EP0233416A1 - Taschenmesser - Google Patents

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Publication number
EP0233416A1
EP0233416A1 EP86400330A EP86400330A EP0233416A1 EP 0233416 A1 EP0233416 A1 EP 0233416A1 EP 86400330 A EP86400330 A EP 86400330A EP 86400330 A EP86400330 A EP 86400330A EP 0233416 A1 EP0233416 A1 EP 0233416A1
Authority
EP
European Patent Office
Prior art keywords
blade
handle
housing
knife according
knife
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Withdrawn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
EP86400330A
Other languages
English (en)
French (fr)
Inventor
Vitorio Caldoncelli-Vidal
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.)
CALDONCELLI VIDAL VITORIO
Original Assignee
CALDONCELLI VIDAL VITORIO
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 FR8419503A priority Critical patent/FR2575103B1/fr
Application filed by CALDONCELLI VIDAL VITORIO filed Critical CALDONCELLI VIDAL VITORIO
Priority to EP86400330A priority patent/EP0233416A1/de
Publication of EP0233416A1 publication Critical patent/EP0233416A1/de
Withdrawn legal-status Critical Current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
    • B26B1/00—Hand knives with adjustable blade; Pocket knives
    • B26B1/02—Hand knives with adjustable blade; Pocket knives with pivoted blade

Definitions

  • the present invention relates generally to a folding knife of the type in which the blade is pivotally mounted at one end of the handle and is arranged to be folded inside the latter.
  • detent knives in which a mechanism, actuated by push button or the like, is capable of carrying out the automatic opening and closing of the blade of the knife, this which can be dangerous, the blade movements being generally extremely fast.
  • this type of knife because it requires a number of internal mechanical parts, has relatively large dimensions.
  • Foldable knives are also widely known in which the blade is held in the open and closed position by a flexible mechanism with hard points.
  • a disadvantage of this type of knife is that the blade is not held rigidly in the open position, its pivoting being always authorized in the direction of closing. In addition, during said closing, the blade is likely to come into its housing with great force, which is dangerous.
  • the present invention aims to overcome these drawbacks and to propose a foldable knife which, while having means for locking the blade in open and closed positions, can have relatively reduced transverse dimensions, in particular to the benefit of less bulk and the elegance of its lines.
  • Another object of the invention consists in exploiting this relative thinness of the knife to actuate the locking means for the purpose of opening and closing.
  • the present invention relates to a folding knife, of the type comprising: a handle in which a longitudinal housing is formed, a pivoting blade in the region of one end of the housing, locking means arranged to immobilize the blade relative to the handle in an open or unfolded position and a closed or folded position, in which the blade is received in said housing, characterized in that the locking means comprise at least one finger projecting from a lateral edge of the blade in the region of its pivoting, arranged to cooperate with a recess formed in an associated surface of the handle, and in that the housing separates the handle into two substantially parallel and relatively flexible parts fixed to each other at the end of the housing opposite the pivot region, so that a movement of separation of the two parts of the handle causes the release of the finger from its associated recess so as to release the blade in rotation.
  • a folding knife according to a first form of the invention comprises a handle, generally indicated at 10 and formed of two parallel parts 12,14 fixed together at one of their ends ( on the left in FIGS. 1 to 3) by means of an element 16 forming a spacer, so that a substantially parallelepipedal housing 18 is defined between them.
  • the fixing may be carried out by rivets or by any other means.
  • the spacer 16 has the shape of a rectangular plate from which extends, substantially parallel to the parts 12, 14, a flexible bar 16 a similar to a conventional pen hanging bar. , which will advantageously store the knife in a pocket like a pen.
  • a blade At the opposite end of the parts 12, 14 of the handle is pivotally mounted a blade, generally indicated at 20.
  • the part 14 of the handle has on its inner face a transverse pivot axis 22 which passes through a circular hole 24 provided at the end on the pivoting side of the blade 20, and the free end of which is received in a second circular hole 26 formed opposite in the part 12 of the handle.
  • the knife further comprises means for blocking the blade 20 in the open and closed positions, respectively.
  • These locking means comprise, on the lateral face of the blade 20 facing the part 12 of the handle 10, a first cylindrical finger 28 in projection located between the hole 24 and the inner end (indicated in 20 a) of the blade 20, as well as a second finger 30 also cylindrical, but whose free end is bevel shaped.
  • the second finger 30 is in a position substantially symmetrical with the first finger 28 relative to the hole 24.
  • the locking means further comprise a recess 32 formed in the inner face of the part 12 of the blade 10.
  • Substantially at the center of the recess 32 is formed as a hole 34, of a diameter substantially equal to that of the fingers 28.30 and arranged so as to be opposite either the finger 28 or the finger 30, depending on whether the blade is in the open position or closed, respectively.
  • a hole 34 of a diameter substantially equal to that of the fingers 28.30 and arranged so as to be opposite either the finger 28 or the finger 30, depending on whether the blade is in the open position or closed, respectively.
  • the knife once assembled is in the form of a relatively rigid assembly, the pivot end of the blade 20 being firmly pinched between the two parts 12,14 of the handle.
  • the transverse thickness of said pivoting end of the blade 20 is in this respect substantially equal to that of the spacer 16, so that the two parts 12, 14 of the handle extend parallel one to the other.
  • the use of the knife according to this first embodiment is as follows: .
  • the end of the finger 30 is engaged in the associated hole 34 of the part 12, and the blade is thus firmly immobilized in this position.
  • the user simply drives the blade 20 outwards (downwards in FIG. 1) by pushing downwards using a finger on the bar 16a, the finger 30, thanks to the bevel conformation of its end, offering only a low resistance to this extraction movement.
  • the amplitude of this extraction movement can advantageously be increased by giving the bar 16a an outwardly curved shape, the downward thrust then being exerted in the central region thereof.
  • the blade can then be grasped from below to be made to pivot in the direction of the arrow 36 (FIG. 1) until the first finger 28 comes up against the upper edge of the recess 32.
  • the two parts 12,14 of the handle are then slightly separated with the fingers so that the finger 28 can first of all slide against the internal face of the recess 32, then come to engage by its free end in the associated hole 34, the parts 12, 14 again approaching one another by their elasticity, and the blade 20 thus being firmly locked in the open position.
  • the object of the offset 32 is to avoid that too great a spacing force is to be exerted to bring the finger into the hole 34.
  • the part 12 of the handle is slightly shorter than the part 14, so that, in the open position as in the closed position, the movements of the finger, which do not is not opposite the recess 32, are not hindered by said part 12, these taking place beyond the corresponding end of this part.
  • the parts 12, 14 are slightly apart, first of all to allow the finger 28 to be released from the hole 34 and then, after an appropriate pivoting according to the arrow 38 (FIG. 1), to insert the end of the finger 30 in the same hole 34.
  • the latching bar 16a can be designed so that the mutual spacing of the parts 12, 14 can be achieved by pushing it between said parts, in a movement similar to that intended for the extraction of the blade 20 from the closed position.
  • the bar may have, for example in the region of its free end, a triangular or trapezoidal cross section whose greatest width will be greater than the width of the housing 18 extending between the two parts 12,14.
  • the knife of Figures 4 to 6 differs from that of Figures 1 to 3 in that the spacer 16 does not include extension in the shape of a pen bar, but has the shape of an oblong element, entirely internal to the handle 10, arranged to act as a stop for the blade 20 in the closed position (not shown), so that a notch 40 for the nail , provided in the face of the blade 20 facing the part 14, projects outside the handle to be able to be used for opening.
  • the bevelled finger 30 will be positioned on the blade so as to be engaged in the hole 34 when the knife is in this closed position at the stop.
  • the knife of Figures 4 to 6 further comprises, at its end remote from the pivoting region, a loop 42 for its attachment.
  • the handle and the blade may have any shape and size.
  • the parts 12 and / or 14 of the handle may have any suitable profile insofar as they retain the flexibility necessary for the operation of the locking means.
  • the part 12 of the handle has a concave part 44 which has the object of making said part more flexible, in order to facilitate its spacing for the release of the blade, as well as d '' lighten the knife and facilitate its gripping.
  • blade was used in the foregoing description, for the pivoting element 20, it is understood that this element may take the form of any tool, instrument, specialized as d 'Daily use. In particular, it may take the form of a cutlery (fork, spoon) with an advantageous minimum size, in particular for use in camping or the like. The shape of the handle will then be modified accordingly to be able to receive the free end of the cover in the folded position.
  • the knife of the invention may be made of any suitable material, such as stainless steel, brass, with if necessary a surface treatment such as plating of precious metal, anodization, or even wood, plastic material, etc. ..
  • a surface treatment such as plating of precious metal, anodization, or even wood, plastic material, etc. ..
  • the finger 30 may be slightly offset in height relative to the axis 22 and to the other finger 28, so that in the folded position, the blade 20 projects slightly from its housing below the handle 10, which facilitates its extraction for example using the notch 40 provided in the blade, which will thus be made accessible.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
EP86400330A 1984-12-20 1986-02-17 Taschenmesser Withdrawn EP0233416A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8419503A FR2575103B1 (fr) 1984-12-20 1984-12-20 Couteau pliable
EP86400330A EP0233416A1 (de) 1986-02-17 1986-02-17 Taschenmesser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86400330A EP0233416A1 (de) 1986-02-17 1986-02-17 Taschenmesser

Publications (1)

Publication Number Publication Date
EP0233416A1 true EP0233416A1 (de) 1987-08-26

Family

ID=8196271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400330A Withdrawn EP0233416A1 (de) 1984-12-20 1986-02-17 Taschenmesser

Country Status (1)

Country Link
EP (1) EP0233416A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE26151C (de) * böntgen & SABIN in Solingen Taschenmesser roh Einrichtung zum Festhalten der Klinge in geöffnetem und geschlossenem Zustande
FR1063962A (fr) * 1952-08-11 1954-05-10 Latama Cutlery Canif porte-mine
FR1105832A (fr) * 1954-07-30 1955-12-08 Système de verrouillage pour lames de couteaux pliants
US2798290A (en) * 1956-10-10 1957-07-09 William E Bassett Combined tool
FR2151811A5 (de) * 1971-09-01 1973-04-20 Gerling Ernst

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE26151C (de) * böntgen & SABIN in Solingen Taschenmesser roh Einrichtung zum Festhalten der Klinge in geöffnetem und geschlossenem Zustande
FR1063962A (fr) * 1952-08-11 1954-05-10 Latama Cutlery Canif porte-mine
FR1105832A (fr) * 1954-07-30 1955-12-08 Système de verrouillage pour lames de couteaux pliants
US2798290A (en) * 1956-10-10 1957-07-09 William E Bassett Combined tool
FR2151811A5 (de) * 1971-09-01 1973-04-20 Gerling Ernst

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