EP3388208A1 - Lame fixe, ensemble de lames et appareil pour couper les cheveux - Google Patents

Lame fixe, ensemble de lames et appareil pour couper les cheveux Download PDF

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Publication number
EP3388208A1
EP3388208A1 EP17165664.8A EP17165664A EP3388208A1 EP 3388208 A1 EP3388208 A1 EP 3388208A1 EP 17165664 A EP17165664 A EP 17165664A EP 3388208 A1 EP3388208 A1 EP 3388208A1
Authority
EP
European Patent Office
Prior art keywords
stationary blade
blade
teeth
stationary
hair
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Withdrawn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
EP17165664.8A
Other languages
German (de)
English (en)
Inventor
Kin Fatt Phoon
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
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 Koninklijke Philips NV filed Critical Koninklijke Philips NV
Priority to EP17165664.8A priority Critical patent/EP3388208A1/fr
Publication of EP3388208A1 publication Critical patent/EP3388208A1/fr
Withdrawn legal-status Critical Current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
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3846—Blades; Cutters
    • 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
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/06—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving co-operating cutting elements both of which have shearing teeth

Definitions

  • the present disclosure relates to a stationary blade for a blade set for a hair cutting appliance, the stationary blade comprising a support plate, and a series of stationary blade teeth extending from the support plate.
  • the present disclosure further relates to a blade set for a hair cutting appliance the blade set comprising a stationary blade and a movable blade, wherein the stationary blade and the movable blade cooperate to cut hair.
  • the present disclosure further relates to a hair cutting appliance that incorporates a respective blade set that may be provided at a cutting head of the appliance.
  • WO 2013/150412 A1 discloses a stationary blade for a blade set of an electrically operated hair cutting appliance, the blade including a first wall and a second wall, each wall defining a first surface, a second surface facing away from the first surface, and a laterally extending leading edge defining a plurality of laterally spaced apart longitudinally extending projections, wherein the first surfaces of the first and second walls face each other, at least at their leading edges, while facing projections along the leading edges of the first and second walls are mutually connected at their tips to define a plurality of generally U-shaped teeth, and the first surfaces of the first and second walls define a laterally extending guide slot for a movable blade of said blade set between them, wherein the projections of the first wall have an average thickness that is less than an average thickness of the projections of the second wall.
  • Cutting appliances are well known in the art. Cutting appliances may particularly involve hair cutting appliances. In a more general context, the present disclosure addresses personal care appliances, particularly grooming appliances. Grooming appliances involve, but are not limited to, hair cutting appliances, particularly trimming appliances, shaving appliances, and combined (dual-purpose or multi-purpose) appliances.
  • Hair cutting appliances are used for cutting human hair, and occasionally animal hair. Hair cutting appliances may be used for cutting facial hair, particularly for shaving and/or for beard trimming. Further, cutting appliances are used for cutting (involving shaving and trimming) head hair and body hair.
  • the hair cutting appliance In the trimming mode, the hair cutting appliance is typically equipped with a so-called spacing comb that is arranged to space away the blade set of the hair cutting appliance from the skin. Depending on the effective (offset) length of the spacing comb, a remaining hair length after the trimming operation may be defined.
  • Hair cutting appliances in the context of the present disclosure typically comprise a cutting head which may be referred to as processing head.
  • a blade set is provided, the blade set comprising a so-called stationary blade and a so-called movable blade.
  • the movable blade is moved with respect to the stationary blade which may involve that respective cutting edges cooperate with one another to cut hair.
  • a stationary blade is arranged to be attached to the hair cutting appliance in such a way that a drive unit thereof is not cooperating with the stationary blade. Rather, the drive unit is typically coupled with the movable blade and arranged to set the movable blade into motion with respect to the stationary blade.
  • the stationary blade may be, in some embodiments, fixedly attached to a housing of the hair cutting appliance.
  • the stationary blade is arranged at the housing of the hair cutting appliance in a pivotable fashion. This may for instance enable a contour-following feature of the cutting head of the hair cutting appliance. Therefore, the term stationary blade, as used herein, shall not be interpreted in a limiting sense. Further, needless to say, when the hair cutting appliance as such is moved, also the stationary blade is moved. However, the stationary blade is not arranged to be actively actuated to cause a cutting action. Rather, the movable blade is arranged to be moved with respect to the stationary blade.
  • the stationary blade may also be referred to as guard blade.
  • the stationary blade is, at least in part, arranged between the movable blade and the hair or skin of the user.
  • the term user shall refer to a person or subject whose hair is being processed or cut. In other words, the user and the operator of the hair cutting appliance are not necessarily one and the same person. The term user may also involve a client at a hairdresser or barber shop.
  • the present disclosure relates to hair cutting appliances that are capable of both trimming and shaving operations.
  • hair cutting appliances are known that incorporate a dual cutting arrangement including a first blade set that is suitably configured for trimming and a second blade set that is suitably configured for shaving.
  • the shaving blade set may include a perforated foil that cooperates with a movable cutting element.
  • the trimming blade set may include two blades that are respectively provided with teeth that cooperate with one another.
  • the perforated foil that forms the stationary part of the shaving blade set may be much thinner than the stationary blade of a trimming blade set which, primarily for strength reasons, must be considerably thicker in conventional appliances.
  • the above WO 2013/150412 A1 proposes to provide the stationary blade with two walls, one of which is facing the skin of the user and the other one facing away from the user.
  • the two walls are connected to one another and define, in a lateral view, a U-shaped profile that forms a guide slot for a movable cutter blade.
  • the stationary blade is a double-walled blade.
  • the blade set is suitable for shaving as the effective thickness of the first wall of the stationary blade is considerably reduced.
  • the blade set for a hair cutting appliance that represents a beneficial tradeoff between skin catching capabilities and the avoidance of skin irritations.
  • the blade set particularly the stationary blade thereof, is configured to facilitate hair catching and hair lifting which may have a positive effect on the performance of the appliance.
  • the stationary blade is arranged in such a way that skin doming may be reduced or even prevented which may result in a rather smooth and preferably irritation-free or irritation-reduced grooming operation.
  • a stationary blade shall be presented that maintains or even improves the hair cutting capability of the blade set and a respectively equipped hair cutting appliance. Further, a stationary blade shall be presented that improves the performance of the hair cutting appliance while maintaining user safety, particularly involving a reduced risk of skin injuries and a reduced risk of jamming.
  • a stationary blade shall be presented that is easy to manufacture and that maintains its properties for a considerably long term.
  • the blade set can be formed in a space saving fashion without adversely affecting the effective cutting width.
  • the blade set may be provided with two opposite leading edges that are respectively provided with a series of teeth.
  • a stationary blade for a blade set for a hair cutting appliance comprising:
  • This aspect is based on the insight that in this way both the hair catching capability and the skin protecting characteristics of the stationary blade and a respectively equipped hair cutting appliance may be improved.
  • a considerably wide zone for hair catching and a considerably narrow zone for the cutting action may be provided.
  • hair catching and hair lifting is simplified and, as the hair cutting appliance is advanced through hair, caught hairs may be readily fed to the considerably narrow zone at the rear portion.
  • a slot having a wider portion and a narrower portion may be defined in this way.
  • a relatively wide slot may improve the hair catching performance of the appliance and, on the downside, increase the risk of skin injuries, due to skin doming at the slot.
  • a relatively narrow slot may reduce the risk of skin damages, as skin doming is decreased at the narrow slot.
  • this is generally associated with a reduced skin catching capacity and performance of the blade set.
  • the stationary blade teeth are not provided with generally parallel (lateral) edges or flanks along their longitudinal extension. Rather, the stationary blade teeth are - in plan view/top view - stepped along their longitudinal extension. In other words, at the width step, a more or less abrupt change in width is present.
  • stationary blade teeth are generally tapered and/or pointed at their tips.
  • a considerable and clearly noticeable width change is present in the intermediate portion that is present between the frontal portion and the rear portion of the stationary blade teeth.
  • a greater slope or inclination with respect to the (longitudinal) main extension direction of the stationary blade teeth than in neighboring regions is present. The above applies particularly in a top view of the stationary blade.
  • the frontal portion, the intermediate portion, and the rear portion of neighboring stationary blade teeth define a wide receiving zone and a narrow cutting zone.
  • the stationary blade cooperates with a corresponding movable blade of the blade set only in the cutting zone.
  • respective teeth of the movable blade may engage the stationary blade teeth in the cutting zone in a scissor action, but not in the receiving zone.
  • the movable blade teeth do not extend into the receiving zone of the stationary blade teeth.
  • cutting edges are provided at the stationary blade teeth. Accordingly, in the receiving zone, it is not necessary to provide (sharp) cutting edges as generally no cutting action takes place therein.
  • cutting edges are provided that are arranged to cooperate with the cutting edges that are provided in the cutting zone of the stationary blade teeth.
  • neighboring stationary blade teeth form respective narrowing tooth slots therebetween, wherein the width step is formed in an intermediate zone of the longitudinal extension thereof.
  • the width step is formed in an intermediate zone of the longitudinal extension thereof.
  • the tooth slots are, when viewed in a top view, funnel shaped.
  • the tooth slots comprise a wide opening at the front portion and a rather narrow end at the rear portion. This improves the hair catching performance at the frontal portion and the skin comfort in the rear portion.
  • the tooth slots comprise a decreasing width from a frontal region to a rear region thereof.
  • This arrangement does not exclude that basically parallel (sub-)sections are provided at the frontal portion and/or the rear portion of neighboring teeth.
  • basically the greatest slope or inclination is present in the intermediate portion to define the width step.
  • opposite flanks of neighboring stationary blade teeth are basically parallel to each other in the frontal portion, and basically parallel to each other in the rear portion.
  • a distance between the opposite flanks in the frontal portion is greater than the respective distance of the opposite flanks in the rear portion.
  • the width step forms a transition between the differently spaced apart parallel portions.
  • opposite flanks of neighboring stationary blade teeth are basically parallel to each other in the frontal portion, and inclined to each other in the rear portion.
  • the opposite flanks are basically parallel in the receiving zone and somewhat tapered or sloped in the cutting zone.
  • the width step may be defined by an inclined transition between the respective sections of the flanks, wherein an inclination angle is greater than the inclination angle in the rear portion.
  • opposite flanks of neighboring stationary blade teeth are basically inclined to each other in the frontal portion, and inclined to each other in the rear portion.
  • basically no parallel sections of opposite flanks of the stationary blade teeth are provided.
  • the width step is defined by an inclined transition between the frontal and the rear section of the opposite flanks, wherein an inclination angle at the width step is greater than any of the inclination angle in the frontal portion and the rear portion.
  • the inclination angles in the frontal portion and the rear portion of opposite flanks may be the same, or maybe different.
  • the inclination angle of opposite flanks in the rear portion may be smaller than, or may be greater than the inclination angle in the frontal portion.
  • opposite width step flanks in the intermediate portion of neighboring stationary blade teeth are more inclined with respect to a main extension direction of the stationary blade teeth than any of the opposite flanks in the frontal portion and the rear portion.
  • a clear and distinct width step is formed in the intermediate portion of the stationary blade teeth.
  • the inclination at the width step is also greater than the inclination at the tips of the teeth.
  • any opening angle defined by opposite flanks of neighboring stationary blade teeth is facing a respective leading end of the stationary blade.
  • the tooth slots between neighboring stationary blade teeth are funnel shaped or, at least, generally tapered along their longitudinal extension.
  • the width step is arranged, along the longitudinal extension of the stationary blade teeth, in a range of 35 % to 65 % of the overall length of the stationary blade teeth.
  • the width step is basically arranged in a central section of the longitudinal extension of the stationary blade teeth.
  • a blade set for a hair cutting appliance comprising:
  • the stationary blade teeth and the movable blade teeth overlap one another in a cutting zone at the rear portion of the stationary blade teeth.
  • both the movable blade teeth and the stationary blade teeth are provided with respective cutting edges.
  • At least a partial (longitudinal) overlap between the stationary blade teeth and the movable blade teeth is present.
  • the movable blade teeth do not protrude beyond the width step towards the leading edge of the blade set.
  • the blade set may comprise a basically linear leading edge defined by a respective series of stationary blade teeth (and movable blade teeth).
  • a basically reciprocating and substantially linear relative movement between the movable blade and the stationary blade is present.
  • this does not exclude embodiments, wherein an at least somewhat curved (oscillatory) movement path of the movable blade with respect to the stationary blade is present. This may be caused, for instance, by a respective guiding linkage for the movable blade.
  • curved or even circular arrangements of blade sets may be envisaged.
  • a somewhat curved or circular leading edge defined by a respective arrangement of stationary blade teeth (and movable blade teeth) maybe provided. Therefore, whenever reference herein is made to a longitudinal direction, a lateral direction and/or a height direction, this shall not be interpreted in a limiting sense.
  • a curved or circular blade set may be defined and described with reference to similar directions, but also with reference to polar directions and/or further appropriate directional information.
  • Cartesian coordinate systems, but also polar coordinate systems and further appropriate coordinate systems may be used to describe linear and/or curved designs of blade sets.
  • the blade set is provided with two opposite leading edges, i.e. two opposite series of stationary blade teeth and movable blade teeth. In this way, both a pulling and a pushing movement of the blade set may be used for the cutting operation. Further, in this way the hair cutting appliance is more flexible which may facilitate styling operations and hair cutting operations in hard-to-reach areas.
  • a hair cutting appliance that is arranged to be moved through hair to cut hair, the appliance comprising:
  • the cutting head maybe referred to as processing head.
  • the hair cutting appliance may be referred to as grooming appliance.
  • a hair cutting appliance may be arranged as a trimming appliance, a shaving appliance, and/or a combined trimming and shaving appliance.
  • the appliance may be arranged as an electrically powered appliance.
  • the appliance may be arranged as a wireless appliance, powered by an integrated battery, or as a line-powered appliance.
  • Fig. 1 shows a perspective frontal view of a hair cutting appliance 10.
  • the hair cutting appliance 10 is arranged as an appliance that is capable of both trimming and shaving.
  • the appliance 10 comprises a housing 12 which is arranged in an elongated fashion. At the housing 12, a handle section 14 is defined. In the housing 12, a drive unit 16 is arranged. Further, a battery 18 may be arranged in the housing 12. In Fig. 1 , the drive unit 16 and the battery 18 are represented by dashed blocks. At the housing 12, operator controls 20 such as on/off buttons and the like may be provided.
  • the appliance 10 comprises a processing head 24 that is attached to the housing 12.
  • the processing head 24 comprises a blade set 26.
  • the blade set 26, particularly a movable blade thereof, may be actuated and driven by the drive unit 16 in a reciprocating fashion, refer also to the double arrow 28 in Fig. 1 .
  • respective teeth of the blades of the blade set 26 are moved with respect to one another, thereby effecting a cutting action.
  • a top side or top surface of the blade set 26 is indicated by 30 in Fig. 1 .
  • the blades of the blade set 26 maybe arranged at a first leading edge 32 and, in at least some embodiments, at a second leading edge 34 that is opposite to the first leading edge 32.
  • the first leading edge 32 maybe also referred to as frontal leading edge.
  • a second leading edge 34 maybe also referred to as rear leading edge.
  • a general advancing or moving direction of the appliance 10 is indicated in Fig. 1 by a double arrow 38.
  • the blade set 26 of the exemplary embodiment of Fig 1 is equipped with two leading edges 32, 34, a push and a pull movement may be used to cut hair.
  • stationary blades and blade sets 26 will be elucidated and described in more detail.
  • the blade sets 26 may be attached to the appliance 10, or to a similar appliance. It goes without saying the single features disclosed in the context of a respective embodiment maybe combined with any of the other embodiments, also in isolated fashion, thereby forming further embodiments that still fall under the scope of the present disclosure.
  • exemplary coordinate systems are shown for illustrative purposes.
  • an X-axis is assigned to a longitudinal direction.
  • a Y-axis is assigned to a lateral direction.
  • a Z-axis is assigned to a vertical (height) direction.
  • Respective associations of the axes/directions X, Y, Z with respective features and extensions of the blade set 26 can be derived from those Figures.
  • the coordinate system X, Y, Z is primarily provided for illustrative purposes and not intended to limit the scope of the disclosure. This involves that the skilled person may readily convert and transform the coordinate system when being confronted with further embodiments, illustrations and deviating view orientations.
  • a conversation of Cartesian coordinate systems into polar coordinate system may be envisaged, particularly in the context of a circular or curved blade set.
  • FIG. 2 to 5 exemplary embodiments of blade sets 26 that are operable in an appliance 10 as shown in Fig. 1 will be illustrated and described in more detail.
  • a perspective view of a blade set 26 for a processing head or cutting head 24 of a hair cutting appliance 10 is shown.
  • a cutting direction and/or a direction of a relative movement of blades of the blade set 26 is indicated by an arrow 28.
  • a top side of the blade set 26 that is facing the user when the appliance 10 is operated is indicated by 30.
  • the blade set 26 is provided with a first leading edge 32 and a second leading edge 34.
  • a stationary blade 32 of the blade set 26 is shown.
  • a movable blade (cutter blade) is covered by the stationary blade 42 in Fig. 2 .
  • Stationary blade teeth are indicated by 44.
  • the movable blade of the blade set 26 that is not visible in Fig. 2 is operated and actuated via a driving engagement element 48 that may also be referred to as driving bridge.
  • a driving or engagement slot is formed that is engaged by a driving pin 50 of a driving shaft 52.
  • the driving shaft 52 is rotated about a driving axis 54, refer to a curved arrow 56.
  • the driving pin 50 is off-centered with respect to the driving axis 54. Consequently, as the driving pin 50 is revolving, a reciprocating movement of the movable blade with respect to the stationary blade 42 is effected.
  • a pivot mechanism 58 which may be referred to as a contour following feature.
  • the mechanism 58 enables a certain pivot movement of the blade set 26 about the Y-axis.
  • Fig. 3 illustrates a similar arrangement of a blade set 26 comprising a stationary blade 42.
  • the stationary blade 42 illustrated in Fig. 3 includes a top wall 60 and a bottom wall 62 that define therebetween a guide slot 64. Further, the top wall 60 and the bottom wall 62 jointly define stationary blade teeth 44. Further, there is illustrated an adapter piece 66 in Fig. 3 which is only partially shown in cross-section. The adapter piece 66 is provided at a bottom side of the stationary blade 42. Via the adapter piece 66, the blade set 26 may be attached to a processing head 24 of a hair cutting appliance 10.
  • the guide slot 64 is arranged to accommodate therein a movable blade 70 of the blade set 26.
  • the movable blade 70 comprises a base plate 72 and a plurality of movable blade teeth 74 extending therefrom.
  • the movable blade 70 is movably received in the guide slot 64 defined by the bottom wall 62 and the top wall 60 of the stationary blade 42.
  • the movable blade 70 is actuable and movable with respect to the stationary blade 62 in the direction indicated by the double arrow 28 in Fig. 3 .
  • Fig. 4 and Fig. 5 illustrate partial top views of blade sets 26 that basically correspond to the exemplary embodiments illustrated in any of Fig. 1 , Fig. 2 and Fig. 3 .
  • the blade set 26 shown in Fig. 4 comprises a stationary blade 42 and a movable blade 70 that is basically covered by the stationary blade 42 and therefore shown in a dashed representation.
  • the stationary blade 42 comprises a support plate 78 from which a plurality of stationary blade teeth 44 extend.
  • a support plate 78 from which a plurality of stationary blade teeth 44 extend.
  • two opposite leading edges 32, 34 are provided which, however, shall not be interpreted in a limiting sense.
  • a partial overlap in the longitudinal extension between the stationary blade teeth 44 and the corresponding movable blade teeth 74 is present.
  • the stationary blade teeth 44 extend and protrude beyond the movable blade teeth 74.
  • hair that is to be processed by the blade set 26 first enters a receiving zone where the stationary blade teeth 44 extend beyond the movable blade teeth 74, and is then led to a cutting zone where the movable blade teeth 74 are provided to cooperate with the stationary blade teeth 44.
  • stationary blade teeth 44 In accordance with the present disclosure, specific designs for the stationary blade teeth 44 are proposed. With reference to Fig. 6, Fig. 7 and Fig. 8 , exemplary embodiments of stationary blades 142, 242, 342 are illustrated and described in more detail.
  • Fig. 6, Fig. 7 and Fig. 8 show partial top views of the stationary blades 142, 242, 342, wherein for illustrative purposes, also respective movable blades 70 having movable blade teeth 74 are shown (dashed line representation).
  • the teeth 44 of the stationary blade 142 shown in Fig. 6 extend from the support plate 78 in the longitudinal direction X. Along their longitudinal extension, the teeth 44 are provided with a frontal portion 84, a rear portion 86, and an intermediate portion 88 that is arranged therebetween. At the rear portion 86, the teeth 44 are connected to the support plate 78. At the frontal portion 84, tips 92 of the teeth 44 are provided.
  • a width step 94 is present.
  • the teeth 44 define a receiving zone 100 and a cutting zone 102.
  • the receiving zone 100 is generally wider (in the lateral direction Y) than the cutting zone 102.
  • tooth slots 104 defined between neighboring teeth 44 are funnel shaped.
  • a width or mean width of the receiving zone 100 is indicated by w 1 in Fig. 6 .
  • a width or mean width of the cutting zone 102 is indicated in Fig. 6 by w 2 .
  • the width w 2 in the cutting zone 102 is smaller than the width w 1 in the receiving zone 100.
  • the transition between the receiving zone 100 and the cutting zone 102 is formed by the width step 94 at respective neighboring stationary blade teeth 44.
  • Fig. 6 there is further indicated the longitudinal extension It of the stationary blade teeth 44.
  • the width step 94 is provided in a range of about 35 % to 65 % of the longitudinal extension It of the stationary blade teeth 44.
  • corresponding teeth 74 of the movable blade 70 merely extend in the cutting zone 102 and not beyond the width step 94 into to the receiving zone 100. Only in the cutting zone 102, at least a partial (longitudinal) overlap between the stationary blade 142 and the movable blade 70 is present.
  • the stationary blade teeth 44 are provided with cutting edges 112.
  • the movable blade teeth 74 are provided with cutting edges 114.
  • the cutting edges 112, 114 cooperate to cut hairs that are trapped therebetween.
  • frontal flanks 116 of neighboring teeth 44 are basically parallel to one another.
  • rear flanks 118 of opposite teeth 44 are parallel to one another.
  • transition flanks 120 that define the width step 94 therebetween a considerably great slope or inclination with respect to the longitudinal extension direction X of the teeth 44 is provided.
  • the frontal flanks 116 and the rear flanks 118 are basically parallel to the X direction (longitudinal direction).
  • the rear flanks 118 of opposite stationary blade teeth 44 are inclined to one another.
  • the frontal flanks 116 of the stationary blade teeth 44 thereof are basically parallel to one another.
  • the transition flanks 120 that define the width step 94 are inclined with respect to one another and with respect to the longitudinal direction X.
  • An angle of inclination of the transition flanks 120 with respect to the X direction is greater that an angle of inclination of the rear flanks 118 with respect to the X direction.
  • the frontal flanks 116 of opposite stationary blade teeth 44 are inclined with respect to one another.
  • the rear flanks 118 of opposite stationary blade teeth 44 are inclined with respect to one another.
  • the angle of inclination of the frontal flanks 116 and the rear flanks 118 with respect to the longitudinal direction X may be basically similar, or may be different.
  • the angle of inclination of the transition flanks 120 is greater than any of the angles of inclination of the frontal flanks 116 and the rear flanks 118.
  • any of the frontal flanks 116, the rear flanks 118 and the transition flanks 120 of the stationary blade teeth 44 may be basically curved instead of being strictly linear. Further, transitions, roundings or fillets between the respective zones or flanks at the stationary blade teeth may be present.
  • inclined edges may be provided, as already shown in Fig. 6, Fig. 7 and Fig. 8 .
  • a further exemplary embodiment of a hair cutting appliance 510 is illustrated.
  • the appliance 510 is basically arranged as a hair trimming appliance.
  • the appliance 510 comprises a housing 512 having a handle section 514.
  • controls 520 are present. Further, indicated by 522, further operator controls may be provided, for instance a length setting control.
  • a processing head or cutting head 524 is provided at a top end of the housing 512 that is facing away from the handle section 514.
  • a blade set 526 is provided at the cutting head 524. A top side of the blade set 526 that is facing the skin of the user when the appliance 510 is operated is indicated by 530.
  • the blade set 526 is moved in a moving/advancing direction 538 through hair to cut hair.
  • a main difference between the arrangements of the hair cutting appliances 10 of Fig. 1 and 510 of Fig. 9 is that the appliance 510 comprises a single leading edge 532 defined by respective teeth of a stationary blade 542 and a movable blade 570 thereof, refer also to Fig. 10 and Fig. 11 .
  • the stationary blade 542 illustrated in Fig. 10 and Fig. 11 does not comprise a bottom wall that is arranged at a bottom side of the movable blade 570.
  • Fig. 11 is an exploded view of the arrangement of Fig. 10 (at a different scale).
  • the stationary blade 542 comprises a support plate 578 from which a plurality of stationary blade teeth 544 extends in the longitudinal direction X.
  • the movable blade 570 is provided with a base plate 572 from which movable blade teeth 574 extend in the longitudinal direction.
  • a driving engagement element 548 is provided that is arranged to be attached to the movable blade 570. Via the driving engagement element 548, the movable blade 570 may be operated to be moved with respect to the stationary blade 542 in a reciprocating fashion, refer to the double-arrow 528 in Fig. 10 .
  • a guide spring 568 that acts as a rebound spring and a guide element for the movable blade 570.
  • a support frame 580 is illustrated that connects the stationary blade 542 to the housing 512 of the appliance 510.
  • blade set 526 of the hair cutting appliance 510 illustrated in Figs. 9 to 11 may incorporate the specific designs of the stationary blade teeth as described in any of Fig. 6, Fig. 7 and Fig. 8 .
EP17165664.8A 2017-04-10 2017-04-10 Lame fixe, ensemble de lames et appareil pour couper les cheveux Withdrawn EP3388208A1 (fr)

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EP17165664.8A EP3388208A1 (fr) 2017-04-10 2017-04-10 Lame fixe, ensemble de lames et appareil pour couper les cheveux

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Application Number Priority Date Filing Date Title
EP17165664.8A EP3388208A1 (fr) 2017-04-10 2017-04-10 Lame fixe, ensemble de lames et appareil pour couper les cheveux

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EP3388208A1 true EP3388208A1 (fr) 2018-10-17

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD914978S1 (en) 2019-10-18 2021-03-30 Church & Dwight Co., Inc. Hair removal apparatus
USD914977S1 (en) 2019-07-19 2021-03-30 Church & Dwight Co., Inc. Handle for hair removal apparatus
USD925830S1 (en) 2019-07-19 2021-07-20 Church & Dwight Co., Inc. Head assembly for hair removal apparatus
EP3865259A1 (fr) * 2020-02-14 2021-08-18 Panasonic Intellectual Property Management Co., Ltd. Lame de dispositif d'épilation et dispositif d'épilation comprenant ladite lame
USD936899S1 (en) 2019-10-18 2021-11-23 Church & Dwight Co., Inc. Hair removal apparatus
USD940958S1 (en) 2019-11-18 2022-01-11 Church & Dwight Co., Inc. Articulating blade assembly for hair removal device
USD942687S1 (en) 2019-11-18 2022-02-01 Church & Dwight Co., Inc. Articulating blade assembly for hair removal device
USD952946S1 (en) 2017-09-01 2022-05-24 Church & Dwight Co., Inc. Hair removal device

Citations (6)

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Publication number Priority date Publication date Assignee Title
DE73511C (de) * H. BLAND in Leichardt bei Sydney, Nortonstr Schafscheermaschine
US4152830A (en) * 1977-01-19 1979-05-08 U.S. Philips Corporation Hair-cutting
GB2435845A (en) * 2006-03-11 2007-09-12 Cheng-Hsiang Chen Electric hair clipper including blades with hair trapping gaps
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