EP1510303A1 - Couteau - Google Patents

Couteau Download PDF

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Publication number
EP1510303A1
EP1510303A1 EP03019863A EP03019863A EP1510303A1 EP 1510303 A1 EP1510303 A1 EP 1510303A1 EP 03019863 A EP03019863 A EP 03019863A EP 03019863 A EP03019863 A EP 03019863A EP 1510303 A1 EP1510303 A1 EP 1510303A1
Authority
EP
European Patent Office
Prior art keywords
knife
cutting edge
recesses
blade
knife according
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
EP03019863A
Other languages
German (de)
English (en)
Other versions
EP1510303B1 (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 AT03019863T priority Critical patent/ATE345906T1/de
Application filed by WMF Group GmbH filed Critical WMF Group GmbH
Priority to EP03019863A priority patent/EP1510303B1/fr
Priority to DE50305760T priority patent/DE50305760D1/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

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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, in the Preamble of claim 1 explained type.
  • Such a knife is known from US-A-1 793 171.
  • known serrations on the knife a bent out or leave the cutting edge on and off.
  • the cutting edge retains a straight continuous cutting edge. The wells are therefore only so far from a knife surface in the direction of the other Knife surface incorporated in the material that it is on the other knife surface do not leak.
  • the depressions are generated by a grinding wheel whose Grinding edge has a substantially semicircular cross-section.
  • serrated knives are also available in many other shapes on the market.
  • the most common serrated edge contains a multitude of juxtaposed ones Recesses that worked so far only in the material from a knife surface are that they emerge on the opposite knife surface, creating a results in a curved cutting edge.
  • Such a cutting edge has advantages in terms of the cutting of the material, because the serrated edge has a cutting edge on the sides of the bow, which is transverse to the normal direction of movement of the knife when cutting runs and thus the severing of transverse fibers strong relieved, so that the cut becomes smoother.
  • the cutting edge shifts to a slightly oblique position, which increases the cutting width; on the other hand, the cutting edges are conditional not optimally sharp by the geometry.
  • the invention is therefore based on the object, a simple and inexpensive to produce To create knives with an 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 Cutting edges of a serrated edge, without noticing its disadvantages would. Rather, the cutting edge of the knife according to the invention is symmetrical with respect to the median plane, the cutting edge being at its predominant Area razor sharp can be ground.
  • the depressions are particularly preferably rounded and placed so that the Cutting edge in side view of the blade surface is curved.
  • evenly deep bows can be made by substantially uniform Wells are generated, for specific applications or for training However, for cutting areas with special functions, the bends can also vary get deep.
  • a particular advantage of the embodiment according to the invention is that one also the cutting edge in plan view reciprocating, preferably also curved, can train.
  • this configuration in particular the crumb firmness greatly improved by knives, e.g. with bread a particularly smooth cut can be achieved.
  • the tip between the indentations makes it easier to score and cutting particularly smooth surfaces, such as bread crust or the skin of fruits and vegetables.
  • Fig. 1 shows a knife 1, which is used for cutting food, especially as Household knife is formed.
  • the knife 1 contains the usual knife handle 2, to a cutting area in the form of a knife blade 3 of the usual outer shape attached is.
  • the knife blade 3 can be made from any material suitable for knives be and is preferably made of a steel, rust-resistant and / or nachschleifbar.
  • the knife 1 is a household knife, in particular designed 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 with different blade shapes as well as straight or curved running Cutting edges and other dimensions and on cutting areas in the form of a Disc knife, for example, for bread slicers, applicable.
  • the blade 3 has, as well as Figs. 2 to 4, two blade surfaces 3a and 3b, which lie symmetrically on both sides of a median plane 4.
  • the two knife surfaces 3a and 3b close in the illustrated embodiment, a wedge angle ⁇ between them, and converge in an imaginary crest line 3c, which in the Center level 4 is located.
  • the blade 3 is near the imaginary vertex 3c of the blade surfaces 3a and 3b provided with a cutting edge 5, which has a serrated edge 6.
  • the serrated edge 6 extends almost over the entire longitudinal extent the blade 3, with only one puncture area at the top of the blade and a Area near the handle 2 has a conventional straight cutting edge.
  • the serration 6 can be changed and to special cutting functions be adjusted.
  • the serrated edge 6 contains a Variety of depressions 6a, 6b, the side by side and alternately once in the one Blade surface 3a and then incorporated into the other blade surface 3b.
  • the Recesses 6a, 6b are substantially dimensioned along the apex edge 3c identical, the term "essentially" unavoidable manufacturing deviations includes, which is inevitable in such thin-ground materials are.
  • the recesses 6a, 6b are immediately adjacent and alternately on opposite Knife surfaces 3a, 3b.
  • each of the recesses 6a, 6b extends in the direction of the opposite blade surface 3b and 3a over the median plane 4 and through the opposite blade surface, so that between adjacent recesses 6a, 6b on the different blade surfaces 3a, 3b form tips 7, which are substantially in the middle plane 4 and the imaginary Vertex edge 3c lie, while the cutting edge 5 between two tips 7 first drops and then rises again.
  • the recess 6a is incorporated in the blade surface 3a so that they on the opposite Blade surface 3b exits at a distance from the apex line 3c, the Substantially corresponds to the distance with which the in the opposite blade surface 3b incorporated 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 a semicircular boundary line 8 results to the respective blade surface, and they point in the direction of the Crest line 3c has an increasing penetration depth into the blade surface.
  • rounded recesses 6a, 6b provide a curved or curved shape sloping and rising cutting edge 5 interrupted by tips 7, from the crest line 3c curved away arches. Since the recesses 6a, 6b substantially identical and evenly aligned, since the depressions 6a, 6b each further extend substantially the same amount over the median plane 4, this results in a substantially equal, equally shaped and by Tips 7 mutually severed sheets existing cutting edge 5, if this in Side view of one of the blade surfaces 3a, 3b is considered.
  • the result is a reciprocating course of Cutting edge 5 about the median plane 4.
  • the course of the cutting edge 5 is curved or curved, with Changes in the direction of curvature in the tips 7.
  • the Recesses may have other shapes, such as trapezoidal or V-shaped Notches be formed, which then becomes a substantially zigzag Course of the cutting edge, both in plan view of the cutting edge and in side view on the knife surface, leads.
  • the wells do not necessarily have the entire length of the blade and formed on both blade surfaces the same and the same be spaced. It is also possible between adjacent, at different Sides of the blade arranged depressions instead of the tips larger straight to leave extending portions of the cutting edge.
  • the wells can also be rounded with other uniform or compound radii, so that instead of the drawn arcuate boundary line to the respective blade surface, to a circular arc-shaped course of the cutting edge in plan view and side view leads, formed as part of an ellipse 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)
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
DE50305760T DE50305760D1 (de) 2003-09-01 2003-09-01 Messer
ES03019863T ES2275984T3 (es) 2003-09-01 2003-09-01 Cuchillo.
AT03019863T ATE345906T1 (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 true EP1510303A1 (fr) 2005-03-02
EP1510303B1 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)

Cited By (3)

* 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
EP3613277A1 (fr) * 2018-08-24 2020-02-26 Pisek - Vitli Krpan, d.o.o. Tête de coupe pour excavateur ou machine forestière
WO2024069345A1 (fr) * 2022-09-26 2024-04-04 武汉苏泊尔炊具有限公司 Couteau

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (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

Patent Citations (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

Cited By (3)

* 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
EP3613277A1 (fr) * 2018-08-24 2020-02-26 Pisek - Vitli Krpan, d.o.o. Tête de coupe pour excavateur ou machine forestière
WO2024069345A1 (fr) * 2022-09-26 2024-04-04 武汉苏泊尔炊具有限公司 Couteau

Also Published As

Publication number Publication date
ATE345906T1 (de) 2006-12-15
ES2275984T3 (es) 2007-06-16
JP2005074221A (ja) 2005-03-24
EP1510303B1 (fr) 2006-11-22
RU2277468C2 (ru) 2006-06-10
SG121888A1 (en) 2006-05-26
DE50305760D1 (de) 2007-01-04
RU2004113297A (ru) 2005-10-27
JP3759943B2 (ja) 2006-03-29

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