EP2266763A1 - Klingenkassetten - Google Patents

Klingenkassetten Download PDF

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Publication number
EP2266763A1
EP2266763A1 EP09163384A EP09163384A EP2266763A1 EP 2266763 A1 EP2266763 A1 EP 2266763A1 EP 09163384 A EP09163384 A EP 09163384A EP 09163384 A EP09163384 A EP 09163384A EP 2266763 A1 EP2266763 A1 EP 2266763A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
side walls
length
blade assemblies
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.)
Withdrawn
Application number
EP09163384A
Other languages
English (en)
French (fr)
Inventor
Kevin Cowley
Oliver Oglesby
Mark Peterson
Christopher Stevens
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 EP09163384A priority Critical patent/EP2266763A1/de
Publication of EP2266763A1 publication Critical patent/EP2266763A1/de
Withdrawn legal-status Critical Current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
    • 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
    • B26B21/08—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 involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/22—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously
    • B26B21/222—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit
    • B26B21/225—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit the changeable unit being resiliently mounted on the handle
    • 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
    • B26B21/08—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 involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/22—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously

Definitions

  • the present invention relates to a wet shaving razor cartridge having a length optimized for effective and efficient shaving.
  • wet shaving razors have evolved over the years to include a multiplicity of blades, guards and caps with lubricant strips, all with the goal of increasing the closeness of a shave while also providing a comfortable shaving experience. Despite these many changes to the look of a wet shaving razor cartridge, the cartridge length has remained largely the same.
  • Razors currently on the market have lengths of approximately 40mm to 42mm.
  • the Fusion razor commercialized by The Gillette Company has a length of 41.36mm.
  • the Wilkinson Sword Quattro has a length of 40.69mm and the Azor by King of Shaves has a length of 40mm.
  • the present invention relates to a wet shaving cartridge
  • a wet shaving cartridge comprising a housing having a front wall, a rear wall and opposing side walls disposed transverse to and between said front and rear walls; one or more elongate blade assemblies extending between said opposing side walls, wherein the cartridge has a length of 30mm to 34mm wherein said cartridge length is defined as the distance between external faces of the side walls in a direction substantially parallel to the one or more elongate blade assemblies.
  • the invention is applicable to razor cartridges in general that are used in a wet shaving system.
  • Figure 1 shows a razor cartridge 10 formed of a housing 12 having a front wall 14, a rear wall 16 and first and second opposing side walls 18, 20 extending between the front will 14 and rear wall 16.
  • One or more blade assemblies 22 with sharp cutting edges 24 arc mounted within the housing 12 and extend between the first and second opposing side walls.
  • the housing has five blade assemblies. However, it will be understood that more or fewer blade assemblies may be mounted within the housing.
  • the blade assemblies are shown secured within the housing with clips 26, but other retention methods known to those skilled in the art may also be used.
  • the housing further has a guard 28 and cap 30 disposed respectively on the front wall 14 and rear wall 16.
  • An exterior of the housing 12 is defined by external faces 32. 34 of the side waits 18, 20.
  • a length, L, of the cartridge is defined as the distance between the external faces 32, 34 in a direction substantially parallel to the one or more blade assemblies 24. In embodiments of the present invention, this cartridge length is between 30mm or 31 mm and 33mm or 34mm. In a particular embodiment, the cartridge length is 32mm.
  • the length, L is defined as the furthest distance between the external faces 32, 34 of the side walls 18, 20, in a direction substantially parallel to the one or more blade assemblies 24.
  • Razor cartridges currently on the market have lengths of approximately 40mm to 42mm. Cartridge lengths of between 30mm and 34mm, as described herein, therefore equate to a reduction in existing cartridge lengths of 15% or 20% to 25% or 30%.
  • the present inventors have found that a reduction in cartridge lengths of the amount prescribed above results in an overall close and more efficient shave, compared with existing razor cartridges where all other dimensions and geometries are approximately the same. Without being limited by theory, it is believed that a close shave is achieved as the shorter cartridge length facilitates easier access of the razor cartridge to more confined and restricted areas such as concave sections of the neck and under the nose.
  • the reduction in length may not affect the closeness on larger flatter areas, such as cheeks; however, as fewer repeat strokes are required in more awkward areas, the overall result is a closer shave that requires fewer strokes. Thus, users will benefit from a closer shave that may last longer without having to invest more time in the process.
  • the wet shaving razor cartridges of the present invention may be mounted on a handle 40 with the intention that the entire razor should be discarded when the sharp edges 24 of the blade assemblies 22 have become dull.
  • the wet shaving cartridges of the present invention may be detachably mounted to a handle 40 so that the cartridge may be replaced on the handle 40 when the blade assemblies have lost the sharpness required for efficient shaving.
  • the blade assemblies 22 are usually carried by the housing 12, which is generally a molded plastic frame, and the blade assemblies 22 may then be supported to move within the frame, either independently of each other or in unison, under forces imparted on the blade assemblies by the skin during shaving.
  • the blade assemblies are mounted fixedly within slots in a blade retaining member.
  • the blade assemblies may be floatably mounted within the housing.
  • the plurality of blade assemblies is supported by one or more spring loaded blade retaining members where such blade assemblies are permitted to respond to the forces encountered during shaving.
  • Figure 3 shows a rear view of an embodiment of the razor cartridge 10 attached to a handle 40 as shown in Figure 2 .
  • the housing 12 comprises a guard 28 at a forward portion.
  • the guard contacts a shaver's skin immediately ahead of the plurality of blade assemblies 22.
  • the guard may be located within the housing 12 or it may extend over one or more of the front 14 or opposing side walls 18, 20 of the housing.
  • the guard 28 may comprise a plurality of elastomeric fins 42. Such fins may take the form of substantially parallel elongations that run a length of the guard. Alternatively, the fins may comprise a plurality of curved projections, e.g. circular tubes, semicircular projections, chevron shaped projections and combinations thereof.
  • the cap 70 is disposed after the plurality of blade assemblies within the housing adjacent the rear wall 16.
  • the cap 30 contacts the skin directly behind the plurality of blade assemblies 22 during a shaving stroke.
  • each may comprise additional elements that are also joined to or integral to the housing.
  • the cap 30 may comprise a lubricating strip 44.
  • Such a lubricating strip may comprise skin conditioning agents that improve the appearance and sensation encountered by the shaver upon completion of the shaving stroke.
  • the lubricating strip may comprise a shaving enhancement product, such as a lubricant which gradually leaches out of the strip material during shaving.
  • the positions of the fins and lubricating strip may be alternated so that the fins are on the cap and the lubricating strip is disposed on the guard.
  • the level of comfort obtained with any given wet shaving razor cartridge is influenced strongly by the shaving geometry, which is the relative positioning of the skin contacting components.
  • Important parameters of the shaving geometry include the blade exposure which is the distance by which the tip of the blade edge projects above, or is retracted below, a plane which is tangential to the skin contacting parts next in front and next behind the blade edge, the blade tangent angle (also known as the blade shaving angle) which is the angle at which the plane of the blade is inclined to a plane which is tangential to the guard and the cap surfaces (the tangent plane), and the blade span which is the distance by which the blade edge is spaced from the skin contacting element immediately in front of the blade edge, as seen in a plane which is tangential to the blade edge and the skin contacting element in front of it.
  • a progressive blade exposure may be used in the present invention as detailed in US Patent No. 6,212,777 .

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP09163384A 2009-06-22 2009-06-22 Klingenkassetten Withdrawn EP2266763A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09163384A EP2266763A1 (de) 2009-06-22 2009-06-22 Klingenkassetten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09163384A EP2266763A1 (de) 2009-06-22 2009-06-22 Klingenkassetten

Publications (1)

Publication Number Publication Date
EP2266763A1 true EP2266763A1 (de) 2010-12-29

Family

ID=41401715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09163384A Withdrawn EP2266763A1 (de) 2009-06-22 2009-06-22 Klingenkassetten

Country Status (1)

Country Link
EP (1) EP2266763A1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778535A (en) * 1997-03-28 1998-07-14 Ledesma; Jesus C. Multiwidth hand razor
US6161288A (en) * 1993-02-22 2000-12-19 Andrews; Edward A. Four blade bi-directional razor structure with flexible guard system
US6216345B1 (en) * 1999-07-27 2001-04-17 Edward A. Andrews Glide systems for manual shaving razors
FR2818508A1 (fr) * 2000-12-22 2002-06-28 Herve Lambert Ensemble de rasage
US6581290B1 (en) * 1998-09-08 2003-06-24 Rhonda Fishel Shaving system with variable sized razor cartridges
US20070283567A1 (en) * 2006-06-13 2007-12-13 Magli Anthony J Dual headed razor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6161288A (en) * 1993-02-22 2000-12-19 Andrews; Edward A. Four blade bi-directional razor structure with flexible guard system
US5778535A (en) * 1997-03-28 1998-07-14 Ledesma; Jesus C. Multiwidth hand razor
US6581290B1 (en) * 1998-09-08 2003-06-24 Rhonda Fishel Shaving system with variable sized razor cartridges
US6216345B1 (en) * 1999-07-27 2001-04-17 Edward A. Andrews Glide systems for manual shaving razors
FR2818508A1 (fr) * 2000-12-22 2002-06-28 Herve Lambert Ensemble de rasage
US20070283567A1 (en) * 2006-06-13 2007-12-13 Magli Anthony J Dual headed razor

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