EP0290071B1 - Dry shaver with at least one roll-type cover, slidable on the housing of the apparatus - Google Patents

Dry shaver with at least one roll-type cover, slidable on the housing of the apparatus Download PDF

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Publication number
EP0290071B1
EP0290071B1 EP88200755A EP88200755A EP0290071B1 EP 0290071 B1 EP0290071 B1 EP 0290071B1 EP 88200755 A EP88200755 A EP 88200755A EP 88200755 A EP88200755 A EP 88200755A EP 0290071 B1 EP0290071 B1 EP 0290071B1
Authority
EP
European Patent Office
Prior art keywords
apparatus housing
roller shutter
shutter
shaving
housing
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
Application number
EP88200755A
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German (de)
French (fr)
Other versions
EP0290071A1 (en
Inventor
Arno Wolfger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0290071A1 publication Critical patent/EP0290071A1/en
Application granted granted Critical
Publication of EP0290071B1 publication Critical patent/EP0290071B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/12—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the oscillating- cutter type; Cutting heads therefor; Cutters therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3806—Accessories
    • B26B19/382—Built-in accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3853—Housing or handle

Definitions

  • the invention relates to a dry shaver.
  • a dry vase apparatus which has at least one roller shutter which can be moved on the apparatus housing, which is used for optionally covering or releasing a screen shaving foil of the dry shaving apparatus and is guided on both sides of the groove-shaped guides provided on the apparatus housing .
  • the shaving head cannot be detached from the apparatus.
  • the invention has set itself the goal of designing a dry shaving apparatus in such a way that the shaving head, for example for cleaning purposes, can also be released and that the roller shutter on the apparatus housing can be moved without problems and there is no damage to the apparatus housing.
  • the shaving head can be detached from the basic apparatus, that the wall surface of the roller shutter facing the apparatus housing runs at a distance from the apparatus housing and that at least one sliding guide is effective between the roller shutter and the apparatus housing, which locally limits one section in the direction of displacement of the roller shutter The course of contact between the roller shutter and the apparatus housing results.
  • roller shutter and the apparatus housing are not in contact with one another over a large area but only over relatively small surface sections, as a result of which the roller shutter can be easily moved along the apparatus housing without greater friction.
  • apparatus housing is not damaged, in particular scratched, by the wall surface of the roller shutter running at a distance from it, when it is moved, which would result in an unattractive visual impression at the locations of the apparatus housing which are not covered by the roller shutter.
  • a shaving head frame which is detachably held on a basic apparatus and carries the sieve shaving foil on its longitudinal webs
  • a shaving head frame is of course also to be counted among the apparatus housings, so that such a sliding guide can also be provided in its area.
  • the sliding guide is essentially effective in at least one Direction of displacement of the roller shutter oriented rib is formed. Such a measure is characterized by particular simplicity.
  • such a rib can be provided on the wall surface of the roller shutter facing the apparatus housing.
  • the rib is provided on the apparatus housing. Since the apparatus housing is generally made of a harder material than the roller shutter, the fact that the rib is provided on the apparatus housing results in better sliding guidance, which is also less subject to wear.
  • a steel foil with which the roller shutter slides on the rib is attached to the side of the roller shutter facing the apparatus housing, at least in the region of the end thereof facing away from the screen shear foil.
  • Such a steel foil forms a hard support, which improves the properties of the sliding guide and eliminates the risk of the rib provided on the apparatus housing digging into the wall surface of the roller shutter facing the apparatus housing, which on the one hand could impair the smooth movement of the roller shutter and on the other the roller shutter comes into contact with the appliance housing over a large area and could scratch it.
  • Providing such a measure is particularly important in the area of the end of the roller shutter facing away from the screen shear foil, since pressure is exerted on this area by hand when the roller shutter is moved, which results in an increased load on the sliding guide.
  • the sliding guide is formed by rolling elements which are located one behind the other in the direction of displacement of the roller shutter and protrude from the apparatus housing. In this way, good sliding guidance for the roller shutter is also obtained, which keeps it at a distance from the apparatus housing, the roller shutter and the apparatus housing being in contact with one another over particularly small surface sections.
  • the rolling elements can consist of balls or rollers.
  • FIG. 1 shows a dry shaving apparatus with a roller shutter pushed over the screen shaving foil, two sliding guides acting between the roller shutter and the appliance housing, each of which is formed by a rib provided on the appliance housing.
  • Fig. 2 shows the dry shaver according to Fig. 1 in side view.
  • FIG. 3 shows the dry shaving apparatus according to FIG. 1 with the screen shaving foil released by the roller shutter.
  • Fig. 4 shows in side view and in section a section of the guide area for the roller shutter. 5 shows a roller shutter intended for use in a dry shaving apparatus according to FIG.
  • FIG. 6 shows in the representation of FIG. 1 a dry shaving apparatus in which the sliding guides are formed by intersecting ribs arranged on the apparatus housing.
  • FIG. 7 shows in the representation of FIG. 1 a dry shaving apparatus in which the sliding guides are formed by rolling elements.
  • 8 shows a side view and a section of a section of the guide area for the roller shutter in a dry shaving apparatus according to FIG. 7.
  • FIG. 9 shows a roller shutter intended for use in a dry shaving apparatus according to FIG. 7 in a top view of its wall surface facing the apparatus housing when it is placed on the dry shaver.
  • FIGS. 1 and 2 show a dry shaving apparatus which has a basic apparatus 1 and a shaving head frame 2 placed thereon, which together form an apparatus housing 3.
  • the shaving head frame 2 is in a manner not shown here, for example with at least a resilient latch, releasably held on the base 1.
  • Such a shaving head frame serves to hold a curved sieve shaving foil which is completely covered by a roller shutter 4 in FIGS. 1 and 2 in order to protect the sieve shear foil when the dry shaving apparatus is not in use.
  • This roller shutter 4 is arranged displaceably on the apparatus housing 3, wherein it is guided laterally on both sides in the groove-shaped guides 5 and 6 provided on the apparatus housing 3, indicated in FIGS. 1 and 2 by dashed lines.
  • the roller shutter 4 can be pushed from the basic apparatus 1 over the shaving head frame 2 and the screen shaving foil, for which purpose the guides 5 and 6 for the roller shutter from the basic apparatus 1 continue in the side walls 7 and 8 of the shaving head frame 2, where they then, on the curvature of the Screen shaving foil adjusted, curved. If the dry shaving apparatus is to be used for shaving, the roller shutter 4 is pushed back from its position shown in FIGS. 1 and 2 onto the base apparatus 1 until it releases the shaving foil for shaving, as shown in FIG. 3, in the present case as it is is pushed far back that the shaving head frame 2 is released so that it can be removed from the basic apparatus 1, for example for cleaning purposes or for exchanging the screen shaving foil 10 held on the longitudinal webs 9 of the shaving head frame 2.
  • roller shutter 4 is subject to the requirements that it has good stability in the transverse direction so that it can reliably protect the screen shear film 10, but on the other hand is well flexible in the longitudinal direction in order to adapt to the course of a screen sheave 10 which is also relatively strongly curved can.
  • the roller shutter consists, for example, of an elastic support and transverse webs connected to it and spaced apart from one another.
  • roller shutter should be able to be moved easily on the apparatus housing and should not damage, in particular scratch, the apparatus housing when it is moved.
  • wall surface of the roller shutter 4 facing the appliance housing 3 runs at a distance from the appliance housing 3 and that between the roller shutter 4 and the Apparatus housing 3 is effective at least one sliding guide, which results in a locally limited contact course between the roller shutter 4 and the apparatus housing 3 in the displacement direction of the roller shutter.
  • FIG. 4 which shows a section around the region of the guide 5
  • the groove-shaped guides 5 and 6 are for the lateral guidance of the roller shutter 4, into which the latter is, for example, provided with lateral approaches shown in FIG. 5 11 engages in wall sections 12 and 13 of the device housing 3, which are laterally raised at such a level, that the wall surface 14 of the roller shutter 4 facing the device housing 3 extends at a distance from the device housing 3. This distance, which is denoted by a in Fig.
  • roller shutter 4 and the apparatus housing 3 slide guides are effective, which in the present embodiment are formed by two ribs 15 and 16 provided on the apparatus housing 3, which run in the direction of displacement of the roller shutter and also extend over the longitudinal webs 9 of the shaving head frame 2 extend, as can be seen from Fig. 3.
  • the roller shutter 4 with its wall surface 14 facing the appliance housing 3 slidably, which results in a locally limited course of contact between the roller shutter 4 and the appliance housing 3, since the roller shutter and the appliance housing only have relatively small surface sections with one another to be in contact.
  • the ribs 15 and 16 form locally limited supports for the roller shutter 4, which keep its wall surface 14 facing the apparatus housing 3 safely at a distance from the apparatus housing 3.
  • Such supports are therefore important so that the roller shutter 4 under the pressure exerted on it by hand, when moving along the apparatus housing 3, can not bend, so that it always maintains the intended distance a to the apparatus housing.
  • the ribs 15 and 16 are arranged on the apparatus housing means that, like the apparatus housing 3, they consist of a relatively hard material, which results in good sliding guidance and practically no wear. Since the material used for a roller shutter is generally not as hard as the material used for the apparatus housing, it could happen that the ribs 15 and 16 dig into the wall surface 14 of the roller shutter 4 facing the apparatus housing 3, which does not more would be ensured that the roller shutter runs at the desired distance from the apparatus housing. This affects in particular the area of the end of the roller shutter 4 facing away from the screen shear foil 10, which is conveniently gripped by hand to move the roller shutter and thereby exerts pressure on it. This end region of the roller shutter can also be designed specifically as a handle part 17.
  • a steel foil 18 is attached in this end region of the roller shutter 4, on its wall surface 14 facing the apparatus housing 3, as shown in FIG. 5.
  • a hard bearing surface for the ribs 15 and 16 is obtained on the roller shutter 4, which ensures good sliding properties and is not subject to wear.
  • the steel foil 18 extends essentially over the entire width of the roller shutter 4, which gives it a secure hold on the roller shutter. As such, however, it would also be possible to attach individual steel foil sections to the wall surface 14 of the roller shutter 4 only in the area of the ribs 15 and 16.
  • ribs are also provided on the apparatus housing 3 as sliding guides, namely here there are three ribs 19, 20 and 21, which are arranged in a crossing star-shaped pattern, their effectiveness essentially in the direction of displacement the shutter 4 are oriented.
  • the operation of these ribs 19, 20 and 21 is analogous to the operation of the ribs 15 and 16 of the previously described embodiment. If desired, a further rib running across the star point could also be provided.
  • other patterns of ribs which are essentially oriented in the direction of displacement of the roller shutter would also be possible, such as, for example, ribs which undulate in the direction of displacement of the roller shutter.
  • two sliding guides are provided, which are formed by rolling elements, in the present case balls, which lie one behind the other in the displacement direction of the roller shutter 4 and protrude from the apparatus housing 3.
  • One sliding guide consists of balls 22, 23 and 24 and the other sliding guide consists of balls 25, 26 and 27.
  • the sliding guides result in a locally limited contact path between the roller shutter 4 and the apparatus housing 3, in which the roller shutter and the apparatus housing are in contact with one another via particularly small surface sections, corresponding to the spherical caps projecting from the apparatus housing.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Description

Die Erfindung betrifft einen Trockenrasierapparat. Aus der DE-B-1122410 oder der DE-A-1553764 ist ein Trockenvasierapparat bekannt, der mindestens einen am Apparategehäuse verschiebbaren Rolladen aufweist, der zum wahlweisen Abdecken oder Freigeben einer Siebscherfolie des Trockenrasierapparates dient und in am Apparategehäuse vorgesehenen nutförmigen Führungen beidseitig seitlich geführt ist. Bei einem derartigen Trockenrasierapparat ist jedoch der Scherkopf nicht vom Apparat lösbar.The invention relates to a dry shaver. From DE-B-1122410 or DE-A-1553764 a dry vase apparatus is known which has at least one roller shutter which can be moved on the apparatus housing, which is used for optionally covering or releasing a screen shaving foil of the dry shaving apparatus and is guided on both sides of the groove-shaped guides provided on the apparatus housing . With such a dry shaving apparatus, however, the shaving head cannot be detached from the apparatus.

Die Erfindung hat sich zum Ziel gesetzt, einen Trockenrasierapparat so auszubilden, daß auch der Scherkopf, beispielweise für Reinigungszweche, freigegeben werden kann und daß der Rolladen am Apparategehäuse einwandfrei verschiebbar ist und dabei keine Beschädigung des Apparategehäuses entsteht. Erfindungsgemäß ist hiezu vorgesehen, daß der Scherkopf vom Grundapparat lösbar ist, daß die dem Apparategehäuse zugewandte Wandfläche des Rolladens mit Abstand zum Apparategehäuse verläuft und daß zwischen dem Rollladen und dem Apparategehäuse mindestens eine Gleitführung wirksam ist, die einen in der Verschiebungsrichtung des Rollladens abschnittsweise örtlich begrenzten Berühungsverlauf zwischen dem Rolladen und dem Apparategehäuse ergibt. Auf diese Weise ist erreicht, daß der Rolladen und das Apparategehäuse nicht großflächig, sondern nur über relativ kleine Flächenabschnitte miteinander in Berührung stehen, wodurch der Rolladen ohne größere Reibung leichtgängig entlang dem Apparategehäuse verschiebbar ist. Außerdem ist dadurch erreicht, daß das Apparategehäuse durch die mit Abstand zu ihm verlaufende Wandfläche des Rolladens, beim Verschieben desselben, nicht beschädigt, insbesondere zerkratzt wird, was an den vom Rolladen gerade nicht abgedeckten Stellen des Apparategehäuses einen unschönen optischen Eindruck ergeben würde. Bei einem Trockenrasierapparat, der einen an einem Grundapparat lösbar gehaltenen, die Siebscherfolie an seinen Längsstegen tragenden Scherkopfrahmen aufweist, ist natürlich ein solcher Scherkopfrahmen auch zum Apparategehäuse zu zählen, so daß auch in seinem Bereich eine derartige Gleitführung vorgesehen sein kann.The invention has set itself the goal of designing a dry shaving apparatus in such a way that the shaving head, for example for cleaning purposes, can also be released and that the roller shutter on the apparatus housing can be moved without problems and there is no damage to the apparatus housing. According to the invention it is provided that the shaving head can be detached from the basic apparatus, that the wall surface of the roller shutter facing the apparatus housing runs at a distance from the apparatus housing and that at least one sliding guide is effective between the roller shutter and the apparatus housing, which locally limits one section in the direction of displacement of the roller shutter The course of contact between the roller shutter and the apparatus housing results. In this way it is achieved that the roller shutter and the apparatus housing are not in contact with one another over a large area but only over relatively small surface sections, as a result of which the roller shutter can be easily moved along the apparatus housing without greater friction. In addition, it is achieved that the apparatus housing is not damaged, in particular scratched, by the wall surface of the roller shutter running at a distance from it, when it is moved, which would result in an unattractive visual impression at the locations of the apparatus housing which are not covered by the roller shutter. In the case of a dry shaving apparatus which has a shaving head frame which is detachably held on a basic apparatus and carries the sieve shaving foil on its longitudinal webs, such a shaving head frame is of course also to be counted among the apparatus housings, so that such a sliding guide can also be provided in its area.

Als vorteilhaft hat sich erwiesen, wenn die Gleitführung durch mindestens eine wirkungsmäßig im wesentlichen in der Verschiebungsrichtung des Rolladens orientierte Rippe gebildet ist. Eine derartige Maßnahme zeichnet sich durch besondere Einfachheit aus.It has proven to be advantageous if the sliding guide is essentially effective in at least one Direction of displacement of the roller shutter oriented rib is formed. Such a measure is characterized by particular simplicity.

Beispielsweise kann eine solche Rippe, an der dem Apparategehäuse zugewandten Wandfläche des Rolladens vorgesehen sein. Als besonders vorteilhaft hat sich jedoch erwiesen, wenn die Rippe am Apparategehäuse vorgesehen ist. Da das Apparategehäuse in der Regel aus einem härteren Material besteht als der Rolladen, wird dadurch, daß die Rippe am Apparategehäuse vorgesehen ist, eine bessere Gleitführung erhalten, die auch weniger einem Verschleiß unterliegt.For example, such a rib can be provided on the wall surface of the roller shutter facing the apparatus housing. However, it has proven to be particularly advantageous if the rib is provided on the apparatus housing. Since the apparatus housing is generally made of a harder material than the roller shutter, the fact that the rib is provided on the apparatus housing results in better sliding guidance, which is also less subject to wear.

In diesem Zusammenhang hat sich weiters als vorteilhaft erwiesen, wenn an der dem Apparategehäuse zugewandten Seite des Rolladens, mindestens im Bereich des von der Siebscherfolie abgewandten Endes desselben, eine Stahlfolie angebracht ist, mit welcher der Rolladen auf der Rippe gleitet. Eine derartige Stahlfolie bildet eine harte Auflage, wodurch die Eigenschaften der Gleitführung verbessert werden und die Gefahr beseitigt wird, daß sich die am Apparategehäuse vorgesehene Rippe in die dem Apparategehäuse zugewandte Wandfläche des Rolladens eingräbt, wodurch einerseits die leichtgängige Verschiebbarkeit des Rolladens beeinträchtigt werden könnte und andererseits der Rolladen mit dem Apparategehäuse großflächig in Kontakt kommen und dieses zerkratzen könnte. Eine solche Maßnahme vorzusehen, ist insbesondere im Bereich des von der Siebscherfolie abgewandten Endes des Rolladens wichtig, da auf diesen Bereich, beim Verschieben des Rolladens, von Hand aus Druck ausgeübt wird, der eine verstärkte Belastung der Gleitführung ergibt.In this connection, it has also proven to be advantageous if a steel foil with which the roller shutter slides on the rib is attached to the side of the roller shutter facing the apparatus housing, at least in the region of the end thereof facing away from the screen shear foil. Such a steel foil forms a hard support, which improves the properties of the sliding guide and eliminates the risk of the rib provided on the apparatus housing digging into the wall surface of the roller shutter facing the apparatus housing, which on the one hand could impair the smooth movement of the roller shutter and on the other the roller shutter comes into contact with the appliance housing over a large area and could scratch it. Providing such a measure is particularly important in the area of the end of the roller shutter facing away from the screen shear foil, since pressure is exerted on this area by hand when the roller shutter is moved, which results in an increased load on the sliding guide.

Als vorteilhaft hat sich auch erwiesen, wenn die Gleitführung durch in der Verschiebungsrichtung des Rollladens hintereinander liegende, aus dem Apparategehäuse herausragende Wälzkörper gebildet ist. Auf diese Weise wird ebenfalls eine gute Gleitführung für den Rolladen erhalten, die diesen mit Abstand zum Apparategehäuse hält, wobei der Rollladen und das Apparategehäuse über besonders kleine Flächenabschnitte miteinander in Berührung stehen. Die Wälzkörper können dabei aus Kugeln oder Walzen bestehen.It has also proven to be advantageous if the sliding guide is formed by rolling elements which are located one behind the other in the direction of displacement of the roller shutter and protrude from the apparatus housing. In this way, good sliding guidance for the roller shutter is also obtained, which keeps it at a distance from the apparatus housing, the roller shutter and the apparatus housing being in contact with one another over particularly small surface sections. The rolling elements can consist of balls or rollers.

In diesem Zusammenhang hat sich weiters als vorteilhaft erwiesen, wenn an der dem Apparategehäuse zugewandten Wandfläche des Rolladens eine in der Verschiebungsrichtung desselben verlaufende Rinne vorgesehen ist, in welche die am Apparategehäuse angeordneten Wälzkörper der Gleitführung eingreifen. Eine derartige Rinne verbessert die Eigenschaften der Gleitführung für den Rolladen und ergibt auch eine Geradführung für den Rolladen bei seinem Verschieben.In this context it has also proven to be advantageous proven if on the wall surface of the roller shutter facing the apparatus housing there is provided a groove which extends in the direction of displacement thereof and into which the rolling elements of the sliding guide arranged on the apparatus housing engage. Such a channel improves the properties of the sliding guide for the roller shutter and also results in a straight guide for the roller shutter when it is being moved.

Die Erfindung wird im folgenden anhand der Zeichnungen, in welchen einige Ausführungsbeispiele der Erfindung dargestellt sind, auf die sie jedoch nicht beschränkt sein soll, näher erläutert. Fig. 1 zeigt einen Trockenrasierapparat mit einem über die Siebscherfolie geschobenen Rolladen, wobei zwischen dem Rolladen und dem Apparategehäuse zwei Gleitführungen wirksam sind, die durch je eine am Apparategehäuse vorgesehene Rippe gebildet sind. Fig. 2 zeigt den Trockenrasierapparat nach Fig. 1 in Seitenansicht. Fig. 3 zeigt den Trockenrasierapparat nach Fig. 1 mit vom Rolladen freigegebener Siebscherfolie. Fig. 4 zeigt in Seitenansicht und im Schnitt einen Ausschnitt des Führungsbereiches für den Rolladen. Fig. 5 zeigt einen zur Verwendung bei einem Trockenrasierapparat nach Fig. 1 bestimmten Rolladen an sich in Draufsicht auf seine dem Apparategehäuse zugewandte Wandfläche, wenn er am Trockenrasierapparat angeordnet ist. Fig. 6 zeigt in der Darstellungsweise von Fig. 1 einen Trockenrasierapparat, bei dem die Gleitführungen durch am Apparategehäuse angeordnete, sich kreuzende Rippen gebildet sind. Fig. 7 zeigt in der Darstellungsweise von Fig. 1 einen Trockenrasierapparat, bei dem die Gleitführungen durch Wälzkörper gebildet sind. Fig. 8 zeigt in Seitenansicht und im Schnitt einen Ausschnitt des Führungsbereiches für den Rolladen bei einem Trockenrasierapparat nach Fig. 7. Fig. 9 zeigt einen zur Verwendung bei einem Trockenrasierapparat nach Fig. 7 bestimmten Rolladen an sich in Draufsicht auf seine dem Apparategehäuse zugewandte Wandfläche, wenn er am Trockenrasierapparat angeordnet ist.The invention is explained in more detail below with reference to the drawings, in which some exemplary embodiments of the invention are shown, to which, however, it should not be limited. 1 shows a dry shaving apparatus with a roller shutter pushed over the screen shaving foil, two sliding guides acting between the roller shutter and the appliance housing, each of which is formed by a rib provided on the appliance housing. Fig. 2 shows the dry shaver according to Fig. 1 in side view. FIG. 3 shows the dry shaving apparatus according to FIG. 1 with the screen shaving foil released by the roller shutter. Fig. 4 shows in side view and in section a section of the guide area for the roller shutter. 5 shows a roller shutter intended for use in a dry shaving apparatus according to FIG. 1 in a top view of its wall surface facing the apparatus housing when it is arranged on the dry shaving apparatus. FIG. 6 shows in the representation of FIG. 1 a dry shaving apparatus in which the sliding guides are formed by intersecting ribs arranged on the apparatus housing. FIG. 7 shows in the representation of FIG. 1 a dry shaving apparatus in which the sliding guides are formed by rolling elements. 8 shows a side view and a section of a section of the guide area for the roller shutter in a dry shaving apparatus according to FIG. 7. FIG. 9 shows a roller shutter intended for use in a dry shaving apparatus according to FIG. 7 in a top view of its wall surface facing the apparatus housing when it is placed on the dry shaver.

Die Figuren 1 und 2 zeigen einen Trockenrasierapparat, der einen Grundapparat 1 und einen auf diesen aufgesetzten Scherkopfrahmen 2 aufweist, die zusammen ein Apparategehäuse 3 bilden. Der Scherkopfrahmen 2 ist dabei, auf hier nicht näher dargestellte Art und Weise, beispielsweise mit mindestens einem federnden Rastriegel, lösbar am Grundapparat 1 gehalten. Ein solcher Scherkopfrahmen dient zur Halterung einer gewölbt verlaufenden Siebscherfolie, die in den Figuren 1 und 2 vollständig durch einen Rolladen 4 abgedeckt ist, um die Siebscherfolie bei Nichtgebrauch des Trockenrasierapparates zu schützen. Dieser Rolladen 4 ist am Apparategehäuse 3 verschiebbar angeordnet, wobei er in am Apparategehäuse 3 vorgesehenen nutförmigen, in den Figuren 1 und 2 durch strichlierte Linien angedeuteten, Führungen 5 und 6 beidseitig seitlich geführt ist. Der Rolladen 4 ist vom Grundapparat 1 her über den Scherkopfrahmen 2 und die Siebscherfolie schiebbar, wozu sich die Führungen 5 und 6 für den Rolladen vom Grundapparat 1 her in den Seitenwänden 7 und 8 des Scherkopfrahmens 2 fortsetzen, wo sie dann, an die Wölbung der Siebscherfolie angepaßt, gekrümmt verlaufen. Soll der Trockenrasierapparat zum Rasieren verwendet werden, so wird der Rolladen 4 aus seiner in den Figuren 1 und 2 gezeigten Lage auf den Grundapparat 1 zurückgeschoben, bis er die Siebscherfolie zum Rasieren freigibt, wie dies Fig. 3 zeigt, wobei er im vorliegenden Fall so weit zurückgeschoben ist, daß auch der Scherkopfrahmen 2 freigegeben ist, damit dieser, beispielsweise für Reinigungszwecke oder zum Austausch der an den Längsstegen 9 des Scherkopfrahmens 2 gehaltenen Siebscherfolie 10, vom Grundapparat 1 abgenommen werden kann. An einen solchen Rollladen 4 werden die Anforderungen gestellt, daß er einerseits in Querrichtung eine gute Stabilität aufweist, damit er die Siebscherfolie 10 sicher schützen kann, aber andererseits in Längsrichtung gut flexibel ist, um sich dem Verlauf einer auch relativ stark gewölbten Siebscherfolie 10 anpassen zu können. Um solche Anforderungen zu erfüllen, besteht der Rolladen beispielsweise aus einem elastischen Träger und mit diesem verbundenen, mit Abstand zueinander liegenden Querstegen.FIGS. 1 and 2 show a dry shaving apparatus which has a basic apparatus 1 and a shaving head frame 2 placed thereon, which together form an apparatus housing 3. The shaving head frame 2 is in a manner not shown here, for example with at least a resilient latch, releasably held on the base 1. Such a shaving head frame serves to hold a curved sieve shaving foil which is completely covered by a roller shutter 4 in FIGS. 1 and 2 in order to protect the sieve shear foil when the dry shaving apparatus is not in use. This roller shutter 4 is arranged displaceably on the apparatus housing 3, wherein it is guided laterally on both sides in the groove-shaped guides 5 and 6 provided on the apparatus housing 3, indicated in FIGS. 1 and 2 by dashed lines. The roller shutter 4 can be pushed from the basic apparatus 1 over the shaving head frame 2 and the screen shaving foil, for which purpose the guides 5 and 6 for the roller shutter from the basic apparatus 1 continue in the side walls 7 and 8 of the shaving head frame 2, where they then, on the curvature of the Screen shaving foil adjusted, curved. If the dry shaving apparatus is to be used for shaving, the roller shutter 4 is pushed back from its position shown in FIGS. 1 and 2 onto the base apparatus 1 until it releases the shaving foil for shaving, as shown in FIG. 3, in the present case as it is is pushed far back that the shaving head frame 2 is released so that it can be removed from the basic apparatus 1, for example for cleaning purposes or for exchanging the screen shaving foil 10 held on the longitudinal webs 9 of the shaving head frame 2. Such a roller shutter 4 is subject to the requirements that it has good stability in the transverse direction so that it can reliably protect the screen shear film 10, but on the other hand is well flexible in the longitudinal direction in order to adapt to the course of a screen sheave 10 which is also relatively strongly curved can. In order to meet such requirements, the roller shutter consists, for example, of an elastic support and transverse webs connected to it and spaced apart from one another.

Ein solcher Rolladen soll am Apparategehäuse leichtgängig verschiebbar sein und bei seinem Verschieben das Apparategehäuse nicht beschädigen, insbesondere zerkratzen. Um dies zu erreichen ist vorgesehen, daß die dem Apparategehäuse 3 zugewandte Wandfläche des Rolladens 4 mit Abstand zum Apparategehäuse 3 verläuft und daß zwischen dem Rolladen 4 und dem Apparategehäuse 3 mindestens eine Gleitführung wirksam ist, die einen in der Verschiebungsrichtung des Rolladens abschnittsweise örtlich begrenzten Berührungsverlauf zwischen dem Rolladen 4 und dem Apparategehäuse 3 ergibt.Such a roller shutter should be able to be moved easily on the apparatus housing and should not damage, in particular scratch, the apparatus housing when it is moved. To achieve this, it is provided that the wall surface of the roller shutter 4 facing the appliance housing 3 runs at a distance from the appliance housing 3 and that between the roller shutter 4 and the Apparatus housing 3 is effective at least one sliding guide, which results in a locally limited contact course between the roller shutter 4 and the apparatus housing 3 in the displacement direction of the roller shutter.

Wie Fig. 4 erkennen läßt, die einen Ausschnitt um den Bereich der Führung 5 zeigt, sind die nutförmigen Führungen 5 und 6 für die beidseitige seitliche Führung des Rolladens 4, in die dieser beispielsweise mit an ihm vorgesehenen seitlichen, in Fig. 5 dargestellten Ansätzen 11 eingreift, in vom Apparategehäuse 3 seitlich hochgezogenen Wandabschnitten 12 und 13 desselben auf einem derartigen Niveau angeordnet, daß die dem Apparategehäuse 3 zugewandte Wandfläche 14 des Rollladens 4 mit Abstand zum Apparategehäuse 3 verläuft. Dieser Abstand, der in Fig. 4 mit a bezeichnet ist, wird so groß gewählt, daß zwischen der dem Apparategehäuse 3 zugewandten Wandfläche 14 des Rolladens 4 und dem Apparategehäuse 3 mit Sicherheit keine großflächige Berührung stattfindet, wodurch der Rolladen 4 ohne größere Reibung leichtgängig entlang dem Apparategehäuse 3 verschiebbar ist, wobei es auch zu keiner Beschädigung des Apparategehäuses 3, insbesondere keinem Zerkratzen desselben, kommen kann.As can be seen in FIG. 4, which shows a section around the region of the guide 5, the groove-shaped guides 5 and 6 are for the lateral guidance of the roller shutter 4, into which the latter is, for example, provided with lateral approaches shown in FIG. 5 11 engages in wall sections 12 and 13 of the device housing 3, which are laterally raised at such a level, that the wall surface 14 of the roller shutter 4 facing the device housing 3 extends at a distance from the device housing 3. This distance, which is denoted by a in Fig. 4, is chosen so large that between the wall surface 14 of the roller shutter 4 facing the appliance housing 3 and the appliance housing 3 there is certainly no large-area contact, as a result of which the roller shutter 4 runs smoothly without major friction the apparatus housing 3 is displaceable, and there can also be no damage to the apparatus housing 3, in particular no scratching thereof.

Weiters ist vorgesehen, daß zwischen dem Rolladen 4 und dem Apparategehäuse 3 Gleitführungen wirksam sind, die beim vorliegenden Ausführungsbeispiel durch zwei am Apparategehäuse 3 vorgesehene Rippen 15 und 16 gebildet sind, die in der Verschiebungsrichtung des Rolladens verlaufen und sich auch über die Längsstege 9 des Scherkopfrahmens 2 erstrecken, wie aus Fig. 3 ersichtlich ist. Auf diesen Rippen 15 und 16 liegt der Rolladen 4 mit seiner dem Apparategehäuse 3 zugewandten Wandfläche 14 gleitend auf, wodurch sich ein nur örtlich begrenzter Berührungsverlauf zwischen dem Rolladen 4 und dem Apparategehäuse 3 ergibt, da der Rolladen und das Apparategehäuse nur über relativ kleine Flächenabschnitte miteinander in Berührung stehen. Auf diese Weise bilden die Rippen 15 und 16 örtlich begrenzte Unterstützungen für den Rolladen 4, die seine dem Apparategehäuse 3 zugewandte Wandfläche 14 sicher mit Abstand zum Apparategehäuse 3 halten. Solche Unterstützungen sind deshalb wichtig, damit sich der Rolladen 4 unter dem von Hand aus auf ihn ausgeübten Druck, bei seinem Verschieben entlang des Apparategehäuses 3, nicht durchbiegen kann, so daß er stets den vorgesehenen Abstand a zum Apparategehäuse einhält.It is further provided that between the roller shutter 4 and the apparatus housing 3 slide guides are effective, which in the present embodiment are formed by two ribs 15 and 16 provided on the apparatus housing 3, which run in the direction of displacement of the roller shutter and also extend over the longitudinal webs 9 of the shaving head frame 2 extend, as can be seen from Fig. 3. On these ribs 15 and 16, the roller shutter 4 with its wall surface 14 facing the appliance housing 3 slidably, which results in a locally limited course of contact between the roller shutter 4 and the appliance housing 3, since the roller shutter and the appliance housing only have relatively small surface sections with one another to be in contact. In this way, the ribs 15 and 16 form locally limited supports for the roller shutter 4, which keep its wall surface 14 facing the apparatus housing 3 safely at a distance from the apparatus housing 3. Such supports are therefore important so that the roller shutter 4 under the pressure exerted on it by hand, when moving along the apparatus housing 3, can not bend, so that it always maintains the intended distance a to the apparatus housing.

Dadurch, daß im vorliegenden Fall die Rippen 15 und 16 am Apparategehäuse angeordnet sind, ist erreicht, daß sie ebenso wie das Apparategehäuse 3 aus einem relativ harten Material bestehen, was eine gute Gleitführung und praktisch keinen Verschleiß mit sich bringt. Da das für einen Rolladen verwendete Material in der Regel nicht so hart ist, wie das für das Apparategehäuse verwendete Material, könnte es dazu kommen, daß sich die Rippen 15 und 16 in die dem Apparategehäuse 3 zugewandte Wandfläche 14 des Rolladens 4 eingraben, wodurch nicht mehr sichergestellt wäre, daß der Rolladen im gewünschten Abstand zum Apparategehäuse verläuft. Davon ist insbesondere der Bereich des von der Siebscherfolie 10 abgewandten Endes des Rolladens 4 betroffen, der praktischerweise zum Verschieben des Rolladens von Hand aus ergriffen und dadurch auf ihn Druck ausgeübt wird. Dieser Endbereich des Rolladens kann auch speziell als Griffteil 17 ausgebildet sein. In diesem Zusammenhang hat sich als besonders vorteilhaft erwiesen, wenn in diesem Endbereich des Rolladens 4, an seiner dem Apparategehäuse 3 zugewandten Wandfläche 14, eine Stahlfolie 18 angebracht ist, wie dies Fig. 5 zeigt. Auf diese Weise wird am Rolladen 4 eine harte Auflagefläche für die Rippen 15 und 16 erhalten, die für gute Gleiteigenschaften sorgt und keinem Verschleiß unterliegt. Selbstverständlich wäre es auch möglich, auf der ganzen dem Apparategehäuse 3 zugewandten Wandfläche 14 des Rolladens 4 eine Stahlfolie anzubringen. Beim vorliegenden Ausführungsbeispiel erstreckt sich die Stahlfolie 18 im wesentlichen über die ganze Breite des Rolladens 4, wodurch ihr ein sicherer Halt am Rolladen gegeben wird. An sich wäre es aber auch möglich, nur unmittelbar im Bereich der Rippen 15 und 16 einzelne Stahlfolienabschnitte an der Wandfläche 14 des Rolladens 4 anzubringen.The fact that in the present case the ribs 15 and 16 are arranged on the apparatus housing means that, like the apparatus housing 3, they consist of a relatively hard material, which results in good sliding guidance and practically no wear. Since the material used for a roller shutter is generally not as hard as the material used for the apparatus housing, it could happen that the ribs 15 and 16 dig into the wall surface 14 of the roller shutter 4 facing the apparatus housing 3, which does not more would be ensured that the roller shutter runs at the desired distance from the apparatus housing. This affects in particular the area of the end of the roller shutter 4 facing away from the screen shear foil 10, which is conveniently gripped by hand to move the roller shutter and thereby exerts pressure on it. This end region of the roller shutter can also be designed specifically as a handle part 17. In this context, it has proven to be particularly advantageous if a steel foil 18 is attached in this end region of the roller shutter 4, on its wall surface 14 facing the apparatus housing 3, as shown in FIG. 5. In this way, a hard bearing surface for the ribs 15 and 16 is obtained on the roller shutter 4, which ensures good sliding properties and is not subject to wear. Of course, it would also be possible to apply a steel foil to the entire wall surface 14 of the roller shutter 4 facing the apparatus housing 3. In the present exemplary embodiment, the steel foil 18 extends essentially over the entire width of the roller shutter 4, which gives it a secure hold on the roller shutter. As such, however, it would also be possible to attach individual steel foil sections to the wall surface 14 of the roller shutter 4 only in the area of the ribs 15 and 16.

Beim Ausführungsbeispiel nach Fig. 6 sind als Gleitführungen ebenfalls Rippen am Apparategehäuse 3 vorgesehen, und zwar sind es hier drei Rippen 19, 20 und 21, die in einem sich kreuzenden sternförmigen Muster angeordnet sind, wobei sie wirkungsmäßig im wesentlichen in der Verschiebungsrichtung des Rolladens 4 orientiert sind. Die Wirkungsweise dieser Rippen 19, 20 und 21 ist analog zu der Wirkungsweise der Rippen 15 und 16 des zuvor beschriebenen Ausführungsbeispieles. Falls erwünscht, könnte auch noch eine weitere, quer durch den Sternpunkt verlaufende Rippe vorgesehen sein. Selbstverständlich wären auch noch andere Muster von Rippen, die wirkungsmäßig im wesentlichen in der Verschiebungsrichtung des Rolladens orientiert sind, möglich, wie beispielsweise in der Verschiebungsrichtung des Rolladens wellenförmig verlaufende Rippen.In the embodiment according to FIG. 6, ribs are also provided on the apparatus housing 3 as sliding guides, namely here there are three ribs 19, 20 and 21, which are arranged in a crossing star-shaped pattern, their effectiveness essentially in the direction of displacement the shutter 4 are oriented. The operation of these ribs 19, 20 and 21 is analogous to the operation of the ribs 15 and 16 of the previously described embodiment. If desired, a further rib running across the star point could also be provided. Of course, other patterns of ribs which are essentially oriented in the direction of displacement of the roller shutter would also be possible, such as, for example, ribs which undulate in the direction of displacement of the roller shutter.

Beim Ausführungsbeispiel nach Fig. 7 sind zwei Gleitführungen vorgesehen, die durch in der Verschiebungsrichtung des Rolladens 4 hintereinander liegende, aus dem Apparategehäuse 3 herausragende Wälzkörper, im vorliegenden Fall Kugeln, gebildet sind. Die eine Gleitführung besteht dabei aus den Kugeln 22, 23 und 24 und die andere Gleitführung aus den Kugeln 25, 26 und 27. Auf diese Weise ergeben die Gleitführungen einen abschnittsweise örtlich begrenzten Berührungsverlauf zwischen dem Rolladen 4 und dem Apparategehäuse 3, bei dem der Rolladen und das Apparategehäuse über besonders kleine Flächenabschnitte miteinander in Berührung stehen, entsprechend den aus dem Apparategehäuse herausragenden Kugelkalotten. Fig. 8 läßt die Anordnung der Kugeln, beispielsweise der Kugel 22, im Apparategehäuse 3 erkennen, wobei jede der Kugeln in einem am Apparategehäuse 3 vorgesehenen, von einem Deckel 28 abgeschlossenen Käfig 29 aufgenommen ist und unter der Wirkung einer Feder 30 aus einer im Apparategehäuse 3 vorgesehenen Öffnung 31 aus demselben kalottenförmig herausgedrückt wird.In the exemplary embodiment according to FIG. 7, two sliding guides are provided, which are formed by rolling elements, in the present case balls, which lie one behind the other in the displacement direction of the roller shutter 4 and protrude from the apparatus housing 3. One sliding guide consists of balls 22, 23 and 24 and the other sliding guide consists of balls 25, 26 and 27. In this way, the sliding guides result in a locally limited contact path between the roller shutter 4 and the apparatus housing 3, in which the roller shutter and the apparatus housing are in contact with one another via particularly small surface sections, corresponding to the spherical caps projecting from the apparatus housing. Fig. 8 shows the arrangement of the balls, for example the ball 22, in the apparatus housing 3, each of the balls being accommodated in a cage 29 provided on the apparatus housing 3 and closed by a cover 28 and under the action of a spring 30 from a in the apparatus housing 3 provided opening 31 is pressed out of the same dome-shaped.

Bei den hier vorliegenden Gleitführungen hat sich als vorteilhaft erwiesen, wenn an der dem Apparategehäuse 3 zugefwandten Wandfläche 14 des Rolladens 4 in der Verschiebungsrichtung desselben verlaufende, den beiden Gleitführungen zugeordnete Rinnen 32 und 33 vorgesehen sind, in welche die am Apparategehäuse 3 angeordneten Kugeln der beiden Gleitführungen eingreifen. Hiedurch werden die Eigenschaften der Gleitführungen für den Rolladen verbessert, wobei gleichzeitig eine Geradführung für den Rolladen 4 bei seinem Verschieben erhalten wird. Die dem Apparategehäuse 3 zugewandte Wandfläche 14 des Rolladens 4 verläuft dabei wieder in einem mit a bezeichneten Abstand zum Apparategehäuse 3.In the case of the slide guides present here, it has proven to be advantageous if, on the wall surface 14 of the roller shutter 4 facing the device housing 3, grooves 32 and 33 are provided, which run in the direction of displacement thereof and are assigned to the two slide guides and into which the balls of the two arranged on the device housing 3 are provided Intervene sliding guides. As a result, the properties of the sliding guides for the roller shutters are improved, while at the same time a straight guide for the roller shutter 4 is obtained when it is moved. The wall surface facing the apparatus housing 3 14 of the roller shutter 4 again runs at a distance from the apparatus housing 3 designated by a.

Wie ersichtlich, bestehen eine Reihe von Abwandlungsmöglichkeiten, der im vorstehenden beschriebenen Ausführungsbeispiele, ohne daß dabei der Rahmen der Erfindung verlassen wird. Dies gilt insbesondere für die Anordnung und Ausbildung der zwischen dem Rolladen und dem Apparategehäuse wirksamen Gleitführungen.As can be seen, there are a number of possible modifications of the exemplary embodiments described above, without thereby leaving the scope of the invention. This applies in particular to the arrangement and design of the sliding guides effective between the roller shutter and the apparatus housing.

Claims (6)

1. A dry-shaving apparatus comprising a shaving-head frame (2) which carries a shear-foil (10) and which is detachably secured to a basic apparatus, which dry-shaving apparatus comprises at least one shutter (4) which is slidable on the apparatus housing (3) for optionally covering or exposing the shaving-head frame (2) of the dry-shaving apparatus, and which is laterally guided at both sides in groove-shaped-guides (5, 6) on the apparatus housing (3), wherein the wall surface (14) of the shutter (4) which faces the apparatus housing (3) is spaced at a distance (a) from the apparatus housing and wherein at least one sliding guide means (15, 16; 19-27) acts between the wall surface (14) of the shutter (4) which faces the apparatus housing (3) and the apparatus housing to provide localised areas of contact between the shutter (4) and the apparatus housing (3) in the sliding direction of the shutter.
2. A dry-shaving apparatus as claimed in Claim 1, characterized in that the sliding guide means comprises at east one rib (15, 16; 19, 20, 21) which is oriented to act substantially in the sliding direction of the shutter (4) (Figs. 1-5; 6).
3. A dry-shaving apparatus as claimed in Claim 2, characterized in that the rib (15, 16; 19, 20, 21) is arranged on the apparatus housing (3) (Figs. 1-5; 6).
4. A dry-shaving apparatus as claimed in Claim 3, characterized in that the wall surface (14) of the shutter (4) which faces the apparatus housing (3) is provided with a steel foil (18) in the area of the shutter end which is remote from the shear foil (10), the shutter sliding on the rib (15, 16) with said steel foil (Figs. 1-5).
5. A dry-shaving apparatus as claimed in Claim 1, characterized in that the sliding guide means comprises separate rolling elements (22, 23, 24; 25, 26, 27) which project from the apparatus housing and which are disposed in line with each other in the sliding direction of the shutter (4) (Figs. 7-9).
6. A dry-shaving apparatus as claimed in Claim 5, characterized in that the wall surface (14) of the shutter (4) which faces the apparatus housing (3) is provided with a groove (32; 33) which extends in the sliding direction of said shutter and which is engaged by the rolling elements (22, 23, 24; 25, 26, 27) of the sliding guide means arranged on the apparatus housing.
EP88200755A 1987-04-24 1988-04-20 Dry shaver with at least one roll-type cover, slidable on the housing of the apparatus Expired - Lifetime EP0290071B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0102687A AT386788B (en) 1987-04-24 1987-04-24 DRY SHAVER WITH AT LEAST ONE ROLLER SHUTTER SLIDING ON THE APPARATUS HOUSE
AT1026/87 1987-04-24

Publications (2)

Publication Number Publication Date
EP0290071A1 EP0290071A1 (en) 1988-11-09
EP0290071B1 true EP0290071B1 (en) 1991-07-03

Family

ID=3505090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88200755A Expired - Lifetime EP0290071B1 (en) 1987-04-24 1988-04-20 Dry shaver with at least one roll-type cover, slidable on the housing of the apparatus

Country Status (10)

Country Link
US (1) US4926551A (en)
EP (1) EP0290071B1 (en)
JP (1) JP2557944B2 (en)
KR (1) KR970001154B1 (en)
CN (1) CN1010468B (en)
AT (1) AT386788B (en)
AU (1) AU612943B2 (en)
CA (1) CA1314390C (en)
DE (2) DE8804972U1 (en)
ES (1) ES2023699B3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398721B (en) * 1992-05-19 1995-01-25 Koninkl Philips Electronics Nv SHAVER WITH AN ADJUSTABLE TOOTH CUTTER
USD379012S (en) * 1994-11-07 1997-04-29 U.S. Philips Corporation Dry shaver

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB876245A (en) * 1959-01-09 1961-08-30 Walter Rowland Hart Dry shaving appliances
DE1122410B (en) * 1960-09-05 1962-01-18 Ernst Moeckl Cap for shaving heads of electric razors
US3143796A (en) * 1963-02-08 1964-08-11 Ronson Corp Electric head construction with movable slide cover
DE1553764A1 (en) * 1967-01-13 1971-06-24 Ernst Moeckl Razor

Also Published As

Publication number Publication date
CN88103017A (en) 1988-11-02
AU1511688A (en) 1988-10-27
CA1314390C (en) 1993-03-16
CN1010468B (en) 1990-11-21
JP2557944B2 (en) 1996-11-27
US4926551A (en) 1990-05-22
ATA102687A (en) 1988-03-15
JPS63283678A (en) 1988-11-21
DE3863479D1 (en) 1991-08-08
ES2023699B3 (en) 1992-02-01
DE8804972U1 (en) 1988-06-09
KR970001154B1 (en) 1997-01-29
KR880012319A (en) 1988-11-26
AU612943B2 (en) 1991-07-18
EP0290071A1 (en) 1988-11-09
AT386788B (en) 1988-10-10

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