EP2000255A1 - Schneidwerkzeug zum Schleifen - Google Patents

Schneidwerkzeug zum Schleifen Download PDF

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Publication number
EP2000255A1
EP2000255A1 EP07253513A EP07253513A EP2000255A1 EP 2000255 A1 EP2000255 A1 EP 2000255A1 EP 07253513 A EP07253513 A EP 07253513A EP 07253513 A EP07253513 A EP 07253513A EP 2000255 A1 EP2000255 A1 EP 2000255A1
Authority
EP
European Patent Office
Prior art keywords
blade
cutting
tool holder
connecting portion
pinching
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.)
Granted
Application number
EP07253513A
Other languages
English (en)
French (fr)
Other versions
EP2000255B1 (de
Inventor
Mino c/o Master Cutlery Corporation Tsuchida
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.)
Master Cutlery Corp
Original Assignee
Master Cutlery Corp
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 Master Cutlery Corp filed Critical Master Cutlery Corp
Publication of EP2000255A1 publication Critical patent/EP2000255A1/de
Application granted granted Critical
Publication of EP2000255B1 publication Critical patent/EP2000255B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B24D15/08—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of knives; of razors
    • 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
    • B24B3/54—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of hand or table knives

Definitions

  • This invention relates to an aid for sharpening a cutting tool, by which sharpness of the cutting tool can be maintained.
  • a kitchen knife has an edge provided with an appropriate angle, which is important for the capability of the kitchen knife and different in each food culture area where it is used.
  • kitchen knives of a type used in Western civilization typically have an edge with an angle approximately in a range from 30 to 40 degrees. This is because they are designed to cut a material, such as meat, with their edge pressed down against the material to sever it and thus require relatively great force to be applied to the kitchen knives and such a relatively greater angle is expected to avoid a nick in the edge.
  • the sharpness of a kitchen knife depends upon the angle of the edge of its blade as determined with consideration given to the method of cutting a material which is supposed to be applied to the kitchen knife.
  • the blade of the knife When the edge of a kitchen knife becomes nicked or blunted, the blade of the knife is ground on a whetstone, with the edge of the blade kept in contact with the whetstone at a predetermined angle approximately in the range from 10 to 15 degrees (or from 30 to 40 degrees) between the blade and the whetstone, so that the operation of grinding is performed repeatedly to make the edge of the blade into a shape having the predetermined angle.
  • a cutting-tool holder for use in grinding is disclosed in JP 2006-205283 A with which a contact angle between a whetstone and a blade can be easily maintained at a predetermined angle ( see FIG. 1 ).
  • the cutting-tool holder as disclosed in JP 2006-205283 will hereinafter be referred to as "conventional cutting-tool holder for use in grinding”.
  • the conventional cutting-tool holder 501 for use in grinding includes a holder body 510 and a pair of handgrips 530.
  • the holder body 510 includes a pair of pinching portions 511 configured to hold a blade 502 (see FIG. 2 ) of a kitchen knife, and a connecting portion 512 with a substantially C-shaped cross section which connects the pinching portions 511.
  • the pair of handgrips 530 is configured to assist a user in opening and closing the holder body 510.
  • the side face of the blade 502 is brought into face-to-face contact with an inner face of the lower of the pinching portions 511, and the contact angle of the blade 502 with the whetstone is set at ⁇ 0 , for example. Then, the blade 502 held in the holder 501 is caused to move to-and-fro while a pressing force applied constantly to the blade 502 from above, so as to rub against the whetstone. This operation makes the edge angle of the blade 502 into ⁇ 0 .
  • the above-described construction of the conventional cutting-tool holder 501 for use in grinding may serve to make the contact angle between the whetstone and the blade 502 into ⁇ 0 , but may be considered to require manual skill of no mean order in applying a force to the blade 502 so as to keep the contact angle constantly at ⁇ 0 without causing the blade 502 to sway.
  • the pressing force F 1 applied to the blade 502 toward the whetstone is weak (i.e., F 1 is smaller than F)
  • the side face of the blade 502 is separated from the inner face of the pinching portion 511, thus making the contact angle with the whetstone into ⁇ 1 greater than ⁇ 0 , as shown in FIG. 2B .
  • the pressing force F 2 is too strong (i.e., F 2 is greater than F)
  • the contact angle of the blade 502 becomes ⁇ 2 smaller than ⁇ 0 during the grinding operation.
  • the conventional cutting-tool holder for use in grinding could disadvantageously allow the contact angle ⁇ 0 to change depending upon the force applied to the blade during the grinding operation.
  • the present invention has been made in an attempt to eliminate the above disadvantages.
  • Illustrative, non-limiting embodiments of the present invention overcome the above disadvantages and other disadvantages not described above.
  • the present invention is not required to overcome the disadvantages described above, and an illustrative, non-limiting embodiment of the present invention may not overcome any of the problems described above.
  • a cutting-tool holder for use in grinding, which comprises a pinching portion, a connecting portion and a retaining portion.
  • the pinching portion comprises a pair of pinching pieces configured to pinch a blade of a kitchen knife.
  • the connecting portion has a generally C-shaped cross section which connects base ends of the pinching pieces with each other, and is configured to bias the pinching pieces toward each other.
  • the retaining portion is provided at an inside of the connecting portion and configured to retain a back of the blade of the kitchen knife pinched by the pinching pieces.
  • the retaining portion may comprise a channel formed at the inside of the connecting portion.
  • the retaining portion may comprise a recess formed between a pair of projections disposed at the inside of the connecting portion.
  • a channel may be formed in a surface between the projections disposed at the inside of the connecting portion.
  • the blade of the kitchen knife may be squeezed into the pinching portion in such a manner that the back of the blade comes in contact with the retaining portion.
  • a swaying motion of the blade can be suppressed which could otherwise occur when the blade provided with the cutting-tool holder and placed on a whetstone is pressed from above, because the back of the blade is retained in the retaining portion. Consequently, the contact angle between the blade and the whetstone can be maintained constant.
  • the pinching pieces may have substantially parallel faces which are configured to come in contact with the blade of the kitchen knife.
  • the cutting-tool holder in accordance with each of the above embodiments may further comprise a reinforcing member disposed at an outside of the connecting portion.
  • the cutting-tool bolder in accordance with each of the above embodiments may further comprise a gripper member which comprises a pair of handgrips corresponding to the pair of pinching pieces.
  • the connecting portion has a pair of openings disposed in positions corresponding to the pair of pinching pieces, and each of the handgrips has a first end portion, a middle portion and a second end portion.
  • the first end portion is attached to a corresponding pinching piece
  • the middle portion is disposed through a corresponding opening provided in the connecting portion
  • the second end portion extends away from the pinching pieces.
  • the cutting-tool holder can be attached to or detached from a blade of a kitchen knife with increased ease.
  • each handgrip of the gripper member is disposed (not outside but inside the connecting portion) through the opening provided in the connecting portion, the handgrips never interfere with the whetstone.
  • the cutting-tool holder in accordance with each of the above embodiments may further comprise a protective member covering an inner face of each pinching piece.
  • a contact angle between the blade and the whetstone can be kept constant, with the result that the angle of an edge of the blade after grinding can be made into a predetermined angle. Accordingly, the sharpness of the kitchen knife can be maintained.
  • a cutting-tool holder 1 for use in grinding includes a holder body 10 configured to pinch a blade of a kitchen knife, a retaining portion 20 provided in the holder body 10, a protective member 30 fixed to an inner surface of the holder body 10, a reinforcing member 40 fixed to an outer surface of the holding body 10, and a gripper member 50 attached to the holder body 10.
  • the cutting-tool holder 1 is shaped symmetrically with respect to a plane (central axis as indicated by a chain line C in sectional view of FIG. 5A ).
  • the holder body 10 includes a pinching portion 11 and a connecting portion 12.
  • the pinching portion 11 includes a pair of pinching pieces 11a, 11a configured to pinch a blade of a kitchen knife.
  • the connecting portion 12 is a member which connects base ends of the pinching pieces 11a, 11a with each other.
  • Each pinching piece 11a of the pinching portion 11 includes, as shown in FIG. 5A , a tip end portion 11b configured to hold a side of a blade when the blade is pinched, and a base end portion 11c integrally formed with the connecting portion 12 and thus connected therewith at a corresponding opening 12a provided in the connecting portion 12.
  • the pinching piece 11a has a substantially L-shaped cross section and arranged so that a face of the tip end portion 11b which is configured to come in contact with the blade of the kitchen knife when the blade is pinched is substantially parallel to the side of the blade. This configuration makes it possible to stably hold the blade of the kitchen knife. Moreover, with this configuration, the blade to be pinched is prevented from being slid, and thus the back of the blade once engaged with the retaining portion 20 which will be described later would never come off during grinding operation.
  • the pinching piece 11a further includes substantially rectangular punched holes 11d ( see FIG. 4 ) in which projections 30a of the protective member 30 which will be described later are fitted.
  • the connecting portion 12 has a generally rectangular shape as viewed in front elevation as shown in FIG. 4 , and a generally C-shaped cross section as shown in FIG. 5A .
  • the connecting portion 12 is thus configured to bias the pinching pieces 11a, 11a toward each other.
  • each opening 12a of the connecting portion 12 has its lower edge defined by an end face of the corresponding base end portion 11c.
  • To the holder body 10 is thus imparted an elasticity such that the pinching pieces 11a, 11a are pressed (biased) against each other when the holder body 10 is closed and tend to approach to some extent when the holder body 10 is opened by the gripper member 50.
  • openings 12b and 12c are also punched in the connecting portion 12 .
  • openings 12b and 12c are also punched in the connecting portion 12 .
  • the protective member 30 is a member for preventing scratches or flaws which would be made on the sides of the blade if the blade were brought directly into contact with the pinching pieces 11a, 11a, and thus made, for example, of a material, such as polyethylene (PE) or other synthetic resins, which is lower in hardness than the blade.
  • the shape of the protective member 30 is, in this embodiment, substantially the same as that of the holder body 10, so that the protective member 30 covers an inner surface of the holder body 10 almost in its entirety.
  • the protective member 30 may be provided partially, for example, over an inner face of each pinching piece 11a alone.
  • the protective member 30 may preferably but not necessarily be provided over a channel (or recess) 20a, which will be described later, formed at the inside of the connecting portion 12 so that the back of the blade can be fitted and engaged into the channel 20 with increased ease.
  • the protective member 30 covering the inner face of each pinching piece 11a may be configured to extend out of its end and to further cover the tip end portion 11b (particularly over an end face thereof) of the pinching piece 11a, as shown in FIG. 5A . This configuration serves to prevent damage to the blade which could otherwise result from contact of the blade with the tip end portion 11b of the pinching piece 11a.
  • the protective member 30 may be fixed to the inner surface of the holder body 10 with an adhesive, or with the projections 30a provided in positions corresponding to openings 11 provided in the pinching piece 11a as in the present embodiment.
  • each projection 30a has a barb engageable with edges of a corresponding opening 11 of the pinching piece 11a, so that once the projections 30a are fitted into the openings 11, the protective member 30 is fixed to the holder body 10.
  • the protective members 30 have openings 30b and 30c for gripper member 50 punched therein, through which handgrips 50a, 50a that will be described later are inserted therethrough.
  • the retaining portion 20 includes a pair of projections 20b, 20b and a channel 20a formed (as a recess) in a surface between the projections 20b and 20b.
  • the channel 20a formed at the inside of the connecting portion 12 is contoured by an inner surface of a generally U-shaped cross section of the connecting portion 12.
  • the inside of the channel 20a may have a curved cross section as in the present embodiment, but the present invention is not limited thereto; alternatively, the inside of the channel 20a may have a rectangular cross section.
  • the channel 20a has dimensions enough to accommodate the back of the blade.
  • the projections 20b, 20b are made of the protective members 30 shaped like ribs which extend along respective edges of the channel 20a formed at the inside of the connecting portion 12, and protrude from the channel 20a toward the pinching pieces 11a.
  • the projections 20b, 20b are integral parts of the protective member 30.
  • the inside of the channel 20a is also covered by the protective member 30.
  • the shape of the channel 20a in the present embodiment is provided by the contour of the inner surface of the connecting portion 12 between the projections 20b and 20b, the channel 20 may be shaped by the projections 20b, 20b (as a recess formed between the projections 20b and 20b).
  • the retaining portion 20 (comprised of the channel 20a and the projections 20b, 20b in the present embodiment) is provided in the connecting portion 12 as described above, the back of the blade is fitted and retained in the holder body 10 when the cutting-tool holder 1 is attached to the blade. Accordingly, the force applied to the blade from above during grinding operation would never cause the contact angle between the whetstone and the blade to change, and thus the blade can be ground with the contact angle kept constant.
  • the retaining portion 20 illustrated in FIG. 5A may be designed differently; e.g., like a retaining portion 20' illustrated in FIG. 5B in which the channel 20a' is deeper than the channel 20a because the recess in the inner surface of the connecting portion 12 in FIG. 5B is deeper than that in FIG. 5A and the projections 20b', 20b' are longer than the projections 20b, 20b.
  • the deeper channel 20' such as to hold substantially half or more of the dimension of a blade of a kitchen knife from its back to its edge may be preferable depending on an application, because the blade is fixed more stably in the holder 1 for grinding operation so that the kitchen knife can be ground with the contact angle between the blade and a whetstone kept constant during the grinding operation. Accordingly the grinding operation can be performed with increased precision and improved safety, and may result in a desirably uniform edge of the blade.
  • the retaining portion 20 (20') comprised of the channel 20a (20a', 20a') or recess and the projections 20b, 20b (20b', 20b') may preferably but not necessarily have a generally V-shaped cross section, in that the retaining portion 20 (20') shaped like this can be engageable with any blade having different widths.
  • the reinforcing member 40 of which two are provided at an outside of the connecting portion 12 in this embodiment, has a substantially rectangular shape as viewed from the front as shown in FIG. 4 , but the present invention is not limited to this particular configuration; any shape and arrangement may be possible as long as it serves to enhance the rigidity of the connecting portion 12 at its outside by covering the outer surface of the connecting portion 12.
  • the reinforcing member 40 is fixed on an outer surface of the connecting portion 12 by spot welding or the like, and besides, by means of projections 40a provided such that they are fitted in the openings 12d ( see FIG. 3 ) for reinforcing member 40.
  • the engagement of the projections 40a of the reinforcing member 40 with the openings 12d of the connecting portion 12 can enhance the fixation of the reinforcing member 40 relative to the connecting portion 12, and thus even when the blade to which the holder 1 is attached is slid across the whetstone in a direction of the length of the reinforcing member 40, the reinforcing member 40 can be anchored fast to the connecting portion 12 by the projections 40a fitted in the openings 12d.
  • the reinforcing member 40 may preferably be made of material capable of resisting abrasion.
  • abrasion-resistant material may include, for example, mild steel such as an unannealed steel material.
  • the gripper member 50 includes a pair of handgrips 50a, 50a.
  • Each handgrip 50a is formed of a single sheet of steel, stainless steel or other materials stamped into a shape generally like a letter T as viewed from the front according to the present embodiment, but the shape consistent with the present invention is not limited to this embodiment.
  • each handgrip 50a has a first-end portion extending from one end of the handgrip 50a and fixed to an outer face of a corresponding pinching piece 11a by spot welding or the like, a middle portion adjacent the first-end portion and located in an inside space of the holder body, and a second-end portion adjacent to the middle portion, extending to the opposite end of the handgrip 50a and located outside the holder body 10.
  • the handgrip 50a extends from the one end into the inside space of the holder body 10 through the opening 12c for the handgrip 11a formed in the connecting portion 12 and the opening 30c for the handgrip 11a formed in the protective member 30.
  • the handgrip 50a further extends and protrudes out from the holder body 10 through the opening 30b for the handgrip 11a formed in the protective member 30 and through the opening 12b for the handgrip 11a formed in the connecting portion 12, to the opposite end located a predetermined distance away from the connecting portion 12. Since each handgrip 50a is disposed inside the connecting portion 12 partially, it is not interfere with the whetstone during grinding operation.
  • each handgrip 50a has a recess 50b formed to facilitate the handling (pressing operation) of the gripper member 50, and a rib 50c formed to prevent deformation due to the force applied when the gripper member 50 is operated to pinch a blade. It is however to be understood that the recess 50b and the rib 50c are optional, and other shapes or arrangements may be adopted for similar purposes within the scope of the present invention.
  • FIGs. 6A-6C are diagrams showing a method of attaching the holder 1 to a blade of the kitchen knife 2.
  • FIG. 6A shows a state of the cutting-tool holder 1 for explaining a method of opening the cutting-tool holder 1.
  • FIG. 6B shows a state in which the blade of the kitchen knife 2 is inserted into the cutting-tool holder 1.
  • FIG. 6C shows a state in which the blade is pinched by the cutting-tool holder 1.
  • FIGs. 7A and 7B are vertical sections showing the cutting-tool holder 1 in use.
  • FIG. 7A shows a state in which the blade held by the cutting-tool holder 1 is placed on a whetstone.
  • FIG. 7B shows a state in which the blade held by the cutting-tool holder 1 is being ground.
  • FIG. 8 is a perspective view showing a state in which the cutting-tool holder 1 is used to grind the kitchen knife 2.
  • a method of attaching the holder 1 to a blade of a kitchen knife 2 is described below.
  • a user applies his/her fingers on the recesses 50b, 50b of the handgrips 50a, 50a, and presses them in directions indicated by outlined arrows in FIG. 6A .
  • the pinching pieces 11a, 11a joined to the handgrips 50a, 50a are unfolded.
  • a blade 2a of the kitchen knife 2 is inserted from its back 2c through a gap between the pinching pieces 11a and 11a, as shown in FIG. 6B .
  • the blade 2a is pressed in until the back 2c of the blade 2a is brought into contact with the protective member 30 covering the channel 20a (20a').
  • the biasing force derived from the elasticity of the connecting portion 12 causes the pinching pieces 11a, 11a to automatically close until the blade 2c is pinched between the tip end portions 11b and 11b as shown in FIG. 6C . In this way, the kitchen knife 2 is attached to the cutting-tool holder 1.
  • the kitchen knife 2a with its blade 2a held by cutting-tool holder 1 is placed on a whetstone 3 as shown in FIG. 7A .
  • the contact angle of the blade 2a with respect to the whetstone is set at ⁇ .
  • FIG. 7B is a vertical section of the state in which the blade 2a is being ground, it is shown that even when the force is applied from upward during grinding operation, the back 2c of the blade 2a is accommodated and retained in the retainer 20 (20'), and thus the contact angle ⁇ as shown in FIG. 7A can be kept unchanged, so that the grinding operation can be carried out with the contact angle kept constant. Consequently, the angle of the edge 2b of the blade 2a can be made into ⁇ without fail.
  • the kitchen knife 2 to which the cutting-tool holder 1 is attached is turned upside down, and the other side of the blade 2a is ground by the same method as described above.
  • water, oil or other lubricants may be used where appropriate.
  • the contact angle ⁇ may preferably be set at a predetermined angle approximately in a range from 10 to 15 degrees for Japanese cuisine, and in a range from 30 to 40 degrees for Western (European and American) cuisine.
  • the contact angle ⁇ may be determined by the width of the blade and the shape of the holder. To be more specific, the smaller the radius of curvature of the generally C-shaped cross section of the connecting portion 12 is, the smaller the contact angle ⁇ is; the larger the radius of curvature of the generally C-shaped cross section of the connecting portion 12 is, the larger the contact angle ⁇ is. Accordingly, if the shape of the connecting portion 12 is determined in accordance with the optimum angle of the edge, the blade can be brought into contact with the whetstone at a desirable angle.
  • FIG. 9 is a general perspective view of the cutting-tool holder 101.
  • FIG. 10A is a diagram showing a state in which a point of a blade 102a is brought into contact with a retaining portion 120 of the cutting-tool holder 101
  • FIG. 10B is a diagram showing a step in which the blade 102a is pinched by the cutting-tool holder 101, for explaining the method by which the blade of a kitchen knife is held in the holder.
  • the cutting-tool holder 101 as shown in FIG. 9 unlike the cutting-tool holder 1 as described above, fails to include a gripper member 50.
  • the retaining portion 120 is also different from the retaining portion 20 (20') of the cutting-tool holder 1, and fails to include projection 20b (20b').
  • the cutting-tool holder 101 includes a holder body 110, a retaining portion 120, a protective member 130, and a reinforcing member 140.
  • the holder body 110 includes a pinching portion 111 and a connecting portion 112.
  • the connecting portion 112 is substantially the same as the connecting portion 12 described above.
  • the pinching portion 111, a channel 120a making up the retaining portion 120, the holder body 110, the protective member 130, and the reinforcing member 140 are substantially the same as the pinching portion 11, the channel 20a (20a') making up the retaining portion 20 (20'), the holder body 10, the protective member 30, and the reinforcing member 40, respectively. Therefore, a duplicate description of these components will be omitted herein.
  • a method of using the cutting-tool holder 101 is described below.
  • a back 102c of a blade 102a of a kitchen knife is oriented to face a channel 120a as the retaining portion 120, and a point 102d is brought into contact with the channel 120a.
  • the kitchen knife is pressed toward the holder body 110.
  • the blade 102a of the kitchen knife is held in the pinching portion 111.
  • the blade 2a is ground, following the method as described above.
  • the blade of the kitchen knife can be ground with a contact angle with a whetstone kept constant at a predetermined angle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP07253513A 2007-06-06 2007-09-05 Schneidwerkzeug zum Schleifen Not-in-force EP2000255B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007149921A JP4436385B2 (ja) 2007-06-06 2007-06-06 刃物研磨用ホルダ

Publications (2)

Publication Number Publication Date
EP2000255A1 true EP2000255A1 (de) 2008-12-10
EP2000255B1 EP2000255B1 (de) 2010-06-23

Family

ID=38625875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07253513A Not-in-force EP2000255B1 (de) 2007-06-06 2007-09-05 Schneidwerkzeug zum Schleifen

Country Status (5)

Country Link
EP (1) EP2000255B1 (de)
JP (1) JP4436385B2 (de)
AT (1) ATE471787T1 (de)
DE (1) DE602007007307D1 (de)
DK (1) DK2000255T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103331657A (zh) * 2013-06-24 2013-10-02 苏州快吉刀片制造有限公司 一种刀片带定位装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200450345Y1 (ko) * 2009-04-14 2010-09-24 김경희 숫돌 받침대의 높낮이 조절 및 절첩장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US852750A (en) * 1906-03-28 1907-05-07 Edward W Wheeler Holder for razor-blades.
US1470514A (en) * 1922-10-07 1923-10-09 Voges Ernest Razor-blade sharpener
US3924360A (en) * 1971-11-04 1975-12-09 Paul C Haile Knife sharpener
AU2005242117A1 (en) * 2005-01-26 2006-08-10 Master Cutlery Corporation Cutting-tool holder used for grinding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US852750A (en) * 1906-03-28 1907-05-07 Edward W Wheeler Holder for razor-blades.
US1470514A (en) * 1922-10-07 1923-10-09 Voges Ernest Razor-blade sharpener
US3924360A (en) * 1971-11-04 1975-12-09 Paul C Haile Knife sharpener
AU2005242117A1 (en) * 2005-01-26 2006-08-10 Master Cutlery Corporation Cutting-tool holder used for grinding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103331657A (zh) * 2013-06-24 2013-10-02 苏州快吉刀片制造有限公司 一种刀片带定位装置

Also Published As

Publication number Publication date
JP4436385B2 (ja) 2010-03-24
EP2000255B1 (de) 2010-06-23
DK2000255T3 (da) 2010-09-27
JP2008302447A (ja) 2008-12-18
ATE471787T1 (de) 2010-07-15
DE602007007307D1 (de) 2010-08-05

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