WO2011141900A1 - Rasoir - Google Patents

Rasoir Download PDF

Info

Publication number
WO2011141900A1
WO2011141900A1 PCT/IE2011/000023 IE2011000023W WO2011141900A1 WO 2011141900 A1 WO2011141900 A1 WO 2011141900A1 IE 2011000023 W IE2011000023 W IE 2011000023W WO 2011141900 A1 WO2011141900 A1 WO 2011141900A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
mounting
razor
retainer
straight razor
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/IE2011/000023
Other languages
English (en)
Inventor
Gregory Dunne
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 WO2011141900A1 publication Critical patent/WO2011141900A1/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
    • 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
    • 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
    • B26B21/10—Safety razors with one or more blades arranged longitudinally to the handle

Definitions

  • the present invention relates to razors, especially those of the straight- razor type, often colloquially referred to as a "cut-throat" razor.
  • the straight razor Prior to the invention of the safety razor, the straight razor was in popular use for shaving and the cutting of hair.
  • the main disadvantage of the safety razor was the skill it required to wield: both in safely cutting hair/bristle and in sharpening the razor between uses using a strop.
  • the straight razor does have some advantages over the modern safety razor, including multi-blade cartridge type razors.
  • a straight razor comprising a handle, a blade mounting, and a blade retainer, the blade retainer and blade mounting being selectable from a first position which allows a blade to be mounted on the razor and a second position wherein the blade is retained by the razor.
  • the blade mounting includes a blade guide.
  • the blade retainer may include a blade guide.
  • the blade guide includes a tapered leading edge, such that when a blade is mounted on the straight razor, the tapered leading edge extends beyond the sharpened edge of the blade.
  • the tapered edge thus presents the portion of skin to be shaved at a constant angle to the sharpened edge whilst the user holds the tapered edge wholly and substantially in contact with said skin.
  • the tapered leading edge is arranged such that skin to be shaved is presented at an angle to the sharpened edge of the blade, more preferably an angle of substantially 30 degrees.
  • the blade retainer is rotatably mounted on the blade mounting. More preferably the blade retainer is rotatably mounted around the blade mounting, whereby in said second position the blade mounting is located substantially within a channel located in the blade retainer.
  • the blade mounting and handle are rotatably mounted on one another, more preferably at the substantially towards a distal end of each.
  • the blade mounting and blade retainer are arranged such that they cooperate to deform a substantially flat blade to be mounted into a generally U-shaped formation when blade mounting and blade retainer are in the second position.
  • the blade mounting and blade retainer include interference locking means, more preferably by means of corresponding lips located on each.
  • the blade mounting includes mounting protrusions and mounting tabs that cooperate to hold a blade to be mounted in place whilst the blade mounting and blade retainer are in the first position. They also preferably prevent the blade from being forced off the blade mounting whilst the blade mounting and blade retainer are being moved to the second position.
  • Figure 1 is an isometric view of a razor according to the present invention
  • Figures 2 to 5 are similar isometric views of the razor of figure 1 showing successive stages in the mounting of a razor blade;
  • Figures 6 & 7 are side detail views of the razor of figure 1 ;
  • Figure 8 is an elevation detail view of the razor of figure 1 ;
  • Figure 9 is a side view of the razor of figure 1 in a fully closed position.
  • Figure 1 shows a razor 10 comprising a handle portion 12, a blade mounting 14, a blade guide 16, a cover 18, and a blade retainer 20.
  • Figure 1 shows a standard safety razor blade 22 about to be mounted in position on the blade mounting 14.
  • the razor blade 22 is a well known type and available from many manufactures. It includes a central mounting slot 24 and, in this particular case, includes two sharpened edges 26 & 28. At either side of the smaller dimension of the central mounting slot 24, are two webbing portions 24a.
  • the blade mounting 14 and blade guide 16 are located on the distal end of an elongate member 30 and the elongate member 30 is rotatably mounted to the handle portion 12 via a pivot point 32.
  • the pivot point can be of formed by any suitable mechanism, but in this case is a pin and hole arrangement i.e. the handle portion form a channel for receiving the elongate member 30 with two lugs extending in parallel from a base of the channel. The lugs each have a small bore through them.
  • the elongate member 30 is received within the channel and has a corresponding bore. A pin is inserted through the lug bores and elongate member bore allowing the handle portion 12 and elongate member 30 to pivot with respect to one another.
  • Pivoting of the handle portion 12 and elongate member 30 is limited at two relative degrees, the limits being reached when the elongate member 30 is fully enclosed within the handle portion 12 at one limit and by the provision of an elongate member protrusion 34.
  • the elongate member protrusion 34 is shaped to be thumb operated and comfortable for such use. The user, holding the handle portion 12 within the palm of their hand, can exert a force to the elongate member protrusion 34 with their thumb thereby forcing the elongate member 30 to pivot and deploy the blade into a shaving position.
  • the blade mounting 14 includes mounting protrusions 14a, which extend from the surface of the blade mounting 14 (itself the distal portion of the elongate member 30), the opposite surface of which extends the blade guide 16. Also extending from the blade mounting are mounting tabs 14b.
  • the blade guide 16 is of a prismatic shape, and at its distal portion forms a leading edge 16a.
  • the leading edge 16a is formed from two tapering edges 16b.
  • the blade retainer 20 is of a generally U-shaped configuration, and also rotatably mounted to the elongate member 30. In this particular embodiment, a similar pin and bore configuration is used for the mounting.
  • the blade retainer 20 is shaped and dimensioned such that its central channel is of sufficient dimensions to allow the portion of the elongate member 30 that incorporates the blade mounting 14 and blade guide 16 to be contained within it.
  • FIGS 2 to 5 show the sequence by which a razor blade 22 is mounted into the razor 10 to allow it to be used for shaving.
  • FIG 2 shows the razor blade 22 about to be mounted on the blade mounting 14.
  • the blade 22 is inserted such that the mounting protrusions 14a extend through the mounting slot 24, and the webbing portions 24a are trapped between the elongate member 30 and the mounting tabs 14b.
  • the blade 22 is still flat i.e. contained within one plane and the sharpened edges 26 & 28 extend perpendicularly from the general plane of the blade guide 16.
  • the blade retainer 20 is pivoted downwards towards the blade 22.
  • the blade 22 contains two lines of weakness (not shown) parallel to the sharpened edges 26 & 28, and each located on the blade 22 between a corresponding sharpened edge 26,28 and the mounting slot 24.
  • the blade retainer 20 contacts the blade 22, at about the position of the lines of weakness on the blade 22.
  • the user will encounter some resistance, but this may be overcome and, by doing so, the lines of weakness will cause the blade 22 to be deformed into a largely U-shaped configuration, with the sharpened edges 26 & 28 being deployed now parallel to the general plane of the blade guide 16.
  • Figure 4 shows the configuration of the razor 10 in a usable state, i.e. with the blade 22 deployed for shaving.
  • the blade retainer 20 is dimensioned such that the blade 22 is effectively sandwiched between the blade retainer 20 and the elongate member 30.
  • a suitably tight fit between these three elements is used in the present embodiment to maintain the blade 22 safely within this position by a combination of friction and the natural resilience of the three elements.
  • figure 5 is a view showing the blade retainer 20 rotated away from the blade 22, showing the deformation of the blade 22 and the U-shaped configuration. The user would, of course, carry out this operation upon periodic replacement of the blade 22.
  • FIGS 6, 7 and 8 show some further details of the blade 22 in position.
  • Figure 6 shows an additional locking means to safely hold the blade 22 in position.
  • the blade retainer 20 has a protruding lip 20a.
  • the elongate member 30 also has a corresponding protruding lip 30a. These cause interference fit to be formed when snapped into position.
  • the blade 22 is held in position sandwiched between blade retainer 20 and elongate member 30 by a combination of friction of the three elements, the three elements natural resistance and the interference fit of the two protruding lips 20a, 30a.
  • Figure 7 shows some further detail of the blade 22 deformed and mounted on the blade mounting 14, with the mounting protrusions 14a extending through the mounting slot 24.
  • Figure 8 is a detailed end view of the razor 10 and the blade 22 in its deployed position. As can be seen, the sharpened edges 26 & 28 are positioned either side of the blade guide 16. Where the sharpened edges 26 & 28 terminate, the two tapering edges 16b of the leading edge 16a of the blade guide 16 continues a distance further away from the elongate member 30.
  • the plane (not shown) of the sharpened edges 26 & 28 are generally parallel to a general plane 10a of the razor 10.
  • the plane 16c of the tapering edges 16b is at an angle to the razor plane 10a, in this case 30 degrees.
  • the user presents the skin to be shaved to the tapering edge 16b, generally parallel to one another.
  • the corresponding sharpened edge 26,28 is presented at an angle of 30 degrees to the skin, known to be an optimal angle for shaving.
  • the razor 10 is provided with a flat portion 10b on the handle 18. This flat portion 10b allows the razor 10 to be placed on, for example, a bathroom shelf and remain in the position shown in figure 9.
  • the blade mount may be a U-shaped channel on an elongate member
  • the blade retainer may be a simple insert that the user forces into this channel with a blade being placed between the channel and the blade retainer.
  • the blade retainer in this arrangement may include the guide means and tapered edge. Further the blade retainer in this arrangement may not be attached to the razor, merely being held in place by friction, or a similar lip-locking design as described above.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)

Abstract

La présente invention se rapporte à des rasoirs, en particulier à ceux du type rasoir droit, souvent appelé familièrement rasoir « coupe-gorge ». La présente invention se rapporte à un rasoir droit qui peut être utilisé avec des lames de sécurité connues et comprend généralement un manche, une monture de lame et un système de retenue de lame, le système de retenue de lame et la monture de lame pouvant être sélectionnés entre une première position qui permet à une lame d'être montée sur le rasoir, et une seconde position dans laquelle la lame est retenue par le rasoir.
PCT/IE2011/000023 2010-05-13 2011-04-12 Rasoir Ceased WO2011141900A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IE2010/0308 2010-05-13
IE20100307 2010-05-13
IE20100308 2010-05-13
IE2010/0307 2010-05-13

Publications (1)

Publication Number Publication Date
WO2011141900A1 true WO2011141900A1 (fr) 2011-11-17

Family

ID=44201046

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IE2011/000023 Ceased WO2011141900A1 (fr) 2010-05-13 2011-04-12 Rasoir

Country Status (1)

Country Link
WO (1) WO2011141900A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD977717S1 (en) * 2022-02-22 2023-02-07 Mark Schwartz Single-bladed cartridge for a straight razor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365149A (en) * 1930-10-09 1932-01-11 Stephen Arnold Marples Improvements in razors
US3388467A (en) * 1965-06-24 1968-06-18 Tuckmantel & Martin Open razor-type shaving implement
EP1356900A1 (fr) * 2002-04-22 2003-10-29 Haruyuki Kitano Rasoir

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365149A (en) * 1930-10-09 1932-01-11 Stephen Arnold Marples Improvements in razors
US3388467A (en) * 1965-06-24 1968-06-18 Tuckmantel & Martin Open razor-type shaving implement
EP1356900A1 (fr) * 2002-04-22 2003-10-29 Haruyuki Kitano Rasoir

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD977717S1 (en) * 2022-02-22 2023-02-07 Mark Schwartz Single-bladed cartridge for a straight razor

Similar Documents

Publication Publication Date Title
CN103201076B (zh) 枢转剃刀
US20210069921A1 (en) Spacer for razor
US9032627B2 (en) Shaving blade unit and shaver having such a blade unit
CN104284757B (zh) 具有可旋转部分的剃刀柄部
EP3191267B1 (fr) Rasoir de sécurité modulaire à angle de lame réglable
EP1907174B1 (fr) Accessoire de rasage presentant un pivot en avant de l'embout
CN100500390C (zh) 具有两个剃须刀头的铰接式剃须刀
EP2176041B1 (fr) Accessoire de rasage multi-usage
US8359751B2 (en) Shaving blade unit comprising a movable trimming blade protector and shaver having such a blade unit
US20150283716A1 (en) Rotating type razor
EP1901887B1 (fr) Élément d'aide au rasage d'un rasoir de sûreté
ES2927451T3 (es) Afeitadora recortadora
KR20140002069U (ko) 면도기
WO2011141900A1 (fr) Rasoir
WO2022250566A1 (fr) Nécessaire de rasage
US20260054401A1 (en) Electric beard trimmer
EP4731397A1 (fr) Rasoir
AU2012223119A1 (en) Integrated Wet Shaving and Trimming Implement
HK1243974A1 (zh) 身体刮刀及其使用方法
GB2409425A (en) Razor head
MXPA06010273A (en) Shaving razors and other hair cutting assemblies

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11718166

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11718166

Country of ref document: EP

Kind code of ref document: A1