EP0074684A2 - Shaving apparatus - Google Patents
Shaving apparatus Download PDFInfo
- Publication number
- EP0074684A2 EP0074684A2 EP82201106A EP82201106A EP0074684A2 EP 0074684 A2 EP0074684 A2 EP 0074684A2 EP 82201106 A EP82201106 A EP 82201106A EP 82201106 A EP82201106 A EP 82201106A EP 0074684 A2 EP0074684 A2 EP 0074684A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting member
- cutting
- shaving
- cutting members
- internal
- 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.)
- Granted
Links
Images
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
- B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
Definitions
- the invention relates to a shaving apparatus comprising an external cutting member having a shaving portion formed with hair-entry apertures and an internal cutting member which is rotatable relative to the external cutting member and which comprises cutting elements which extend in an axial direction towards said shaving portion.
- Such a shaving apparatus is known from Netherlands Patent Application no. 72 17 486 (PHN 6638).
- PPN 6638 the free ends of the cutting elements are in contact with the inner side of the shaving portion of the external cutting member.
- this will produce annoying noise and wear will occur at the areas of contact, whilst the external cutting member may become uncomfortably hot due to friction.
- the known construction is such that the clearance between the two cutting members may vary as a result of forces obtaining during shaving, so that the clearance between the cutting members may become too large for an effective shaving action.
- the invention is characterized in that the internal and external cutting members are provided with separate corresponding bearing portions for rotationally supporting the two cutting members relative to each other in the axial direction.
- One embodiment of the invention is characterized in that the two cutting members are also rotationally supported relative to each other in the radial direction.
- FIG. 1 Further embodiments are characterized in that the two cutting members are provided with flanges which cooperate to form a plain bearing, or in that the two cutting members are rotationally supported relative to each other by means of at least one ball-bearing or at least one spiral-groove bearing.
- the shaving apparatus shown in Figures 1 and 2 comprises a housing 1, of which a part is formed as a holder 2 for three external cutting members 3.
- the cutting members 3 are formed with slit-like hair entry apertures 4, which are represented by a single line in Fig. 1 and which are located in an annular shaving portion 5 of each cutting member.
- each internal cutting member 6 is arranged at the inner side of each external cutting member 3.
- Each internal cutting member 6 mainly comprises a plate-shaped body 7 and cutting elements 8 which extend in an axial direction towards the shaving portion 5 of the associated external cutting member.
- each internal cutting member 6 is coupled to the electric motor 13, to be rotated thereby relative to the associated external cutting member 3.
- the gear-wheel 10 is journalled on a pin 14 mounted in a mounting plate 15.
- the gear-wheel 10 formed with a recess 16 which is closed by a cover 17.
- the recess 16 engages with a flange 18 at the end of the hollow spindle 9.
- a cylindrical portion 20 of the spindle 9 hears against the cutting member 6 to transmit said force to this cutting member and via this cutting member to the associated external cutting member 3, so that a flange 21 on the rim of the external cutting member 3 is urged against the holder 2.
- the cutting members 3 and 6, together with the spindle 9, can be pressed inwards against the action of the spring 19 by external forces such as those which may occur during use of the shaving apparatus.
- a coupling for transmitting the rotary movement of the spindle 9 to the internal cutting member 6 is formed by an end portion 22 of the spindle of rectangular cross-section engaging in a corresponding rectangular coupling aperture 23 in the cutting member 6.
- a peripheral portion of the plate-shaped body 7 of each internal cutting member 6 forms a flange 24 which is in contact with a flange 25 on the rim of the associated external cutting member 3.
- the respective clntact surfaces 26 and 27 of the flanges 24 and 25 constitute a plain bearing by means of which the two cutting members 3 and 6 are journalled relative to each other.
- the clearance 28 between the face ends of the cutting elements 8 and the shaving portion 5 can now be optimized for an effective shaving action.
- the cutting elements 8 and the shaving portion 5 do not touch each other, so that these parts are not subject to wear and no noise and heat are produced at the location of the shaving portion as a result of friction.
- the sliding contact between the contact surfaces 26 and 27 of the flanges, 24 and 25 can be optimized, so that a substantial improvement of the bearing arrangement is obtained in comparison with that attainable between the ends of the cutting elements 8 and the shaving portion 5 with the hair-entry apertures 4, with the result that less power is required for driving the internal cuttting members 6.
- the internal cutting member 6 comprises a hollow cylindrical, central boss 29 whose that end surface 30 constitutes a plain bearing with the surface 31 of the central recessed portion 32 of the external cutting member 3.
- the cutting members can be centred relative to each other by providing a slight clearance between the ring of cutting elements 8 and the recessed portion 32.
- the two cutting members 3 and 6 are again provided with flanges 33 and 34 respectively.
- the flange 34 is formed by a peripheral portion of a disk 35 to which the internal cutting member 6 is secured. Between the two flanges a ball-bearing 36 is arranged.
- the external cutting member 3 comprises a bottom plate 37 and the internal cutting member 6 is fixed on a journal 38.
- the journal 38 is formed with an operture 39 for coupling it to the coupling spindle 9.
- An annular disc 40 is movable axially on the journal 38.
- spiral-groove axial bearings 41 and 42 respectively are arranged, whilst a spiral-groove radial bearing 43 is arranged between the journal 38 and the bottom plate 37.
- a cup spring 45 is arranged, by means of which the spiral-groove bearings 41 and 42 are urged into position.
- ring-shaped raised portions 46 and 47 on the internal cutting member 6 and the metal annular disc 40 respectively engage in corresponding grooves 48 and 49 respectively in the bottom plate 37 to form seals. Hair cuttings can be removed through an opening 50 in the bottom plate 37.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
- Formation And Processing Of Food Products (AREA)
Abstract
Description
- The invention relates to a shaving apparatus comprising an external cutting member having a shaving portion formed with hair-entry apertures and an internal cutting member which is rotatable relative to the external cutting member and which comprises cutting elements which extend in an axial direction towards said shaving portion.
- Such a shaving apparatus is known from Netherlands Patent Application no. 72 17 486 (PHN 6638). In this apparatus the free ends of the cutting elements are in contact with the inner side of the shaving portion of the external cutting member. During use of the apparatus this will produce annoying noise and wear will occur at the areas of contact, whilst the external cutting member may become uncomfortably hot due to friction. Moreover, the known construction is such that the clearance between the two cutting members may vary as a result of forces obtaining during shaving, so that the clearance between the cutting members may become too large for an effective shaving action.
- It is an object of the invention to mitigate the aforementioned disadvantages and to this end the invention is characterized in that the internal and external cutting members are provided with separate corresponding bearing portions for rotationally supporting the two cutting members relative to each other in the axial direction.
- One embodiment of the invention is characterized in that the two cutting members are also rotationally supported relative to each other in the radial direction.
- Further embodiments are characterized in that the two cutting members are provided with flanges which cooperate to form a plain bearing, or in that the two cutting members are rotationally supported relative to each other by means of at least one ball-bearing or at least one spiral-groove bearing.
- Some embodiments of the invention will now be described in more detail, by way of example, with reference to the drawings.
-
- Fig. 1 is a front view of a shaving apparatus comprising three external cutting members.
- Fig. 2 shows the shaving apparatus of Fig. 1 in side view and partlyin a sectional view taken on the line II-II in Fig. 1.
- Figures 3 to 6 are sectional views of some examples of an internal and an external cutting member.
- The shaving apparatus shown in Figures 1 and 2 comprises a
housing 1, of which a part is formed as aholder 2 for threeexternal cutting members 3. Thecutting members 3 are formed with slit-like hair entry apertures 4, which are represented by a single line in Fig. 1 and which are located in anannular shaving portion 5 of each cutting member. - As is shown for one extend cutting member in the sectional part of Fig. 2, an
internal cutting member 6 is arranged at the inner side of eachexternal cutting member 3. Eachinternal cutting member 6 mainly comprises a plate-shaped body 7 andcutting elements 8 which extend in an axial direction towards the shavingportion 5 of the associated external cutting member. - By means of a hollow spindle 9 (Fig. 2), gear-
wheels shaft 12, eachinternal cutting member 6 is coupled to theelectric motor 13, to be rotated thereby relative to the associatedexternal cutting member 3. The gear-wheel 10 is journalled on apin 14 mounted in amounting plate 15. The gear-wheel 10 formed with arecess 16 which is closed by acover 17. Therecess 16 engages with aflange 18 at the end of thehollow spindle 9. By giving the flange 18 a non-circular, for example square, shape and by correspondingly shaping the recess 16 a coupling is obtained for transmitting the rotary movement of the gear-wheel 10 to thespindle 9. Aspring 19, which for the greater part is located within thehollow spindle 9 and which is compressed between thehollow spindle 9 and the gear-wheel 10, exerts a force on thespindle 9 in the direction of theinternal cutting member 6. Acylindrical portion 20 of thespindle 9 hears against thecutting member 6 to transmit said force to this cutting member and via this cutting member to the associatedexternal cutting member 3, so that aflange 21 on the rim of theexternal cutting member 3 is urged against theholder 2. Thecutting members spindle 9, can be pressed inwards against the action of thespring 19 by external forces such as those which may occur during use of the shaving apparatus. - A coupling for transmitting the rotary movement of the
spindle 9 to theinternal cutting member 6 is formed by anend portion 22 of the spindle of rectangular cross-section engaging in a correspondingrectangular coupling aperture 23 in thecutting member 6. - The coupling to the
electric motor 13, as described in the foregoing, is identical for the threeinternal cutting members 6 of the apparatus shown in Figures 1 and 2, the three gear-wheels 10 being in mesh with the one centrally arranged gear-wheel 11 on themotor shaft 12. - In the embodiment shown in Fig. 3 a peripheral portion of the plate-
shaped body 7 of eachinternal cutting member 6 forms aflange 24 which is in contact with aflange 25 on the rim of the associatedexternal cutting member 3. Therespective clntact surfaces 26 and 27 of theflanges cutting members clearance 28 between the face ends of thecutting elements 8 and the shavingportion 5 can now be optimized for an effective shaving action. Thecutting elements 8 and the shavingportion 5 do not touch each other, so that these parts are not subject to wear and no noise and heat are produced at the location of the shaving portion as a result of friction. By a suitable choice of materials and lubricants the sliding contact between thecontact surfaces 26 and 27 of the flanges, 24 and 25 can be optimized, so that a substantial improvement of the bearing arrangement is obtained in comparison with that attainable between the ends of thecutting elements 8 and the shavingportion 5 with the hair-entry apertures 4, with the result that less power is required for driving theinternal cuttting members 6. - It is now also possible to use a
heavier compression spring 19, which reduces the likelihood of the two cutting members being moved apart by forces which occur during shaving. - In the embodiment shown in Fig. 4 the
internal cutting member 6 comprises a hollow cylindrical,central boss 29 whose thatend surface 30 constitutes a plain bearing with thesurface 31 of the central recessedportion 32 of theexternal cutting member 3. In general, the cutting members can be centred relative to each other by providing a slight clearance between the ring of cuttingelements 8 and therecessed portion 32. - In the embodiment shown in Fig. 5 the two
cutting members flanges flange 34 is formed by a peripheral portion of adisk 35 to which theinternal cutting member 6 is secured. Between the two flanges a ball-bearing 36 is arranged. - In the embodiment shown in Fig. 6 the
external cutting member 3 comprises abottom plate 37 and theinternal cutting member 6 is fixed on a journal 38. The journal 38 is formed with an operture 39 for coupling it to thecoupling spindle 9. Anannular disc 40 is movable axially on the journal 38. Between thebottom plate 37 and theinternal cutting member 6 and between thebottom plate 37 and theannular disc 40, spiral-grooveaxial bearings radial bearing 43 is arranged between the journal 38 and thebottom plate 37. On aflange 44 at the end of the journal 38 acup spring 45 is arranged, by means of which the spiral-groove bearings - In order to prevent soiling or contaimination of the spiral-groove bearings, ring-shaped raised
portions internal cutting member 6 and the metalannular disc 40 respectively engage incorresponding grooves bottom plate 37 to form seals. Hair cuttings can be removed through an opening 50 in thebottom plate 37. - It is alternatively possible to use only one spiral-groove bearing by, for example, replacing the ball-bearing in the embodiment shown in Fig. 5 or the plain bearing in the embodiments shown in Figures 3 and 4 by a spiral-groove bearing.
- In the embodiment using plain bearings, as shown in Figures 3 and 4, the elements required for this, such as rings or bushings may alternatively be secured to the cutting members as separate components.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT82201106T ATE19986T1 (en) | 1981-09-11 | 1982-09-08 | ELECTRIC SHAVER. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8104202 | 1981-09-11 | ||
NL8104202A NL8104202A (en) | 1981-09-11 | 1981-09-11 | SHAVER. |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0074684A2 true EP0074684A2 (en) | 1983-03-23 |
EP0074684A3 EP0074684A3 (en) | 1983-12-28 |
EP0074684B1 EP0074684B1 (en) | 1986-05-28 |
Family
ID=19838045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82201106A Expired EP0074684B1 (en) | 1981-09-11 | 1982-09-08 | Shaving apparatus |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0074684B1 (en) |
JP (1) | JPS5850983A (en) |
AT (1) | ATE19986T1 (en) |
DE (1) | DE3271382D1 (en) |
NL (1) | NL8104202A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0544065A1 (en) * | 1991-11-26 | 1993-06-02 | Matsushita Electric Works, Ltd. | Rotary dry shaver |
EP0860247A1 (en) * | 1997-02-25 | 1998-08-26 | Izumi Products Company | Electric shaver |
WO1999050033A1 (en) * | 1998-03-27 | 1999-10-07 | Koninklijke Philips Electronics N.V. | Shaving apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0842785A (en) * | 1994-08-01 | 1996-02-16 | Otani Sakurai Tekko Kk | Versatile plural leg structure |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL97479C (en) * | 1900-01-01 | |||
US2923057A (en) * | 1953-10-05 | 1960-02-02 | Philips Corp | Shear plate and cutter arrangement for a dry shaver |
-
1981
- 1981-09-11 NL NL8104202A patent/NL8104202A/en not_active Application Discontinuation
-
1982
- 1982-09-08 JP JP57156483A patent/JPS5850983A/en active Granted
- 1982-09-08 DE DE8282201106T patent/DE3271382D1/en not_active Expired
- 1982-09-08 AT AT82201106T patent/ATE19986T1/en active
- 1982-09-08 EP EP82201106A patent/EP0074684B1/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL97479C (en) * | 1900-01-01 | |||
US2923057A (en) * | 1953-10-05 | 1960-02-02 | Philips Corp | Shear plate and cutter arrangement for a dry shaver |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0544065A1 (en) * | 1991-11-26 | 1993-06-02 | Matsushita Electric Works, Ltd. | Rotary dry shaver |
US5283953A (en) * | 1991-11-26 | 1994-02-08 | Matsushita Electric Works, Ltd. | Rotary dry shaver |
EP0860247A1 (en) * | 1997-02-25 | 1998-08-26 | Izumi Products Company | Electric shaver |
US6212776B1 (en) | 1997-02-25 | 2001-04-10 | Izuma Products Company | Electric shaver |
WO1999050033A1 (en) * | 1998-03-27 | 1999-10-07 | Koninklijke Philips Electronics N.V. | Shaving apparatus |
US6145200A (en) * | 1998-03-27 | 2000-11-14 | U.S. Philips Corporation | Shaving apparatus |
CN1104308C (en) * | 1998-03-27 | 2003-04-02 | 皇家菲利浦电子有限公司 | Shaving apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE3271382D1 (en) | 1986-07-03 |
EP0074684A3 (en) | 1983-12-28 |
ATE19986T1 (en) | 1986-06-15 |
JPH0212598B2 (en) | 1990-03-22 |
EP0074684B1 (en) | 1986-05-28 |
NL8104202A (en) | 1983-04-05 |
JPS5850983A (en) | 1983-03-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6145200A (en) | Shaving apparatus | |
US8671580B2 (en) | Low friction rotary knife | |
US3754802A (en) | Self-aligning bearing assembly | |
US4097094A (en) | Journal bearing assembly with flexible support and viscous damping | |
US4014596A (en) | Self-centerable bearing | |
EP0074684A2 (en) | Shaving apparatus | |
EP0179515A1 (en) | Dry-shaving apparatus | |
US2763800A (en) | Current collector contact means | |
US4504754A (en) | Electric motor | |
EP0157450B1 (en) | Shaving unit | |
GB2057955A (en) | Dry-shaving apparatus | |
US3714711A (en) | Cutter drive member means for electric dry shaver | |
JPH0428214Y2 (en) | ||
EP0725700A1 (en) | Hand-held reciprocating tool | |
US5857780A (en) | Self-aligning/rigid spherical bearing assembly | |
US1730004A (en) | Safety razor | |
US3770331A (en) | Combination bearing seat for motors | |
US4633112A (en) | Flat electric motor with adjustable bearing support | |
US4807359A (en) | Dry-shaving apparatus | |
US2247798A (en) | Shaver | |
EP0035639B1 (en) | Compliant rotary member and friction drive | |
US2984528A (en) | Thrust bearing arrangement for rotating machines | |
US4698908A (en) | Shaving appliance | |
EP0038923A2 (en) | Rotary tool cutting cartridge | |
US4755066A (en) | Self-aligning bearing assembly |
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: 19820908 |
|
AK | Designated contracting states |
Designated state(s): AT DE FR GB NL |
|
R17P | Request for examination filed (corrected) |
Effective date: 19830121 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): AT DE FR GB NL |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE FR GB NL |
|
REF | Corresponds to: |
Ref document number: 19986 Country of ref document: AT Date of ref document: 19860615 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3271382 Country of ref document: DE Date of ref document: 19860703 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19860915 Year of fee payment: 5 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19870930 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19890908 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19900401 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19920828 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19920923 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19921125 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19930908 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19930908 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19940531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19940601 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |