EP1510303B1 - Couteau - Google Patents

Couteau Download PDF

Info

Publication number
EP1510303B1
EP1510303B1 EP03019863A EP03019863A EP1510303B1 EP 1510303 B1 EP1510303 B1 EP 1510303B1 EP 03019863 A EP03019863 A EP 03019863A EP 03019863 A EP03019863 A EP 03019863A EP 1510303 B1 EP1510303 B1 EP 1510303B1
Authority
EP
European Patent Office
Prior art keywords
knife
cutting edge
depressions
blade surface
blade
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.)
Expired - Lifetime
Application number
EP03019863A
Other languages
German (de)
English (en)
Other versions
EP1510303A1 (fr
Inventor
Rolf Dums
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.)
WMF Group GmbH
Original Assignee
WMF Group GmbH
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
Priority to DE50305760T priority Critical patent/DE50305760D1/de
Application filed by WMF Group GmbH filed Critical WMF Group GmbH
Priority to EP03019863A priority patent/EP1510303B1/fr
Priority to AT03019863T priority patent/ATE345906T1/de
Priority to ES03019863T priority patent/ES2275984T3/es
Priority to JP2004112440A priority patent/JP3759943B2/ja
Priority to RU2004113297/02A priority patent/RU2277468C2/ru
Priority to SG200402995A priority patent/SG121888A1/en
Publication of EP1510303A1 publication Critical patent/EP1510303A1/fr
Application granted granted Critical
Publication of EP1510303B1 publication Critical patent/EP1510303B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B9/00—Blades for hand knives
    • B26B9/02—Blades for hand knives characterised by the shape of the cutting edge, e.g. wavy

Definitions

  • the invention relates to a knife, in particular a household knife, the type explained in the preamble of claim 1.
  • Such a knife is known from US-A-1 793 171.
  • a knife is to be created which, despite molded-in depressions on the cutting edge, retains a straight cutting edge. Consequently, the recesses are incorporated into the material only so far from one blade surface in the direction of the other blade surface that they do not exit on the other blade surface.
  • the recesses are produced by a grinding wheel whose grinding edge has a substantially semicircular cross-section.
  • the desired razor sharp cutting edge results only in the central region of the recess, between the central regions of two adjacent wells a stronger cutting edge remains, the less for Tailoring contributes, but also less wears. In contrast, the razor-sharp area will wear out more, so that after a few cuts the effect of depressions fizzles.
  • serrated knives are also available in many other shapes on the market.
  • the most common serrated edge includes a plurality of adjacent recesses, which are so far incorporated only in one of the blade surface in the material that they emerge on the opposite blade surface, resulting in a curved cutting edge.
  • Such a cutting edge has advantages in terms of cutting the material, because the serrated edge provides a cutting edge on the sides of the sheet which is transverse to the normal direction of movement of the knife during cutting, thus greatly facilitating the cutting of transverse fibers so that the cut becomes smoother ,
  • the cutting edge is shifted to a slightly oblique position on the one hand, which increases the cutting width;
  • the cutting edges can not be optimally sharpened.
  • the invention is therefore based on the object to provide a simple and inexpensive to produce knife with improved cutting performance.
  • the inventive design the advantages in terms of a sharper cutting edge and pointing in the direction of movement of the knife edge portions of a serrated edge, without the disadvantages would be noted. Rather, the cutting edge of the knife according to the invention is symmetrical with respect to the median plane, wherein the cutting edge can be ground razor sharp on their vast area.
  • the recesses are particularly preferably rounded and placed so that the cutting edge is curved in a side view of the blade surface.
  • uniformly deep bends can be created by substantially uniform pits, however, for particular applications or to form cutting sections with special function, the bends can also become different depths.
  • a particular advantage of the embodiment according to the invention lies in the fact that it is also possible to form the cutting edge reciprocally in plan view, preferably also in a curved manner.
  • the crumb firmness Of knives greatly improved, which can be achieved for example a particularly smooth cut in bread.
  • the tip between the recesses makes it easier to scrape and cut particularly smooth surfaces, such as bread crust or the skin of fruits and vegetables.
  • Fig. 1 shows a knife 1, which is designed for cutting food, in particular as a household knife.
  • the knife 1 contains the usual knife handle 2, to which a cutting area in the form of a knife blade 3 of the usual outer shape is attached.
  • the knife blade 3 can be made of any material suitable for knives and preferably consists of a steel, rust-resistant and / or nachschleifbar.
  • the knife 1 is designed as a household knife, in particular as a bread knife, wherein the blade 3 has a sufficiently large length of for example 20 cm.
  • the invention is also applicable to other household knives having different blade shapes, straight or curved cutting edges and other dimensions, and cutting areas in the form of a disc knife, for example for bread slicing machines.
  • the blade 3, as well as Figs. 2 to 4 show two blade surfaces 3a and 3b, which are symmetrically opposite to each other on a median plane 4.
  • the two blade surfaces 3a and 3b in the illustrated embodiment include a wedge angle ⁇ between them, and converge in an imaginary vertex line 3c, which lies in the median plane 4.
  • the blade 3 is provided in the vicinity of the imaginary vertex line 3 c of the blade surfaces 3 a and 3 b with a cutting edge 5 having a serrated edge 6.
  • the serrated edge 6 extends almost over the entire longitudinal extent of the blade 3, wherein only a puncture region at the tip of the blade and a region in the vicinity of the handle 2 has a conventional straight cutting edge.
  • the arrangement of the serrated edge 6 can be changed and adapted to special cutting functions.
  • the serrated edge 6 contains a multiplicity of indentations 6a, 6b which are machined next to each other and alternately once in one knife surface 3a and then in the other knife surface 3b.
  • the recesses 6a, 6b are substantially identical in their dimensions along the apex edge 3c, the term "substantially” comprising unavoidable manufacturing variations that are unavoidable in such thinly ground materials.
  • the recesses 6a, 6b are immediately adjacent and alternately on opposite blade surfaces 3a, 3b.
  • each of the depressions 6a, 6b extends in the direction of the opposite blade surface 3b or 3a beyond the center plane 4 and through the opposite blade surface, so that tips 7 are formed between adjacent depressions 6a, 6b on the different blade surfaces 3a, 3b , which lie substantially in the median plane 4 and the imaginary vertex edge 3c, while the cutting edge 5 between two tips 7 first drops and then rises again.
  • the recess 6a is formed in the blade surface 3a so as to exit on the opposite blade surface 3b at a distance from the apex line 3c, which in the FIG Substantially corresponds to the distance with which the machined into the opposite blade surface 3b recess 6b on the blade surface 3a exits.
  • the recesses 6a and 6b are rounded, in the illustrated embodiment with a semicircular grinding tool, so that there is a semicircular boundary line 8 to the respective blade surface, and they have in the direction of the apex line 3c an increasing penetration depth in the blade surface.
  • rounded recesses 6a, 6b provide a curved or curving sloping and rising cutting edge 5 with arcs interrupted by tips 7 and curved away from the apex line 3c. Since the depressions 6a, 6b are arranged substantially identically and uniformly, since the depressions 6a, 6b continue to extend in each case substantially by the same amount over the center plane 4, the result is a substantially equal, identically shaped and by points 7 mutually separated sheets existing cutting edge 5, when viewed in side view of one of the blade surfaces 3a, 3b.
  • the serrated edge according to the invention can be provided only partially on the blade.
  • the depressions may have other shapes, for example, be formed as trapezoidal or V-shaped notches, which then leads to a substantially zigzag course of the cutting edge, both in plan view of the cutting edge and in side view of the blade surface.
  • the indentations need not necessarily be formed the same length over the entire length of the blade and on both blade surfaces and be equally spaced. It is also possible to leave between adjacent, arranged on different sides of the blade wells instead of the tips larger rectilinear portions of the cutting edge.
  • the wells can also be rounded with other uniform or composite radii, so that instead of the drawn arcuate boundary line to the respective blade surface, which leads to a circular arc shape of the cutting edge in plan view and side view, results in a part of an ellipse formed boundary line or a boundary line with a different shape.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Surgical Instruments (AREA)
  • Food-Manufacturing Devices (AREA)

Claims (10)

  1. Couteau (1), notamment couteau de ménage, présentant une zone de coupe (3), dotée d'une denture (6), qui comprend deux faces de couteau (3a, 3b) qui s'étendent respectivement des deux côtés du plan médian (4), sachant que la denture (6) comprend des creux (6a, 6b) formés des deux côtés du plan médian (4) et alternativement dans l'une et l'autre des faces du couteau (3a, 3b), caractérisé en ce que les creux (6a, 6b) s'étendent depuis une face du couteau (3a, 3b) en direction de l'autre face du couteau (3b, 3a) jusqu'au plan médian (4) afin de former, en vue latérale, un bord coupant (5) alternativement d'un côté et de l'autre des faces du couteau (3a, 3b).
  2. Couteau selon la revendication 1, caractérisé en ce que les creux (6a, 6b) sont arrondis.
  3. Couteau selon l'une des revendications 1 ou 2, caractérisé en ce que, en vue latérale, le bord coupant (5) est arrondi sur les faces de couteau (3a, 3b).
  4. Couteau selon la revendication 3, caractérisé en ce que les creux (6a, 6b) s'étendent vers l'extérieur jusqu'au plan médian (4) de telle sorte qu'en vue latérale, il en résulte un bord coupant (5) avec des courbures essentiellement de la même profondeur sur la face du couteau (3a, 3b).
  5. Couteau selon l'une des revendications 1 à 4, caractérisé en ce que, en vue de dessus, le bord coupant (5) se trouve alternativement d'un côté et de l'autre du plan médian.
  6. Couteau selon l'une des revendications 1 à 5, caractérisé en ce que, en vue de dessus, le bord coupant (5) est essentiellement arrondi.
  7. Couteau selon l'une des revendications 1 à 6, caractérisé en ce que les creux (6a, 6b) dans les faces du couteau (3a, 3b) présentent une ligne de limite (8) essentiellement en forme d'arc de cercle.
  8. Couteau selon l'une des revendications 1 à 7, caractérisé en ce que deux creux (6a, 6b) voisins sur les différentes faces de couteau (3a, 3b) se terminent en pointe (7) essentiellement sur le bord coupant (5) et entre les creux (6a, 6b).
  9. Couteau selon l'une des revendications 1 à 8, caractérisé en ce que les creux (6a, 6b) sur les deux faces de coupe (3a, 3b) sont essentiellement de la même taille et sont disposés avec essentiellement le même écart les uns entre les autres.
  10. Couteau selon l'une des revendications 1 à 9, caractérisé par sa réalisation en tant que couteau à pain (1).
EP03019863A 2003-09-01 2003-09-01 Couteau Expired - Lifetime EP1510303B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP03019863A EP1510303B1 (fr) 2003-09-01 2003-09-01 Couteau
AT03019863T ATE345906T1 (de) 2003-09-01 2003-09-01 Messer
ES03019863T ES2275984T3 (es) 2003-09-01 2003-09-01 Cuchillo.
DE50305760T DE50305760D1 (de) 2003-09-01 2003-09-01 Messer
JP2004112440A JP3759943B2 (ja) 2003-09-01 2004-04-06 ナイフ
RU2004113297/02A RU2277468C2 (ru) 2003-09-01 2004-04-30 Нож
SG200402995A SG121888A1 (en) 2003-09-01 2004-05-28 Knife

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03019863A EP1510303B1 (fr) 2003-09-01 2003-09-01 Couteau

Publications (2)

Publication Number Publication Date
EP1510303A1 EP1510303A1 (fr) 2005-03-02
EP1510303B1 true EP1510303B1 (fr) 2006-11-22

Family

ID=34089653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03019863A Expired - Lifetime EP1510303B1 (fr) 2003-09-01 2003-09-01 Couteau

Country Status (7)

Country Link
EP (1) EP1510303B1 (fr)
JP (1) JP3759943B2 (fr)
AT (1) ATE345906T1 (fr)
DE (1) DE50305760D1 (fr)
ES (1) ES2275984T3 (fr)
RU (1) RU2277468C2 (fr)
SG (1) SG121888A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2483674A (en) * 2010-09-15 2012-03-21 David Jennings A knife for wiping a surface
JP5924094B2 (ja) 2012-04-18 2016-05-25 新明和工業株式会社 刃物、その製造方法およびそれを製造するためのプラズマ装置
JP5914611B2 (ja) * 2014-10-06 2016-05-11 アーネスト株式会社 刃物
JP2017079939A (ja) * 2015-10-26 2017-05-18 株式会社 富田刃物 刃物類
SI25693A (sl) * 2018-08-24 2020-02-28 PIĹ EK - VITLI KRPAN, d.o.o. Rezalna glava za bager ali gozdarski stroj
CN218195311U (zh) * 2022-09-26 2023-01-03 武汉苏泊尔炊具有限公司 刀具
CN116370038B (zh) * 2023-03-30 2024-06-25 哈尔滨理工大学 一种基于水蛭牙齿的仿生手术刀

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE524324A (fr) *
GB247768A (en) * 1925-03-27 1926-02-25 Ernest North Improvements relating to knives for cutting bread, or for other uses
GB322398A (en) * 1929-02-16 1929-12-05 William Grant Improvements in or relating to knife blades
US1911974A (en) * 1931-06-03 1933-05-30 Remington Arms Co Inc Method of producing serrated edges
US2112271A (en) * 1934-12-22 1938-03-29 American Safety Razor Corp Pile wire
US2555735A (en) * 1947-04-19 1951-06-05 Estabrooks Norman Lewis Knife having a serrated edge
GB2113137A (en) * 1981-12-12 1983-08-03 Wilkinson Sword Ltd Knives

Also Published As

Publication number Publication date
DE50305760D1 (de) 2007-01-04
JP3759943B2 (ja) 2006-03-29
EP1510303A1 (fr) 2005-03-02
SG121888A1 (en) 2006-05-26
RU2277468C2 (ru) 2006-06-10
ES2275984T3 (es) 2007-06-16
RU2004113297A (ru) 2005-10-27
ATE345906T1 (de) 2006-12-15
JP2005074221A (ja) 2005-03-24

Similar Documents

Publication Publication Date Title
DE2106998C3 (de) Schneidklinge zum Schneiden von Flachmaterial
EP2873480B1 (fr) Lame de scie pour une scie à entraînement oscillant
EP3356073B1 (fr) Lame de scie à ruban à dent diviseuse de copeaux
EP1510303B1 (fr) Couteau
EP0904686A1 (fr) Couteau hache-paille
DE4405576C2 (de) Scherkopf für Naßrasierapparate
EP1030763B1 (fr) Dispositif coupant alternatif ou sous forme de bande
DE102012217094A1 (de) Hubtrennwerkzeug
DE2506406B2 (de) Haushalt- oder Berufsmesser
EP0916771B1 (fr) Dent de fraisage pour le travail de la terre
DE60204391T2 (de) Einsatz für Kugelfräser mit gezahnter Schneidkante
WO2013144230A1 (fr) Couteau
EP0224836B1 (fr) Barre à percussion pour broyeur à percussion ou broyeurs similaires
DE2058536A1 (de) Schneidblaetter fuer elektrische Schneidmesser und aehnliche motorgetriebene Messer
EP1329151A1 (fr) Taille-haie
DE3906351C2 (de) Messerklinge für Mähmesser von Erntemaschinen
DE2254647B2 (de) Saegezahnglied fuer eine saegekette
DE102019000412B4 (de) Küchenreibe
DE102014110128A1 (de) Sichelmesser
DE29703075U1 (de) Küchenmesser mit integriertem Obst- und Gemüseschäler
EP1985369B1 (fr) Mesureur de machine de coupe pour la fabrication d'aliments
EP1296806B1 (fr) Lame
EP0255617B1 (fr) Lame de scie pour scier du bois et du plastique
DE202015007456U1 (de) Wechselklinge
DE819137C (de) Vorrichtung zum Schaelen von Zitrusfruechten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20040220

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

AKX Designation fees paid

Designated state(s): AT DE ES SE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES SE

REF Corresponds to:

Ref document number: 50305760

Country of ref document: DE

Date of ref document: 20070104

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2275984

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070823

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50305760

Country of ref document: DE

Representative=s name: GRUENECKER, KINKELDEY, STOCKMAIR & SCHWANHAEUS, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50305760

Country of ref document: DE

Representative=s name: GRUENECKER, KINKELDEY, STOCKMAIR & SCHWANHAEUS, DE

Effective date: 20140224

Ref country code: DE

Ref legal event code: R081

Ref document number: 50305760

Country of ref document: DE

Owner name: WMF AG, DE

Free format text: FORMER OWNER: WMF WUERTTEMBERGISCHE METALLWARENFABRIK AG, 73312 GEISLINGEN, DE

Effective date: 20140224

Ref country code: DE

Ref legal event code: R082

Ref document number: 50305760

Country of ref document: DE

Representative=s name: GRUENECKER PATENT- UND RECHTSANWAELTE PARTG MB, DE

Effective date: 20140224

Ref country code: DE

Ref legal event code: R081

Ref document number: 50305760

Country of ref document: DE

Owner name: WMF GROUP GMBH, DE

Free format text: FORMER OWNER: WMF WUERTTEMBERGISCHE METALLWARENFABRIK AG, 73312 GEISLINGEN, DE

Effective date: 20140224

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50305760

Country of ref document: DE

Representative=s name: PFENNING, MEINIG & PARTNER MBB PATENTANWAELTE, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 50305760

Country of ref document: DE

Representative=s name: GRUENECKER PATENT- UND RECHTSANWAELTE PARTG MB, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50305760

Country of ref document: DE

Owner name: WMF GROUP GMBH, DE

Free format text: FORMER OWNER: WMF AG, 73312 GEISLINGEN, DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: WMF GROUP GMBH

Effective date: 20160912

REG Reference to a national code

Ref country code: AT

Ref legal event code: PC

Ref document number: 345906

Country of ref document: AT

Kind code of ref document: T

Owner name: WMF GROUP GMBH, DE

Effective date: 20170427

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50305760

Country of ref document: DE

Representative=s name: PFENNING, MEINIG & PARTNER MBB PATENTANWAELTE, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20220920

Year of fee payment: 20

Ref country code: DE

Payment date: 20220916

Year of fee payment: 20

Ref country code: AT

Payment date: 20220818

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20221007

Year of fee payment: 20

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230524

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50305760

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20230926

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 345906

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20230902

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG