EP0446430B1 - Razor blade unit - Google Patents
Razor blade unit Download PDFInfo
- Publication number
- EP0446430B1 EP0446430B1 EP90122793A EP90122793A EP0446430B1 EP 0446430 B1 EP0446430 B1 EP 0446430B1 EP 90122793 A EP90122793 A EP 90122793A EP 90122793 A EP90122793 A EP 90122793A EP 0446430 B1 EP0446430 B1 EP 0446430B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- razor blade
- razor
- cover cap
- strip
- shaving
- 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 - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/40—Details or accessories
- B26B21/44—Means integral with, or attached to, the razor for storing shaving-cream, styptic, or the like
- B26B21/443—Lubricating strips attached to the razor head
Definitions
- the invention relates to a razor head, in particular a razor blade unit, arranged at the front end of a handle of a wet shaving apparatus, with a plastic housing having a front guide bar and a rear cover cap with an embedded single razor blade, a sliding strip being arranged as a separate part on a housing for the cover cap and the whole Covers the surface of the cap behind the cutting edge of the individual razor blade.
- Wet shavers basically consist of a handle, at the front end of which a shaving head is arranged.
- This shaving head can be integrally formed with the handle to form a so-called disposable razor.
- the so-called razor blade units are also known, in which a single or double razor blade is permanently embedded in a plastic housing and which can be interchangeably arranged by means of a corresponding mechanism at the front end of a handle of the wet shaving apparatus.
- the razor head consists of a plastic housing in which a razor blade is embedded.
- This plastic housing has a front guide bar and a rear cover cap which, together with the cutting edge of the razor blade, define the shaving geometry.
- the cover cap has a sliding strip. It is a solid, but water-soluble shaving aid, which the Reduced frictional resistance between the skin and the razor head during the shaving process.
- the cover cap is provided with a recess which runs parallel to the cutting edge of the razor blade and into which the sliding strip is inserted.
- the disadvantage here is that the sliding strip protrudes from the top of the cover cap and thus changes the shaving geometry in such a way that a deteriorated shaving result is the result. Overall, this is due to the fact that the sliding strip only makes up part of the relatively wide cover cap. The resulting relatively poor gliding behavior makes a gentle shave impossible, which is particularly critical for sensitive skin.
- US-A-4,875,287 discloses a generic razor blade unit for a wet shaver.
- a single razor blade is embedded in a plastic housing, this plastic housing having a front guide bar and a rear cover cap.
- a sliding strip is arranged in a corresponding recess in the rear cover cap.
- This sliding strip covers almost the entire surface of the cap behind the cutting edge of the individual razor blade.
- the film forming the sliding strip is a strip provided with a curved surface, which follows the geometry of the recess in the cover cap underneath.
- there are disadvantages in the sliding behavior due to the cap edges surrounding the sliding strip on the other hand, however, there is an undefined shaving geometry.
- the curved surface comes tangentially into contact with the skin to be shaved in an unpredictable width, so that the shaving geometry is not predetermined. Since the glide strip consists of a water-soluble glide material, it changes its surface geometry with increasing use.
- GB-A-2 009 017 shows a substantially flat film which is arranged as a narrow strip on the top of the cover cap. Furthermore, it is disclosed to arrange a slide strip blade on the cutting edge, to produce the entire guide strip or the entire shaving head from lubricant material. In DE-A-3 743 298 it is disclosed to arrange a sliding strip on the cover cap which is comparatively narrow and only one Covers part of the cover cap.
- GB-A-2 024 082 discloses making the entire shaving head housing, the entire guide bar or the entire rear cap from a lubricant material.
- the object of the invention is to further develop the known shaving head in such a way that an even gentler shaving is thereby made possible and an optimal shaving geometry can be set.
- the sliding strip has an essentially flat surface and is essentially wedge-shaped, and its wedge tip is inserted forwardly into the upper recess of the housing in the shaving direction.
- the razor head in particular the razor blade unit of the wet shaver, has an extremely wide sliding strip, which forms the entire surface behind the cutting edge of the razor blade and thus the cover cap, a particularly gentle shave is possible, which is particularly noticeable in sensitive houses.
- an enlargement the effective surface of the glide strip leads to an improvement in shaving comfort in the direction of gentleness.
- the reason for this can be seen in the fact that an increased sliding strip surface with unchanged force input into the shaving apparatus leads to less severe deformation of the skin and the reduced specific surface pressure, namely the pressure, activates the sliding layer better and permanently.
- the surprising success of widening the sliding strip is thus the result of an improved sliding behavior. It is worth noting that the classic laws of mechanics are not used in the shaving process.
- the coefficient of friction and thus the frictional force is independent of the size of the contact surface and this applies provided that the friction partners are not elastic
- wet shaving it has emerged as a surprising effect with wet shaving that the coefficient of friction depends on the size of the contact surface of the friction partners depends. The larger the area, the lower the coefficient of friction. With wet shaving, this is due to the fact that the skin is elastic.
- the widened sliding strip has the advantage that it defines an optimal, same shaving angle without, for example, disturbing the shaving geometry.
- the sliding strip is wedge-shaped and is inserted with its wedge tip toward the front in the shaving direction in the upper recess of the plastic housing. To fix it, the glide strip can be glued in particular.
- the wedge-shaped design of the glide strip has the advantage that an optimal shaving geometry can thereby be set, the wedge tip of the glide strip essentially parallel to the cutting edge of the razor blade.
- the lubricant for the sliding strip is a xerogel which, when water is taken up as a dispersing agent, changes into a lyogel with a coefficient of friction ⁇ ⁇ 0.25 which is highly slidable on the skin of the user.
- a lubricant has the advantage of a very low coefficient of friction, so that an extremely gentle shave is possible with such a sliding strip.
- Such a lubricant is described in the applicant's German patent application P 37 43 298.2. The features contained therein are particularly in the claims likewise the subject of the present application relating to the lubricant for the sliding strip based on a xerogel.
- the first embodiment of a razor blade unit 1 shown in FIGS. 1 and 2 consists of a plastic housing 2, in which a razor blade 4 in the form of a single razor blade is non-detachably embedded on a blade table 3.
- the razor blade 4 is sandwiched between the blade table 3 of the plastic housing 2 and the upper housing 5 for a cover cap 6, the housing 5 being riveted from plastic to the plastic housing 2.
- the plastic housing 2 has a front guide bar 7 which extends parallel to the cutting edge of the razor blade 4.
- the housing 5 for the cover cap 6 is provided with a recess 8 on the upper side.
- a wedge-shaped sliding strip 9 is received and fixed by gluing.
- the chisel tip 10 of the slide strip 9 is aligned in the shaving direction and runs parallel to the cutting edge of the razor blade 4.
- the surface 11 of the slide strip 9 is flat.
- the sliding strip 9 covers almost the entire area behind the razor blade 4 and thus forms the cover cap 6 which, together with the front guide bar 7 and the razor blade 4, defines the cutting geometry of the razor blade unit 1.
- the wide sliding strip 9 is a prerequisite for an exceptionally gentle shave and a well-defined shaving angle.
Abstract
Description
Die Erfindung betrifft einen am vorderen Ende eines Handgriffs eines Naßrasierapparates angeordneten Rasierkopf, insbesondere Rasierklingeneinheit, mit einem eine vordere Führungsleiste sowie eine hintere Abdeckkappe aufweisenden Kunststoffgehäuse mit einer eingebetteten Einzelrasierklinge, wobei ein Gleitstreifen als separates Teil auf einem Gehäuse für die Abdeckkappe angeordnet ist und die gesamte Oberfläche der Abdeckkappe hinter der Schneidkante der Einzelrasierklinge abdeckt.The invention relates to a razor head, in particular a razor blade unit, arranged at the front end of a handle of a wet shaving apparatus, with a plastic housing having a front guide bar and a rear cover cap with an embedded single razor blade, a sliding strip being arranged as a separate part on a housing for the cover cap and the whole Covers the surface of the cap behind the cutting edge of the individual razor blade.
Naßrasierapparate bestehen grundsätzlich aus einem Handgriff, an dessen vorderem Ende ein Rasierkopf angeordnet ist. Dieser Rasierkopf kann dabei zur Bildung eines sogenannten Einwegrasierapparates einstückig mit dem Handgriff ausgebildet sein. Alternativ hierzu kennt man auch die sogenannten Rasierklingeneinheiten, bei denen in einem Kunststoffgehäuse eine Einfach- oder Doppelrasierklinge unlösbar eingebettet ist und die auswechselbar mittels eines entsprechenden Mechanismus am vorderen Ende eines Handgriffs des Naßrasierapparates angeordnet werden können.Wet shavers basically consist of a handle, at the front end of which a shaving head is arranged. This shaving head can be integrally formed with the handle to form a so-called disposable razor. As an alternative to this, the so-called razor blade units are also known, in which a single or double razor blade is permanently embedded in a plastic housing and which can be interchangeably arranged by means of a corresponding mechanism at the front end of a handle of the wet shaving apparatus.
Wie bereits erwähnt, besteht der Rasierkopf sowohl bei einem Einwegrasierapparat als auch bei einer Rasierklingeneinheit aus einem Kunststoffgehäuse, in dem eine Rasierklinge eingebettet ist. Dieses Kunststoffgehäuse weist eine vordere Führungsleiste sowie eine hintere Abdeckkappe auf, die zusammen mit der Schneidkante der Rasierklinge die Rasiergeometrie definieren. Um die Rasiereigenschaften des Rasiererkopfes zu verbessern, weist die Abdeckkappe einen Gleitstreifen auf. Dabei handelt es sich um ein festes, jedoch wasserlösliches Rasierhilfsmittel, welches den Reibungswiderstand zwischen der Haut und dem Rasierkopf während des Rasiervorganges verringert. Dabei ist bei den bekannten Rasierapparaten die Abdeckkappe mit einer parallel zur Schneidkante der Rasierklinge verlaufenden Ausnehmung versehen, in die der Gleitstreifen eingesetzt ist. Nachteilig ist dabei, daß der Gleitstreifen oberseitig über die Abdeckkappe übersteht und damit die Rasiergeometrie derart verändert, daß ein verschlechtertes Rasierergebnis die Folge ist. Dies ist insgesamt dadurch bedingt, daß der Gleitstreifen nur einen Teil der relativ breiten Abdeckkappe ausmacht. Das dadurch bedingte relativ schlechte Gleitverhalten macht eine sanfte Rasur nicht möglich, was insbesondere für eine empfindliche Haut kritisch ist.As already mentioned, both in a disposable razor and in a razor blade unit, the razor head consists of a plastic housing in which a razor blade is embedded. This plastic housing has a front guide bar and a rear cover cap which, together with the cutting edge of the razor blade, define the shaving geometry. To improve the shaving properties of the razor head, the cover cap has a sliding strip. It is a solid, but water-soluble shaving aid, which the Reduced frictional resistance between the skin and the razor head during the shaving process. In the case of the known razors, the cover cap is provided with a recess which runs parallel to the cutting edge of the razor blade and into which the sliding strip is inserted. The disadvantage here is that the sliding strip protrudes from the top of the cover cap and thus changes the shaving geometry in such a way that a deteriorated shaving result is the result. Overall, this is due to the fact that the sliding strip only makes up part of the relatively wide cover cap. The resulting relatively poor gliding behavior makes a gentle shave impossible, which is particularly critical for sensitive skin.
Die US-A- 4,875,287 offenbart eine gattungsgemäße Rasierklingeneinheit für einen Naßrasierapparat. Dabei ist in einem Kunststoffgehäuse eine Einfachrasierklinge eingebettet, wobei dieses Kunststoffgehäuse eine vordere Führungsleiste sowie eine hintere Abdeckkappe aufweist. In einer entsprechenden Ausnehmung in der hinteren Abdeckkappe ist ein Gleitstreifen angeordnet. Dieser Gleitstreifen deckt nahezu die gesamte Oberfläche der Abdeckkappe hinter der Schneidkante der Einzelrasierklinge ab. Bei der den Gleitstreifen bildenden Folie handelt es sich um einen mit einer gekrümmten Oberfläche versehenen Streifen, welcher der Geometrie der darunterliegenden Ausnehmung in der Abdeckkappe folgt. Zum einen ergeben sich durch die um den Gleitstreifen herumstehenden Kappenränder Nachteile im Gleitverhalten, zum anderen ergibt sich jedoch eine undefinierte Rasiergeometrie. Die gekrümmte Oberfläche kommt tangential in einer nicht vorhersehbaren Breite mit der zu rasierenden Haut in Berührung, so daß die Rasiergeometrie nicht vorherbestimmt ist. Da der Gleitstreifen aus einem wasserlöslichen Gleitmaterial besteht, verändert er mit zunehmendem Gebrauch auch seine Oberflächengeometrie.US-A-4,875,287 discloses a generic razor blade unit for a wet shaver. In this case, a single razor blade is embedded in a plastic housing, this plastic housing having a front guide bar and a rear cover cap. A sliding strip is arranged in a corresponding recess in the rear cover cap. This sliding strip covers almost the entire surface of the cap behind the cutting edge of the individual razor blade. The film forming the sliding strip is a strip provided with a curved surface, which follows the geometry of the recess in the cover cap underneath. On the one hand, there are disadvantages in the sliding behavior due to the cap edges surrounding the sliding strip, on the other hand, however, there is an undefined shaving geometry. The curved surface comes tangentially into contact with the skin to be shaved in an unpredictable width, so that the shaving geometry is not predetermined. Since the glide strip consists of a water-soluble glide material, it changes its surface geometry with increasing use.
Die GB-A-2 009 017 zeigt eine im wesentlichen ebene Folie, die als schmaler Streifen auf der Oberseite der Abdeckkappe angeordnet ist. Weiterhin wird offenbart, an der Schneidkante ein Gleitstreifenblatt anzuordnen, die gesamte Führungsleiste oder den gesamten Rasierkopf aus Gleitmittelmaterial herzustellen. In der DE-A-3 743 298 wird offenbart, auf der Abdeckkappe einen Gleitstreifen anzuordnen, der vergleichsweise schmal ist und nur einen Teil der Abdeckkappe abdeckt. Die GB-A-2 024 082 offenbart, das gesamte Rasierkopfgehäuse, die gesamte Führungsleiste oder die gesamte hintere Abdeckkappe aus Gleitmittelmaterial herzustellen.GB-A-2 009 017 shows a substantially flat film which is arranged as a narrow strip on the top of the cover cap. Furthermore, it is disclosed to arrange a slide strip blade on the cutting edge, to produce the entire guide strip or the entire shaving head from lubricant material. In DE-A-3 743 298 it is disclosed to arrange a sliding strip on the cover cap which is comparatively narrow and only one Covers part of the cover cap. GB-A-2 024 082 discloses making the entire shaving head housing, the entire guide bar or the entire rear cap from a lubricant material.
Davon ausgehend liegt der Erfindung die Aufgabe zugrunde, den bekannten Rasierkopf derart weiterzubilden, daß eine noch sanftere Rasur damit ermöglicht wird und eine optimale Rasiergeometrie einstellbar ist.Proceeding from this, the object of the invention is to further develop the known shaving head in such a way that an even gentler shaving is thereby made possible and an optimal shaving geometry can be set.
Als technische Lösung wird mit der Erfindung vorgeschlagen, daß der Gleitstreifen eine im wesentlichen ebene Oberfläche aufweist und im wesentlichen keilförmig ausgebildet sowie mit seiner Keilspitze in Rasierrichtung nach vorne in die oberseitige Ausnehmung des Gehäuses eingesetzt ist.As a technical solution , it is proposed with the invention that the sliding strip has an essentially flat surface and is essentially wedge-shaped, and its wedge tip is inserted forwardly into the upper recess of the housing in the shaving direction.
Indem der Rasierkopf, insbesondere die Rasierklingeneinheit des Naßrasierapparates einen extrem breiten Gleitstreifen aufweist, welcher die gesamte Oberfläche hinter der Schneidkante der Rasierklinge und damit die Abdeckkappe bildet, ist damit eine besonders sanfte Rasur möglich, was sich insbesondere bei empfindlicher Haus positiv bemerkbar macht. Es ist nämlich in überraschender Weise festgestellt worden, daß eine Vergrößerung der wirksamen Fläche des Gleitstreifens zu einer Verbesserung des Rasierkomforts in Richtung Sanftheit führt. Der Grund hierfür ist darin zu sehen, daß eine vergrößerte Gleitstreifenfläche bei unveränderter Krafteinleitung in den Rasierapparat zu einer weniger starken Deformation der Haut führt und die verringerte spezifische Flächenpressung, nämlich der Druck aktiviert die Gleitschicht besser und dauerhaft. Der überraschende Erfolg der Verbreiterung des Gleitstreifens ist somit das Ergebnis eines verbesserten Gleitverhaltens. Dabei ist beachtenswert, daß beim Rasiervorgang die klassischen Gesetze der Mechanik nicht zur Anwendung kommen. Während bei diesen der Reibungskoeffizient und somit die Reibungskraft unabhängig von der Größe der Auflagefläche ist und dies unter der Voraussetzung gilt, daß die Reibungspartner nicht elastisch sind, hat sich bei der Naßrasur als überraschender Effekt herausgestellt, daß der Reibungskoeffizient von der Größe der Auflagefläche der Reibungspartner abhängt. Je größer nämlich die Fläche ist, um so niedriger wird der Reibungskoeffizient. Dies ist bei der Naßrasur dadurch bedingt, daß die Haut elastisch ist. Schließlich hat der verbreiterte Gleitstreifen den Vorteil, daß dadurch ein optimaler, gleicher Rasierwinkel definiert ist, ohne daß beispielsweise die Rasiergeometrie gestört würde.Since the razor head, in particular the razor blade unit of the wet shaver, has an extremely wide sliding strip, which forms the entire surface behind the cutting edge of the razor blade and thus the cover cap, a particularly gentle shave is possible, which is particularly noticeable in sensitive houses. It has been surprisingly found that an enlargement the effective surface of the glide strip leads to an improvement in shaving comfort in the direction of gentleness. The reason for this can be seen in the fact that an increased sliding strip surface with unchanged force input into the shaving apparatus leads to less severe deformation of the skin and the reduced specific surface pressure, namely the pressure, activates the sliding layer better and permanently. The surprising success of widening the sliding strip is thus the result of an improved sliding behavior. It is worth noting that the classic laws of mechanics are not used in the shaving process. While in these the coefficient of friction and thus the frictional force is independent of the size of the contact surface and this applies provided that the friction partners are not elastic, it has emerged as a surprising effect with wet shaving that the coefficient of friction depends on the size of the contact surface of the friction partners depends. The larger the area, the lower the coefficient of friction. With wet shaving, this is due to the fact that the skin is elastic. Finally, the widened sliding strip has the advantage that it defines an optimal, same shaving angle without, for example, disturbing the shaving geometry.
Der Gleitstreifen ist keilförmig ausgebildet und mit seiner Keilspitze in Rasierrichtung nach vorne in die oberseitige Ausnehmung des Kunststoffgehäuses eingesetzt. Zum Fixieren kann dabei der Gleitstreifen insbesondere festgeklebt werden. Die keilförmige Ausbildung des Gleitstreifens hat den Vorteil, daß dadurch eine optimale Rasiergeometrie einstellbar ist, wobei die Keilspitze des Gleitstreifens im wesentlichen direkt hinter der Schneidkante der Rasierklinge parallel zu dieser verläuft.The sliding strip is wedge-shaped and is inserted with its wedge tip toward the front in the shaving direction in the upper recess of the plastic housing. To fix it, the glide strip can be glued in particular. The wedge-shaped design of the glide strip has the advantage that an optimal shaving geometry can thereby be set, the wedge tip of the glide strip essentially parallel to the cutting edge of the razor blade.
Während der Erfindungsgedanke, nämlich die Abdeckkappe ausschließlich durch den Gleitstreifen zu bilden, grundsätzlich auch bei einem Rasierkopf mit einer Doppelrasierklinge anwendbar ist, ist in einer bevorzugten Anwendung des Erfindungsgedankens im Kunststoffgehäuse eine Einzelrasierklinge angeordnet. Dies bringt den Vorteil mit sich, daß die Rasierklinge oberseitig nur einen schmalen Streifen einnimmt, so daß die relativ breite Fläche dahinter im Bereich der Abdeckkappe durch einen sehr breiten Gleitstreifen gebildet ist, der ungefähr doppelt so breit ist wie die Gleitstreifen bei herkömmlichen Rasierköpfen. Bei den üblichen Abmessungen für Rasierköpfe bzw. Rasierklingeneinheiten beträgt dabei die in Rasierrichtung gesehene Breite des Gleitstreifens ungefähr 6mm.While the idea of the invention, namely to form the cover cap exclusively by the sliding strip, can in principle also be applied to a razor head with a double razor blade, a single razor blade is arranged in a preferred application of the inventive concept in the plastic housing. This has the advantage that the razor blade occupies only a narrow strip on the upper side, so that the relatively wide area behind it in the area of the cover cap is formed by a very wide sliding strip which is approximately twice as wide as the sliding strips in conventional razor heads. With the usual dimensions for razor heads or razor blade units, the width of the slide strip in the shaving direction is approximately 6 mm.
Schließlich wird in einer Weiterbildung vorgeschlagen, daß das Gleitmittel für den Gleitstreifen ein Xerogel ist, welches bei der Aufnahme von Wasser als Dispersionsmittel in ein auf der Haut des Benutzers hochgleitfähiges Lyogel mit einem Reibungskoeffizienten µ < 0,25 übergeht. Ein derartiges Gleitmittel hat den Vorteil eines sehr geringen Reibungskoeffizienten, so daß mit einem derartigen Gleitstreifen eine extrem sanfte Rasur möglich ist. Ein derartiges Gleitmittel ist in der deutschen Patentanmeldung P 37 43 298.2 der Anmelderin beschrieben. Die darin enthaltenen Merkmale insbesondere in den Ansprüchen sind gleichermaßen Gegenstand der vorliegenden Anmeldung betreffend das Gleitmittel für den Gleitstreifen auf der Basis eines Xerogels.Finally, it is proposed in a further development that the lubricant for the sliding strip is a xerogel which, when water is taken up as a dispersing agent, changes into a lyogel with a coefficient of friction μ <0.25 which is highly slidable on the skin of the user. Such a lubricant has the advantage of a very low coefficient of friction, so that an extremely gentle shave is possible with such a sliding strip. Such a lubricant is described in the applicant's German patent application P 37 43 298.2. The features contained therein are particularly in the claims likewise the subject of the present application relating to the lubricant for the sliding strip based on a xerogel.
Eine Ausführungsform eines erfindungsgemäßen Rasierkopfes in Form einer Rasierklingeneinheit wird nachfolgend anhand der Zeichnungen beschrieben. In diesen zeigt:
- Fig. 1
- eine Ansicht einer ersten Ausführungsform einer Rasierklingeneinheit und
- Fig. 2
- einen Schnitt entlang der Linie II-II in Fig. 1 in vergrößertem Maßstab.
- Fig. 1
- a view of a first embodiment of a razor blade unit and
- Fig. 2
- a section along the line II-II in Fig. 1 on an enlarged scale.
Die in Fig. 1 und 2 dargestellte erste Ausführungsform einer Rasierklingeneinheit 1 besteht aus einem Kunststoffgehäuse 2, in dem auf einem Klingentisch 3 aufliegend eine Rasierklinge 4 in Form einer Einfachrasierklinge unlösbar eingebettet ist. Dabei ist die Rasierklinge 4 sandwichartige zwischen dem Klingentisch 3 des Kunststoffgehäuses 2 und dem oberen Gehäuse 5 für eine Abdeckkappe 6 festgelegt, wobei das Gehäuse 5 aus Kunststoff mit dem Kunststoffgehäuse 2 vernietet ist. Weiterhin weist das Kunststoffgehäuse 2 eine vordere Führungsleiste 7 auf, die sich parallel zur Schneidkante der Rasierklinge 4 erstreckt.The first embodiment of a
Das Gehäuse 5 für die Abdeckkappe 6 ist oberseitig mit einer Ausnehmung 8 versehen. In dieser ist ein keilförmiger Gleitstreifen 9 aufgenommen und durch Festkleben fixiert. Die Keilspitze 10 des Gleitstreifens 9 ist dabei in Rasierrichtung ausgerichtet und verläuft parallel zur Schneidkante der Rasierklinge 4. Die Oberfläche 11 des Gleitstreifens 9 ist eben.The
Wie in der Zeichnung erkennbar ist, bedeckt der Gleitstreifen 9 nahezu die gesamte Fläche hinter der Rasierklinge 4 und bildet somit die Abdeckkappe 6, welche zusammen mit der vorderen Führungsleiste 7 und der Rasierklinge 4 die Schneidgeometrie der Rasierklingeneinheit 1 definiert. Der breite Gleitstreifen 9 ist dabei Voraussetzung für eine außerordentlich sanfte Rasur und einem wohldefinierten Rasierwinkel.As can be seen in the drawing, the
- 11
- RasierklingeneinheitRazor blade unit
- 22nd
- KunststoffgehäusePlastic housing
- 33rd
- KlingentischBlade table
- 44th
- Rasierklingerazor blade
- 55
- Gehäusecasing
- 66
- AbdeckkappeCover cap
- 77
- FührungsleisteGuide bar
- 88th
- AusnehmungRecess
- 99
- GleitstreifenSliding strips
- 1010th
- KeilspitzeChisel tip
- 1111
- Oberflächesurface
Claims (3)
- A razor head arranged at the front end of a handle of a wet razor, in particular a razor blade unit, and that includes a plastic housing (2) which is provided with a forward guardbar (7) as well as a rear cover cap (6), with a single razor blade (4) embedded in the plastic housing (2), wherein a glide strip is disposed on the cover cap (6) as a separate part to the housing (5) such that the whole surface of the cover cap (6) behind the cutting edges of the razor blade (4) is covered,
characterised in that,
the glide strip (9) comprises a flat surface (11) and a wedge shaped cross section, such that the glide strip is orientated with its wedge point (10) towards the front, in the direction of the shave, in an upper recess (8) in the cover cap (6) of the housing (5). - A razor head according to claim 1, characterised in that the width of the glide strip, as seen perpendicular to the cutting edges, is approximately 6 mm.
- A razor head according to one of claims 1 or 2, characterised in that, the lubricating means for the glide strip (9) is a xerogel, which, when it receives water as the dispersion medium, is converted into a lyogel that glides very easily on the skin of the user with a coefficient of friction < 0.25.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9002710U DE9002710U1 (en) | 1990-03-08 | 1990-03-08 | |
| DE9002710U | 1990-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0446430A1 EP0446430A1 (en) | 1991-09-18 |
| EP0446430B1 true EP0446430B1 (en) | 1996-04-03 |
Family
ID=6851745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90122793A Expired - Lifetime EP0446430B1 (en) | 1990-03-08 | 1990-11-29 | Razor blade unit |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5095620A (en) |
| EP (1) | EP0446430B1 (en) |
| AT (1) | ATE136245T1 (en) |
| DE (2) | DE9002710U1 (en) |
| ES (1) | ES2085314T3 (en) |
| GR (1) | GR3019620T3 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59202090D1 (en) * | 1992-02-14 | 1995-06-08 | Wilkinson Sword Gmbh | Shaver head, in particular a razor blade unit, of a wet shaver. |
| US5626154A (en) * | 1993-09-13 | 1997-05-06 | The Gillette Company | Method and system for shaving including a lubricant and a water-swellable polymer |
| US5711076A (en) * | 1996-03-27 | 1998-01-27 | The Gillette Company | Shaving system with improved guard structure |
| US5956848A (en) | 1997-02-27 | 1999-09-28 | The Gillette Company | Shaving system |
| USD422380S (en) * | 1998-08-31 | 2000-04-04 | The Gillette Company | Shaving aid strip for razor cartridge |
| FR2793435B1 (en) * | 1999-05-12 | 2001-08-03 | Bic Rech Et Dev | RAZOR HEAD COMPRISING AN SOLIDARITY ANTI-FRICTION ELEMENT OF A SOLE |
| US6167625B1 (en) | 1999-05-18 | 2001-01-02 | Warner-Lambert Company | Shaving implement |
| US20040177513A1 (en) * | 1999-05-27 | 2004-09-16 | William Vreeland | Razor glide strip |
| USD424745S (en) * | 1999-08-05 | 2000-05-09 | The Gillette Company | Shaving aid strip for razor cartridge |
| US7197825B2 (en) * | 2004-03-11 | 2007-04-03 | The Gillette Company | Razors and shaving cartridges with guard |
| CN102232126B (en) * | 2008-12-16 | 2014-06-18 | 苏威氟有限公司 | Metal parts containing a protective coating |
| US9931755B2 (en) | 2016-03-25 | 2018-04-03 | Avraham Gilor | Safety razor |
| US9840014B2 (en) * | 2016-03-25 | 2017-12-12 | Avraham Gilor | Safety razor |
| PL3597380T3 (en) | 2018-07-18 | 2022-01-17 | Societé Bic S.A. | Blade assemblies with lubricating elements |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4077119A (en) * | 1977-02-16 | 1978-03-07 | Jose Manuel Sellera | Shaving device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738000A (en) * | 1971-07-29 | 1973-06-12 | A Samko | Disposable razor |
| US4170821A (en) * | 1977-12-02 | 1979-10-16 | Warner-Lambert Company | Razor cartridges |
| GB2024082B (en) * | 1978-05-31 | 1982-05-06 | Gillette Co | Safety razors |
| US4328615A (en) * | 1979-12-31 | 1982-05-11 | Warner-Lambert Company | Razor blade assembly with movable cover cap |
| US4624051A (en) * | 1984-12-07 | 1986-11-25 | The Gillette Company | Shaving unit |
| US4683096A (en) * | 1986-01-31 | 1987-07-28 | Warner-Lambert Company | Method of securing a shaving aid to a razor cartridge |
| US4875287A (en) * | 1986-11-14 | 1989-10-24 | Hydromer, Inc. | Shaving articles lubricious when wet and compositions therefor |
| DE3814135A1 (en) * | 1987-05-06 | 1988-11-24 | Wilkinson Sword Gmbh | METHOD FOR PRODUCING A HYDROPHILIC COATING ON A MOLDED PART AND USING THE METHOD OF A SHAVER |
| DE3743298A1 (en) * | 1987-12-19 | 1989-06-29 | Wilkinson Sword Gmbh | SHAVING APPARATUS AND METHOD FOR PRODUCING A LAYER OF LOW FRICTION RESISTANCE ON A SHAVING APPARATUS |
-
1990
- 1990-03-08 DE DE9002710U patent/DE9002710U1/de not_active Expired - Lifetime
- 1990-11-29 ES ES90122793T patent/ES2085314T3/en not_active Expired - Lifetime
- 1990-11-29 DE DE59010260T patent/DE59010260D1/en not_active Expired - Lifetime
- 1990-11-29 EP EP90122793A patent/EP0446430B1/en not_active Expired - Lifetime
- 1990-11-29 AT AT90122793T patent/ATE136245T1/en not_active IP Right Cessation
-
1991
- 1991-01-10 US US07/639,805 patent/US5095620A/en not_active Expired - Lifetime
-
1996
- 1996-04-10 GR GR960401017T patent/GR3019620T3/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4077119A (en) * | 1977-02-16 | 1978-03-07 | Jose Manuel Sellera | Shaving device |
Also Published As
| Publication number | Publication date |
|---|---|
| GR3019620T3 (en) | 1996-07-31 |
| ATE136245T1 (en) | 1996-04-15 |
| ES2085314T3 (en) | 1996-06-01 |
| DE59010260D1 (en) | 1996-05-09 |
| EP0446430A1 (en) | 1991-09-18 |
| US5095620A (en) | 1992-03-17 |
| DE9002710U1 (en) | 1991-07-11 |
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