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WO2001008856A1 - Systeme de rasage ameliore - Google Patents

Systeme de rasage ameliore Download PDF

Info

Publication number
WO2001008856A1
WO2001008856A1 PCT/US2000/020948 US0020948W WO0108856A1 WO 2001008856 A1 WO2001008856 A1 WO 2001008856A1 US 0020948 W US0020948 W US 0020948W WO 0108856 A1 WO0108856 A1 WO 0108856A1
Authority
WO
WIPO (PCT)
Prior art keywords
apertures
shaving system
field
upturn
edges
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.)
Ceased
Application number
PCT/US2000/020948
Other languages
English (en)
Inventor
Mingchih M. Tseng
Cheng-Jih Li
Alfred Porcaro
Kevin L. Powell
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.)
Gillette Co LLC
Original Assignee
Gillette Co LLC
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 Gillette Co LLC filed Critical Gillette Co LLC
Priority to AU63947/00A priority Critical patent/AU6394700A/en
Publication of WO2001008856A1 publication Critical patent/WO2001008856A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/384—Dry-shaver foils; Manufacture thereof

Definitions

  • the invention relates to shaving systems including a blade member with annular sharpened edges .
  • the invention features in general, a shaving system including a holder and a blade member having a nonlinear sharpened edge having a tip radius less than 400 Angstroms (A) .
  • Particular embodiments of the invention may include one or more of the following features.
  • the sharpened edges have a tip radius below 300 A and preferably between 150 A and 200 A.
  • the edges have a height between 1 and 20 microns (preferably between 5 microns and 15 microns) .
  • the invention features, in general, a shaving system including a holder, and a blade member including a field of apertures secured to the holder.
  • the blade member has a length along a longitudinal axis and a width and a curvature about an axis parallel to the longitudinal axis (e.g., as shown in Fig. 6) .
  • the apertures have sharpened edges with a tip radius below 400 A.
  • Particular embodiments of the invention may include one or more of the following features.
  • the edges have a tip radius below 300 A (preferably between 150 A and 200 A) .
  • the blade member has an average radius of curvature about the axis parallel to a longitudinal axis between 1 and 5 inches, preferably between 1 1/2 and about 2 inches.
  • the invention can also have a curvature about an axis parallel to a width axis that is greater than 2" (preferably 5" or greater) .
  • the field of apertures has between 10 and 50 apertures.
  • the invention features, in general, a shaving system including a holder, and a blade member secured to the holder.
  • the blade member has a field of apertures defining annular sharpened edges.
  • the apertures have different amounts of upturn (or in some cases some apertures could have no upturn) , depending upon the location of the apertures in the field.
  • One area of the field has apertures with sharpened edges that are upturned so as to curve upward, and another area of the field has apertures with sharpened edges that have not been upturned.
  • the blade member is curved about an axis parallel to a width axis (e.g., as shown in Fig. 1) .
  • the area without the upturned edges is at a central area, and there are upturned edges in areas at both sides of the central area.
  • the blade member has an average radius of curvature about an axis parallel to the width axis that is greater than 2" (preferably 5" or greater) .
  • the apertures at the central area can have uplifted (i.e., raised but not curved ) or flat edges. Having more upturn at the side areas of a curved blade member and less (or no) upturn in a central area provides a closer shave where it is needed and avoids irritation at the central region where the shaving force tends to be greater.
  • the upturn edges are provided only in an outer ring of apertures; alternatively, upturn edges can be provided only in the two outer rows .
  • apertures are provided with upturn only on one side of each aperture; e.g., only on the outer edge portions of the two outer rows. The upturned portions could all also be directed in the same direction in a razor that has directional shaving.
  • Embodiments of the invention may include one or more of the following advantages.
  • the use of tip radius below 400 A (preferably less than 300 A and most preferably between 150 A and 200 A) provides for improved shaving.
  • the invention features, in general a shaving system including a holder and a blade member with a field of apertures.
  • the blade member has a length and a width along a width axis, and a curvature about an axis parallel to the width axis (e.g., as shown in Fig. 1) .
  • the apertures define annular sharpened edges with a tip radius below 400 A.
  • the apertures can have a uniform amount of upturn.
  • Fig. 1 is a perspective view of a shaving system.
  • Fig. 2 is a partial vertical sectional view through an aperture with an annular sharpened cutting edge of the Fig. 1 shaving system.
  • Fig. 3 is an enlarged partial sectional view of a cutting edge of an aperture with an uplifted edge in a central area of the blade member of the Fig. 1 system.
  • Fig. 4 is an enlarged sectional view of a sharpened annular cutting edge of an aperture with an upturned edge in a side area of the blade member of the Fig. 1 system.
  • Fig. 5 is a perspective view of an alternative embodiment of a shaving system.
  • Fig. 6 is a perspective view of a further alternative embodiment of a shaving system.
  • shaving system 10 including handle portion 12 that is secured to cap portion 14.
  • Curved metal foil strip 16 is secured to cap portion 14 and has an array of 28 apertures 18 divided into three areas: central area 40, and side areas 42.
  • Skin conditioning member 19 extends around foil strip 18.
  • Shaving system 10, e.g., can have a height of about 6.5 cm, a width of about 5.7 cm and a thickness of about ' 2.4 cm.
  • metal foil strip 16 is, e.g., manufactured of 0.1 mm thick strip steel and has a length of about 4.0 cm and a width of about 1.5 cm.
  • Circular apertures 18 are disposed in three rows that are spaced about 4 mm on center. Each aperture 18 has a diameter of about 3 mm and a circular sharpened edge 20. Alternatively, other numbers of rows, e.g., two or four rows, could be used, and the apertures could be between 1.0 mm and 5 mm in diameter. Also, there could be different numbers of holes; e.g., instead of 28 holes (as in Fig. 1), there could be 25 holes (as in Figs. 5 and 6) , or 22 holes in a three-row design.
  • the body of strip 16 has upper surface 22 and lower surface 24. Surrounding each aperture are annular portions 26, 28 that are inclined with respect to surfaces 22 and 24. Each hole is also surrounded by ground surface 31, which begins at plane 30 (indicated by dashed lines on Figs. 2-4) and is inclined upward to sharpened edge 20. Some upper inclined portions 26 have a sharpened edge 20 that is an uplifted edge 44, as shown in Fig. 3, while others have the ultimate edge 20 turned up further in upturned edge 46, as shown in Fig. 4. (Figs. 3 and 4 are enlarged partial views of the portion indicated by 33 on Fig. 2.) Apertures in central area 40 have uplifted edges 44, whereas apertures in side areas 42 have upturned edges 46.
  • central area 40 could have flat edges. Alternatively, there could be less upturn at the apertures in the central area, and more upturn at the side areas. There could also be gradual change in the amount of upturn in an area or across the field.
  • the height h x of uplifted edge 44, measured from plane 30, is about 7 microns.
  • the height h 2 of upturned edge 46, measured from plane 30, is about 10 microns.
  • the tip radius for edges 44, 46 is below 400 A, and preferably below 300 A (and most preferably 150 A - 200 A) .
  • Uplifted edges 44 and upturned edges 46 could also have heights between 5 microns and 20 microns (preferably between 5 microns and 15 microns) .
  • the foil apertures with sharpened edges are made by a process of piercing, dimpling, hardening, sharpening, deburring, electropolishing, telomer spraying, and sintering to provide flattened or uplifted edges, and potentially further pressing to provide upturned edges.
  • the last step only applies to the apertures in the side regions for the Fig. 1 embodiment; the last step may or may not also apply to the Figs. 5 and 6 embodiments, described below.
  • a press is used to pierce the apertures at 2.8 mm diameter, and then dimple the apertures to a dimpling height of about 0.20 mm and about 20° dimpling angle.
  • the individual blades are then cut from the strip of metal and provided with an curve about an axis parallel to the width dimension of the foil for the Fig. 1 embodiment.
  • the radius of curvature about an axis parallel to a width axis is about 5" in the Fig. l embodiment. It should be greater than 2" and preferably is 5" or greater.
  • the apertures are not perfectly round, but can vary somewhat in circularity and tend to be slightly oblong.
  • the tip radius can also vary somewhat at different locations.
  • the tip radius is less than 400 A, and preferably less than 300 A. Most preferably the tip radius is between 150 A and 200 A.
  • edges can be determined using a three- dimensional imaging surface structure analyzer. Tip radius can be determined using scanning electron microscopy. Upturned edges 46 provide a closer shave than uplifted edges 44. Central area 40 tends to have more shaving force than side areas 42. Having the upturned edges 44 in the side portions only, provides less irritation and improved shaving closeness .
  • shaving system 110 including handle portion 112 that is secured to cap portion 114.
  • Flat metal foil strip 116 is secured to cap portion 114 and has an array of apertures 118, which have the same diameter and tip radius as described for the Fig. 1 embodiment.
  • Apertures 118 can have uplifted edges or upturned edges as described above.
  • shaving system 210 including handle portion 212 and metal foil strip 214, which has an array of apertures 216.
  • Skin conditioning member 218 extends around foil strip 214.
  • Metal foil strip 214 has a curvature about an axis that is parallel to the longitudinal axis of foil strip 216.
  • Apertures 216 have uplifted edges as shown in Fig. 3 and described above. (Alternatively, apertures 216 could have flat edges.) Apertures 216 have the same diameter and tip radius as described for the Fig. 1 embodiment.
  • Metal foil strip 214 is provided with apertures 216 while the strip is flat, as described above.
  • Strip 214 is thereafter provided with a curve about an axis parallel to a length axis and is mounted on handle portion 212.
  • Metal foil strip 214 has a radius of curvature between 1 and 5 inches, preferably between 1 1/2 and about 2 inches.
  • Metal foil strip 214 can also be provided with a curvature in the transverse direction about an axis parallel to a width axis; this transverse curvature should preferably have a radius of curvature greater than 5" (most preferably greater than 15").
  • the apertures could also be provided with upturned and/or uplifted edges.
  • the upturn edges could be provided only in an outer ring of apertures, or upturn edges could be provided only in the two outer rows .
  • the interior apertures could have uplift.
  • apertures could be provided with upturn only on one side of each aperture ? e.g., upturn could be provided only on the outer edge portions of the two outer rows.
  • the upturned portions could all also be directed in the same direction in a razor that has directional shaving.
  • Apertures could also be provided with uplift at only exterior apertures.

Landscapes

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

Abstract

L'invention concerne un système de rasage comprenant un manche et un élément de lame fixé à ce manche. L'élément de lame comprend au moins un rebord tranchant non linéaire dont le rayon est inférieur à 400 Å. L'invention concerne également un élément de lame incurvé sur un axe longitudinal et comprenant un champ d'ouvertures définissant des rebords tranchants annulaires. L'invention se rapporte enfin à un élément de lame pourvu d'un champ d'ouvertures à rebords saillants en quantités diverses (certaines ouvertures pouvant ne pas comprendre de rebord saillant).
PCT/US2000/020948 1999-08-03 2000-08-01 Systeme de rasage ameliore Ceased WO2001008856A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU63947/00A AU6394700A (en) 1999-08-03 2000-08-01 Improved shaving system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US36833099A 1999-08-03 1999-08-03
US09/368,330 1999-08-03

Publications (1)

Publication Number Publication Date
WO2001008856A1 true WO2001008856A1 (fr) 2001-02-08

Family

ID=23450779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/020948 Ceased WO2001008856A1 (fr) 1999-08-03 2000-08-01 Systeme de rasage ameliore

Country Status (2)

Country Link
AU (1) AU6394700A (fr)
WO (1) WO2001008856A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010142775A1 (fr) * 2009-06-10 2010-12-16 Robert Vollmer Dispositif et procédé de production d'une feuille pour lame de coupe pour un rasoir, feuille pour lame de coupe correspondante et rasoir correspondant
EP4079471A1 (fr) 2021-04-20 2022-10-26 GFD Gesellschaft für Diamantprodukte mbH Élément de coupe et dispositif d'épilation
EP4079472A1 (fr) 2021-04-20 2022-10-26 GFD Gesellschaft für Diamantprodukte mbH Élément de coupe avec des segments de coupe asymétriques
EP4079473A1 (fr) 2021-04-20 2022-10-26 GFD Gesellschaft für Diamantprodukte mbH Élément de coupe et dispositif d'épilation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5088195A (en) * 1990-07-30 1992-02-18 Lazarshik Daniel B Shaving system
US5669144A (en) * 1991-11-15 1997-09-23 The Gillette Company Razor blade technology
EP0917934A1 (fr) * 1997-11-19 1999-05-26 Warner-Lambert Company Système de rasage à trous et procédé de sa fabrication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5088195A (en) * 1990-07-30 1992-02-18 Lazarshik Daniel B Shaving system
US5669144A (en) * 1991-11-15 1997-09-23 The Gillette Company Razor blade technology
EP0917934A1 (fr) * 1997-11-19 1999-05-26 Warner-Lambert Company Système de rasage à trous et procédé de sa fabrication

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010142775A1 (fr) * 2009-06-10 2010-12-16 Robert Vollmer Dispositif et procédé de production d'une feuille pour lame de coupe pour un rasoir, feuille pour lame de coupe correspondante et rasoir correspondant
EP4079471A1 (fr) 2021-04-20 2022-10-26 GFD Gesellschaft für Diamantprodukte mbH Élément de coupe et dispositif d'épilation
EP4079472A1 (fr) 2021-04-20 2022-10-26 GFD Gesellschaft für Diamantprodukte mbH Élément de coupe avec des segments de coupe asymétriques
EP4079473A1 (fr) 2021-04-20 2022-10-26 GFD Gesellschaft für Diamantprodukte mbH Élément de coupe et dispositif d'épilation
WO2022223587A1 (fr) 2021-04-20 2022-10-27 Gfd Gesellschaft Für Diamantprodukte Mbh Élément de coupe à segments de coupe asymétriques
WO2022223588A1 (fr) 2021-04-20 2022-10-27 Gfd Gesellschaft Für Diamantprodukte Mbh Élément de coupe et dispositif d'épilation
WO2022223591A1 (fr) 2021-04-20 2022-10-27 Gfd Gesellschaft Für Diamantprodukte Mbh Élément de coupe et dispositif d'élimination des poils

Also Published As

Publication number Publication date
AU6394700A (en) 2001-02-19

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