EP0771254B1 - Safety razors - Google Patents
Safety razors Download PDFInfo
- Publication number
- EP0771254B1 EP0771254B1 EP95926229A EP95926229A EP0771254B1 EP 0771254 B1 EP0771254 B1 EP 0771254B1 EP 95926229 A EP95926229 A EP 95926229A EP 95926229 A EP95926229 A EP 95926229A EP 0771254 B1 EP0771254 B1 EP 0771254B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pockets
- blade unit
- unit according
- safety razor
- razor blade
- 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
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
- B26B21/08—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
-
- 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
- B26B21/44—Means integral with, or attached to, the razor for storing shaving-cream, styptic, or the like
Definitions
- This invention relates to shaving devices and concerns a safety razor blade unit having at least one blade with a cutting edge which is moved across the surface of the skin being shaved by means of a handle to which the blade unit is attached.
- the blade unit may be mounted detachably on the handle to enable the blade unit to be replaced by a fresh blade unit when blade sharpness has diminished to an unsatisfactory level, or it may be attached permanently to the handle with the intention that the entire razor be discarded when the blade or blades have become dulled.
- Razor blade units generally include a guard which defines a surface for contacting the skin in front of the blade(s) and a cap for contacting the skin behind the blade(s), the cap and guard serving important roles in establishing the so-called “shaving geometry", i.e. the parameters which determine the blade orientation and position relative to the skin during shaving.
- the present invention is especially concerned with the guard and/or cap of a razor blade unit.
- a shaving preparation to the skin, such as shaving soap or the like to facilitate the shaving operation.
- One effect of the shaving preparation is to lubricate the skin to enable the razor to slide more easily over the skin.
- the skin is not prepared as well as it might be.
- the razor at the end of shaving most of the preparation will have been removed. Therefore, it can be advantageous to provide the razor with a means for delivering a shaving enhancement composition or medium during shaving.
- a blade unit with a strip of material from which a lubricant is very gradually leached out during shaving.
- U.S. Patent No. 5,134,775 provides a shaver head for a wet razor having a plastic housing with a front guide strip and a rear cover cap.
- a storage chamber is disposed in the housing for receipt and retention of a liquid shaving aid.
- the storage chamber includes a laterally displaceable tubular cartridge containing the shaving aid.
- the cartridge has at least one bore for dispensing the shaving aid through an opening in the housing when the bore and opening are in alignment.
- a safety razor blade unit including at least one elongate blade, and a skin engaging member extending longitudinally of the blade(s), the member having a skin contacting surface exposed for contact with skin of a user during shaving, characterized in that the skin engaging member includes a multiplicity of pockets each of which has an opening at the skin contacting surface and is defined by side wall portions depending inward from the skin contacting surface, said pockets being adapted to hold respective portions of a non-rigid shaving enhancement product having adequate fluidity to pass into the pockets and adequate viscosity and surface tension characteristics to be held in the pockets without flowing freely out from pocket openings and to be dispensed gradually therefrom during shaving, and in that the pockets are distributed along the skin contacting surface and across the width thereof in a plurality of generally longitudinally extending rows forming an array spanning substantially the whole of the area of the skin contacting surface.
- a skin engaging member provided according to the invention may allow for the dispensing of materials which can not be included in prior art lubricating strips, e.g. because they cannot withstand the manufacturing process.
- the shaving enhancement product may be a formulation, such as semi-solid gel, which has been designed to have the desired solubilizing properties, and is conveniently retained in the pockets due to the properties of the product.
- the product may be a viscous fluid, or a gel, and may be of a nature to be miscible with water, which is generally present during shaving, or to dissolve in water, to render the product more fluid for discharge from the pockets.
- the pockets can communicate at the inner ends with a reservoir chamber containing the shaving enhancement product to be dispensed via the pockets.
- the pockets should be disposed in an array with sufficient density of packing to ensure satisfactory application of product during shaving.
- a width of surface between the adjacent pockets of 5% to 100% of the maximum transverse dimensions of the pockets should be adequate while retaining a sufficiently well defined skin contacting surface.
- the pockets are cylindrical, i.e. have smoothly curved side walls, and conveniently the pockets are right circular cylindrical with their axes substantially perpendicular to the skin contacting surface.
- other shapes are also possible, such as hexagonal or elliptical in cross section.
- the depth of the pockets is less than the pocket diameter, e.g. approximately equal to the pocket radius, and the thickness of material between adjacent pockets is less than the pocket radius.
- the pockets are preferably formed in a front wall of a chamber for holding a supply of a fluid shaving enhancement product, each of the pockets communicating with the chamber through a restricted opening to control flow of product into the pockets and hence release at the skin contacting surface.
- the skin engaging member can be the guard of the blade unit or it can be another member, such as the cap.
- the safety razor blade unit shown in the drawings comprises a pair of blades 1, 2 mounted in tandem in a supporting frame, a guard 3 fastened to the frame and defining a hollow reservoir chamber 4, and cap 5 e.g. in the form of a strip of lubricating material carried by the frame behind the blades.
- the guard includes an upper wall 8 with an exposed surface 9 which is arranged to contact the skin during shaving. Within this wall is formed a multiplicity of pockets 10 positioned in a regular array extending over the length and width of the skin contacting surface.
- the pockets are disposed in a plurality of longitudinal rows, and in the shown example there are three rows with the pockets in adjacent rows longitudinally off set to permit the pockets to be closely spaced.
- the pockets are of circular configuration and in the illustrated embodiment all have the same diameter.
- Each pocket 10 is in communication with the reservoir chamber 4 through a hole 12 shown to be of restricted area at the inner end of the pocket.
- the through flow area of the hole is selected to allow shaving enhancement product contained in the chamber 4 to flow at a controlled rate into the pockets where the product collects and remains held e.g. under the surface tension properties of the fluid product, ready to be discharged during shaving.
- the restricted hole also serves to obstruct the passage of the shaving aid product from the pocket back into the reservoir chamber, so that the pockets remain charged with product.
- the reservoir chamber will contain sufficient volume of shaving aid product to last the full useful lifetime of the blade unit, that is until the blades have become dulled.
- the shaving aid product preferably has lubricating property, but it may have, either alternatively or in addition, other, e.g. moisturizing properties considered beneficial during shaving. It will have adequate fluidity to enable the product to pass from the reservoir chamber into the pockets, and adequate viscosity and surface tension characteristics to be held in the pockets without flowing freely out from the pocket openings, and to be dispensed gradually during shaving, e.g. upon being made more fluid by contact with water, when the guard surface slides over the skin during shaving.
- the pockets should be supplied with shaving enhancement product and it is within the ambit of the present invention for the pockets to be shaped and dimensioned to collect a shaving enhancement product applied to the skin during one time of shaving and to retain that product until the next time of shaving, e.g. to provide improved lubrication during the initial stages of the subsequent shave.
- the member incorporating the pockets filled with shaving aid product could be made of a resilient material so that the member will flex slightly during shaving to encourage product to flow from the pockets.
- the apertured member with the pockets may have a beneficial tactile influence upon the skin.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
- Cosmetics (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Laser Surgery Devices (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Glass Compositions (AREA)
- Paper (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
Abstract
Description
Claims (23)
- A safety razor blade unit including at least one elongate blade (1,2), and a skin engaging member extending longitudinally of the blade(s), said member having a skin contacting surface exposed for contact with skin of a user during shaving, characterized in that the skin engaging member includes a multiplicity of pockets (10) each of which has an opening at the skin contacting surface is defined by side wall portions depending inward from the skin contacting surface, said pockets (10) being adapted to hold respective portions of a non-rigid shaving enhancement product having adequate fluidity to pass into the pockets (10) and adequate viscosity and surface tension characteristics to be held in the pockets (10) without flowing freely out from pocket openings and to be dispensed gradually therefrom during shaving, and in that said pockets are distributed along the skin contacting surface and across the width thereof in a plurality of generally longitudinally extending rows forming an array spanning substantially the whole of the area of the skin contacting surface.
- A safety razor blade unit according to claim 1, characterized in that pockets (10) of adjacent rows are longitudinally offset.
- A safety razor blade unit according to claim 1, characterized in that each pocket (10) communicates with a reservoir chamber (4) containing said shaving enhancement product to be dispersed via the pockets (10).
- A safety razor blade unit according to claim 3, characterized in that at least some of the pockets (10) have inner end portions defining flow metering apertures (12) that communicate with said reservoir chamber (4).
- A safety razor blade unit according to claim 4, characterized in that the pockets (10) are positioned in a plurality of longitudinal rows.
- A safety razor blade unit according to claim 3, characterized in that the pockets are formed in a wall member (8) partially confining the reservoir chamber (4).
- A safety razor blade unit according to claim 1, characterized in that the pockets (10) have smoothly curved side walls.
- A safety razor blade unit according to claim 7, characterized in that the pockets (10) are cylindrical with the axes thereof substantially perpendicular to the skin contacting surface.
- A safety razor blade unit according to claim 8, characterized in that the pockets (10) are right circular cylindrical.
- A safety razor blade unit according to claim 8, characterized in that the pockets (10) have a depth not greater than the pocket diameter.
- A safety razor blade unit according to any of claims 1 to 4, characterized in that neighboring rows are offset relative to one another in the longitudinal direction by an amount less than a maximum transverse dimension of the pockets, whereby an overlap, as viewed projected in a direction transverse to the longitudinal extent of the rows, results between neighboring pockets (10) of adjacent rows.
- A safety razor blade unit according to any one of claims 1 to 3, characterized in that the pockets (10) have depth at least 50% of the maximum transverse dimension of the pockets (10).
- A safety razor blade unit according to claim 12, characterized in that the pockets (10) have depth not greater than the maximum transverse dimension of the pockets (10).
- A safety razor blade unit according to any of claims 1 to 3, characterized in that the skin engaging member comprises a resilient material to flex during shaving and exert traction force on the skin surface being shaved.
- A safety razor blade unit according to any of claims 1 to 3, characterized in that a thickness of surface between adjacent pockets (10) is less than 50% of the maximum transverse dimension of the pockets (10).
- A safety razor blade unit according to any of claims 1 to 3, characterized in that there are at least three longitudinally extending rows of pockets (10).
- A safety razor blade unit according to any of claims 1 to 3, characterized in that the skin engaging member occupies a position of a guard surface (3) in advance of the at least one blade (1, 2).
- A safety razor blade unit according to claim 17, characterized in that a further skin engaging member occupies a position of a cap surface (5) behind the at least one blade (1, 2).
- A safety razor blade unit according to any of claims 1 to 3, characterized in that the skin engaging member occupies a position of a cap surface (5) behind the at least one blade (1, 2).
- A safety razor blade unit according to any of claims 1 to 3, characterized in that the at least one elongate blade (1, 2) comprises a linear edged blade member.
- A safety razor blade unit according to claim 1 or claim 2, characterized in that the pockets (10) are further defined by floor portions formed traverse to the depending side wall portions.
- A safety razor blade unit according to claim 21, further characterized in that a reservoir chamber (4) is arranged to receive said non-rigid shaving enhancement product, and in that the pocket floor portions define flow restricting apertures (12) in communication with the reservoir (4) to permit a flow of the product from the reservoir (4) to the skin contacting surface and constrict a backflow into the reservoir (4) so the pockets (10) remain charged with product.
- A safety razor blade unit according to claim 1, characterized in that adjacent pockets (10) of the array of pockets are spaced at a distance of 5% to 100% of the maximum transverse dimension of the pockets.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK03000418T DK1306173T3 (en) | 1994-07-13 | 1995-07-11 | A safety razor |
EP03000418A EP1306173B1 (en) | 1994-07-13 | 1995-07-11 | Safety razors |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9414092 | 1994-07-13 | ||
GB9414092A GB9414092D0 (en) | 1994-07-13 | 1994-07-13 | Safety razors |
PCT/US1995/008634 WO1996002369A1 (en) | 1994-07-13 | 1995-07-11 | Safety razors |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03000418A Division EP1306173B1 (en) | 1994-07-13 | 1995-07-11 | Safety razors |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0771254A1 EP0771254A1 (en) | 1997-05-07 |
EP0771254A4 EP0771254A4 (en) | 1998-09-30 |
EP0771254B1 true EP0771254B1 (en) | 2003-04-09 |
Family
ID=10758238
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95926229A Expired - Lifetime EP0771254B1 (en) | 1994-07-13 | 1995-07-11 | Safety razors |
EP03000418A Expired - Lifetime EP1306173B1 (en) | 1994-07-13 | 1995-07-11 | Safety razors |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03000418A Expired - Lifetime EP1306173B1 (en) | 1994-07-13 | 1995-07-11 | Safety razors |
Country Status (18)
Country | Link |
---|---|
EP (2) | EP0771254B1 (en) |
JP (1) | JPH10502845A (en) |
KR (1) | KR100392288B1 (en) |
CN (1) | CN1157280C (en) |
AT (2) | ATE337141T1 (en) |
AU (1) | AU699297B2 (en) |
BR (1) | BR9508270A (en) |
CA (1) | CA2194278C (en) |
CZ (1) | CZ298341B6 (en) |
DE (2) | DE69535198T2 (en) |
DK (2) | DK0771254T3 (en) |
ES (2) | ES2266644T3 (en) |
GB (1) | GB9414092D0 (en) |
HU (1) | HU220174B (en) |
MX (1) | MX9700299A (en) |
NZ (1) | NZ290041A (en) |
PT (2) | PT771254E (en) |
WO (1) | WO1996002369A1 (en) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6185823B1 (en) | 1995-11-10 | 2001-02-13 | The Gillette Company | Oval frame razor |
GB9600620D0 (en) * | 1996-01-12 | 1996-03-13 | Gillette Co | Safety razors |
US6161287A (en) * | 1998-04-24 | 2000-12-19 | The Gillette Company | Razor blade system |
US6131287A (en) | 1998-06-08 | 2000-10-17 | American Safety Razor Company | Razor cartridge with dimpled blade guard |
US6754958B2 (en) | 1998-08-19 | 2004-06-29 | The Gillette Company | Applying fluid preparations to the skin, e.g. in connection with shaving |
GB9818115D0 (en) | 1998-08-19 | 1998-10-14 | Gillette Co | Applying fluid preparation to the skin e g in connection with shaving |
AUPP723198A0 (en) * | 1998-11-23 | 1998-12-17 | Wride, Donald Charles Mr | Improved razor |
US7178241B1 (en) | 2000-05-22 | 2007-02-20 | Eveready Battery Company, Inc. | Lubricating shaving assembly |
US7266895B2 (en) | 2002-04-24 | 2007-09-11 | Eveready Battery Company, Inc. | Razor assembly |
US6964097B2 (en) * | 2003-12-04 | 2005-11-15 | Eveready Battery Company, Inc. | Shaving apparatus |
US20050188539A1 (en) * | 2004-02-26 | 2005-09-01 | Prudden John Jr. | Shaving blade unit |
GB2412856A (en) | 2004-04-08 | 2005-10-12 | Reckitt Benckiser | Depilatory scraper and method having head with undersurface and fin(s) projecting there from. |
GB2412862A (en) * | 2004-04-08 | 2005-10-12 | Reckitt Benckiser | Depilatory tool with removable head |
ES2308478T3 (en) | 2004-04-08 | 2008-12-01 | Reckitt Benckiser (Uk) Limited | DEVICE AND METHOD. |
GB2412861A (en) * | 2004-04-08 | 2005-10-12 | Reckitt Benckiser | Depilatory scraper including a source of non-depilatory material |
US20060237021A1 (en) * | 2005-04-21 | 2006-10-26 | Guay Gordon G | Methods and devices for rejuvenating skin |
US7581318B2 (en) * | 2006-08-03 | 2009-09-01 | Eveready Battery Company, Inc. | Skin engaging device for a safety razor |
US20090071006A1 (en) * | 2007-09-14 | 2009-03-19 | The Gillette Company | Safety razor with enhanced shaving aid member |
AU2010306725B2 (en) * | 2009-10-16 | 2016-09-15 | Edgewell Personal Care Brands, Llc | Lubrication box for a wet shaving implement |
AU2010306728B2 (en) * | 2009-10-16 | 2016-11-03 | Edgewell Personal Care Brands, Llc | Lubrication box for a wet shaving implement |
AU2010306724B2 (en) * | 2009-10-16 | 2016-08-11 | Edgewell Personal Care Brands, Llc | Lubrication box for a wet shaving implement |
PL2490868T3 (en) * | 2009-10-20 | 2017-12-29 | Edgewell Personal Care Brands, Llc | Lubrication box for a wet shaving implement |
US9446573B2 (en) * | 2009-10-21 | 2016-09-20 | Edgewell Personal Care Brands, Llc | Lubrication box for a wet shaving implement |
US20110203113A1 (en) * | 2010-02-25 | 2011-08-25 | Xiandong Wang | Razor Cartridge With Improved Cap Structure |
GB2491406A (en) * | 2011-06-03 | 2012-12-05 | Gwilym Boore | Shaving Aid and Method of Replenishment Thereof |
EP2537649B1 (en) * | 2011-06-21 | 2013-07-17 | The Gillette Company | Razor cartridge with skin contact element |
KR20130041555A (en) * | 2011-10-17 | 2013-04-25 | 주식회사 도루코 | Razor cartridge |
US9390631B2 (en) * | 2013-10-08 | 2016-07-12 | The Gillette Company | Shaving razor demonstration method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8911246U1 (en) * | 1989-09-21 | 1991-01-24 | Wilkinson Sword GmbH, 5650 Solingen | Shaver head, especially razor blade unit |
US5056222A (en) * | 1990-09-28 | 1991-10-15 | The Gillette Company | Shaving system |
US5092042A (en) * | 1990-09-28 | 1992-03-03 | The Gillette Company | Shaving system |
JP3606869B2 (en) * | 1992-11-09 | 2005-01-05 | ワーナー−ランバート・カンパニー | Shaving equipment |
-
1994
- 1994-07-13 GB GB9414092A patent/GB9414092D0/en active Pending
-
1995
- 1995-07-11 KR KR1019970700114A patent/KR100392288B1/en not_active IP Right Cessation
- 1995-07-11 WO PCT/US1995/008634 patent/WO1996002369A1/en active IP Right Grant
- 1995-07-11 AT AT03000418T patent/ATE337141T1/en not_active IP Right Cessation
- 1995-07-11 CN CNB951941259A patent/CN1157280C/en not_active Ceased
- 1995-07-11 ES ES03000418T patent/ES2266644T3/en not_active Expired - Lifetime
- 1995-07-11 DE DE69535198T patent/DE69535198T2/en not_active Expired - Lifetime
- 1995-07-11 PT PT95926229T patent/PT771254E/en unknown
- 1995-07-11 ES ES95926229T patent/ES2191054T3/en not_active Expired - Lifetime
- 1995-07-11 DK DK95926229T patent/DK0771254T3/en active
- 1995-07-11 EP EP95926229A patent/EP0771254B1/en not_active Expired - Lifetime
- 1995-07-11 DK DK03000418T patent/DK1306173T3/en active
- 1995-07-11 CA CA002194278A patent/CA2194278C/en not_active Expired - Lifetime
- 1995-07-11 JP JP8505088A patent/JPH10502845A/en active Pending
- 1995-07-11 DE DE69530297T patent/DE69530297T2/en not_active Expired - Lifetime
- 1995-07-11 AU AU30058/95A patent/AU699297B2/en not_active Ceased
- 1995-07-11 EP EP03000418A patent/EP1306173B1/en not_active Expired - Lifetime
- 1995-07-11 CZ CZ0001997A patent/CZ298341B6/en not_active IP Right Cessation
- 1995-07-11 BR BR9508270A patent/BR9508270A/en not_active IP Right Cessation
- 1995-07-11 PT PT03000418T patent/PT1306173E/en unknown
- 1995-07-11 NZ NZ290041A patent/NZ290041A/en not_active IP Right Cessation
- 1995-07-11 AT AT95926229T patent/ATE236766T1/en not_active IP Right Cessation
- 1995-07-11 MX MX9700299A patent/MX9700299A/en unknown
- 1995-07-11 HU HU9700061A patent/HU220174B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE69535198T2 (en) | 2007-08-23 |
EP1306173A1 (en) | 2003-05-02 |
JPH10502845A (en) | 1998-03-17 |
KR970704555A (en) | 1997-09-06 |
PT771254E (en) | 2003-08-29 |
CN1157280C (en) | 2004-07-14 |
DK0771254T3 (en) | 2003-04-28 |
HUT77209A (en) | 1998-03-02 |
BR9508270A (en) | 1997-11-11 |
PT1306173E (en) | 2007-01-31 |
DK1306173T3 (en) | 2006-10-09 |
DE69530297T2 (en) | 2004-02-05 |
AU3005895A (en) | 1996-02-16 |
EP0771254A1 (en) | 1997-05-07 |
CA2194278A1 (en) | 1996-02-01 |
MX9700299A (en) | 1997-05-31 |
ATE337141T1 (en) | 2006-09-15 |
WO1996002369A1 (en) | 1996-02-01 |
DE69530297D1 (en) | 2003-05-15 |
AU699297B2 (en) | 1998-11-26 |
ATE236766T1 (en) | 2003-04-15 |
EP1306173B1 (en) | 2006-08-23 |
EP0771254A4 (en) | 1998-09-30 |
NZ290041A (en) | 1998-11-25 |
CN1152889A (en) | 1997-06-25 |
ES2191054T3 (en) | 2003-09-01 |
CA2194278C (en) | 2000-02-29 |
KR100392288B1 (en) | 2003-11-01 |
GB9414092D0 (en) | 1994-08-31 |
DE69535198D1 (en) | 2006-10-05 |
HU220174B (en) | 2001-11-28 |
CZ298341B6 (en) | 2007-08-29 |
CZ1997A3 (en) | 1997-08-13 |
ES2266644T3 (en) | 2007-03-01 |
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