be used without departing from the scope of the present invention.
  • the carriage 24 has moved to the right from the position illustrated in FIG. 5 and the lower wall of the blade 32 has moved along the upper surface of the whetstone 34 .
  • the primary angle-adjusting apparatus is the swiveling clamp 30 as previously indicated.
  • the secondary angle-adjusting means is the dual supporting block 20 in conjunction with a pedestal 68 , described below.
  • block 20 is in one piece and both guide rods 18 a , 18 b are attached to it.
  • the block 20 is seated on pedestal 68 which is slidable on base 10 .
  • a handle 70 is provided for facilitating the sliding.
  • the pedestal 68 has a pair of slots 72 for receipt of threaded studs 74 which are fixed to the base 10 and project upwardly therefrom.
  • the pedestal 68 has a stepped upper wall, the inner step 68 a being lower than the outer 68 b.
  • the dual supporting block 20 has a pair of apertures 76 for receipt of studs 74 .
  • Knobs 78 are threadably received on the upper ends of the studs 74 . Tightening of the knobs 78 immobilizes both the supporting block 20 and the pedestal 68 . Loosening of the knobs 78 allows the supporting block 20 to be raised so that the pedestal 68 is free to slide forward or backward with the studs 74 moving in the slots 72 .
  • the pedestal 68 can be slid from the position illustrated in FIG. 8 in which the supporting block 20 is resting on the lower step 68 a to the position illustrated in FIG. 9 in which the supporting block is resting on the upper step 68 b.
  • the ends of the guide rods 18 a , 18 b opposite the dual supporting block 20 are pivotally connected by end members 14 to supporting blocks 12 a,b as previously indicated. Sliding of the pedestal 68 from the position illustrated in FIG. 8 to the position illustrated in FIG. 9 causes the dual supporting block 20 when again supported on the pedestal 68 to be disposed higher with resulting tilting of the guide rods 18 a , 18 b and raising of the swiveling clamp 30 . As the swiveling clamp rises, the blade 32 tilts with respect to whetstone.
  • blade 32 is shown as it would appear when the pedestal is in the rear position illustrated in FIG. 8 .
  • FIG. 11 shows the blade as it would appear when the pedestal is in the forward position illustrated in FIG. 9 .
  • the secondary angle-adjusting means i.e. the dual supporting block 20 and pedestal 68 permits fine adjustment of the inclination of the blade 32 (e.g., on the order of about 10 in the illustrated embodiment) from the inclination of the blade at each said stop point of the swiveling clamp 30 .
  • its forward edge 32 b is below its rear edge 32 c .
  • a secondary bevel would be desirable, for example, when the blade was being used with hard woods and therefore required relatively frequent resharpening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US11/956,823 2006-12-15 2007-12-14 Honing jig Abandoned US20090004956A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,571,693 2006-12-15
CA002571693A CA2571693A1 (fr) 2006-12-15 2006-12-15 Etau pour affuter

Publications (1)

Publication Number Publication Date
US20090004956A1 true US20090004956A1 (en) 2009-01-01

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US11/956,823 Abandoned US20090004956A1 (en) 2006-12-15 2007-12-14 Honing jig

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US (1) US20090004956A1 (fr)
CA (1) CA2571693A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090088053A1 (en) * 2007-09-27 2009-04-02 Woodpeckers, Inc. Method and apparatus for sharpening a tool blade
US20100273403A1 (en) * 2009-04-23 2010-10-28 Robert Moon Contour Guide for Ice Skate Sharpener
US20110053480A1 (en) * 2009-09-01 2011-03-03 Ele Grigsby Scraper and sharpening tool combination and sharpening method
US20110201261A1 (en) * 2009-09-01 2011-08-18 Ele Grigsby Scraper Accommodating Different Sizes of Blades
CN102689217A (zh) * 2012-05-31 2012-09-26 北京航空航天大学 一种用于双轴类微变形叶片基准修正的装置
CN104416435A (zh) * 2013-09-09 2015-03-18 珠海格力电器股份有限公司 一种电极打磨装置
US20150174723A1 (en) * 2013-12-23 2015-06-25 David G. Powell Universal sharpening jig for a cutting blade
US9469009B1 (en) * 2016-02-05 2016-10-18 Andrzej Kazimierczuk Adjustable tool holding surface grinder fixture
CN109382710A (zh) * 2017-08-11 2019-02-26 洪福雄 自动磨刀装置
US10759017B2 (en) * 2018-03-23 2020-09-01 David G. Powell Glideway crowning plate and method thereof for creating a crown on a cutting edge of a cutting blade with a sharpening jig
US20220314387A1 (en) * 2021-03-30 2022-10-06 Choon's Kitchenware, LLC Blade sharpening assembly
USD990275S1 (en) * 2021-03-30 2023-06-27 Choon's Kitchenware, LLC Blade sharpening device
USD990274S1 (en) * 2021-03-30 2023-06-27 Choon's Kitchenware, LLC Blade sharpening device
US20230321786A1 (en) * 2018-07-18 2023-10-12 John L. Alberti Grinder tool with blind mounting of a disc

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644279A (en) * 1950-08-24 1953-07-07 Stankovich George Peter Mounting apparatus for sharpening tools, blades, and the like
US2753666A (en) * 1952-01-18 1956-07-10 Elmer C Sasse Scissors sharpener
US3054229A (en) * 1960-11-15 1962-09-18 Reliable Packing Company Adjustable machines for grinding knives and the like
US3733751A (en) * 1970-05-06 1973-05-22 Temtool Pty Ltd Method of and apparatus for sharpening small hand tools
US3879899A (en) * 1973-03-28 1975-04-29 William J Ribar Scissors sharpener
US4217735A (en) * 1978-11-02 1980-08-19 Mcgeoch James Tool sharpening device
US4669227A (en) * 1985-06-24 1987-06-02 Treppner Bernaht C Angle plate apparatus with precisely adjustable workpiece holder
US5157870A (en) * 1991-02-08 1992-10-27 Pike Arthur E Precision clamp scissors sharpening system
US5218787A (en) * 1991-09-27 1993-06-15 Rice Gary F Apparatus for sharpening implements
US5295328A (en) * 1990-11-26 1994-03-22 Roswitha Quetin Device for the sharpening, grinding and polishing of dental, parodental and/or surgical instruments
US5582542A (en) * 1994-08-08 1996-12-10 Stein; Sanford Apparatus and method for sharpening a cutting tool
US5938511A (en) * 1997-11-21 1999-08-17 Patterson; James D. Grinding guide assembly
US6926596B1 (en) * 2004-02-05 2005-08-09 Pacific Rack & Machine Tool sharpening apparatus
US7056195B2 (en) * 2004-09-16 2006-06-06 Geoffrey John Hamilton Evans Apparatus and method for sharpening tool blades
US7112124B1 (en) * 2003-07-28 2006-09-26 Donald Naples Rotary blade sharpener
US7281969B2 (en) * 2005-05-11 2007-10-16 Donald Naples Tool sharpening and compound honing jig

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644279A (en) * 1950-08-24 1953-07-07 Stankovich George Peter Mounting apparatus for sharpening tools, blades, and the like
US2753666A (en) * 1952-01-18 1956-07-10 Elmer C Sasse Scissors sharpener
US3054229A (en) * 1960-11-15 1962-09-18 Reliable Packing Company Adjustable machines for grinding knives and the like
US3733751A (en) * 1970-05-06 1973-05-22 Temtool Pty Ltd Method of and apparatus for sharpening small hand tools
US3879899A (en) * 1973-03-28 1975-04-29 William J Ribar Scissors sharpener
US4217735A (en) * 1978-11-02 1980-08-19 Mcgeoch James Tool sharpening device
US4669227A (en) * 1985-06-24 1987-06-02 Treppner Bernaht C Angle plate apparatus with precisely adjustable workpiece holder
US5295328A (en) * 1990-11-26 1994-03-22 Roswitha Quetin Device for the sharpening, grinding and polishing of dental, parodental and/or surgical instruments
US5157870A (en) * 1991-02-08 1992-10-27 Pike Arthur E Precision clamp scissors sharpening system
US5218787A (en) * 1991-09-27 1993-06-15 Rice Gary F Apparatus for sharpening implements
US5582542A (en) * 1994-08-08 1996-12-10 Stein; Sanford Apparatus and method for sharpening a cutting tool
US5938511A (en) * 1997-11-21 1999-08-17 Patterson; James D. Grinding guide assembly
US7112124B1 (en) * 2003-07-28 2006-09-26 Donald Naples Rotary blade sharpener
US6926596B1 (en) * 2004-02-05 2005-08-09 Pacific Rack & Machine Tool sharpening apparatus
US7056195B2 (en) * 2004-09-16 2006-06-06 Geoffrey John Hamilton Evans Apparatus and method for sharpening tool blades
US7281969B2 (en) * 2005-05-11 2007-10-16 Donald Naples Tool sharpening and compound honing jig

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090088053A1 (en) * 2007-09-27 2009-04-02 Woodpeckers, Inc. Method and apparatus for sharpening a tool blade
US8197304B2 (en) * 2007-09-27 2012-06-12 Woodpeckers, Inc. Method and apparatus for sharpening a tool blade
US20100273403A1 (en) * 2009-04-23 2010-10-28 Robert Moon Contour Guide for Ice Skate Sharpener
US8430723B2 (en) * 2009-04-23 2013-04-30 Guspro Inc. Contour guide for ice skate sharpener
US20110053480A1 (en) * 2009-09-01 2011-03-03 Ele Grigsby Scraper and sharpening tool combination and sharpening method
US20110201261A1 (en) * 2009-09-01 2011-08-18 Ele Grigsby Scraper Accommodating Different Sizes of Blades
US8523638B2 (en) * 2009-09-01 2013-09-03 Ele Grigsby Edge tool and sharpener in combination
CN102689217A (zh) * 2012-05-31 2012-09-26 北京航空航天大学 一种用于双轴类微变形叶片基准修正的装置
CN104416435A (zh) * 2013-09-09 2015-03-18 珠海格力电器股份有限公司 一种电极打磨装置
US20150174723A1 (en) * 2013-12-23 2015-06-25 David G. Powell Universal sharpening jig for a cutting blade
US9221144B2 (en) * 2013-12-23 2015-12-29 David G. Powell Universal sharpening jig for a cutting blade
US9469009B1 (en) * 2016-02-05 2016-10-18 Andrzej Kazimierczuk Adjustable tool holding surface grinder fixture
CN109382710A (zh) * 2017-08-11 2019-02-26 洪福雄 自动磨刀装置
US10759017B2 (en) * 2018-03-23 2020-09-01 David G. Powell Glideway crowning plate and method thereof for creating a crown on a cutting edge of a cutting blade with a sharpening jig
US20230321786A1 (en) * 2018-07-18 2023-10-12 John L. Alberti Grinder tool with blind mounting of a disc
US20220314387A1 (en) * 2021-03-30 2022-10-06 Choon's Kitchenware, LLC Blade sharpening assembly
USD990275S1 (en) * 2021-03-30 2023-06-27 Choon's Kitchenware, LLC Blade sharpening device
USD990274S1 (en) * 2021-03-30 2023-06-27 Choon's Kitchenware, LLC Blade sharpening device

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Date Code Title Description
AS Assignment

Owner name: JESSEM TOOL COMPANY, TENNESSEE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SMITH, DARRIN E.;REEL/FRAME:020642/0441

Effective date: 20080305

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION