EP0964774B1 - Heated cutting instrument - Google Patents

Heated cutting instrument Download PDF

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Publication number
EP0964774B1
EP0964774B1 EP98966523A EP98966523A EP0964774B1 EP 0964774 B1 EP0964774 B1 EP 0964774B1 EP 98966523 A EP98966523 A EP 98966523A EP 98966523 A EP98966523 A EP 98966523A EP 0964774 B1 EP0964774 B1 EP 0964774B1
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EP
European Patent Office
Prior art keywords
shaft
heated
cutting instrument
blade
heating element
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EP98966523A
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German (de)
French (fr)
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EP0964774A1 (en
Inventor
Norbert Feiler
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Feiler Carola
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Feiler Carola
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/22—Hand shears; Scissors combined with auxiliary implements, e.g. with cigar cutter, with manicure instrument
    • B26B13/24—Hand shears; Scissors combined with auxiliary implements, e.g. with cigar cutter, with manicure instrument to aid hair cutting

Definitions

  • the invention relates to a heated cutting instrument with at least one each heated by means of at least one heating element, the shaft Heating element with a regulating or control device for temperature adjustment is in operative connection.
  • Such a cutting instrument is already known from WO 92/00688. It is a heated pair of scissors, each with two blades a cutting edge, with each shear blade facing away from the cutting edge Provide side with a recess for receiving a heating wire is, which is approximately parallel over almost the entire length of the shaving blade the cutting edge extends. The shear blades can be placed over the heating wire be heated.
  • the heating wire is connected to a sensor-controlled Control device operated.
  • a cutting instrument with a blade is previously known from US Pat. No. 3,892,024. which has a cavity for receiving an electrical heating element having.
  • This blade can consist of two welded or glued together Parts to be made. In a preferred embodiment, the blade is in one piece executed. The cavity is manufactured using bending technology and the Blade welded on its edges. With this solution, it is problematic that both the two- and the one-piece blade in the area of severely stressed cutting edge has a weld or adhesive seam.
  • the invention is therefore based on the object of an improved heated To create cutting instrument, whose heating element is effective against each any external influence is protected.
  • This task is performed with a cutting instrument according to the characteristics of the Generically solved in that the heated shaft is integrally formed and a channel-like recess for the complete accommodation of a heating element has, which in the respective solid material of the shaft by means of a drilling-free process or a milling process incorporated and immediately in the area of a cutting edge or blade of the cutting instrument is arranged such that the heating element is completely accommodated within the shaft and the shaft in the area of the cutting edge or blade is free of Connecting seams is.
  • the heating element of the cutting instrument is thus completely different from the respective one Shaft enclosed.
  • the encapsulated heating element is hereby completely electrically insulated so that the cutting instrument is flowing Water can be cleaned. Any electrical short circuits or corrosion due to the effects of moisture are also excluded.
  • the fact that a recess for receiving the heating element is no longer required, the shaft of the cutting instrument points a completely flat surface so that cleaning is also possible is relieved. Any indentations that appear after a short use represent a preferred bacterial focus are at least for heating of the shaft not required.
  • By means of the internal heating of the Shaft is also an improved heat transfer and thus a higher Energy efficiency achieved.
  • the recess in the shaft suitable for holding a heating element is advantageously precisely manufactured using an electron erosion process.
  • the inventive one Scissors thereby also while maintaining the advantages mentioned be made that in the later shaft of the cutting instrument a groove is milled on the side facing away from the blade. This groove is then with a closure part leaving the channel-like Recess to close the heating element and that Closure part by means of a suitable connection technique, preferably Welding, assembled with the rest of the shaft part so that again the unity of the shaft is ensured.
  • This shaft piece is then machined such that the shaft is a blade or a cutting blade having.
  • This type of manufacture also allows one piece Prepare the shaft for holding a heating element without this would require drilling or seams in the future Cutting blade or blade area would have to be accepted.
  • the heating element in the shaft preferably parallel to the preferred direction the cutting edge is arranged, one results over the entire Length of the cutting edge approximately uniform heat distribution. This is for example in connection with the cauterization of hair when cutting hair significant.
  • the heated shaft has a Provide plastic cover. This makes cumbersome handling with protective gloves unnecessary. In further training of this configuration the plastic cover is detachably attached. As a result, any Plastic covers easy for basic cleaning of the cutting instrument be solved and from time to time completely for hygienic reasons be replaced.
  • a clip solution according to claim 5 enables a particularly simple one Cleaning the cutting instrument.
  • At least the shaft of the cutting instrument is made from the full material cut. This eliminates the usual forging process and thus the danger of embrittlement of the shaft material.
  • At least the shaft of the Cutting instrument is made of nickel-free material.
  • Another embodiment of the heated cutting instrument sees one Temperature sensor inside the shaft for a real comparison of the actual setpoint to be able to perform. This is a self-guided Temperature control for the cutting instrument implemented.
  • the heated scissors are with a ball bearing equipped at the crossing point.
  • Such scissors have proven to be special long-lasting, robust and above all proven to be smooth and durable.
  • the scissors have the required "bite”.
  • the ball bearing as such can advantageously be below the head of one Screw a screw-nut connection of the scissors housed his.
  • the handles of the heated scissors are advantageously in plastic half-shells added. As a result, the user is effective against burns protected on any heated metal handles. Furthermore, within the plastic half shells the power supply line of the respective Heating element be protected.
  • the heated cutting instrument shown in Fig. 1 is a pair of scissors 1, as is usually used by hairdressers.
  • the Scissors 1 includes two heated blades 8, each on the Transition the side of the scissors 1 facing away from the cutting edge into a handle 3.
  • the handle 3 consists essentially of a retaining eyelet 4 with a Plastic jacket 5.
  • the eyelets 4 can be at the same height or each other be staggered. Often there is an additional one on one of the retaining eyes 4 Finger rest molded on for the fingers not accommodated in the eyelet 4.
  • the shear blades 8 are connected by a hinge part 6, the fulcrum is marked by a screw 7.
  • the screw 7 connects the two Shear blades 8. By means of screw 7 there is also a ball-and-socket bearing attached.
  • the edge facing the other shear blade 8 of each shear blade 8 is designed as a cutting edge 10.
  • a recess 11 is provided in the shaft of the shear blade 8.
  • the recess 11 is according to the line shown in dashed lines in FIG. 1 in the region of the cutting edge 10 at least approximately parallel to the cutting edge 10.
  • a heating resistor 12 is added, with a Power supply line 13 is connected.
  • the power supply line 13 has one in the region of the joint part 6 Branch 14 on.
  • the Heating resistors 12 may be connected in series or in parallel.
  • the branch 14 supplies the heating resistors 12 via a only power supply line 13
  • the handle 3 with an external Cable 15 is connected to a current regulator.
  • the cable is over one Plug connection 17 releasably attached to the handle 3.
  • the shear blades 8 are heated via the heating resistors 12. To still be one to enable unproblematic handling of the scissors 1
  • the shaving blades 8 can be provided on the outside with a plastic cover.
  • the shear blades 8 according to FIG. 3 have a corresponding attachment Plastic cover recesses 16.
  • the plastic cover each has an essentially the corresponding shear blade 8 corresponding form.
  • the plastic covers have Holding lugs that releasably lock within the recesses 16. When the plastic cover is attached, there are burns on the heated ones Cutters 8 virtually impossible.
  • the shear blades 8 with their shaft 2 form with the handle 3 and the Articulated part 6 a half part 18.
  • the scissors 1 essentially consist of two half parts connected to each other by means of the screw 7.
  • Such a half part 18 is shown in FIG. 4.
  • the half part 18 points in the area of the transition from the blade 8 to the hinge part 6 a paragraph 20 on.
  • the paragraph 20 covers the end face facing the handle 3 of the scissors blade 8.
  • the heated scissors 1 described above need not necessarily be of an electron erosion process.
  • the shaft 2 is then with a closure piece again preferably with the recess 11 recessed closed by means of a weld outside the cutting blade area.
  • the then one-piece shaft piece is then used for production of the desired cutting blade is primarily machined.
  • a heating element 12 is then introduced into the recess 11, in each case is connected to a power supply line 13 from the open Paragraph 20 is brought out.
  • This power supply line 13 is now in the plastic jacket 5 of the handle 3 formed by half shells and connected to a connector 17.
  • the scissors 1 is then fully assembled.
  • the scissors 1 can then on the connector 17 and a cable 15 a current controller, not shown, can be connected.
  • the temperature is then set by regulating the current.
  • the temperature sensor detects the actual temperature value of the heated shear blade 8. This actual value is given to the heating resistors 12 supplying current regulator transmitted.
  • the current controller, the heating resistor 12 and the temperature sensor, not shown thus form a closed temperature control loop for the heated scissors 1.
  • the scissors 1 can be operated with a adjustable, almost constant operating temperature can be used.
  • the usual operating temperature of a scissors 1 heated in this way is for applications in the hairdressing area between 100 ° and 300 ° C.
  • the two half-parts 18 are connected by a screw-nut connection Area of the joint part 6 interconnected. At this point there is one Ball bearing 24 arranged according to FIG. 5.
  • the two half parts 18 are in the area of the joint part 6 by the screw 7 connected to each other.
  • the screw 7 is provided with a chamfer 21. As a result, it is rotatably connected to one of the two half parts 18.
  • the two half parts 18 are screwed together by means of a knurled nut 22.
  • the "bite" of the scissors 1 is adjustable by the knurled nut 22.
  • the knurled nut 22 is interposed with a Teflon disk 23 and the Ball bearing 24 connected to the screw 7.
  • the ball bearing 24 is seated under the screw head on one half part 18 and the Teflon washer 23 on the other half part 18 in contact with the knurled nut 22.
  • the heated scissors 1 is used in the hairdressing area for hair cutting. Melt the hair cut using scissors heated in this way due to the increased temperature at the cutting edge. The tips of the hair are cauterized. This means that the ends of the hair are sealed and thus the stress on the hair is reduced. The related clumping sometimes observed with the cautery of the hair the hair tips can be made using the exact and possible here over the entire Length of the shaving blade 2 constant temperature can be avoided. The hair ingredients remain due to this gentle cutting method receive. The hair cut in this way looks healthier and stays longer glittering. In addition, this is what is feared in hairdressing circles Counteracted split ends. Otherwise, at regular intervals necessary cutting of the hair tips can be omitted entirely or at least is only required at longer intervals.
  • the permanently extremely smooth-running scissors 1 due to the ball bearing can be easily cleaned under running water as all electrical installations are fully integrated in the blade 8.
  • the plastic covers are only clipped onto the recesses 16 and can Cleaning purposes easily solved and from time to time for hygienic reasons Time are exchanged in that in the area of the joint part 6 a Power branch 14 is provided, the scissors 1 of the invention can be operated with a single supply cable 15. This too is the handling of the scissors in question further facilitated.
  • the cutting edge 10 has the desired length over almost its entire length Target temperature. Any heat loss is only indirectly via the shaft 2 or the shaving blade 8 itself and is thus compared to a direct Heat radiation from an exposed heating element is significantly reduced.
  • the scissors 1 according to the invention can thus be highly energy efficient be heated.
  • Scissors 1 can also be used in conjunction with heated Blades, knives, combs or other cutting instruments used become. These objects can also be used with the described Electron erosion process in the area of a cutting edge 10 of a Comb a recess 11 in the respective shaft 2 for receiving a Heating resistor 12 are provided to take advantage of a uniform To achieve temperature distribution with high energy efficiency.
  • the production and function can be analogous to the scissors described above 1 done.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)
  • Details Of Cutting Devices (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Abstract

Heated cutting instruments are used in particular in the hairdressing field for cauterising and cutting hair. The previously known heated cutting instruments are fitted with exposed or only inadequately covered heating elements. Such cutting instruments are unsatisfactory or even questionable as regards hygiene and safety. The new heated cutting instrument is meant to improve safety and handling of such scissors. The disclosed heated cutting instrument (1) has at least one blade (2) with a recess (11) for receiving a heating element (12). The heating element (12) is entirely enclosed by the blade (2) and is therefore not accessible from the outside. The energy efficiency, heat distribution and safety of the cutting instrument (1) are thus considerably improved. Moreover, its handling is improved by the complete encapsulation of all current-conducting parts. The invention is useful in the field of hairdressing.

Description

Die Erfindung betrifft ein beheiztes Schneidinstrument mit wenigstens einem mit jeweils mittels wenigstens eines Heizelements beheizten Schaft, wobei das Heizelement mit einer Regel- oder Steuereinrichtung zur Temperatureinstellung in Wirkverbindung steht.The invention relates to a heated cutting instrument with at least one each heated by means of at least one heating element, the shaft Heating element with a regulating or control device for temperature adjustment is in operative connection.

Ein solches Schneidinstrument ist bereits aus der WO 92/00688 bekannt. Es handelt sich dabei um eine beheizte Schere, mit zwei Scherblättem mit jeweils einer Schneidkante, wobei jedes Scherblatt auf der der Schneidkante abgewandten Seite mit einer Vertiefung zur Aufnahme eines Heizdrahtes versehen ist, die sich nahezu über die gesamte Länge des Scherblattes annähernd parallel der Schneidkante erstreckt. Die Scherblätter können über den Heizdraht beheizt werden. Der Heizdraht wird in Verbindung mit einer sensorgesteuerten Regelvorrichtung betrieben.Such a cutting instrument is already known from WO 92/00688. It is a heated pair of scissors, each with two blades a cutting edge, with each shear blade facing away from the cutting edge Provide side with a recess for receiving a heating wire is, which is approximately parallel over almost the entire length of the shaving blade the cutting edge extends. The shear blades can be placed over the heating wire be heated. The heating wire is connected to a sensor-controlled Control device operated.

Da der Heizdraht bei dieser Schere in einer von außen frei zugänglichen Vertiefung angebracht ist, bedarf es entsprechender Abdeckungen, um eine elektrische Isolation und/oder einen Schutz gegen Verbrennungen zu schaffen. Im vorliegenden Falle wird die fragliche Schere überwiegend mit speziellen Schutzhandschuhen benutzt.Because the heating wire in these scissors in a recess freely accessible from the outside appropriate covers are required to an electrical To provide insulation and / or protection against burns. in the In the present case, the scissors in question are predominantly made with special ones Protective gloves used.

Aus dem US-Patent 3,892,024 ist ein Schneidinstrument mit einer Klinge vorbekannt, die einen Hohlraum zur Aufnahme eines elektrischen Heizelements aufweist. Diese Klinge kann aus zwei miteinander verschweißten oder verklebten Teilen gefertigt sein. In bevorzugter Ausführungsform ist die Klinge einstükkig ausgeführt. Dabei wird der Hohlraum in Biegetechnik hergestellt und die Klinge an ihren Kanten verschweißt. Bei dieser Lösung ist es problematisch, daß sowohl die zwei- als auch die einstückig hergestellte Klinge im Bereich der stark beanspruchten Schneidkante eine Schweiß- oder Klebenaht aufweist. A cutting instrument with a blade is previously known from US Pat. No. 3,892,024. which has a cavity for receiving an electrical heating element having. This blade can consist of two welded or glued together Parts to be made. In a preferred embodiment, the blade is in one piece executed. The cavity is manufactured using bending technology and the Blade welded on its edges. With this solution, it is problematic that both the two- and the one-piece blade in the area of severely stressed cutting edge has a weld or adhesive seam.

Hierdurch kann die Schneidkante einer derartigen Klinge nur schlecht geschliffen werden. Überdies sind schlanke Schneidkanten, die beispielsweise für Scheren wünschenswert sind, so gut wie ausgeschlossen.As a result, the cutting edge of such a blade can only be ground poorly become. In addition, there are slim cutting edges, which are suitable for Scissors are desirable, almost impossible.

Eine andere aus der DE-U 295 06 308 bekannte Lösung sieht deshalb zumindest eine teilweise Abdeckung der Scherblätter mittels entsprechend befestigbarer Kunststoffkörper vor. Zwischen den Scherblättem und den genannten Kunststoffkörpern ist eine Heizfolie zur Erhitzung der Scherblätter angeordnet. In den dabei zwischen Kunststoffkörper und Scherblatt entstehenden Zwischenraum kann jedoch leicht Feuchtigkeit eindringe, die früher oder später zu Funktionsstörungen der Schere führt.Another solution known from DE-U 295 06 308 therefore sees at least a partial cover of the shear blades by means of corresponding attachable Plastic body in front. Between the shear blades and the ones mentioned A heating foil for heating the shear blades is arranged in plastic bodies. In the space created between the plastic body and the shaving blade However, moisture can easily penetrate, which sooner or later leads to malfunctions the scissors are leading.

Aus dem US-Patent US 2 866 068 von Bernstein et al. ist überdies ein beheizbares Fleischermesser bekannt, bei dem ein Heizelement in eine Nut eingebracht ist, die von der der Schneide abgewandten Oberfäche des Schaftes in den Messerschaft gefräst wird, der anschließend mittels einer hitze- und feuchtigkeisbeständigen Harzkomponente oder mit einem entsprechenden Zement wieder verschlossen wird. Hierdurch ergeben sich im Schaftbereich Materialübergänge, die infolge möglicher thermischer Brücken Korrosionsvorgänge verursachen können. Die Übergangsbereiche stellen bevorzugte Ansatzpunkte für Feuchtigkeits und Verschmutzungsablagerungen dar.From U.S. Patent No. 2,866,068 to Bernstein et al. is also a heatable Butcher knife known in which a heating element is inserted into a groove is that of the surface of the shaft facing away from the cutting edge in the knife shank is milled, which is then heat and moisture resistant Resin component or with an appropriate cement is closed again. This results in material transitions in the shaft area, the corrosion processes due to possible thermal bridges can cause. The transition areas are preferred starting points for moisture and pollution deposits.

Der Erfindung liegt daher die Aufgabe zugrunde, ein verbessertes beheiztes Schneidinstrument zu schaffen, dessen Heizelement jeweils wirksam gegen etwaige Außeneinwirkung geschützt ist.The invention is therefore based on the object of an improved heated To create cutting instrument, whose heating element is effective against each any external influence is protected.

Diese Aufgabe wird bei einem Schneidinstrument gemäß den Merkmalen des Oberbegriffs dadurch gelost, daß der beheizte Schaft einstückig ausgebildet ist und eine kanalartige Aussparung zur vollständigen Aufnahme eines Heizelementes aufweist, die in das jeweilige Vollmaterial des Schaftes mittels eines bohrungsfreien Verfahrens oder eines Fräsverfahrens eingearbeitet und unmittelbar im Bereich einer Schneidkante oder Klinge des Schneidinstrumentes derart angeordnet ist, daß das Heizelement vollständig innerhalb Schaftes aufgenommen und der Schaft im Bereich der Schneidkante oder Klinge frei von Verbindungsnähten ist. This task is performed with a cutting instrument according to the characteristics of the Generically solved in that the heated shaft is integrally formed and a channel-like recess for the complete accommodation of a heating element has, which in the respective solid material of the shaft by means of a drilling-free process or a milling process incorporated and immediately in the area of a cutting edge or blade of the cutting instrument is arranged such that the heating element is completely accommodated within the shaft and the shaft in the area of the cutting edge or blade is free of Connecting seams is.

Das Heizelement des Schneidinstruments ist somit vollständig vom jeweiligen Schaft umschlossen. Das solcherart gekapselte Heizelement ist hierdurch vollständig elektrisch isoliert, so daß das Schneidinstrument unter fließendem Wasser gereinigt werden kann. Etwaig elektrische Kurzschlüsse oder Korrosionen infolge von Feuchtigkeitseinwirkungen sind gleichfalls ausgeschlossen. Dadurch, daß eine Vertiefung zur Aufnahme des Heizelementes nicht mehr benötigt wird, weist der Schaft des Schneidinstrumentes jeweils eine vollständig plane Oberfläche auf, so daß die Reinigung auch insoweit erleichtert ist. Etwaige Vertiefungen, die bereits nach kurzem Gebrauch einen bevorzugten Bakterienherd darstellen, sind zumindest für die Beheizung des Schaftes nicht erforderlich. Mittels der innenliegenden Heizung des Schaftes wird überdies ein verbesserter Wärmeübergang und somit eine höhere Energieeffizienz erzielt. Dadurch, daß die an der Schneidkante oder Zahnleiste benötigte Wärme nicht von der Außenseite des Schaftes zu einer entfernten Schneidkante oder Zahnleiste geführt werden muß, sondern das Heizelement bereits unmittelbar im Schaft selbst liegt, ergibt sich auch eine gleichmäßigere Temperaturverteilung über die gesamte Schneidkante oder Zahnleiste des Schneidinstrumentes. Die Einarbeitung der kanalartigen Aussparung in das Vollmaterial verhindert, daß etwaige Kleb- oder Schweißnähte im Bereich der Schneidkante angeordnet sind. Es ist vielmehr überhaupt keine Nahtverbindung erforderlich.The heating element of the cutting instrument is thus completely different from the respective one Shaft enclosed. The encapsulated heating element is hereby completely electrically insulated so that the cutting instrument is flowing Water can be cleaned. Any electrical short circuits or corrosion due to the effects of moisture are also excluded. The fact that a recess for receiving the heating element is no longer required, the shaft of the cutting instrument points a completely flat surface so that cleaning is also possible is relieved. Any indentations that appear after a short use represent a preferred bacterial focus are at least for heating of the shaft not required. By means of the internal heating of the Shaft is also an improved heat transfer and thus a higher Energy efficiency achieved. The fact that at the cutting edge or Toothed strip does not need heat from the outside of the shaft to one removed cutting edge or rack, but that Heating element already lies directly in the shaft itself, there is also one more even temperature distribution over the entire cutting edge or Toothed strip of the cutting instrument. Incorporation of the channel-like recess in the solid material prevents any glue or weld seams are arranged in the region of the cutting edge. Rather, it is at all no seam connection required.

Vorteilhafte Ausgestaltungen der Erfindung sind gemäß den abhängigen Ansprüchen 2 bis 13 gegeben.Advantageous embodiments of the invention are in accordance with the dependent claims Given 2 to 13.

Die zur Aufnahme eines Heizelementes geeignete Aussparung des Schaftes ist vorteilhaft mittels eines Elektronenerosionsverfahrens präzise gefertigt.The recess in the shaft suitable for holding a heating element is advantageously precisely manufactured using an electron erosion process.

Anstelle des recht aufwendigen Elektronenerosionsverfahrens kann die erfindungsgemäße Schere unter Wahrung der erwähnten Vorteile auch dadurch hergestellt werden, daß in den späteren Schaft des Schneidinstrumentes auf der Klinge abgewandten Seite eine Nut gefräst wird. Diese Nut wird anschließend mit einem Verschlußteil unter Freilassung der kanalartigen Aussparung zur Aufnahme des Heizelementes wieder verschlossen und das Verschlußteil mittels einer geeigneten Verbindungstechnik, vorzugsweise Schweißen, mit dem übrigen Schaftteil derart zusammengefügt, daß wieder die Einstückigkeit des Schaftes gewahrt ist. Dieses Schaftstück wird anschließend derart bearbeitet, daß der Schaft eine Klinge oder ein Schneidblatt aufweist. Diese Art der Fertigung erlaubt es gleichfallls, einen einstückigen Schaft zur Aufnahme eines Heizelementes vorzubereiten, ohne daß hierfür Bohrungen erforderlich wären oder Verbindungsnähte im späteren Schneidblatt oder Klingenbereich hingenommen werden müßten.Instead of the rather complex electron erosion process, the inventive one Scissors thereby also while maintaining the advantages mentioned be made that in the later shaft of the cutting instrument a groove is milled on the side facing away from the blade. This groove is then with a closure part leaving the channel-like Recess to close the heating element and that Closure part by means of a suitable connection technique, preferably Welding, assembled with the rest of the shaft part so that again the unity of the shaft is ensured. This shaft piece is then machined such that the shaft is a blade or a cutting blade having. This type of manufacture also allows one piece Prepare the shaft for holding a heating element without this would require drilling or seams in the future Cutting blade or blade area would have to be accepted.

Dadurch, daß das Heizelement im Schaft vorzugsweise parallel der Vorzugsrichtung der Schneidkante angeordnet ist, ergibt sich eine über die gesamte Länge der Schneidkante annähernd gleichmäßige Wärmeverteilung. Dies ist beispielsweise in Verbindung mit dem Kauterisieren von Haaren beim Haareschneiden von Bedeutung.Characterized in that the heating element in the shaft preferably parallel to the preferred direction the cutting edge is arranged, one results over the entire Length of the cutting edge approximately uniform heat distribution. This is for example in connection with the cauterization of hair when cutting hair significant.

In vorteilhafter Ausgestaltung der Erfindung ist der beheizte Schaft mit einer Kunststoffabdeckung versehen. Hierdurch wird das umständliche Hantieren mit Schutzhandschuhen überflüssig. In Weiterbildung dieser Ausgestaltung ist die Kunststoffabdeckung jeweils lösbar befestigt. Hierdurch können etwaige Kunststoffabdeckungen leicht zur Grundreinigung des Schneidinstruments gelöst werden und von Zeit zu Zeit aus hygienischen Gründen vollständig ausgetauscht werden.In an advantageous embodiment of the invention, the heated shaft has a Provide plastic cover. This makes cumbersome handling with protective gloves unnecessary. In further training of this configuration the plastic cover is detachably attached. As a result, any Plastic covers easy for basic cleaning of the cutting instrument be solved and from time to time completely for hygienic reasons be replaced.

Eine Clipslösung gemäß Anspruch 5 ermöglicht eine besonders einfache Reinigung des Schneidinstrumentes. A clip solution according to claim 5 enables a particularly simple one Cleaning the cutting instrument.

Zumindest der Schaft des Schneidinstruments wird aus dem vollen Material geschnitten. Hierdurch entfällt der sonst übliche Schmiedevorgang und damit die Gefahr einer Versprödung des Schaftmaterials.At least the shaft of the cutting instrument is made from the full material cut. This eliminates the usual forging process and thus the danger of embrittlement of the shaft material.

Insbesondere für Allergiker ist es von Vorteil, daß wenigstens der Schaft des Schneidinstrumentes jeweils aus nickelfreiem Material gefertigt ist.It is particularly advantageous for allergy sufferers that at least the shaft of the Cutting instrument is made of nickel-free material.

Eine weitere Ausgestaltung des beheizten Schneidinstrumentes sieht einen Temperatursensor innerhalb des Schaftes vor, um einen echten Ist-Sollwertvergleich durchführen zu können. Hierdurch ist eine selbstgeführte Temperaturregelung für das Schneidinstrument verwirklicht.Another embodiment of the heated cutting instrument sees one Temperature sensor inside the shaft for a real comparison of the actual setpoint to be able to perform. This is a self-guided Temperature control for the cutting instrument implemented.

Als erfindungsgemäßes Schneidinstrument kommen insbesondere beheizte Scheren in Betracht, wobei in vorteilhafter Ausgestaltung das gesamte Halbteil der Schere aus dem Vollen geschnitten ist.Heated in particular come as the cutting instrument according to the invention Scissors into consideration, with the entire in an advantageous embodiment Half of the scissors is cut from the solid.

In vorteilhafter Ausgestaltung sind die beheizten Scheren mit einem Kugellager im Kreuzungspunkt ausgestattet. Derartige Scheren haben sich als besonders langlebig, robust und vor allem als dauerhaft leichtgängig erwiesen. Die Schere weist den erforderlichen "Biß" auf.In an advantageous embodiment, the heated scissors are with a ball bearing equipped at the crossing point. Such scissors have proven to be special long-lasting, robust and above all proven to be smooth and durable. The scissors have the required "bite".

Das Kugellager als solches kann vorteilhaft unterhalb des Kopfes einer Schraube einer Schrauben-Mutter-Verbindung der Schere untergebracht sein.The ball bearing as such can advantageously be below the head of one Screw a screw-nut connection of the scissors housed his.

Die Griffstücke der beheizten Schere sind mit Vorteil in Kunststoffhalbschalen aufgenommen. Hierdurch ist der Benutzer wirksam vor Verbrennungen an den sich etwaig erhitzenden Metallgriffstücken geschützt. Ferner kann innerhalb der Kunststoffhalbschalen die Stromversorgungsleitung des jeweiligen Heizelementes geschützt geführt sein. The handles of the heated scissors are advantageously in plastic half-shells added. As a result, the user is effective against burns protected on any heated metal handles. Furthermore, within the plastic half shells the power supply line of the respective Heating element be protected.

Die Erfindung wird nachstehend anhand eines nur schematisch dargestellten Ausführungsbeispiels in der Zeichnung erläutert. Es zeigen in schematischer Darstellung:

Fig. 1
eine Schere in einer Draufsicht
Fig. 2
einen nicht maßstäblichen Querschnitt entlang der Schnittlinie II-II in Fig. 1 und
Fig. 3
ein nicht maßstäblich dargestelltes Scherenblatt der in Fig. 1 dargestellten Schere.
Fig. 4
ein Halbteil einer Schere in einer Draufsicht und
Fig. 5
eine Explosionsdarstellung einer Schrauben-Mutter-Verbindung im Gelenkteil der Schere.
The invention is explained below with reference to an embodiment shown only schematically in the drawing. In a schematic representation:
Fig. 1
a pair of scissors in a top view
Fig. 2
a cross-section not to scale along the section line II-II in Fig. 1 and
Fig. 3
a scissor blade not shown to scale of the scissors shown in Fig. 1.
Fig. 4
a half of a pair of scissors in a top view and
Fig. 5
an exploded view of a screw-nut connection in the joint part of the scissors.

Bei dem in Fig. 1 gezeigten beheizten Schneidinstrument handelt es sich um eine Schere 1, wie sie von Friseuren üblicherweise verwendet wird. Die Schere 1 umfaßt zwei beheizte Scherblätter 8, die jeweils auf der der Schneidseite abgewandten Seite der Schere 1 in ein Griffstück 3 übergehen. Das Griffstück 3 besteht im wesentlichen aus einer Halteöse 4 mit einem Kunststoffmantel 5. Die Halteösen 4 können auf gleicher Höhe oder einander versetzt angeordnet sein. Oftmals ist an eine der Halteösen 4 zusätzlich eine Fingerablage für die nicht in der Öse 4 aufgenommenen Finger angeformt. Die Scherblätter 8 sind durch ein Gelenkteil 6 verbunden, dessen Drehpunkt von einer Schraube 7 markiert wird. Die Schraube 7 verbindet die beiden Scherblätter 8. Mittels der Schraube 7 ist zusätzlich eine Kugel-Gelenklagerung befestigt. Die dem jeweils anderen Scherblatt 8 zugewandte Kante eines jeden Scherblattes 8 ist als Schneidkante 10 ausgebildet.The heated cutting instrument shown in Fig. 1 is a pair of scissors 1, as is usually used by hairdressers. The Scissors 1 includes two heated blades 8, each on the Transition the side of the scissors 1 facing away from the cutting edge into a handle 3. The handle 3 consists essentially of a retaining eyelet 4 with a Plastic jacket 5. The eyelets 4 can be at the same height or each other be staggered. Often there is an additional one on one of the retaining eyes 4 Finger rest molded on for the fingers not accommodated in the eyelet 4. The shear blades 8 are connected by a hinge part 6, the fulcrum is marked by a screw 7. The screw 7 connects the two Shear blades 8. By means of screw 7 there is also a ball-and-socket bearing attached. The edge facing the other shear blade 8 of each shear blade 8 is designed as a cutting edge 10.

Wie aus der Querschnittsdarstellung in Fig. 2 deutlich wird, ist im Schaft 2 des Scherblattes 8 eine Aussparung 11 vorgesehen. Die Aussparung 11 ist gemäß der in Fig. 1 gestrichelt dargestellten Linie im Bereich der Schneidkante 10 zumindest annähernd parallel der Schneidkante 10 angeordnet. In der Aussparung 11 ist ein Heizwiderstand 12 aufgenommen, der mit einer Stromversorgungsleitung 13 verbunden ist.As is clear from the cross-sectional illustration in FIG. 2, there is 2 in the shaft of the shear blade 8, a recess 11 is provided. The recess 11 is according to the line shown in dashed lines in FIG. 1 in the region of the cutting edge 10 at least approximately parallel to the cutting edge 10. In the recess 11, a heating resistor 12 is added, with a Power supply line 13 is connected.

Die Stromversorgungsleitung 13 weist im Bereich des Gelenkteils 6 eine Verzweigung 14 auf. Je nach Beschaltung der Verzweigung 14 können die Heizwiderstände 12 in Reihe oder parallel geschaltet sein. Jedenfalls ermöglicht die Verzweigung 14 die Versorgung der Heizwiderstände 12 über eine einzige Stromversorgungsleitung 13, die über das Griffstück 3 mit einem externen Kabel 15 mit einem Stromregler verbunden ist. Das Kabel ist über eine Steckverbindung 17 lösbar am Griffstück 3 befestigt.The power supply line 13 has one in the region of the joint part 6 Branch 14 on. Depending on the wiring of branch 14, the Heating resistors 12 may be connected in series or in parallel. In any case, made possible the branch 14 supplies the heating resistors 12 via a only power supply line 13, the handle 3 with an external Cable 15 is connected to a current regulator. The cable is over one Plug connection 17 releasably attached to the handle 3.

Die Scherblätter 8 über die Heizwiderstände 12 beheizt. Um dennoch eine unproblematische Handhabung der Schere 1 zu ermöglichen, können die Scherblätter 8 außenseitig mit einer Kunststoffabdeckung versehen sein. Hierzu weisen die Scherblätter 8 gemäß Fig. 3 zur Befestigung einer entsprechenden Kunststoffabdeckung Ausnehmungen 16 auf. Die Kunststoffabdeckung hat jeweils eine im wesentlichen dem korrespondierenden Scherblatt 8 entsprechende Form. Darüber hinaus weisen die Kunststoffabdeckungen Haltenasen auf, die innerhalb der Ausnehmungen 16 lösbar verrasten. Bei aufgesteckter Kunststoffabdeckung sind Verbrennungen an den erhitzten Scherblättern 8 quasi ausgeschlossen. The shear blades 8 are heated via the heating resistors 12. To still be one to enable unproblematic handling of the scissors 1 The shaving blades 8 can be provided on the outside with a plastic cover. For this purpose, the shear blades 8 according to FIG. 3 have a corresponding attachment Plastic cover recesses 16. The plastic cover each has an essentially the corresponding shear blade 8 corresponding form. In addition, the plastic covers have Holding lugs that releasably lock within the recesses 16. When the plastic cover is attached, there are burns on the heated ones Cutters 8 virtually impossible.

Nachstehend wird die Herstellung und Funktion der beheizten Schere 1 erläutert:The manufacture and function of the heated scissors 1 is explained below:

Die Scherblätter 8 mit ihrem Schaft 2 bilden mit dem Griffstück 3 und dem Gelenkteil 6 ein Halbteil 18. Die Schere 1 besteht im wesentlichen aus zwei mittels der Schraube 7 miteinander verbundenen Halbteilen 18. Die Halbteile 18 werden, vorzugsweise mittels eines CNC-Verfahrens, aus dem Vollen gefräst. Ein derartiges Halbteil 18 ist in Fig. 4 gezeigt. Das Halbteil 18 weist im Bereich des Überganges vom Scherblatt 8 zum Gelenkteil 6 einen Absatz 20 auf. Der Absatz 20 überdeckt die dem Griffstück 3 zugewandte Stirnseite des Scherenblattes 8.The shear blades 8 with their shaft 2 form with the handle 3 and the Articulated part 6 a half part 18. The scissors 1 essentially consist of two half parts connected to each other by means of the screw 7. The half parts 18, preferably by means of a CNC process, from the solid milled. Such a half part 18 is shown in FIG. 4. The half part 18 points in the area of the transition from the blade 8 to the hinge part 6 a paragraph 20 on. The paragraph 20 covers the end face facing the handle 3 of the scissors blade 8.

Zur Herstellung der kanalartigen Aussparung 11 im Scherenblatt 8 wird nun das Halbteil 18 eingespannt und seitens des Absatzes 20 einem Elektronenstrahl ausgesetzt. Mittels dieses Elektronenstrahls wird in einem Elektronenerosionsverfahren vom Absatz 20 her die Aussparung 11 in das Scherblatt 8 geschnitten. Die Präzision des Elektronenerosionsverfahrens erlaubt es dabei, die Aussparung 11 bis zu einer gewünschten Tiefe voranzutreiben und dabei präzise die in Fig. 1 gestrichelt dargestellte Anordnung der Aussparung 11 vorzusehen. Selbstredend können analog auch andere Anordnungen realisiert werden.To produce the channel-like recess 11 in the scissor blade 8 is now the half part 18 clamped and on the part of the paragraph 20 an electron beam exposed. This electron beam is used in an electron erosion process from paragraph 20, the recess 11 in the shaving blade 8 cut. The precision of the electron erosion process allows it while driving the recess 11 to a desired depth and precise the arrangement of the recess shown in dashed lines in Fig. 1 11 to be provided. Of course, other arrangements can also be implemented analogously become.

Die vorstehend beschriebene beheizte Schere 1 muß nicht zwingend mittels eines Elektronenerosionsverfahrens hergestellt werden. Als wirtschaftlich durchaus praktikable und fertigungstechnisch sogar überlegene Lösung hat es sich erwiesen, die kanalartige Aussparung 11 zur Aufnahme des Heizelementes 12 in den Schaft 2 von der Schneidkante 8 abgewandten Seite in den Schaft 2 zu fräsen. Der Schaft 2 wird anschließend mit einem Verschlußstück unter Aussparung der Ausnehmung 11 wieder vorzugsweise mittels einer Schweißnaht außerhalb des Schneidblattbereiches verschlossen. Das dann wiederum einstückige Schaftstück wird dann zur Herstellung des gewünschten Schneidblattes in erster Linie spanend bearbeitet.The heated scissors 1 described above need not necessarily be of an electron erosion process. As economical has a practicable and technically superior solution it turned out, the channel-like recess 11 for receiving the heating element 12 in the shaft 2 from the side facing away from the cutting edge 8 in to mill the shaft 2. The shaft 2 is then with a closure piece again preferably with the recess 11 recessed closed by means of a weld outside the cutting blade area. The then one-piece shaft piece is then used for production of the desired cutting blade is primarily machined.

Neben dem Elektronenerosionsverfahren und der erläuterten weiteren Fertigungsmethode sind grundsätzlich alle Fertigungsmethoden denkbar und Gegenstand der Erfindung, die es gestatten bohrungsfrei unter Verzicht von Verbindungsnähten und unter Wahrung der Einstückigkeit des Schaftes 2, eine zur Aufnahme des Heizelementes 12 geeignete Aussparung 11 an geeigneter Stelle zu schaffen.In addition to the electron erosion process and the explained further manufacturing method basically all manufacturing methods are conceivable and subject of the invention, which allow drilling without dispensing with Connecting seams and while maintaining the unity of the shaft 2, a recess 11 suitable for receiving the heating element 12 on a suitable one Job.

In die Aussparung 11 wird dann ein Heizelement 12 eingebracht, das jeweils mit einer Stromversorgungsleitung 13 verbunden ist, die aus dem geöffneten Absatz 20 herausgeführt ist. Diese Stromversorgungsleitung 13 wird nun in den von Halbschalen gebildeten Kunststoffmantel 5 des Griffstücks 3 aufgenommen und mit einer Steckverbindung 17 verbunden. Die Schere 1 ist dann vollständig montiert.A heating element 12 is then introduced into the recess 11, in each case is connected to a power supply line 13 from the open Paragraph 20 is brought out. This power supply line 13 is now in the plastic jacket 5 of the handle 3 formed by half shells and connected to a connector 17. The scissors 1 is then fully assembled.

Die Schere 1 kann dann über die Steckverbindung 17 und ein Kabel 15 an einen nicht dargestellten Stromregler angeschlossen werden. Die Temperatur wird dann mittels der Regelung der Stromstärke eingestellt.The scissors 1 can then on the connector 17 and a cable 15 a current controller, not shown, can be connected. The temperature is then set by regulating the current.

Zusätzlich ist in der Aussparung 11 oder an anderer Stelle ein Temperatursensor befestigt. Der Temperatursensor erfaßt den Temperatur-Ist-Wert des beheizten Scherblattes 8. Dieser Ist-Wert wird an den die Heizwiderstände 12 versorgenden Stromregler übermittelt.In addition, there is a temperature sensor in the recess 11 or elsewhere attached. The temperature sensor detects the actual temperature value of the heated shear blade 8. This actual value is given to the heating resistors 12 supplying current regulator transmitted.

Der Stromregler, der Heizwiderstand 12 und der nicht dargestellte Temperatursensor bilden somit einen geschlossenen Temperaturregelkreis für die beheizte Schere 1. Mittels dieses Regelkreises kann die Schere 1 mit einer einstellbaren, nahezu konstanten Betriebstemperatur benutzt werden. Die übliche Betriebstemperatur einer derartig beheizten Schere 1 liegt für Anwendungen im Friseurbereich zwischen 100° und 300° C.The current controller, the heating resistor 12 and the temperature sensor, not shown thus form a closed temperature control loop for the heated scissors 1. Using this control loop, the scissors 1 can be operated with a adjustable, almost constant operating temperature can be used. The The usual operating temperature of a scissors 1 heated in this way is for applications in the hairdressing area between 100 ° and 300 ° C.

Die beiden Halbteile 18 sind durch eine Schrauben-Mutter-Verbindung im Bereich des Gelenkteils 6 miteinander verbunden. An dieser Stelle ist eine Kugellagerung 24 gemäß Fig. 5 angeordnet.The two half-parts 18 are connected by a screw-nut connection Area of the joint part 6 interconnected. At this point there is one Ball bearing 24 arranged according to FIG. 5.

Die beiden Halbteile 18 sind im Bereich des Gelenkteils 6 durch die Schraube 7 miteinander verbunden. Die Schraube 7 ist mit einer Anfasung 21 versehen. Hierdurch ist sie mit einem der beiden Halbteile 18 drehfest verbunden. Die Verschraubung der beiden Halbteile 18 erfolgt mittels einer Rändelmutter 22. Durch die Rändelmutter 22 ist der "Biß" der Schere 1 einstellbar.The two half parts 18 are in the area of the joint part 6 by the screw 7 connected to each other. The screw 7 is provided with a chamfer 21. As a result, it is rotatably connected to one of the two half parts 18. The two half parts 18 are screwed together by means of a knurled nut 22. The "bite" of the scissors 1 is adjustable by the knurled nut 22.

Die Rändelmutter 22 ist unter Zwischenlage einer Teflonscheibe 23 und des Kugellagers 24 mit der Schraube 7 verbunden. Dabei sitzt das Kugellager 24 unter dem Schraubenkopf auf dem einen Halbteil 18 und die Teflonscheibe 23 auf dem anderen Halbteil 18 in Anlage an die Rändelmutter 22.The knurled nut 22 is interposed with a Teflon disk 23 and the Ball bearing 24 connected to the screw 7. The ball bearing 24 is seated under the screw head on one half part 18 and the Teflon washer 23 on the other half part 18 in contact with the knurled nut 22.

Die beheizte schere 1 wird im Friseurbereich zum Haareschneiden eingesetzt. Die mittels einer derart erhitzten Schere geschnittenen Haare schmelzen aufgrund der erhöhten Temperatur an der Schnittkante. Die Haarspitzen werden kauterisiert. Dies bedeutet, daß die Haarspitzen versiegelt werden und somit die Beanspruchung der Haare reduziert wird. Die im Zusammenhang mit dem Kauterisieren der Haare zuweilen beobachtete Verklumpung der Haarspitzen kann mittels des hier möglichen exakten und über die gesamte Länge des Scherblattes 2 konstanten Temperatur vermieden werden. Die Haarinhaltsstoffe bleiben aufgrund dieser schonenden Schnittmethode erhalten. Das derart geschnittene Haar wirkt gesünder und bleibt länger glänzend. Darüber hinaus wird hierdurch dem in Friseurkreisen befürchteten Haarspliss entgegengewirkt. Das ansonsten in regelmäßigen Abständen notwendige Schneiden der Haarspitzen kann gänzlich entfallen oder ist zumindest nur in größeren Zeitabständen erforderlich.The heated scissors 1 is used in the hairdressing area for hair cutting. Melt the hair cut using scissors heated in this way due to the increased temperature at the cutting edge. The tips of the hair are cauterized. This means that the ends of the hair are sealed and thus the stress on the hair is reduced. The related clumping sometimes observed with the cautery of the hair the hair tips can be made using the exact and possible here over the entire Length of the shaving blade 2 constant temperature can be avoided. The hair ingredients remain due to this gentle cutting method receive. The hair cut in this way looks healthier and stays longer glittering. In addition, this is what is feared in hairdressing circles Counteracted split ends. Otherwise, at regular intervals necessary cutting of the hair tips can be omitted entirely or at least is only required at longer intervals.

Die aufgrund des Kugellagers dauerhaft extrem leichtgängige Schere 1 kann problemlos unter fließendem Wasser gereinigt werden, da sämtliche Elektroinstallationen vollständig im Scherblatt 8 integriert sind. Die Kunststoffabdeckungen sind an den Ausnehmungen 16 nur eingeclipst und können zu Reinigungszwecken leicht gelöst und aus hygienischen Gründen von Zeit zu Zeit ausgetauscht werden Dadurch, daß im Bereich des Gelenkteils 6 eine Stromverzweigung 14 vorgesehen ist, kann die erfindungsgemäße Schere 1 mit einem einzigen Zuleitungskabel 15 betrieben werden. Auch hierdurch ist die Handhabung der fraglichen Schere weiter erleichtert.The permanently extremely smooth-running scissors 1 due to the ball bearing can can be easily cleaned under running water as all electrical installations are fully integrated in the blade 8. The plastic covers are only clipped onto the recesses 16 and can Cleaning purposes easily solved and from time to time for hygienic reasons Time are exchanged in that in the area of the joint part 6 a Power branch 14 is provided, the scissors 1 of the invention can be operated with a single supply cable 15. This too is the handling of the scissors in question further facilitated.

Dadurch, daß die Heizwiderstände 12 im Schaft 2 angeordnet sind, wir die gesamte vom Heizwiderstand 12 abgegebene Wärme vom Scherblatt 8 aufgenommen, weitergeleitet und im Bereich der Schneidkante 10 abgestrahlt Die Schneidkante 10 weist nahezu über ihre gesamte Länge die gewünschte Solltemperatur auf. Etwaige Verlustwärme wird nur mittelbar über den Schaft 2 oder das Scherblatt 8 selbst abgegeben und ist somit gegenüber einer direkten Wärmeabstrahlung an einem freiliegenden Heizelement deutlich vermindert. Die erfindungsgemäße Schere 1 kann somit mit einer hohen Energieeffizienz beheizt werden.The fact that the heating resistors 12 are arranged in the shaft 2, we total heat given off by the heating resistor 12 absorbed by the shear blade 8, forwarded and emitted in the area of the cutting edge 10 The cutting edge 10 has the desired length over almost its entire length Target temperature. Any heat loss is only indirectly via the shaft 2 or the shaving blade 8 itself and is thus compared to a direct Heat radiation from an exposed heating element is significantly reduced. The scissors 1 according to the invention can thus be highly energy efficient be heated.

Die für das Ausführungsbeispiel vorstehend aufgezählten Vorteile einer beheizten Schere 1 können ohne weiteres auch in Verbindung mit beheizten Klingen, Messern, Kämmen oder sonstigen Schneidinstrumenten genutzt werden. Auch bei diesen Gegenständen kann mittels des beschriebenen Elektronenerosionsverfahrens im Bereich einer Schneidkante 10 eines Kamms eine Aussparung 11 im jeweiligen Schaft 2 zur Aufnahme eines Heizwiderstandes 12 vorgesehen werden, um die Vorteile einer gleichmäßigen Temperaturverteilung bei hoher Energieeffizienz zu erreichen. Die Herstellung und Funktion kann dabei analog zu der oben beschriebenen Schere 1 erfolgen.The advantages of a heated one enumerated above for the exemplary embodiment Scissors 1 can also be used in conjunction with heated Blades, knives, combs or other cutting instruments used become. These objects can also be used with the described Electron erosion process in the area of a cutting edge 10 of a Comb a recess 11 in the respective shaft 2 for receiving a Heating resistor 12 are provided to take advantage of a uniform To achieve temperature distribution with high energy efficiency. The production and function can be analogous to the scissors described above 1 done.

Claims (12)

  1. A heated cutting instrument having at least one heated shaft (2) heated by means of at least one heating element (12), whereby the heating element (12) is connected to a regulating or control device for adjusting temperature, characterised in that the heated shaft (2) is designed monobloc and exhibits a channel-like recess for fully accommodating a heating element (12), said recess being machined into the respective solid material of the shaft by means of a bore-free procedure or a milling procedure and arranged directly in the vicinity of a cutting edge (10) or blade of the cutting instrument (1), whereby the heating element is taken up fully inside the shaft and in the vicinity of the cutting edge or blade the shaft is free from connecting seams.
  2. Heated cutting instrument as claimed in Claim 1 wherein the recess (11) suitable for accommodating a heating element (12) is built into the solid material of the shaft (2) by means of an electronic erosion process.
  3. Heated cutting instrument as claimed in Claim 1, characterised in that a groove is milled into the shaft on the side averted from the cutting edge (10) or blade, which is locked by a locking component while leaving the channel-like recess, whereby the locking component is attached to the remaining shaft or blade by means of a suitable connection technique.
  4. Heated cutting instrument as claimed in any one of the foregoing claims, each heated shaft (2) is respectively provided with a preferably loose synthetic covering.
  5. Heated cutting instrument as claimed in Claim 4, characterised in that each heated shaft (2) is provided with at least two recesses (16) which are arranged on opposite edges of the shaft (2) and in that each synthetic covering exhibits corresponding holding lugs which are snap-locked into the recesses (16).
  6. Heated cutting instrument as claimed in any one of the foregoing claims, characterised in that at least the shaft (2) cut from the solid block is preferably milled.
  7. Heated cutting instrument as claimed in Claim 6, characterised in that at least the shaft (2) is manufactured from nickel-free material, preferably from metal.
  8. Heated cutting instrument as claimed in any one of the foregoing claims, characterised in that the regulating and control device for adjusting temperature is connected to a temperature sensor for detecting an actual temperature value integrated in the shaft (2).
  9. Heated cutting instrument as claimed in any one of the foregoing claims, characterised in that the cutting instrument is shears and the shears essentially comprise two half parts (18) each of which comprises a handle part (3), a hinged part (6) and a shearing blade (8) with the shaft (2), whereby the entire half part (18) is cut monobloc from the solid block and is preferably milled.
  10. Heated cutting instrument as claimed in Claim 9, characterised in that a hinged ball bearing (7, 21, 22, 23, 24) of the half part (18) is provided in the hinged art (6).
  11. Heated cutting instrument as claimed in Claim 10, characterised in that the ball bearing joint includes a nut connection, whereby a ball bearing (24) is arranged underneath the head of said connection.
  12. Heated cutting instrument as claimed in any one of foregoing Claims 9 to 11, characterised in that each of the handles (3) of the shears (1) is taken up in synthetic shells attached to one another, whereby supply mains (13) may also be contained in these synthetic shells to supply the heating element (12).
EP98966523A 1997-12-06 1998-12-05 Heated cutting instrument Expired - Lifetime EP0964774B1 (en)

Applications Claiming Priority (3)

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DE19754253 1997-12-06
DE19754253A DE19754253C1 (en) 1997-12-06 1997-12-06 Heated cutting instrument
PCT/DE1998/003630 WO1999029476A1 (en) 1997-12-06 1998-12-05 Heated cutting instrument

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EP0964774A1 EP0964774A1 (en) 1999-12-22
EP0964774B1 true EP0964774B1 (en) 2001-05-30

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EP (1) EP0964774B1 (en)
JP (1) JP2001511051A (en)
AT (1) ATE201626T1 (en)
DE (2) DE19754253C1 (en)
WO (1) WO1999029476A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10107284B4 (en) * 2000-04-12 2004-08-26 Heinz Rieker Electrically heated cutting instrument
DE20006776U1 (en) * 2000-04-12 2000-11-23 Rieker Heinz Electrically heated cutting instrument
FR2812835A1 (en) * 2000-08-10 2002-02-15 Bernard Bigiaoui INSTRUMENTS WITH HEATING BLADE (S) FOR CUTTING THE PHANERAS
JP2002172280A (en) * 2000-09-28 2002-06-18 Kikuboshi:Kk Hair cutting device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE913034C (en) * 1951-08-24 1954-06-08 Wilhelm Kaiser Inh Ernst Spita scissors
US2866068A (en) * 1956-05-14 1958-12-23 Bernstein Samuel Electrically heated butcher knife
GB1432242A (en) * 1972-04-16 1976-04-14 Spreadally Pty Ltd Articles of cutlery paint scrapers and the like
DE7321821U (en) * 1972-06-12 1973-10-31 Soc De Personnes A Responsabilite Limitee Capilustro Hair treatment device
US3973528A (en) * 1975-02-28 1976-08-10 Clairol Incorporated Styling apparatus for hair
DE3515414A1 (en) * 1985-04-29 1986-10-30 Jürgen 2082 Uetersen Rüting Table or kitchen knife
IT1246250B (en) * 1990-07-10 1994-11-17 Giovanni Caron HIGHLY HEATED, THERMALLY CONTROLLED CUTTING SCISSORS, IN PARTICULAR TO THE EFFECTS OF ASEPTICITY AND TO SELF-CAUSE THE HAIR DURING THE CUT AS WELL AS THE SYSTEM FOR THEIR MANAGEMENT
DE4032341A1 (en) * 1990-10-09 1992-04-16 Gerhard Mangold Pivot for secateurs or shears - has circular grooves or roller balls formed in contact surfaces of two legs
DE4407797C2 (en) * 1994-03-09 1996-07-25 Renate Fleck Fa Thermometer
US5438758A (en) * 1994-05-31 1995-08-08 Roth-White; Jenny V. Heated knife
DE29506308U1 (en) * 1995-04-12 1995-07-06 THERAcut - Hair - Technik GmbH, 78194 Immendingen Device for heating the blades of scissors, knives and the like.
DE19646190A1 (en) * 1996-11-08 1998-05-14 Heiss Josef Medizintech Electrically heated scissors with resistive coating on each limb
DE29617177U1 (en) * 1996-10-02 1996-12-05 THERA-cut Hairtechnik GmbH, 78194 Immendingen Electrically heated scissors
DE29622126U1 (en) * 1996-12-20 1997-03-13 Homann, Steffen, 79110 Freiburg scissors

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JP2001511051A (en) 2001-08-07
EP0964774A1 (en) 1999-12-22
ATE201626T1 (en) 2001-06-15
DE19754253C1 (en) 1999-09-09
DE59800793D1 (en) 2001-07-05
WO1999029476A1 (en) 1999-06-17

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