EP0288404A1 - Florettklinge - Google Patents

Florettklinge Download PDF

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Publication number
EP0288404A1
EP0288404A1 EP88420135A EP88420135A EP0288404A1 EP 0288404 A1 EP0288404 A1 EP 0288404A1 EP 88420135 A EP88420135 A EP 88420135A EP 88420135 A EP88420135 A EP 88420135A EP 0288404 A1 EP0288404 A1 EP 0288404A1
Authority
EP
European Patent Office
Prior art keywords
blade
inertia
plane
section
faces
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.)
Withdrawn
Application number
EP88420135A
Other languages
English (en)
French (fr)
Inventor
Jean André Begon
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.)
Begon SA
Original Assignee
Begon SA
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 Begon SA filed Critical Begon SA
Publication of EP0288404A1 publication Critical patent/EP0288404A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B13/00—Thrusting-weapons; Cutting-weapons carried as side-arms
    • F41B13/02—Sabres; Cutlasses; Swords; Epees

Definitions

  • sword blades have, in cross section, a shape in circumflex accent shown in Figure 1 and dimensions which are reduced from the tang to the free end of the blade.
  • the object of the invention is to provide a new section of sword blade eliminating the concentrations of stress on the edges, lightening the blade and allowing its manufacture by industrial means and at lower cost.
  • the sword blade according to the invention has in cross section, at all points along its length, a shape whose moments of inertia, with respect to the transverse plane of inertia containing the neutral fiber, are substantially equal, this shape being composed, on the one hand, in the rib working in compression, of an elementary polygonal section having at least two faces parallel to the plane of inertia, and two lateral faces perpendicular to the previous two, and on the other hand, in the wing area working in bending, of two elementary sections, equally spaced on either side of the vertical median plane of the blade, each having a polygonal shape having at least two faces parallel to the plane of inertia and two lateral faces perpendicular to these two last faces, these last two elementary sections constituting, along the length of the blade, extension cords which are each connected to the coast by stress concentration pads, accumulating the fatigue resulting from the stresses on the blade, and arranged so as to be secanted by the plane of inertia.
  • the blade is made up of a rib of polygonal section connected by the constraint studs to two spaced extension cords whose sum of the moments of inertia with respect to the plane of inertia is equal to the moment of inertia of the side in the same cross section.
  • the manufacture of this blade can be carried out industrially by machining machines with numerical control, which allows, by the complete automation of the machining phases to lower the cost of this manufacturing, and to obtain perfect reproducibility of shapes and dimensions.
  • the stress concentration pads connecting the various elementary sections of the blade are delimited by machining carried out in two ribs arranged in a "V" shape with respect to each other connecting each the rib to one of the extension cords and having a rectangular cross section.
  • the blade has in cross section a "V" shape, which gives it a general appearance similar to that of a traditional sword although it is distinguished by superior qualities.
  • the machining operations delimiting the stress concentration pads consist of two longitudinal rows superimposed on oblong slots offset by a constant pitch, arranged parallel to the longitudinal axis of the blade and on either side thereof, the lights of one of the rows being offset from those of the other row.
  • the sword blade according to the invention has in cross section a shape composed, at the level of the rib, of an elementary section A and, at the level of the wings, of elementary sections B.
  • the elementary section A has a polygonal shape comprising two faces 10a-10b parallel to each other and to the plane of inertia x′-x and two lateral faces 12a-12b, mutually parallel and perpendicular to the aforementioned faces 10a-10b and to the plane d 'inertia x′-x.
  • the elementary section A also comprises, on either side of the face 10b, two transverse faces 13a-13b inclined and constituting the back of the rib.
  • Each of the elementary sections B also has a polygonal shape delimited by two plane faces 14a-14b parallel to each other and parallel to the plane of inertia x′-x, by two lateral plane faces 15a-15b parallel to each other but perpendicular to the faces 14a- 14b and by inclined faces 16a-16b and 16c delimiting chamfers on the extension cords thus formed.
  • Each of the elementary sections B is connected to the elementary section A by a rib generally designated by 17.
  • FIGS. 2 and 3 show that these ribs form a regular "V" on either side of the vertical median plane P of the blade and that they are secanted by the plane x′-x. More precisely, these ribs 17 comprise machining operations 18 delimiting between them stress concentration pads 19 accumulating the fatigue resulting from stresses exerted on the blade and capable of yielding beyond a certain value of this fatigue.
  • FIG. 4 shows that the machining operations 18 consist of two longitudinal rows superposed on oblong slots.
  • the two rows are arranged parallel to the longitudinal axis of the blade and on either side of this axis.
  • the lights 18 are distributed with a constant pitch p and the lights of one of the two rows are offset by half a step with respect to those of the other row to form the studs 19, of small dimensions, able to yield for a fatigue value of the metal although cut off by the plane of inertia x′-x.
  • the elementary section A comprises an internal groove 20 capable of receiving an electrical conductor detecting the keys during combat.
  • FIG. 2 and 3 corresponding to two cross sections disposed respectively near the free end of the blade and near the tang, clearly show that despite the dimensional variations of the elementary sections of the blade, this blade retains throughout its length of the planar faces 10a-10b, 12a-12b, 15a-15b, 14a-14b, allowing it to be machined by current or robotic machine tools, which was not the case with the blades comprising the section shown in FIG. 1 .
  • This machining mode makes it possible to vary the dimensions of the elementary cross sections on demand and thus to vary the rigidity of the blade and the position of the flexible zones, therefore to adapt the blade to the wishes of the user.
  • This advantage new compared to forged blades having irregular characteristics, is reproducible from one blade to another since it only depends on the transverse dimensions given to the blade by machining.
  • it makes it possible to manufacture a whole range of blades differentiated by their length, their flexibility, the position of the flexible zones but each having reproducible characteristics, therefore calibrated.
  • the blade has little material on either side of the plane of inertia x′-x and is therefore lighter than a traditional blade.
  • the slots 18 are advantageously executed by laser machining.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Knives (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Harvester Elements (AREA)
EP88420135A 1987-04-23 1988-04-22 Florettklinge Withdrawn EP0288404A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8706042 1987-04-23
FR8706042A FR2614409B1 (fr) 1987-04-23 1987-04-23 Lame d'epee

Publications (1)

Publication Number Publication Date
EP0288404A1 true EP0288404A1 (de) 1988-10-26

Family

ID=9350591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420135A Withdrawn EP0288404A1 (de) 1987-04-23 1988-04-22 Florettklinge

Country Status (9)

Country Link
US (1) US4890390A (de)
EP (1) EP0288404A1 (de)
JP (1) JPS63315897A (de)
KR (1) KR880012979A (de)
CN (1) CN1030639A (de)
DD (1) DD284751A5 (de)
FR (1) FR2614409B1 (de)
HU (1) HU198629B (de)
PL (1) PL271965A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303871A1 (de) * 1992-02-13 1993-08-19 Leon Paul Equipment Co Ltd
GB2264065B (en) * 1992-02-13 1995-04-26 Leon Paul Equip Co Ltd Fencing blade
US6842986B2 (en) 2002-11-15 2005-01-18 Christopher A. Holler Cutting tool with sloping proximal portion and associated methods
US7013569B2 (en) * 2002-11-15 2006-03-21 Holler Christopher A Cutting tool with curved distal portion and associated methods
KR100601694B1 (ko) 2004-07-20 2006-07-14 삼성전자주식회사 폐토너 수집장치, 및 이를 구비한 전자사진방식화상형성장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR439666A (fr) * 1912-02-02 1912-06-20 Gilbert Bougnol Perfectionnements apportés à la construction des armes d'escrime, épées, fleurets et sabres
GB2129315A (en) * 1982-10-22 1984-05-16 Uhlmann Sportgeraete Fencing blade
WO1986006824A1 (fr) * 1985-05-10 1986-11-20 Begon S.A. Société Anonyme Lame d'escrime de securite

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4671005A (en) * 1985-05-09 1987-06-09 Arnold W. Jewell Trigger mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR439666A (fr) * 1912-02-02 1912-06-20 Gilbert Bougnol Perfectionnements apportés à la construction des armes d'escrime, épées, fleurets et sabres
GB2129315A (en) * 1982-10-22 1984-05-16 Uhlmann Sportgeraete Fencing blade
WO1986006824A1 (fr) * 1985-05-10 1986-11-20 Begon S.A. Société Anonyme Lame d'escrime de securite

Also Published As

Publication number Publication date
CN1030639A (zh) 1989-01-25
PL271965A1 (en) 1989-01-23
US4890390A (en) 1990-01-02
FR2614409A1 (fr) 1988-10-28
HUT48019A (en) 1989-04-28
KR880012979A (ko) 1988-11-29
HU198629B (en) 1989-11-28
JPS63315897A (ja) 1988-12-23
FR2614409B1 (fr) 1989-07-21
DD284751A5 (de) 1990-11-21

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