EP2183078A1 - Sharpener for sharpening blades, especially razor blades - Google Patents
Sharpener for sharpening blades, especially razor bladesInfo
- Publication number
- EP2183078A1 EP2183078A1 EP08785351A EP08785351A EP2183078A1 EP 2183078 A1 EP2183078 A1 EP 2183078A1 EP 08785351 A EP08785351 A EP 08785351A EP 08785351 A EP08785351 A EP 08785351A EP 2183078 A1 EP2183078 A1 EP 2183078A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sharpening
- sharpener according
- sharpener
- blades
- rounding
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
- B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges
- B24D15/10—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of safety-razor blades
Definitions
- the invention relates to a sharpener for sharpening blades, in particular razor blades, with a holder, on which a sharpening element is received.
- the invention is therefore an object of the invention to provide a sharpener for sharpening blades, especially razor blades, which is simple in construction, and to enable effective sharpening particular razor blades in multi-blade heads.
- a shaver for sharpening blades in particular razor blades, with a holder to which a sharpening element is added, which has an outwardly projecting curve with a radius between 0.1 and 2 mm.
- a sharpening element is used which is specially adapted to the shape of multi-blade razors. Since the sharpening element has a radius of between 0.1 and 2 mm radius, it can be individually guided along each razor blade of a multi-blade razor to sharpen it. It is sufficient to drive with the tip of the sharpening element at least once on each razor blade, preferably several times.
- the sharpening element has a rounding with a radius of at least 0.2 mm, more preferably a rounding with a radius of at most 1 mm, preferably of at most 0.7 mm.
- the rounding is formed at the end of a rotationally symmetrical section. This may be approximately cylindrical, conical or barrel-shaped.
- the rounding is formed at the end of a broad tip with mutually running side surfaces.
- the rounding can be either rounded on all sides in the form of a cylindrical, conical or barrel-shaped section, or at the end of an edge, which is formed approximately by the edge of a small plate or by a broad tip, which results from two mutually running side surfaces ,
- the sharpening element can be formed according to a further embodiment of the invention at the end of a rod.
- the rod can also take over the holder function for the sharpening element.
- the rod may, for example, have a cylindrical, rectangular or polyhedral cross-section.
- the sharpening element is exchangeably received on the holder.
- a holder for different sharpening elements can be used or a sharpening element can be replaced after damage or wear if necessary.
- the sharpening element has an axial length of at most 20 mm, preferably of at most 15 mm, more preferably of at most 10 mm, particularly preferably of at most 8 mm.
- the axial length of the sharpening element is preferably at least 1 mm, more preferably at least 3 mm, more preferably at least 5 mm.
- the sharpening element tapers at an angle of 5 ° to 50 °, preferably from 10 ° to 35 °, more preferably from 15 ° to 30 ° to the rounding out.
- This measure supports a precise sharpening process.
- a protective cap can be provided which is removably received on the sharpening element.
- the sharpening element is preferably made of ceramic, such as an alumina-based ceramic, but may in principle also be made of stone or metal with an abrasive coating e.g. made of diamond, boron carbide or titanium carbide.
- the object of the invention is achieved by a sharpener for sharpening blades, in particular razor blades, with a holder, on which an edged sharpening element is received, which has at least one side surface for sharpening.
- a plurality of sharpening elements for sharpening razor blades are arranged side by side.
- the sharpening elements are preferably formed tapering outwardly.
- the razor blades of multi-bladed heads can be sharpened simultaneously in one operation.
- Figure 1 is a perspective view of a sharpener according to the invention in connection with a razor having a two-blade head.
- FIG. 2 shows a partial view of a further embodiment of a sharpener according to the invention
- FIG. 3 shows a partial view of a further embodiment of a sharpener according to the invention
- 4 shows a partial view of a further embodiment of a sharpener according to the invention
- Figure 5 is a perspective view of a protective cap which can be placed on the end of a sharpener to protect the sharpening element.
- Fig. 6 is a partial perspective view of another embodiment of a sharpener according to the invention.
- Fig. 7 is a partial perspective view of another embodiment of a sharpener according to the invention.
- a first embodiment of a sharpener according to the invention is shown together with a razor in an application position.
- the sharpener generally designated 10, has a cylindrical holder 12 in which a ceramic rod 14 is exchangeably received.
- the ceramic rod 14 is made of alumina ceramic and is in a cylindrical recess (not shown) of the holder 12 plugged.
- the cylindrical ceramic rod 14 has at its outer end to an integrally formed sharpening element 16 which tapers from the cylindrical ceramic rod 14 to a rounding 18 out.
- the rounding 18 has, for example, a rounding radius of 0.5 mm, while the cone is formed with a point angle of, for example, 40 °.
- a conventional wet shaver 20 is shown with a handle portion 21, at the outer end of a razor head 22 is replaceably mounted.
- the razor head 22 has two blades 24, 26, which are held in a known manner with a certain distance from each other running parallel in the razor head 22.
- the sharpener 10 according to the invention is now held with one hand on the holder 12, while the other hand holds the razor 20 at its handle 21.
- the sharpener 10 is now pulled in the direction of the arrow 28 from one end of a respective blade 24 and 26 to the other end to pull off the blade and sharpen it.
- a protective cap 30 is shown, which can be placed on the outer end of the ceramic rod 14 to protect the rounding 18 against damage from the outside during transport.
- Both the holder 12 and the protective cap 30 are preferably made of plastic.
- a cylindrical ceramic rod 14a is shown, on the outer end face of a integrally connected thereto sharpening element 16a is formed.
- the sharpening element 16a is tapered toward its rounding 18a.
- the total length L of the sharpening element 16a is here, for example, about 10 mm, but can basically move in a range between 1 and 20 mm.
- the rounding 18a has a radius R, which in principle can be between 0.1 and 2 mm and, for example, is 0.5 mm in the illustrated case.
- the sharpening element 16 a has a cone tip angle ⁇ , which may for example be between 5 and 50 °, in the case shown here is about 20 °.
- a further embodiment of a sharpener according to the invention is generally designated 10b.
- the sharpening part 16b is designed here as a rectangular ceramic tile whose outer edge is provided with a rounding 18b.
- a holder 12b which preferably again consists of plastic.
- the sharpening part 16b is replaceable.
- FIG. 4 A further variant of a sharpener according to the invention is shown in FIG. 4 and designated overall by 10c.
- the sharpening member 16c is formed at the outer end of a cylindrical ceramic rod 14c.
- the ceramic rod 14c is designed on both sides with planar side surfaces 34c running towards one another, which terminate in a common rounding 18c.
- the ceramic rod 14c itself can be used as a holder or handle part.
- a further embodiment of a sharpener according to the invention is denoted overall by 10d.
- the point angle is preferably between 20 ° and 80 °, more preferably between 30 ° and 60 °.
- the sharpening element 16d is bounded by two side surfaces 34d.
- the razor blades 24, 26 of a multi-blade head are preferably withdrawn with one of the two side surfaces 34d.
- the sharpening element 16d is, as previously described approximately with reference to FIG. 3, suitably received on a holder.
- FIG. 7 a further variant of a sharpener according to the invention is denoted overall by 10e.
- a plurality of sharpening elements 16e are arranged in the form of triangular tips at the end of a small plate, so that the overall result is a sawtooth-shaped course.
- the side surfaces 34e of the sharpening elements 16e are used to pull razor blades on multi-blade heads, which can be removed in one operation.
- the wafer is in turn suitably received on a holder (not shown).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710038792 DE102007038792A1 (en) | 2007-08-08 | 2007-08-08 | Sharpener for sharpening blades, especially razor blades |
PCT/EP2008/006425 WO2009018994A1 (en) | 2007-08-08 | 2008-08-05 | Sharpener for sharpening blades, especially razor blades |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2183078A1 true EP2183078A1 (en) | 2010-05-12 |
Family
ID=40029200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08785351A Withdrawn EP2183078A1 (en) | 2007-08-08 | 2008-08-05 | Sharpener for sharpening blades, especially razor blades |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2183078A1 (en) |
DE (2) | DE102007038792A1 (en) |
WO (1) | WO2009018994A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2014001B1 (en) * | 2014-12-18 | 2016-07-25 | Franciscus Schutmaat Benno | Sharpening device for manual sharpening of razor blades. |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH248563A (en) * | 1945-01-03 | 1947-05-15 | Scala Pietro | Device for removing razor blades. |
US2422048A (en) * | 1945-05-22 | 1947-06-10 | John W Sharp | Safety-razor blade sharpener |
US3861087A (en) | 1972-03-08 | 1975-01-21 | Fletcher Engineering Inc | Tool sharpener |
DE19654042A1 (en) * | 1996-07-11 | 1998-01-15 | Wolfgang Plankenhorn | Sharpener for blades on knives and scissors |
DE202005001545U1 (en) * | 2005-02-01 | 2005-04-07 | Kurz Ernst S | Tool for sharpening multi blade wet razor has an array of conical sharpening elements which fits into the blade spacing |
US20060194529A1 (en) * | 2005-02-25 | 2006-08-31 | Smith Richard S | Retractable abrasive sharpener and carrying case |
-
2007
- 2007-08-08 DE DE200710038792 patent/DE102007038792A1/en not_active Withdrawn
-
2008
- 2008-08-05 EP EP08785351A patent/EP2183078A1/en not_active Withdrawn
- 2008-08-05 WO PCT/EP2008/006425 patent/WO2009018994A1/en active Application Filing
- 2008-08-05 DE DE200820018186 patent/DE202008018186U1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2009018994A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009018994A1 (en) | 2009-02-12 |
DE102007038792A1 (en) | 2009-02-19 |
DE202008018186U1 (en) | 2011-12-19 |
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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 |
|
17P | Request for examination filed |
Effective date: 20100308 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
17Q | First examination report despatched |
Effective date: 20100712 |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BRENNER, THORSTEN Owner name: WESCHENFELDER, HEINZ |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20111212 |