CN1121302C - Safety razors - Google Patents
Safety razors Download PDFInfo
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- CN1121302C CN1121302C CN96190230A CN96190230A CN1121302C CN 1121302 C CN1121302 C CN 1121302C CN 96190230 A CN96190230 A CN 96190230A CN 96190230 A CN96190230 A CN 96190230A CN 1121302 C CN1121302 C CN 1121302C
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- Prior art keywords
- blade
- cutterhead
- saddle
- lid
- geometry
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- 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
- B26B21/22—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously
- B26B21/222—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit
- B26B21/227—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit with blades being resiliently mounted in the changeable unit
Abstract
A safety razor blade unit has a guard (2), a cap (3), and three parallel blades (11, 12, 13) mounted between the guard and cap, at least one of the blades, guard and cap being movable from a non-shaving position to modify a blade exposure dimension, and to attain a modified blade geometry in which the exposure of the first blade (11) is not greater than zero and the exposure of the third blade (13) is not less than zero. At least one of the cap (2) and guard (3) can be movable against the force of a spring (20 or 21) from a non-shaving position in which all the blades between the guard and cap have their edges disposed below a plane tangential to the skin contacting surfaces of the guard and cap. The blades can be independently sprung or carried for movement in unison on a carrier pivotally mounted in a frame of the blade unit.
Description
The present invention relates to a kind of safety razor, particularly have the safety razor of the blade apparatus of a plurality of blades, these blades have and are arranged in the parallel sharp keen cutting edge that passes through in succession on the skin surface to be shaved.The present invention can be applied to its blade apparatus and be permanently secured to safety razor on the shaving razor handle, also can be applied to its blade apparatus can be installed on the handle in order to replacing the safety razor of usefulness after the blade cutting edge rust with dismantling, can be in one of two kinds of situations in conjunction with the present invention, no matter be that blade apparatus is not installed on the handle movably or is mounted to during shaving under the influence of the power that is delivered to blade apparatus and produces motion with respect to handle, for example carry out pivot type rotation around the axis that is parallel to blade cutting edge.
The present invention is specifically related to comprise the safety razor blade apparatus of three blades and the relative positioning of three blade cutting edges.We have patent application No.PCT/US94/10717 explanation earlier, use such blade apparatus, just make cutting edge be not more than zero when set blade cutting edge according to specific geometric model near the exposure height (exposed amount) of first blade of saddle, and cutting edge can obtain the performance that shaves of major tuneup when the exposure height of the 3rd blade of approaching lid is not less than zero.In the most effective geometry configuration, first blade has negative exposure height, its absolute value is 0 to 0.2mm scope, preferably equal pact-0.04mm for the cutting edge distance for its exposure height of first blade of about 0.7mm, the exposure height of the 3rd blade be not more than pact+0.3mm on the occasion of (preferably less than+0.2mm), for example about+0.06mm or+0.09mm, and the exposure height of second blade is about zero, the cutting edge of the second and the 3rd blade is 1.0 to 2.0mm apart from each, is preferably about 1.5mm.For simplicity, explanation is arranged earlier in the application and require Patent right geometry configuration to be called " the target geometry of blade " herein above-mentioned.The out of Memory of blade geometry and details can be with reference to this previous applications, and its content is with reference to being included in this.
The exposure height of blade is defined as the vertical range or the height of the blade cutting edge that arrives with respect to a plane survey, and this plane is the surperficial tangent plane that contacts skin with the blade cutting edge of a previous blade apparatus element and a back blade apparatus element.If promptly than the more approaching skin surface to be shaved of this tangential plane, exposure height is a positive number to blade cutting edge so, and is promptly farther from skin than this tangential plane if blade cutting edge is lower than this tangential plane on this plane, exposure height is a negative so.The cutting edge of blade is apart from be this blade cutting edge of measuring along a tangent line that extends distance to this skin contact element between the skin contact element of this tight front of cutting edge and this blade cutting edge.
Above-mentioned three blade geometries can be applied to the blade apparatus that blade is immovably installed with respect to saddle and lid.It also is applied to a kind of so initial or static geometry of blade apparatus, and wherein blade has been installed spring, and can be offset under the power that is applied on the blade during shaving.
The objective of the invention is to propose a kind of shaver blade apparatus, wherein some part can be moved with respect to other parts, and this point can be compatible and do not lose the advantage of blade geometry discussed above.The present invention also aims to provide a kind of comprises the cutterhead of above-mentioned blade assembly and a kind of shaver that uses above-mentioned blade assembly is provided.
According to a first aspect of the present invention, a kind of safety razor blade apparatus is provided, it comprises that a saddle, lid and order are placed in first, second and the 3rd blade with parallel sharp keen cutting edge between saddle and the lid, it is characterized in that: the one or more elements in described saddle, lid, the blade can move from the non-position of shaving, so that obtain the blade geometry of a change, wherein the exposure height of first blade is not more than zero and the exposure height of the 3rd blade is not less than zero.
According to a second aspect of the present invention, a kind of cutterhead that shaves that comprises above-mentioned blade assembly is provided, described blade is in order to install independently with respect to the spring biased motion of blade apparatus housing.
According to a third aspect of the present invention, a kind of shaver is provided, it comprises a handle, the cutterhead that can be installed on the described handle, saddle in the cutterhead front portion, lid at the cutterhead rear portion, it is characterized in that: have first of the sharp keen cutting edge that contacts with skin respectively, second, the 3rd parallel blade is installed on the described cutterhead between described saddle and lid, and in order to install independently with respect to the spring biased motion of described cutterhead, described the 3rd blade is than the more close lid of described first blade, described blade can be from moving to the position of shaving by the blade initial position of rest that exposure height determined separately, when the described first and the 3rd blade pressed down an equal amount, the power on described first blade of being applied to was less than the power that is applied on described the 3rd blade.
Can fully understand the present invention from detailed description with reference to the accompanying drawings, in the accompanying drawing:
The preferred blade geometry that Fig. 1 illustration is a kind of during shaving, it is corresponding to the Fig. 2 among the earlier application No.PCT/US94/10717;
Fig. 2 is the cross-sectional view by first embodiment of the invention under the user mode not;
The blade apparatus of Fig. 3 presentation graphs 2, its parts occupy different relative positions;
Figure 4 and 5 are the views that correspond respectively to Fig. 2 and 3, the expression second embodiment of the present invention;
Fig. 6 and 7 is the views corresponding to Fig. 2 and 3, the expression third embodiment of the present invention;
Fig. 8-10 illustration cutterhead (knife rest) is with respect to the different orientation of the application on human skin that shaves;
Figure 11 is the cross section by another embodiment, is illustrated in the spring assembly of blade and uses cantilever.
Fig. 1 schematically illustrates a safety razor blade apparatus with mounting 1, and mounting 1 forms a saddle 2 and a lid 3 and a lubricated sheet 4 is installed.On mounting, the cutting edge of three blades is arranged in common plane P by separately supporting members support for first blade 11, second blade 12 and the 3rd blade 13.The geometry of blade apparatus is as follows:
A) cutting edge of first blade 11 is apart from S
1Be 0.5 to 1.5mm, be preferably 0.7mm;
B) cutting edge of second blade 12 is apart from S
2With the cutting edge of the 3rd blade 13 apart from S
3Be 1.0 to 2.0mm, each is preferably 1.5mm;
C) from the cutting edge of the 3rd blade to lid apart from S
4Be about 1.80mm;
D) exposure height of first blade is-0.04mm;
E) exposure height of second blade 12 is not less than the exposure height of first blade 11 and is not more than the exposure height of the 3rd blade 13, as shown in FIG., and for equalling zero;
F) exposure height of the 3rd blade is pact+0.09mm.
Except other had explanation, following several embodiments of the present invention were to arrange like this, make to obtain similar basically blade geometry, though when blade apparatus static or not time spent this kind geometry do not use.
In the blade apparatus shown in Fig. 2 and 3, saddle 2 is installed on the mounting, so that slide up and down between the upper and lower end parts position that two retainers surfaces that are provided with on by mounting limit.This saddle is pushed to the position, upper end lightly by spring 20.Lid 3 can be slidably mounted on the mounting equally, so that move up and down between two end positions that limited by two retainers, and spring 21 will cover and press to its position, upper end lightly.As seen in Figure 2, in the position, upper end of saddle, on the saddle one towards last shoulder 30 near one by the retainer surface 31 that limits with the whole flange 32 that combines of mounting.Equally, in the position, upper end of lid, cover one towards last shoulder 34 near by the retainer surface 35 that limits with the whole flange 36 that combines of mounting.As shown in Figure 3, in the lower end position of saddle and lid, the retainer surface 37 and 38 that saddle and lid limit near the bottom wall portion by mounting respectively.Three blades 11,12,13 can be installed in the mounting still, maybe can be subjected to the bias voltage of spring separately facing to the retainer surface 18 by the flange limit of the inside upset on the end wall of mounting.When not being in user mode, the geometry of blade is not the target geometry of blade.The negative exposure height of first blade has remarkable absolute value greater than 0.2mm, and the 3rd blade has negative exposure height.In use this saddle and lid can be depressed and occupy position, its underpart facing to spring 20,21, and the latter acts on saddle respectively and covers.As shown in Figure 3, obtain corresponding essentially to the remodeling geometry of Fig. 1 geometry this moment.Blade can deflect down facing to its spring 19 separately from this target geometry, but the performance that shaves that improves owing to this target geometry not necessarily can be lost.In addition, in the use of blade apparatus, when saddle contacted with skin with lid, it was not crucial that saddle and lid are stayed in its lower end position, can allow them to move under the influence of separately spring 20,21.
In the embodiment of Figure 4 and 5, lid 3 and saddle 2 are fixed on the mounting as among Fig. 1, but blade can move and be subjected to the influence of spring 24 separately in this case.Spring can upwards compress blade (described in relevant Fig. 2 and Fig. 3) lightly facing to the retainer surface, but as shown in the figure, when blade apparatus static and not the time spent spring do not have strain, so on blade, do not preload.Under this state of blade apparatus, the target geometry of blade is not met, and for example, because first blade has positive exposure height, and the exposure height of the 3rd blade is greater than the preferred maximum of+0.2mm.But in use, blade is by facing under the spring force pressure, thereby the geometry that obtains retrofiting, and as shown in Figure 5, and can obtain the target geometry of Fig. 1 basically.If desired, blade can be installed retainer, so that pre-determine the position that they must deflect in order to reach the target geometry.Perhaps, can select spring rate, making can be inundue from the skew according to the position of target geometry.
Fig. 6 and 7 embodiment also have static saddle 2 and lid 3.Three blades 11,12,13 are installed in (for example by a cartridge housing) on the pendulous device 26 that is bearing in the mounting 1, so that make blade carry out pivotal movement around the pivotal axis A that is positioned at the blade cutting edge top harmoniously.The sheet spring 28 that carries on the mounting acts on the pendulous device, pushes it to shown in Fig. 6 the non-position of shaving slightly, is not in its target geometry at this position cutter, and first blade has positive exposure height and the 3rd blade has negative exposure height.In use, the power that applies will make pendulous device 26 be used as pivot type rotation and get the position shown in Fig. 7 facing to the work of spring 28, this position can utilize the retainer that is fixed on the mounting, and retainer 40 or retainer 41 as schematically illustrating among the figure pre-determine.Under this state of blade apparatus, geometry as in conjunction with the above-mentioned explanation that Fig. 1 did, therefore provides the target geometry of blade basically.As shown in the figure, blade is fixedly mounted on the pendulous device, but blade also can utilize and be installed on the pendulous device, makes that blade can be from the deflection of target geometry, as top narration in conjunction with Fig. 2 and 3 during shaving.
Though being appreciated that these embodiment begin to satisfy obtains the shave geometrical structure parameter of performance of the best, all these embodiment are suitable in use obtaining these geometrical structure parameters.Though some embodiment have been described, have been appreciated that other embodiment also is possible in the scope of claims.For example, saddle and the lid in only one can move, perhaps cutter and saddle and/or the lid can move, perhaps only one or two blade can move.Other assembly of movable member also is fine.In addition, parts can be suitable for moving by different way, for example by being arranged to saddle flexible or tilting and/or motion, with cutting edge distance that changes first blade and the exposure height that changes blade.
Be that when time spent not, blade cutting edge all is placed in a below with the surperficial tangent plane that contacts skin of saddle and lid as the saddle that can move and bounce among the embodiment of Fig. 2 and 3 and/or characteristics of lid.But saddle and/or lid can easily move to the retracted position that is limited by retainer, thereby obtain desired blade geometry.
Can believe, can obtain the favourable effect that shaves when presenting " progressive force " (incremental force) model (pattern) during the cutterhead with blade that three elasticity install is shaving, should " progressive force " model be exactly that the power on second blade is the median of the power on the first and the 3rd blade or equals power on the 3rd or first blade greater than the power on first blade for power on the 3rd blade.The model of the power on the blade can be subjected to the influence of cutterhead orientation bias voltage effect, blade geometry and the configuration of blade spring, as discussed in more detail below.
How cutterhead orientation bias voltage effect influences power on each blade with respect to the angular orientation of skin surface if relating to cutterhead.Three kinds of cutterheads of Fig. 8-10 illustration orientation, a kind of neutral orientation, the orientation that a kind of lid increases the weight of, and the orientation that increases the weight of of a kind of saddle.In these figure, schematically illustration cutterhead 130 comprises saddle 132, lid 134 and blade 136,138,140, and is shown in before skin surface is offset cutterhead with respect to the orientation of skin surface 142.During actual shaving, cutterhead is pushed into skin surface usually and makes its skew, so the entire top of cutterhead will contact skin.If the supposition exposure height is in desired positions (the non-state that shaves), spring preloads with spring rate each blade is all equated, the model of the power during the cutterhead orientation shaves control so on the blade.
In Fig. 8, cutterhead 130 be oriented to the neutral position.In this case, because the end user is pressed to skin surface 142 with cutterhead 130 all blades are brought in the contact of shaving, power is applied on three blades equably.In order to produce the progressive force model, can change the spring configuration of the geometric configuration and/or the blade of blade, these go through below.
In Fig. 9, cutterhead 140 has the orientation that lid increases the weight of.In this case, lid 132 contacts skin surface at first.When the remainder at cutterhead top was pushed to skin, bigger power was applied near on the blade that covers.Therefore, the power on the 3rd blade of applying is greater than the power that is applied on second blade, and a back power is greater than the power that is applied on first blade, and this is the model of a progressive force.
In Figure 10, cutterhead 130 has the orientation that saddle increases the weight of.In this case, saddle 134 contacts skin surface at first.When the remainder at cutterhead top was pushed to skin, bigger power was applied near on the blade of saddle.Therefore, the power on first blade of being applied to is greater than the power that is applied on second blade, and a back power is greater than the power that is applied on the 3rd blade.Therefore the state that increases the weight of of saddle promotes the reverse side of " progressive force ".In order to produce the progressive force model, can change the configuration of blade geometry and/or blade spring, to offset otherwise the model of the power that state was produced that can be increased the weight of by saddle, these are discussed below.
For being not the cutterhead that is connected to pivotally on the handle, cutterhead is with respect to the orientation of skin and the orientation of cutterhead thus bias voltage effect, usually by the orientation decision of cutterhead with respect to handle.For the cutterhead that is pivotally connected on the handle by, beyond the static orientation of cutterhead, pivot position and back-moving spring power will influence cutterhead orientation bias voltage effect.For example, if static cutterhead orientation as shown in Figure 9, lid will contact skin at first; But, if pivot in the saddle zone, and back-moving spring power is little, cutterhead will become the state that saddle increases the weight of during shaving so.
As mentioned above, the model of the power on the blade also is subjected to the influence of blade geometrical construction and the configuration of blade spring.The blade geometrical construction refers to the exposure height when static.The blade spring disposes thrum spring rigidity and preloads.
Figure 11 is illustrated as blade provides elasticity to install and how to adjust a kind of method of the static exposure height of blade.(also can use other spring installation method).Referring to Figure 11, cantilever plastic arm 144 stretches into and provides elastic bearing for the curved upper 146 of blade one end from housing sidewall 146.The cutting cutting edge 150 of blade is prevented from further to move upward by the metal clip 152 that is fixed on the housing.Similar arm from the opposite side of cutterhead stretch into and under similar parking lamp the other end for blade elastic bearing is provided.A pair of arm 144 is corresponding to the spring shown in Fig. 2-5 19,24.That plays upward force F that the arm 144 of cantilever beam effect applies and be it on blade section 148 is not subjected to the linear function of the downward displacement Y in the position of bias voltage: F=K * Y from it, K is a spring constant in the formula, and it depends on the length L of arm, the moment of inertia I and the elastic modulus E (K=L of arm
3/ (3EI)).If arm 144 is by distance Y of folder 152 skews in the mill
p(pre-load force F is provided promptly for arm 144
pBe K * Y
p), Y equals Y in formula so
p+ Y
D ', Y wherein
dEqual from downward the moving of the resting position shown in Figure 11.
Power on the blade can be controlled in every way, so that produce the progressive force model during shaving.For example, can make arm 144 have different spring constants by length or the inertia motion (for example by providing thicker cross section) that changes arm 144 for arm 144.Also can make arm 144 have different pre-load force F
p, method is the arm cross section that keeps identical and length but makes arm 144 be connected to position on the housing sidewall 146 to move up (to increase pre-load force) or move down (to reduce pre-load force).Also can adjust the position or the shape of clip 152 with respect to arm, to adjust pre-load force F
pFor example, clip 152 can be installed like this, make the part of a blade of contact be below or above the part of the different blades of contact.
A kind of method that obtains the progressive force model during shaving is to make all blades have initial progressive exposure height and same pre-load force and spring constant.The another kind of method that obtains the progressive force model during shaving is to have same initial exposure height (as all being zero) and have progressive preloading.A kind of the progressive method that preloads is provided is to make the spring constant of the 3rd blade be higher than the spring constant of second blade, and makes the spring constant of the spring constant of first blade less than second blade.Obtain the progressive another kind of method that preloads and be all blades are used same arm (being same spring constant), but make second arm install to such an extent that be higher than first blade and the 3rd arm is installed to such an extent that be higher than second arm.
Spring, preload with the initial exposure height and can be orientated the bias voltage combination of effects and produce progressive exposure height and/or progressive force model with cutterhead.For example, if cutterhead (for example has orientation that saddle increases the weight of, as mentioned above, lid first orientation but have a near pivot and the light back-moving spring saddle), so in use can utilize highlyer on the 3rd and second blade than on first blade preload, spring constant and static exposure height realize progressive geometry.Can during shaving, be used to promote other combination of progressive force to be included in highlyer on the 3rd blade than on first blade to preload, spring constant or static exposure height, or being combined on the 3rd blade to compare and having higher value of these parameters with first blade.Best second blade has median or the value identical with the 3rd blade, to promote the progressive force model.
Spring preloads and is usually located in about 25g or the littler scope.Power on each blade is wished in the scope of about 0-40g, is between the 0-20g on first blade, on the 3rd blade for greater than zero less than 40g.Power on each blade is usually greater than 5g.Static exposure height and shave during exposure height be usually located in the above-mentioned scope.
Claims (36)
1. safety razor blade apparatus, it comprises that a saddle (2), a lid (3) and order are placed in first, second and the 3rd blade (11 with parallel sharp keen cutting edge between saddle and the lid, 12,13), it is characterized in that: the one or more elements in described saddle, lid, the blade can move from the non-position of shaving, so that obtain the blade geometry of a change, wherein the exposure height of first blade (11) is not more than zero and the exposure height of the 3rd blade (13) is not less than zero.
2. blade apparatus as claimed in claim 1 is characterized in that: described one or more displaceable elements can move to by stop mechanism or be applied to the position that the spring pressure on the described element limits from the non-position of shaving.
3. blade apparatus as claimed in claim 1 or 2 is characterized in that: be provided with a movably saddle (2).
4. blade apparatus as claimed in claim 1 or 2 is characterized in that: be provided with a movably lid (3).
5. blade apparatus as claimed in claim 1 or 2 is characterized in that: be provided with one or more movably blades (11,12,13).
6. blade apparatus as claimed in claim 1 or 2 is characterized in that: be provided with the blade that can move independently from one another.
7. blade apparatus as claimed in claim 5 is characterized in that: be provided with the blade that can move independently from one another.
8. blade apparatus as claimed in claim 5 is characterized in that: described blade is carried by parts (26) that are mounted for pivotal movement.
9. blade apparatus as claimed in claim 8 is characterized in that: described pivot props up parts (26) can make pivotal movement around the axis (A) that is positioned at the blade cutting edge top.
10. blade apparatus as claimed in claim 1 is characterized in that: in the geometry of described change, first blade has the negative exposure height of 0 to 0.2mm scope.
11. blade apparatus as claimed in claim 1 is characterized in that: in the geometry of described change, the exposure height of the 3rd blade (13) has one and is not more than+0.3mm on the occasion of.
12. blade apparatus as claimed in claim 1 is characterized in that: in the geometry of described change, the exposure height of second blade (12) is not less than the exposure height of first blade (11) and is not more than the exposure height of the 3rd blade (13).
13. blade apparatus as claimed in claim 12 is characterized in that: the exposure height of second blade (12) equals zero substantially.
14. blade apparatus as claimed in claim 1 is characterized in that: in the geometry of described change, the negative value on the occasion of the exposure height that quantitatively equals first blade (11) of the exposure height of the 3rd blade (13).
15. blade apparatus as claimed in claim 1 is characterized in that: in the geometry of described change, the distance range between the cutting edge of first blade (11) and the saddle (2) is 0.5mm to 1.5mm.
16. blade apparatus as claimed in claim 1, it is characterized in that: in the geometry of described change, distance between the cutting edge of the cutting edge of the 3rd blade (13) and second blade (12), and the distance between the cutting edge of the cutting edge of second blade (12) and first blade (11) is in 1.0 to 2.0mm scope.
17. blade apparatus as claimed in claim 1, it is characterized in that: in the geometry of described change, distance between the cutting edge of first blade (11) and the saddle (2) is basically less than first and second blades (11, distance between the cutting edge of distance between the cutting edge 12) and the second and the 3rd blade (12,13).
18. blade apparatus as claimed in claim 1 is characterized in that: in the geometry of described change, the distance between the cutting edge of first blade (11) and the saddle (2) is substantially equal to 0.7mm.
19. blade apparatus as claimed in claim 1 is characterized in that: on the described non-position of shaving, blade cutting edge is positioned at the plane below tangent with the skin contact surface of saddle and lid.
20. blade apparatus as claimed in claim 1, it is characterized in that: described the 3rd blade more approaches lid than described first blade, at least one element of selecting from three blade saddles and lid can be in response to user's shaver blade apparatus and quilt are shaved action that skin contacts, moved to a depressed position that begins to shave by institute's externally applied forces from position of rest, thereby the blade that changes blade apparatus exposes size, on described depressed position, obtain a target geometry, in the target geometry, the expose portion of first blade is less than zero, and the exposure height of the 3rd blade is greater than zero, first with the 3rd blade at least one described at least one have different exposure heights when movably element is in position of rest, when the described first and the 3rd blade is pressed down an equal amount, the power on described first blade of acting on is less than the power that acts on described the 3rd blade, removing during externally applied forces, described spring bias voltage makes described at least one element be biased to position of rest, described three blades are installed independently to carry out spring biased motion, in the process of shaving, making blade is translation and do not change separately blade angle from separately the position of shaving mobile.
21. blade apparatus as claimed in claim 1, it is characterized in that: at least one in saddle and the lid can make the action that skin contacts of shaving of shaver blade apparatus and quilt in response to the user, move to a predetermined depressed position of working from a position of rest that is unloaded by institute's externally applied forces, but before beginning to shave, be basically parallel to described skin, on described depressed position, can obtain a target blade geometry, described three blades are installed for the spring bias voltage moves independently, making blade is translation and do not change separately blade angle from separately operating position mobile, when the described first and the 3rd blade is pressed down an equal amount, the power on described first blade of being applied to is less than the power that is applied on described the 3rd blade, on described position of rest, blade cutting edge be arranged on saddle and lid contact below, the tangent plane of skin surface.
22. the cutterhead that shaves, it comprises the described blade assembly of arbitrary as described above claim, it is characterized in that: described blade (11,12,13) is in order to install independently with respect to the spring biased motion of blade apparatus housing.
23. the cutterhead that shaves as claimed in claim 22 is characterized in that: the 3rd blade (13), perhaps the second and the 3rd blade (1 2,13) has higher spring constant than first blade.
24. the cutterhead that shaves as claimed in claim 22 is characterized in that: the 3rd blade (13), perhaps the second and the 3rd blade (12,13) has higher spring than first blade (11) and preloads.
25. the cutterhead that shaves as claimed in claim 22 is characterized in that: on the position of shaving, the power on first blade (11) is less than or equal to the power on second blade (12), and the power on second blade (12) is less than or equal to the power on the 3rd blade (13).
26. the cutterhead that shaves as claimed in claim 25 is characterized in that: the power on first blade (11) is between zero-sum 20g, and the power on the 3rd blade (13) is greater than zero and less than 40g.
27. the cutterhead that shaves as claimed in claim 22 is characterized in that: described housing is pivoted.
28. the cutterhead that shaves as claimed in claim 22 is characterized in that: described blade apparatus is that saddle increases the weight of, or lid increases the weight of.
29. the cutterhead that shaves as claimed in claim 22, it is characterized in that: saddle, lid and first, second, the 3rd blade is packed in the described housing, described housing has and is suitable for the syndeton that detachable is connected in one handle, described first, second, the 3rd parallel blade is in order to install independently with respect to the spring biased motion of described housing, described the 3rd blade is than the more close lid of described first blade, described blade can move to the position of shaving from the blade initial position of rest that exposure height determined separately, described the 3rd blade has higher preloading than described first blade, thereby when the described first and the 3rd blade was pressed down an equal amount, the power on first blade of acting on was less than the power that acts on the 3rd blade.
30. the cutterhead that shaves as claimed in claim 29 is characterized in that: it is translation and do not change separately blade angle from separately the position of shaving mobile that described three blades are mounted in the process of shaving blade.
31. the cutterhead that shaves as claimed in claim 22, it is characterized in that: described saddle, lid and blade are contained in the described housing, described housing has the syndeton that is suitable for being connected in one handle, described blade is in order to install independently with respect to the spring biased motion of described housing, described the 3rd blade is than the more close lid of described first blade, described blade can be in response to the user at saddle, the lid with the state of three insert supportings on skin to be shaved in make the shaver blade apparatus contact the action of the skin that is shaved, from being moved to the depressed position that begins to shave by the position of rest of applying external force unloading, wherein obtain a target blade geometry, in this target blade geometry, the exposure height of first blade is less than zero, the exposure height of the 3rd blade is greater than zero, three blades are mounted to and make blade not change separately blade angle from moving to translation of separately the position of shaving in the process of shaving, when the described first and the 3rd blade pressed down an equal amount, the power on first blade of acting on was less than the power that acts on the 3rd blade.
32. shaver, it comprises a handle, the cutterhead that can be installed on the described handle, saddle in the cutterhead front portion, lid at the cutterhead rear portion, it is characterized in that: have first of the sharp keen cutting edge that contacts with skin respectively, second, the 3rd parallel blade is installed on the described cutterhead between described saddle and lid, and in order to install independently with respect to the spring biased motion of described cutterhead, described the 3rd blade is than the more close lid of described first blade, described blade can be from moving to the position of shaving by the blade initial position of rest that exposure height determined separately, when the described first and the 3rd blade pressed down an equal amount, the power on described first blade of being applied to was less than the power that is applied on described the 3rd blade.
33. shaver as claimed in claim 32 is characterized in that: described cutterhead has the syndeton that is suitable for being connected in removably described handle.
34. shaver as claimed in claim 32 is characterized in that: described cutterhead is connected in described handle.
35. as each described shaver in the claim 32 to 34, it is characterized in that: the 3rd blade has higher preloading than first blade.
36. as the described shaver of claim 32 to 34, it is characterized in that: described blade is mounted in the process of shaving, blade is translation and do not change separately blade angle from separately the position of shaving mobile.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9505917.6A GB9505917D0 (en) | 1995-03-23 | 1995-03-23 | Safety razors |
| GB9505917.6 | 1995-03-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1149851A CN1149851A (en) | 1997-05-14 |
| CN1121302C true CN1121302C (en) | 2003-09-17 |
Family
ID=10771747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96190230A Expired - Lifetime CN1121302C (en) | 1995-03-23 | 1996-03-21 | Safety razors |
Country Status (26)
| Country | Link |
|---|---|
| EP (1) | EP0760734B2 (en) |
| JP (2) | JP3961020B2 (en) |
| CN (1) | CN1121302C (en) |
| AT (1) | ATE198438T1 (en) |
| AU (1) | AU708312B2 (en) |
| BR (1) | BR9605889A (en) |
| CA (1) | CA2190269C (en) |
| CO (1) | CO4520116A1 (en) |
| CZ (1) | CZ290222B6 (en) |
| DE (1) | DE69611406T3 (en) |
| ES (1) | ES2153100T5 (en) |
| GB (1) | GB9505917D0 (en) |
| GR (1) | GR3035693T3 (en) |
| HK (1) | HK1009413A1 (en) |
| HU (1) | HU218468B (en) |
| MY (1) | MY118327A (en) |
| NZ (1) | NZ305619A (en) |
| PL (1) | PL180793B1 (en) |
| PT (1) | PT760734E (en) |
| RO (1) | RO121633B1 (en) |
| RU (1) | RU2160181C2 (en) |
| SK (1) | SK283788B6 (en) |
| TR (1) | TR199600887T1 (en) |
| TW (1) | TW307708B (en) |
| UA (1) | UA47406C2 (en) |
| WO (1) | WO1996029183A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012006793A1 (en) * | 2010-07-12 | 2012-01-19 | Ren Xiangrong | Shaver head |
| CN102548717A (en) * | 2009-10-05 | 2012-07-04 | 皇家飞利浦电子股份有限公司 | Shaving device having a safe razor blade unit |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6112412A (en) * | 1999-04-21 | 2000-09-05 | Warner-Lambert Company | Razor assembly and cartridge having improved wash-through |
| US6772523B1 (en) | 1999-04-21 | 2004-08-10 | Eveready Battery Company, Inc. | Pivotable and flexible razor assembly and cartridge |
| US6138361A (en) * | 1999-04-21 | 2000-10-31 | Warner-Lambert Company | Pivotable razor assembly and cartridge |
| US6182366B1 (en) | 1999-04-21 | 2001-02-06 | Warner-Lambert Company | Flexible razor assembly and cartridge |
| GB2354474B8 (en) * | 1999-09-27 | 2008-01-29 | Gillette Co | Safety razors |
| US7152512B1 (en) | 2002-04-18 | 2006-12-26 | American Safety Razor | Razor handle with spring fingers |
| US7621203B2 (en) | 2004-02-09 | 2009-11-24 | The Gillette Company | Shaving razors, and blade subassemblies therefor and methods of manufacture |
| JP4921747B2 (en) | 2005-09-09 | 2012-04-25 | 株式会社貝印刃物開発センター | razor |
| JP4950506B2 (en) | 2006-02-14 | 2012-06-13 | 株式会社貝印刃物開発センター | razor |
| JP4950507B2 (en) | 2006-02-14 | 2012-06-13 | 株式会社貝印刃物開発センター | razor |
| JP4977374B2 (en) * | 2006-02-14 | 2012-07-18 | 株式会社貝印刃物開発センター | razor |
| US7448135B2 (en) * | 2006-03-29 | 2008-11-11 | The Gillette Company | Multi-blade razors |
| BRPI0621787B1 (en) | 2006-06-20 | 2019-05-07 | Bic-Violex Sa | SAFETY BLADE UNIT HEAD AND HEAD INCLUDING SUCH BLADE UNIT |
| KR100749925B1 (en) | 2006-06-29 | 2007-08-16 | 주식회사 도루코 | Razor |
| EP2366507B1 (en) | 2010-03-15 | 2015-05-13 | The Gillette Company | Razor cartridge |
| PL2537648T3 (en) * | 2011-06-20 | 2017-01-31 | The Gillette Company | Razor cartridge with skin contact element |
| EP2537649B1 (en) * | 2011-06-21 | 2013-07-17 | The Gillette Company | Razor cartridge with skin contact element |
| KR101999555B1 (en) * | 2012-12-21 | 2019-07-12 | 빅-비올렉스 에스아 | Shaver with interchangeable cartridge, cartridge and head and handle assembly for such shaver |
| US20150101195A1 (en) * | 2013-10-11 | 2015-04-16 | The Gillette Company | Shaving cartridges having lubrication members |
| EP3292964B1 (en) * | 2016-09-09 | 2020-04-15 | The Gillette Company LLC | Shaving razor cartridge |
| US11541560B2 (en) * | 2018-03-01 | 2023-01-03 | Rolling Razor, Inc. | Precision razor with low cost assembly |
| KR102063770B1 (en) * | 2018-07-27 | 2020-01-08 | 주식회사 도루코 | Razor cartridge |
| CN114340857B (en) * | 2020-04-03 | 2023-05-09 | 温州美葆科技技术有限公司 | Razor head |
| CN114505894A (en) * | 2022-02-21 | 2022-05-17 | 宁波佳利塑胶有限公司 | Comfortable shaver |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4168571A (en) * | 1977-02-02 | 1979-09-25 | The Gillette Company | Shaving unit |
| US4854042A (en) * | 1986-07-14 | 1989-08-08 | Byrne John J | Diagonal blade cartridge |
| CN1132485A (en) * | 1993-09-29 | 1996-10-02 | 吉莱特公司 | Safety razors |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3660893A (en) † | 1969-03-26 | 1972-05-09 | Norman C Welsh | Replaceable blade unit for a safety razor |
| US3786563A (en) † | 1971-08-31 | 1974-01-22 | Gillette Co | Shaving system |
| GB1531003A (en) † | 1975-05-29 | 1978-11-01 | Gillette Co | Shaving units |
| GB2113594B (en) † | 1982-01-27 | 1985-09-18 | Wilkinson Sword Ltd | A razor blade assembley |
| DE3303095A1 (en) * | 1982-02-10 | 1983-08-25 | Feather Safety Razor Co., Ltd., Osaka | SAFETY SHAVER |
| GB2118088B (en) † | 1982-04-03 | 1985-10-02 | Wilkinson Sword Ltd | Razors and shaving units for razors |
| SE442718B (en) † | 1983-10-05 | 1986-01-27 | Warner Lambert Co | RADIATOR COVER WITH AN INTEGRATED MANOVERDON |
| JPS612887A (en) * | 1984-06-15 | 1986-01-08 | フエザ−安全剃刀株式会社 | Razor guide structure in double-blade safety razor |
| GB9006782D0 (en) * | 1990-03-27 | 1990-05-23 | Gillette Co | Safety razors and blade units therefor |
| GB9106860D0 (en) * | 1991-04-02 | 1991-05-22 | Gillette Co | Safety razor |
| DE9108214U1 (en) † | 1991-07-03 | 1992-10-29 | Wilkinson Sword Gmbh, 5650 Solingen, De | |
| GB2295982B (en) † | 1994-12-16 | 1998-03-18 | Zulfiqar Akberali Husain | Disposable razor with movable blades |
-
1995
- 1995-03-23 GB GBGB9505917.6A patent/GB9505917D0/en active Pending
-
1996
- 1996-03-21 NZ NZ305619A patent/NZ305619A/en not_active IP Right Cessation
- 1996-03-21 AU AU53663/96A patent/AU708312B2/en not_active Ceased
- 1996-03-21 HU HU9603239A patent/HU218468B/en not_active IP Right Cessation
- 1996-03-21 RU RU96124082/12A patent/RU2160181C2/en not_active IP Right Cessation
- 1996-03-21 CO CO96014129A patent/CO4520116A1/en unknown
- 1996-03-21 UA UA96124772A patent/UA47406C2/en unknown
- 1996-03-21 SK SK1448-96A patent/SK283788B6/en not_active IP Right Cessation
- 1996-03-21 CZ CZ19963415A patent/CZ290222B6/en not_active IP Right Cessation
- 1996-03-21 BR BR9605889A patent/BR9605889A/en not_active IP Right Cessation
- 1996-03-21 AT AT96910481T patent/ATE198438T1/en not_active IP Right Cessation
- 1996-03-21 CA CA002190269A patent/CA2190269C/en not_active Expired - Fee Related
- 1996-03-21 PL PL96317327A patent/PL180793B1/en not_active IP Right Cessation
- 1996-03-21 JP JP52857596A patent/JP3961020B2/en not_active Expired - Lifetime
- 1996-03-21 PT PT96910481T patent/PT760734E/en unknown
- 1996-03-21 ES ES96910481T patent/ES2153100T5/en not_active Expired - Lifetime
- 1996-03-21 TR TR96/00887T patent/TR199600887T1/en unknown
- 1996-03-21 CN CN96190230A patent/CN1121302C/en not_active Expired - Lifetime
- 1996-03-21 WO PCT/US1996/003758 patent/WO1996029183A1/en active IP Right Grant
- 1996-03-21 DE DE69611406T patent/DE69611406T3/en not_active Expired - Lifetime
- 1996-03-21 RO RO96-02176A patent/RO121633B1/en unknown
- 1996-03-21 EP EP96910481A patent/EP0760734B2/en not_active Expired - Lifetime
- 1996-03-22 MY MYPI96001088A patent/MY118327A/en unknown
- 1996-04-24 TW TW085104877A patent/TW307708B/zh active
-
1998
- 1998-09-03 HK HK98110418A patent/HK1009413A1/en not_active IP Right Cessation
-
2001
- 2001-04-02 GR GR20010400542T patent/GR3035693T3/en unknown
-
2006
- 2006-12-27 JP JP2006353131A patent/JP2007083084A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4168571A (en) * | 1977-02-02 | 1979-09-25 | The Gillette Company | Shaving unit |
| US4854042A (en) * | 1986-07-14 | 1989-08-08 | Byrne John J | Diagonal blade cartridge |
| CN1132485A (en) * | 1993-09-29 | 1996-10-02 | 吉莱特公司 | Safety razors |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102548717A (en) * | 2009-10-05 | 2012-07-04 | 皇家飞利浦电子股份有限公司 | Shaving device having a safe razor blade unit |
| CN102548717B (en) * | 2009-10-05 | 2016-04-13 | 皇家飞利浦电子股份有限公司 | There is the shaving equipment of safe razor blade unit |
| WO2012006793A1 (en) * | 2010-07-12 | 2012-01-19 | Ren Xiangrong | Shaver head |
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