EP0196437B1 - Couteau pour pose, en particulier couteau à tailler des tapis - Google Patents

Couteau pour pose, en particulier couteau à tailler des tapis Download PDF

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Publication number
EP0196437B1
EP0196437B1 EP86102027A EP86102027A EP0196437B1 EP 0196437 B1 EP0196437 B1 EP 0196437B1 EP 86102027 A EP86102027 A EP 86102027A EP 86102027 A EP86102027 A EP 86102027A EP 0196437 B1 EP0196437 B1 EP 0196437B1
Authority
EP
European Patent Office
Prior art keywords
shell
knife
handle
covering material
grip
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
Application number
EP86102027A
Other languages
German (de)
English (en)
Other versions
EP0196437A2 (fr
EP0196437A3 (en
Inventor
Bernd Reddig
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6266474&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0196437(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT86102027T priority Critical patent/ATE45535T1/de
Publication of EP0196437A2 publication Critical patent/EP0196437A2/fr
Publication of EP0196437A3 publication Critical patent/EP0196437A3/de
Application granted granted Critical
Publication of EP0196437B1 publication Critical patent/EP0196437B1/fr
Expired 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
    • B26B5/00—Hand knives with one or more detachable blades
    • B26B5/005—Hand knives with one or more detachable blades specially adapted for cutting cardboard, or wall, floor or like covering materials

Definitions

  • the invention relates to a laying knife, in particular a carpet knife, for cutting floor coverings, consisting of a multi-part bowl handle and a knife blade, which is clamped with its cutting edge at an angle of attack relative to the longitudinal axis of the bowl handle between its shell parts, which can be connected by means of a screw, and which is an internal magazine Include for replacement blades and have a handle contour on the outside.
  • Laying knives with a two-part shell handle are known, the two shell parts of which can be connected to one another by means of one or by means of two screws, the screw heads being arranged in a recessed manner and provided with a slot, so that a screwdriver, a coin or the like can be attached to the shell parts for a change separate the knife blade from each other and then firmly connect them again.
  • the knife blade which has to be replaced relatively frequently, is seated in a holder at one end of the shell handle and is clamped between the two shell parts. Protrusions inside the shell parts engage in recesses in the knife blade and ensure that the knife blade is held firmly and securely in the shell handle.
  • the knife blade protrudes approximately in a straight extension from the bowl handle (GB-PS 1 020 485), or is set at an angle of approximately 45 degrees with respect to the longitudinal axis of the bowl handle (US-PS 3 965 575).
  • the shell handle is exposed to considerable forces and is therefore often made of aluminum injection molding or a comparable solid material.
  • Known bowl handles are mostly very flat in cross-section and only have approximate handle contours which taper in a wedge shape at the end facing away from the knife blade to form a nose curvature formed on one side (GB-PS 1 020 485).
  • the flattened contour of the handle design of the shell handle has the practical advantage that there is space inside the shell handle for the arrangement of a magazine for replacement blades, which are stacked therein, but the disadvantage that easily painful pressure points in the hand of the user with large power transmission are noticeable.
  • Known from the literature mentioned above are also round, but then one-piece handles for such laying knives, but the magazine for replacement blades is then omitted and the disadvantage arises that the knife can be poorly guided by hand.
  • the knife blade with its longitudinal axis with respect to the central longitudinal axis of the handle shell has a small anticipating angle of attack of 5-10 degrees, in particular 5-8 degrees
  • the handle shell in the central region has a cross section with approximately the same extent in has the axes of an imaginary coordinate cross which, at the end opposite the knife blade, merges into an outer cross-section which widens on all sides in connection with the gripping surface.
  • the small anticipatory angle of attack of about 5 to 8 or 10 degrees reduces the effort required for cutting, and at the same time the handle is easier and safer to hold due to the cross-sectional expansion. Because the knife is pulled while cutting, the hand of the user, which is closed around the shell handle, is better supported on the shell handle and above all against the rear extension of the handle profile. This desired effect can be supported in that the shell handle in the grip area, especially in the area of the constant widening of the outer cross section at the rear end facing away from the knife blade, is designed with outer cross-sectional contours that approximate a rectangle. In addition, this makes the cross section of the handle pan overall larger (thicker) and adapts better to the hand size of the user than conventional laying knives with a flat handle profile.
  • the rear extension of the handle cross-section offers the possibility, especially in the case of longer cuts, to guide the laying knife with one hand in a conventional manner and with the thumb and curved index finger of the other hand the cross-sectional widening of the handle that presents itself as a bead reach behind at the free end to increase the pulling force when making the cut or to relieve the hand guiding the laying knife.
  • the laying knife can be gripped with both hands.
  • the resulting thicker design of the shell handle resulting from these features of the invention allows the arrangement of a magazine inside the shell handle, in which the spare blades can be accommodated standing on one side edge, so that the spare blades can be removed from the magazine much easier than with conventional lying in the magazine.
  • the two shell parts can be connected to one another at the end facing away from the blade by a joint which is integrated into the shell handle without projecting parts, so that the two shell parts when the shell handle is opened for changing the blade can no longer fall apart, which results in a significant improvement in the handling of the laying knife.
  • the design of the bowl handle with features according to the invention enables a larger one for holding the two handle parts together Knurled screw can be used, which protrudes with the edge on two sides approximately diametrically opposite to the axis of rotation of the knurled screw from the contour of the grip shell and can be grasped with the fingers of one hand.
  • Knurled screw makes it unnecessary to use tools when changing the blade, but on the other hand does not in any way interfere with the handling of the laying knife during use.
  • the detectable parts of the knurled screw are to be arranged approximately in the middle of the shell handle with respect to the axis of rotation of the screw and protrude from the shell handle on the side opposite the angle of attack.
  • the bowl handle is profiled on this side as a curved back, so that the knurled screw with its knurled edge can be pushed particularly easily over the floor or another solid base, the bowl handle being gripped with one hand.
  • the screw equipped with a knurled ring has a threaded pin which engages in a counter thread of a shell part.
  • the screw is freely rotatable, but axially immovable, so that the two shell parts can be screwed against one another by twisting the screw and can be braced or separated from one another in this way.
  • Another special feature of the laying knife according to the invention is that permanent magnets are arranged on the bottom of the magazine for the reserve blades and in the area of the holding training for the knife blade in the cutting position, through which the knife blades are on the one hand in the magazine and on the other hand in the holding device between the two handle shells are held and can only be removed from their respective position with little force.
  • the shell handle of the laying knife can be produced, for example, from plastic or in a manner known per se from aluminum or the like.
  • the division of the bowl handle lies approximately in a middle plane.
  • Both shell parts 1 and 2 have inner projections and corresponding recesses in the other part, so that the two shell parts 1 and 2 can be connected to one another so that they cannot move.
  • the handle shell is a relatively thick handle with approximately round, e.g. circular, elliptical or similarly profiled cross-sectional contours.
  • This handle formation 3 of the laying knife merges into a continuous widening 4 of its outer cross section at the free end.
  • the opposite end of the grip shell has known holding means 5 for a knife blade 6 shown with dash-dotted lines.
  • the one shell half 1 is designed with a particularly deep insert for the knife blade 6, so that the other shell part 2 engages a little in the die-like recess for the insert of the knife blade 6 in the other shell part 1 when the knife blade 6 is inserted. This results in a particularly secure clamping of the knife blade, which prevents incorrect clamping of the knife blade 6 and the risk of injury to the user.
  • This knife blade 6 is arranged with the cutting edge with respect to the theoretical central longitudinal axis 7 of the grip shell with a pre-attacking angle of attack. This angle of attack should be between 5 and 10 degrees, in particular between 5 and 8 degrees.
  • the two shell parts 1 and 2 are connected to one another at the free end by a hinge, which consists of a hinge pin 8 on one shell part 1 and a fork 9 overlapping them on the other shell part 2.
  • a hinge which consists of a hinge pin 8 on one shell part 1 and a fork 9 overlapping them on the other shell part 2.
  • the two shell parts in the vicinity of the holders for the knife blade 6 can be screwed together by a knurled screw 10, the head of which Example according to Figures 1 to 3 in which a part 2 is arranged retractable and the shaft can be screwed into a thread of the other part.
  • the knurled screw with its detectable head 10 is arranged in the recess 11 in such a way that it protrudes from the grip contour on two opposite sides, as can be clearly seen in FIG.
  • the head 10 of the knurled screw can be gripped and rotated with two fingers of one hand.
  • the forces to be exerted are sufficient for a secure screw connection of the two parts 1 and 2 of the grip shell.
  • the knurled screw 10 is provided approximately in the middle in a recess between the two shell parts 1 and 2.
  • This knurled screw 10 engages with its thread 15 in a mating thread of one shell part 1 and is freely rotatable, but axially immovable, in the other shell part 2 with the other end.
  • the knurled edge of the knurled screw 10 is guided out of the shell handle on one side or on both sides on opposite sides.
  • an exposed end face of the shaft of the knurled screw 10 is provided with a slot 16 or another comparable design for attaching a tool in order to be able to actuate the screw 10 using an auxiliary tool, if necessary.
  • This actuation of the screw can also take place by means of an actuating element corresponding to the example in FIG. 7.
  • This exemplary embodiment shows an actuator in the manner of a wing nut 17, which can be erected from a rest position sunk in a recess 18 and can then be grasped by hand to actuate the screw.
  • a wing nut 17 can be used instead of the slot 16 shown in FIG. 3 for the attachment of a screwdriver or the like in connection with a knurled edge on the screw 10, but also without this knurled edge.
  • the two shell parts 1 and 2 can be opened around the joint 8, 9, so that the knife blade 6 can be replaced.
  • Replacement blades are accommodated in a magazine 12 arranged inside the handle shell, in which the knife blades are arranged so that they can be clamped between two fingers and removed from the magazine.
  • a permanent magnet 13 is arranged on the bottom of the magazine 12, which attracts the steel reserve blades and holds them in position.
  • An identical permanent magnet 14 is provided in the area of the holding means 5 for the knife blade 6 in the cutting position, so that the knife blade 6 does not fall out of its position when the handle shell is opened. A small amount of force is required to remove the knife blade 6. Conversely, a new knife blade 6 is pulled into its holding position when inserted by the magnet 14, so that changing the knife blade is made considerably easier.

Claims (10)

1. Couteau de pose, en particulier couteau pour moquette destiné à couper des revêtements de sol, couteau constitué par une poignée en forme de coquille composée de plusieurs pièces et par une lame de coupe qui peut être serrée entre les parties de la coquille formant poignée et qui peuvent être reliées au moyen d'une vis, l'arête de coupe de la lame présentant un angle d'attaque par rapport à l'axe longitudinal de la poignée en forme de coquille, lesquelles parties de coquille renferment un magasin intérieur pour lames de rechange, et présentant à l'extérieur un contour de saisie, couteau caractérisé en ce que l'axe longitudinal de la lame de coupe (6) présente, par rapport à l'axe longitudinal médian (7) de la coquille de poignée, un faible angle d'attaque vers l'avant, qui est de 5 à 10 degrés, en particulier de 5 à 8 degrés, et en ce que la coquille de poignée présente dans la zone médiane une section transversale s'étendant sur une distance approximativement égale sur les axes d'une croix imaginaire de coordonnées, qui se prolonge, à l'extrémité opposée à la lame de coupe, par une section transversale extérieure (4) s'élargissant constamment dans tous les sens, en se raccordant à la surface (3) de saisie.
2. Couteau de pose selon la revendication 1, caractérisé en ce que la coquille de poignée est conformée, dans la zone (3) de saisie, avec des contours extérieurs de section transversale approximativement arrondis, et en ce que l'élargissement (4) constant de la section transversale extérieure de la coquille de poignée présente, à l'extrémité éloignée de la lame de coupe (6), des contours extérieurs de section transversale dont la forme se rapproche de celle d'un rectangle.
3. Couteau de pose selon les revendications 1 et 2, caractérisé en ce que les lames de coupe (6) sont disposées dans le magasin (12) à l'intérieur de la coquille de poignée, en étant debout sur un bord latéral, le bord latéral opposé étant dirigé vers le bord libre de la coquille de poignée quand celle-ci est ouverte.
4. Couteau de pose selon les revendications 1 à 3, caractérisé en ce que la coquille de poignée est constituée par deux parties (1, 2) de coquille, reliées entre elles par une articulation située du côté opposé à la lame de coupe.
5. Couteau de coupe selon les revendications 1 à 4, caractérisé en ce que les deux parties (1, 2) de coquille peuvent être reliées au moyen d'une vis moletée (10), disposée dans un évidement (11) d'une (2) des deux parties de coquille et dont le bord fait saillie du contour de la coquille en deux côtés, à peu près diamétralement opposés par rapport à l'axe de rotation de la vis moletée.
6. Couteau de pose selon la revendication 5, caractérisé en ce que les parties de la vis moletée (10) susceptibles d'être saisies sont disposées, par rapport à l'axe de rotation de la vis (10), approximativement au milieu de la poignée en forme de coquille et dépassent de la poignée en forme de coquille du côté opposé à l'angle d'attaque.
7. Couteau de pose selon les revendications 5 et 6, caractérisé en ce que la vis moletée (10) reliant les parties (1, 2) de coquille engrène par une tige filetée avec le taraudage d'une partie (1) de coquille et est montée dans l'autre partie (2) filetée d'une coquille de poignée en deux parties, de façon à pouvoir tourner librement, mais cependant à ne pas pouvoir se déplacer axialement.
8. Couteau de pose selon les revendications 5 à 7, caractérisé en ce que la vis moletée (10) présente, sur une surface frontale disposée de façon accessible, un moyen (16) de liaison avec un outil.
9. Couteau de pose selon les revendications 5 à 8, caractérisé en ce que la vis moletée (10) présente à une extrémité un organe d'actionnement (17) susceptible d'être redressé à partir d'une position de repos dans laquelle il est enfoncé ou noyé.
10. Couteau de pose selon les revendications 1 à 5, caractérisé en ce qu'un aimant permanent (13, 14) est disposé, dans chaque cas, dans le prolongement de maintien de la lame de coupe (6) de la coquille de poignée et dans le magasin (12) destiné à loger des lames de coupe de rechange.
EP86102027A 1985-03-27 1986-02-18 Couteau pour pose, en particulier couteau à tailler des tapis Expired EP0196437B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86102027T ATE45535T1 (de) 1985-03-27 1986-02-18 Verlegemesser, insbesondere teppichmesser.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3511091 1985-03-27
DE19853511091 DE3511091A1 (de) 1985-03-27 1985-03-27 Verlegemesser, insbesondere teppichmesser

Publications (3)

Publication Number Publication Date
EP0196437A2 EP0196437A2 (fr) 1986-10-08
EP0196437A3 EP0196437A3 (en) 1987-01-14
EP0196437B1 true EP0196437B1 (fr) 1989-08-16

Family

ID=6266474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102027A Expired EP0196437B1 (fr) 1985-03-27 1986-02-18 Couteau pour pose, en particulier couteau à tailler des tapis

Country Status (6)

Country Link
US (1) US4662070A (fr)
EP (1) EP0196437B1 (fr)
JP (1) JPS61226079A (fr)
AT (1) ATE45535T1 (fr)
CA (1) CA1260691A (fr)
DE (1) DE3511091A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19937140A1 (de) * 1999-07-03 2001-01-18 Ralf Merz Schneidmesser für Gipskartonplatten
USD624386S1 (en) 2009-02-12 2010-09-28 American Safety Razor Retractable blade knife

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US5940970A (en) * 1997-08-07 1999-08-24 Le-Jo Enterprises, Inc. Utility knife
DE19819915A1 (de) 1998-05-05 1999-11-11 Reddig Gmbh Verlegemesser
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US6182364B1 (en) 1998-09-01 2001-02-06 Thomas P. Reyburn Safety stock carton knife tip assembly and method of making
US6233830B1 (en) * 1999-05-07 2001-05-22 General Housewares Corporation Utility knife handle
US6449850B1 (en) 1999-08-13 2002-09-17 The Stanley Works Utility knife
US6865816B1 (en) * 1999-10-22 2005-03-15 Orcon Corporation Replaceable blade utility knife with magnetic actuator
AU2001251492A1 (en) * 2000-04-19 2001-11-07 General Housewares Corporation Utility knife having a magnet for retaining a blade
DE10049240C1 (de) * 2000-09-28 2002-06-27 Moritz Muehlebach Schneideinrichtung
US6574872B2 (en) 2001-05-04 2003-06-10 The Stanley Works Utility knife
US7340836B2 (en) * 2003-07-29 2008-03-11 Accurate Concepts, Inc. Hand tool for measuring and cutting
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GB0514654D0 (en) 2005-07-16 2005-08-24 Artex Rawlplug Ltd Cutter
US7389587B2 (en) * 2005-09-08 2008-06-24 Helen Of Troy Limited Utility knife
US8201336B2 (en) 2008-05-02 2012-06-19 Olympia Tools International, Inc. Retractable utility knife
US8695221B2 (en) 2008-08-21 2014-04-15 Wen Hao Utility knife with extended travel carriage
US8250767B1 (en) 2009-03-05 2012-08-28 Paul Ciccarella Tile knife apparatus
US10173334B2 (en) * 2013-05-03 2019-01-08 MagnoGrip Inc. Magnetic utility knife and holder
US10099261B1 (en) 2017-04-04 2018-10-16 John C Koch Scraper with wide scraping edge
US20180333870A1 (en) 2017-05-16 2018-11-22 Garland Industries, Inc. Utility Knife
USD871764S1 (en) 2018-02-22 2020-01-07 Andre A. Woolery Tool bag
DE202018106114U1 (de) 2018-10-25 2018-11-07 Jürgen Hoffmann Schneidhobel-Handwerkzeug
US11865735B2 (en) 2020-10-06 2024-01-09 Techtronic Cordless Gp Utility knife

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19937140A1 (de) * 1999-07-03 2001-01-18 Ralf Merz Schneidmesser für Gipskartonplatten
DE19937140C2 (de) * 1999-07-03 2001-09-27 Ralf Merz Schneidmesser für Gipskartonplatten
USD624386S1 (en) 2009-02-12 2010-09-28 American Safety Razor Retractable blade knife

Also Published As

Publication number Publication date
DE3511091C2 (fr) 1988-05-11
JPH0580238B2 (fr) 1993-11-08
CA1260691A (fr) 1989-09-26
EP0196437A2 (fr) 1986-10-08
ATE45535T1 (de) 1989-09-15
DE3511091A1 (de) 1986-10-09
US4662070A (en) 1987-05-05
JPS61226079A (ja) 1986-10-07
EP0196437A3 (en) 1987-01-14

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