EP0761393B1 - Vorrichtung zur Vorbereitung der Haut vor der Rasur - Google Patents

Vorrichtung zur Vorbereitung der Haut vor der Rasur Download PDF

Info

Publication number
EP0761393B1
EP0761393B1 EP19960890066 EP96890066A EP0761393B1 EP 0761393 B1 EP0761393 B1 EP 0761393B1 EP 19960890066 EP19960890066 EP 19960890066 EP 96890066 A EP96890066 A EP 96890066A EP 0761393 B1 EP0761393 B1 EP 0761393B1
Authority
EP
European Patent Office
Prior art keywords
cap
profile features
conditioning
plane
features
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
EP19960890066
Other languages
English (en)
French (fr)
Other versions
EP0761393A2 (de
EP0761393A3 (de
Inventor
Friedrich SCHÄCHTER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0761393A2 publication Critical patent/EP0761393A2/de
Publication of EP0761393A3 publication Critical patent/EP0761393A3/de
Application granted granted Critical
Publication of EP0761393B1 publication Critical patent/EP0761393B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B26B21/4037—Details or parts covering the blades, e.g. caps for storage; Attachments
    • 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
    • B26B21/4012—Housing details, e.g. for cartridges
    • B26B21/4018—Guard elements

Definitions

  • the invention relates to new devices used for conditioning hairy skin, especially facial skin, before shaving, according to the preamble of claim 1.
  • Most wet shaving instruments including disposable shavers, are provided with means protecting the cutting edge of the razor blade from being damaged from the moment when the shaver is leaving the assembly machine in the factory until it gets to the user.
  • these means are protection caps attached over the front portion of the shaver head.
  • Said head comprises a supporting part, at least one razor blade, which is sandwiched between said supporting part and a cover part.
  • Such caps are used with the shaving instruments disclosed in the US 4,502,217 A and the EP 0 397 638 A although they are not mentioned in said publications.
  • Snapping means are known, suitable for easy removal of such protection caps whenever the shaver is to be used for shaving, but providing secure attachment for protection of the blade edge, when the shaver is not used.
  • These protection caps can often be snapped on in two opposed positions in order to make the automatic assembly easier and are usually injection molded from thermoplastic material.
  • the thimble-like device has problems with its lifetime, one should not forget how abrasive hairy skin is, and it has problems with the convenience of its use.
  • a finger has to be inserted in the recess, but if the finger or the recess is not dry, the grip is not sufficient for an easy use. Additionally, the device must be properly cleaned and dried on its inside as well as on its outside each time after use.
  • the other devices may only be used during shaving, because the guard bars with the conditioning features are only some Millimeters in front of the cutting edge, making it impossible to use the devices independently from a shaving operation.
  • the invention proposes to provide profile features on a protection cap, suitable for conditioning the skin prior to shaving. Therefore, such a “conditioning & protection cap” has, according to the invention, a double purpose: to be used as a skin and hair conditioning device and to protect and shield the razor blade.
  • Said profile features according to the invention are provided to cause the skin and the underlying tissue to be kneaded and gently massaged.
  • said profile features cause swiftly passing creases and waves on the surface.
  • the hair of the beard is lifted up, adjusted, freed and prepared for the shaving act following the conditioning.
  • the treatment provided by said profile features during said conditioning enables the razor blade edge to cut the hair close to the skin surface during said subsequent shaving act resulting in a closer shave.
  • said conditioning exercises and stimulates the facial muscles and the muscles associated with the hair follicles and, in addition, enhances the blood circulation.
  • the "conditioning & protection cap” When attached to the front portion of the shaver, the "conditioning & protection cap” must be attached with sufficient restraint to permit conditioning without disturbing vibrations or wavering.
  • said part could optionally be made from a material selected solely for the conditioning purpose.
  • the conditioning device could be made of materials ranging from soft rubberlike to rigid substances and/or could be coated or surface treated, which for example affects friction.
  • profile features provided on the cap according to the invention have a certain similarity to features normally used on guard bars of one-way shavers, but the choice of characteristics of said profile features, in an inventive step, take advantage of the fact, that there is no razor blade edge in immediate vicinity of said profile features.
  • guard bars are arranged close to and parallel with razor blade edges.
  • the purpose of the guard bar is to stretch the skin in order to prevent the formation of swiftly forming creases or waves when the shaver under light pressure is drawn over the skin. If the convex top of such creases or waves is formed in the space between the guard bar and the razor blade edge, nicking (minute cuts) easily occurs.
  • guard bars of shavers must be limited in profile depth in order to avoid nicking.
  • a type of profile found on most guard bars consists of a number of small steps arranged parallel with and in immediate vicinity to the razor blade edge.
  • the razor blade is clamped against a supporting base part by means of a cover part, the front end of which is arranged parallel with and in immediate vicinity of the blade edge.
  • the exact location of the razor blade edge relative guard bar and cover, which, during shaving are in contact with the skin, provides the "shaving geometry”.
  • the bar stretches the skin ahead of the edge, while the cover should glide easily over the skin surface and not contribute to promoting skin formations prone to nicking.
  • Such profiles are of limited efficiency for lifting up and adjusting hair in front of an approaching razor blade edge. Shaving "against the grain", which may help freeing some hair in "problem regions" (the location varies from person to person) is considered a substantial risk for nicking.
  • the cap of the invention which has profile features provided on its surface, is used for the conditioning, when it is attached over the front portion of the shaver head, for the purpose of shielding the blade edge.
  • the razor blade edge is shielded during conditioning, one can, without risk nicking, push harder and more vigorously than in normal shaving as well as move in arbitrary directions, in order to lift up and adjust the hair.
  • the profile features for conditioning provided on the cap can be designed, for example, to comprise features with greater profile height, such profiles having wave shaped steps, teeth, calottes or the like. Conditioning also provides advantages when applied prior to shaving longer face or body hair.
  • the conditioning profile on said cap according to the invention when attached to the front end of the shaver head and shielding the blade, lends confidence to treat "problem regions” and to move "against the grain” until one has freed the hair to be shaved.
  • US A 4,502,217 discloses a shaving instrument comprising a guard bar in front of a razor blade edge.
  • the guard bar on its surface area intended for coming into contact with the skin, is provided with small projections, having, for example, file-type or rasp-type teeth with sharp edges.
  • Such teeth are formed by plastic deformation and displacement of portions of the surface area of the guard bar.
  • the length of the sharp edges vary between 0.3 and 1.0 mm, projecting from the surface of the guard bar between 0.03 and 0.12 mm.
  • Such limitations in size are obviously provided to avoid excessive undulation and irritation of the skin.
  • the instrument can also be used without a blade either for massaging the facial skin or for adjusting the hairs of a beard prior to shaving.
  • the invention disclosed in the present application proposes to provide a protection cap for the razor blade edge with conditioning features such as parallel steps or ridges, wave shaped profiles, file-type or rasp-type teeth, calottes or the like. Said features are provided on at least that part of said cap, located in a region in contact with the face when the shaver (with the cap shielding the blade) is guided over the skin in the same way as typical during shaving.
  • moldmaking techniques for injection molding allow to choose suitable radii of the edges and corners. Such radii, preferably in a size of 0.02 to 0.3 mm are not depicted realistically in the drawings.
  • the distance between steps or ridges preferably varies from 0.2 to 1.0 mm, and the pitch of waves or teeth preferably from 1.0 to 3.0 mm.
  • Fig. 1 comprises a shaver with a head 1, a handle 2 and a cover part 3.
  • a razor blade 5 is firmly clamped between a supporting part 29 and a cover part 3.
  • a guard bar 6 is provided in front of the edge 5' of the razor blade 5.
  • a cap 4 is shown at a small distance from the shaver in a position, which corresponds to its position some moments after having been taken off from the shaver or some moments prior to its mounting on the shaver.
  • Cap 4 has, preferably on its foremost part 33, profile features 7 according to the invention, which are used for massaging the skin and/or adjusting the hairs, when treated with these profile features.
  • the profile features 7, shown in Figs. 1 and 2 only schematically, consist of multiple steps or ridges 14, located in a region oriented and arranged parallel to the cutting edge, when the cap is mounted on the shaver.
  • the orientation of the profile features 7 is defined by the intersection line between the front plane 13 and one of the side planes 15.
  • two such profile features 7, 7' can be provided, either identical in shape and structure, or different. This allows the user to choose, according to his personal experience, between two conditioning features with different characteristics. Depending on how the cap 4 is mounted on the shaving instrument, the one or the other of such features is used for conditioning.
  • the shaving instrument is moved along the skin similar to the movements during actual shaving, but with the cap 4 securely attached over its place on the front portion of the shaver head as it is shown in Fig. 3. From this figure it is easy to see, that the handling of the device according to the invention corresponds essentially to the handling of a shaver during actual shaving. Since the blade edge is shielded during conditioning, one can move with confidence in arbitrary directions or even "against the grain"
  • Fig. 4 shows a cap with ridges similar to the ridges of the cap according to Fig. 2. A difference is, that the ridges 18 and 19 according to Fig. 4 are not rectilinear but undulated, intended to amplify the massaging and hair-lifting effect.
  • the ridges 19 undulate in planes parallel to the side planes 15, the ridges 18 undulate in planes parallel to front plane 13.
  • the ridges 18 are shown in top view on the side figure to Fig. 4.
  • profile features 7 and/or 7' is shown in Fig. 5, comprising rows 8, 9, 10 of teeth 11 with edges 12, the rows 8 to 10 oriented parallel to the cutting edge of the razor blade when the cap 4 is mounted on a shaver.
  • the length of each individual tooth 11 is preferably about 0,5 to 1,5mm.
  • the space between the teeth is 0.5 to 2.0mm
  • the rows are arranged with a stepheight of 0.3 to 1.5mm substantially corresponding to the height of the teeth.
  • the front-most teeth 21 and the rear-most teeth 22 of Fig. 5 protrude from the surfaces 13 and 15, respectively.
  • All edges 12 have preferably small radii between 0.03 and 0.15 mm.
  • a side figure to Fig. 5 shows a front view of a part of some of the teeth 11 with their ridges 12.
  • the profile features 7, 7' can be formed either by an injection molding process or by subsequent forming, e.g. coining or the like.
  • the conditioning features can be made from a material, e.g. polystyrene, polypropylene, having a lifetime corresponding at least to the useful lifetime of the razor blade edge. This means, that the provision of two different features on one device provide the user with a conditioning device which outlasts the razor blade edge, even if the user prefers only one side. Provided, the conditioning features are formed directly into the protection cap, the costs are zero except for the tooling.
  • a material e.g. polystyrene, polypropylene
  • Fig. 6 shows, in a perspective view and in a cross section, a further variation of the invention.
  • the profile features 7, 7' are formed on a separate part 16, which part can be mounted on a cap.
  • this separate part 16 is riveted to a cap 17.
  • the separate part 16 itself has at least one protrusion 23 which fits in a corresponding hole of the cap and is plastically deformed during the riveting procedure. The protrusion and the hole are both formed during the injection molding of the respective parts.
  • This embodiment has the advantage that the separate part 16, including the profile features, can be produced from a material which is especially suitable for the conditioning procedure.
  • the profile features on the separate part 16 can, of course, have the shape of the profile features shown in Figs. 4 and/or 5.
  • Fig. 7 shows, in a perspective view and in a cross-sectional view according to the dash-dotted-line, profile features consisting of a plurality of substantially spherical calottes 20 arranged in rows, offset patterns or the like on an essentially plane 31 part of a conditioning device.
  • Each calotte projects preferably 0.2 to 0.7 mm from the surrounding plane and includes, at its base, an angle ⁇ of 15° to 90°, more preferably of 40° to 60° with said plane.
  • the calottes cover of about 20 % to about 70 % of the total area constituting said profile features, but the packing density can be increased to the maximum, where all the adjacent calottes are in contact with one another.
  • Figs. 8 to 10 show profile features similar to the profile features of Fig. 7 but consisting of a plurality of elongated calottes 32. Their geometrical relations with the surrounding plane 31 and their degree of packing density are substantially as described above, under Fig. 7.
  • the length of each elongated calotte is between 0.3 to 2 mm, more preferably between 0.5 to 1.5 mm. It is of course, possible to vary the form of such calottes, for example to give them more the form of ellipsoid-calottes.
  • Fig. 8 shows, in a perspective view and in a cross-sectional view according to the dash-dotted-line, a zi-zag-pattern
  • Fig. 9 in a perspective view an aligned pattern with offset-configuration of the calottes
  • Fig. 10 in an perspective view, an aligned pattern with aligned calottes.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Surgical Instruments (AREA)

Claims (12)

  1. Vorrichtung, umfassend ein Rasiergerät und eine Kappe (4), die auf das Rasiergerät aufsetzbar ist, um die Rasierklinge zu schützen, dadurch gekennzeichnet, daß zumindest ein Teil der Oberfläche der Kappe (4) Profilelemente (7, 7'), wie längliche oder gewellte Kanten (14, 18, 19) oder feilenartige oder raspelartige Zähne (11, 22) sphärische oder längliche Kalotten (20, 32) oder andere kleine Vorsprünge aufweist, welche Profilelemente zur Behandlung der Haut und/oder der Haare, speziell im Bereich des menschlichen Gesichtes, und ganz speziell vor einer Rasur, dienen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Profilelemente (7, 7') auf einem eigenen Teil (16) vorgesehen sind, der auf der Kappe montiert wird, bevorzugt durch Nieten, Kleben, Schweißen od. ähnl..
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zwei unterschiedliche Profilelemente (7,7') symmetrisch auf der Kappe (4) vorgesehen sind.
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Profilelemente (7, 7') aus zumindest drei Reihen (8, 9, 10), von Zähnen (11) mit Kanten (12) bestehen, wobei jede Reihe und die Kanten im wesentlichen parallel zur Schneide (5') der Rasierklinge (5) verlaufen, wenn die Kappe am Rasiergerät montiert ist.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Länge jeder individuellen Zahnkante (12) vorzugsweise etwa 0,5 bis 1,0 mm beträgt und daß die Zähne (11) innerhalb jeder Reihe (8, 9, 10) einen Abstand von bevorzugt etwa 1,0 mm voneinander aufweisen.
  6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Profilelemente (7, 7') aus parallelen Stufen bestehen.
  7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Profilelemente (7, 7') aus parallelen Graten bestehen.
  8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Profilelemente (7, 7') aus wellenförmigen Profilen (18, 19) bestehen.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Ebene der Wellen der wellenförmigen Profile (18) parallel zu einer Seitenebene (15) der Kappe (4) verläuft.
  10. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Ebene der Wellen der wellenförmigen Profile 19 parallel zu einer Frontebene (13) der Kappe (4) verläuft.
  11. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kalotten (20, 32) etwa 0,2 bis 0,7 mm über die sie umgebende Ebene (31) vorstehen und an ihrer Basis einen Winkel α von 15 bis 19°, bevorzugt von 40 bis 60° mit der Ebene (31) einschließen.
  12. Vorrichtung nach Anspruch 1 oder 11, dadurch gekennzeichnet, daß die Kalotten (20, 32) zwischen etwa 20 bis etwa 70 % der Gesamtfläche bedecken, auf der die Profilelemente (7, 7') ausgebildet sind.
EP19960890066 1995-07-26 1996-04-09 Vorrichtung zur Vorbereitung der Haut vor der Rasur Expired - Lifetime EP0761393B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT127895 1995-07-26
AT127895 1995-07-26
AT1278/95 1995-07-26

Publications (3)

Publication Number Publication Date
EP0761393A2 EP0761393A2 (de) 1997-03-12
EP0761393A3 EP0761393A3 (de) 1999-01-20
EP0761393B1 true EP0761393B1 (de) 2003-02-26

Family

ID=3510430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960890066 Expired - Lifetime EP0761393B1 (de) 1995-07-26 1996-04-09 Vorrichtung zur Vorbereitung der Haut vor der Rasur

Country Status (1)

Country Link
EP (1) EP0761393B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5893213A (en) * 1997-05-12 1999-04-13 Warner-Lambert Company Protective cover for shaving cartridge
US6115902A (en) * 1998-02-13 2000-09-12 Bic Corporation Method of manufacturing a razor
GB2344048A (en) * 1998-11-24 2000-05-31 William Albert Fredericks Improvements in shaving aids
US9802328B2 (en) * 2013-11-13 2017-10-31 The Gillette Company Llc Razor cartridge guard structure
US20160318198A1 (en) * 2015-04-30 2016-11-03 Larry Brazley Razor Attachment
KR20250159952A (ko) * 2024-05-03 2025-11-11 주식회사 도루코 면도기 카트리지 보호구

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB921105A (en) * 1958-05-05 1963-03-13 Thomas Hay Laird Improvements in or relating to hair-erecting devices for use during shaving
AT387744B (de) * 1980-04-10 1989-03-10 Friedrich Schaechter Rasiergeraet
IT8209403A1 (it) * 1981-05-19 1983-11-14 Wilkinson Sword Ltd Complesso di rasatura con lama spostabile fra due posizioni
US4998347A (en) * 1989-05-08 1991-03-12 Schaechter Friedrich Shaving instrument with high energy beam induced microstretch element

Also Published As

Publication number Publication date
EP0761393A2 (de) 1997-03-12
EP0761393A3 (de) 1999-01-20

Similar Documents

Publication Publication Date Title
EP1930135B1 (de) Trockenrasierer
JP6392992B2 (ja) ドライシェーバー
US7730621B2 (en) Shaving foil for a dry shaver
US7739798B2 (en) Dry shaver
RU2752342C2 (ru) Система для срезания волос и насадка
EP1184141B1 (de) Rasierköpfe mit zwischenliegenden Schutzelementen
EP0305866B1 (de) Rasierapparat
US4912846A (en) Disposable razor
CN115023324B (zh) 电动胡须修剪器
US20050172490A1 (en) Double-sided and single-sided shearing devices including ridges
CN115003469B (zh) 切割器系统、电动剃刀或修剪器及制造切割器系统的方法
JP2809779B2 (ja) 安全かみそり
US20080313910A1 (en) Cutter blade assembly and dry shaver for variable height of cut
EP4274715A1 (de) Haarschneidekappe und haarschneidevorrichtung mit kappe
EP0761393B1 (de) Vorrichtung zur Vorbereitung der Haut vor der Rasur
KR200277774Y1 (ko) 눈썹 면도기
JPH05293259A (ja) 往復式電気かみそり
JP2012100865A (ja) 電気かみそり
JPH06343775A (ja) 電気かみそり
KR19990022827U (ko) 면도기의구조
JPS61203991A (ja) 安全カミソリ
JPS5937985B2 (ja) 往復式電気かみそりの刃
HK1113107B (en) Dry shaver

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): FR

AX Request for extension of the european patent

Free format text: AL;LT;LV;SI

RBV Designated contracting states (corrected)

Designated state(s): FR

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): FR

17P Request for examination filed

Effective date: 19990719

17Q First examination report despatched

Effective date: 20011218

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

DAX Request for extension of the european patent (deleted)
GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): FR

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20031127

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20100506

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20111230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110502