EP3532256B1 - Single-blade razor apparatus - Google Patents
Single-blade razor apparatus Download PDFInfo
- Publication number
- EP3532256B1 EP3532256B1 EP16788402.2A EP16788402A EP3532256B1 EP 3532256 B1 EP3532256 B1 EP 3532256B1 EP 16788402 A EP16788402 A EP 16788402A EP 3532256 B1 EP3532256 B1 EP 3532256B1
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- EP
- European Patent Office
- Prior art keywords
- single blade
- head
- blade
- during use
- lower portion
- 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.)
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
- B26B21/14—Safety razors with one or more blades arranged transversely to the handle
- B26B21/16—Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge
- B26B21/165—Safety razors with one or more blades arranged transversely to the handle involving blades with only one cutting edge with the blade moulded into, or attached to, a changeable unit
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/40—Details or accessories
- B26B21/4012—Housing details, e.g. for cartridges
- B26B21/4031—Housing details, e.g. for cartridges characterised by special geometric shaving parameters, e.g. blade span or exposure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/40—Details or accessories
- B26B21/4068—Mounting devices; Manufacture of razors or cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/40—Details or accessories
- B26B21/52—Handles, e.g. tiltable, flexible
- B26B21/521—Connection details, e.g. connection to razor heads
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
Definitions
- Embodiments described herein relate to the field of shaving tools, and more particularly, to a single-blade razor and methods of manufacturing the same.
- US5416974 , US4337575 and WO95/29798 each relate to fixed-blade cartridge razor apparatus in which single blade(s) are fixed within the razor head at the time of manufacture such that a cutting edge of each blade is exposed through a side of the razor head during use.
- a razor apparatus may include a handle and a head pivotably mounted on the handle.
- the head may include a rear side including an aperture for receiving a single blade, as well as a front side through which a cutting edge of the single blade is exposed during use.
- the head may further include an upper portion and a lower portion that form the aperture. The lower portion may physically interface with the upper portion so that a front region of the upper portion is physically supported by the lower portion.
- the lower portion may include several protruding latches located in the area proximate the front side of the head.
- the protruding latches may respectively mate with a number of recesses formed in the upper portion.
- the latches may be formed in the upper portion and may respectively mate with recesses formed in the lower portion.
- An embodiment of a method of manufacturing a razor apparatus may include fabricating a lower portion and an upper portion of a head of the razor apparatus, where the lower portion and the upper portion are fabricated to physically interface with each other, when assembled, at a front region and a rear region of the head.
- the method may further include assembling the lower portion and the upper portion of the head.
- the lower and upper portions of the head When assembled, the lower and upper portions of the head may engage so that at the front region of the head, the upper portion is physically supported by the lower portion.
- the lower and upper portions of the head may form an aperture for receiving a single blade.
- the fabricating may be performed using a metal injection molding process.
- a razor apparatus may include a handle and a head pivotably mounted on the handle, where the head may include an aperture for receiving a single blade.
- the head may further include a means for retaining the single blade, where the means for retaining the single blade is configured to retain the single blade during use while permitting the single blade to move in two or more dimensions within the means for retaining the single blade during use.
- the means for retaining the single blade may include a number of retaining posts, each configured to mate with a respective recess in the single blade to retain the single blade within the head.
- the retaining posts may be spaced to retain the single blade during use while permitting the single blade to move in at least two dimensions during use.
- a method of manufacturing a razor apparatus may include fabricating a lower portion and an upper portion of a head, where the lower portion includes a number of retaining posts. The method may further include assembling the lower portion and the upper portion of the head. When assembled, the lower and upper portions of the head may form an aperture for receiving a single blade.
- Each of the retaining posts may be configured to mate with a respective recess in the single blade to retain the single blade within the head upon insertion of the single blade. Further, the retaining posts may be spaced to retain the single blade during use while permitting the single blade to move in at least two dimensions during use.
- the fabricating may be performed using a metal injection molding process.
- a "temperature circuit configured to measure an internal operating temperature of a processing element” is intended to cover, for example, an integrated circuit that has circuitry that performs this function during operation, even if the integrated circuit in question is not currently being used (e.g., a power supply is not connected to it).
- an entity described or recited as “configured to” perform some task refers to something physical, such as a device, circuit, memory storing program instructions executable to implement the task, etc. This phrase is not used herein to refer to something intangible.
- the "configured to" construct is not used herein to refer to a software construct such as an application programming interface (API).
- API application programming interface
- this term is used to describe one or more factors that affect a determination. This term does not foreclose additional factors that may affect a determination. That is, a determination may be solely based on those factors or based, at least in part, on those factors.
- a determination may be solely based on those factors or based, at least in part, on those factors.
- this term is used to describe causality of events or conditions. For example, in the phrase "B occurs in response to A,” there is a cause-and-effect relationship in which A causes B to occur. It is noted that this phrase does not entail that A is the only event that causes B to occur; B may also occur in response to other events or conditions that may be independent of or dependent on A. Moreover, this phrase does not foreclose the possibility that other events or conditions may also be required to cause B to occur. For example, in some instances, A alone may be sufficient to cause B to happen, whereas in other instances, A may be a necessary condition, but not a sufficient one (such as in the case that "B occurs in response to A and C").
- each may be used to ascribe some characteristic to all the members of that plurality or set. But absent language to the contrary, use of “each” does not foreclose the possibility that other instances of the element might not include the characteristic. For example, in the phrase "a plurality of widgets, each of which exhibits property A,” there must be at least two (and possibly arbitrarily many) widgets that exhibit property A. But without more, this does not foreclose the possibility of an additional widget, not a member of the plurality, that does not exhibit property A. In other words, absent language to the contrary, the term “each” does not refer to every possible instance of an element, but rather every element in a particular plurality or set.
- FIG. 1 an embodiment of a razor apparatus is shown.
- Razor apparatus 100 includes a handle 102 and a head 104 pivotably attached to handle 102.
- FIG. 2 illustrates a top view of head 104.
- head 104 includes a rear side 110 that includes an aperture (not labeled in FIG. 2 ) for receiving a single blade 200.
- a cutting edge 210 of blade 200 may be exposed through a front side 115 of head 104, and a rear edge 220 of blade 200 may face the rear side 110.
- Blade 200 includes blade face 250, which may include cutouts or recesses that are not employed by head 104 (e.g., recesses for mounting blade 200 in other types of razors). In some embodiments, blade 200 may be inserted so that blade face 250 faces either up or down, while in other embodiments, blade 200 may specify a particular orientation for blade face 250.
- blade 200 may have a length (denoted d1) of about 38.4 mm, and a width (denoted d2) of about 18.4 mm. All measurements stated herein are subject to ordinary manufacturing tolerances for the process used to manufacture the item in question. For example, a sampling of a particular model of blades 200 yielded d1 in the range of 38.396 mm - 38.437 mm, and d2 in the range of 18.360 mm - 18.397 mm. Additionally, blade 200 may include a number of recesses 215 which, as will be described below, may mate with retaining posts of head 104 in order to retain blade 200 within head 104 during use.
- recesses 215 are approximately semicircular in shape, and may measure about 4.0 mm (e.g., 3.985 mm - 3.998 mm) along dimension d3 and about 1.84 mm (e.g., 1.831 mm - 1.842 mm) along dimension d4.
- Recesses 215 may be located about 1.85 mm from the rear edge of blade 200 along dimension d5 (e.g., 1.827 mm - 1.873 mm).
- recesses 215 may assume shapes other than semicircular.
- different embodiments of blade 200 may employ similar shapes and dimensions for recesses 215, but may vary the location of recesses 215 within blade 200 (e.g., by varying dimension d5).
- the relative positioning of recesses 215 may affect the relative degree of exposure of cutting edge 210 upon insertion of blade 200, which may in turn alter the shaving characteristics of razor apparatus 100.
- FIG. 3 illustrates a profile view of head 104.
- head 104 includes a lower portion 120 and an upper portion 130, as well as a pivot mount 140 through which head 104 may pivotably attach to handle 102.
- Upper portion 130 further includes a pair of side walls 135 (only one of which is shown in the view of FIG. 3 ) that form exterior side faces of head 104.
- rear side 110 of head 104 faces to the left
- front side 115 faces to the right.
- the front region of upper portion 130 may effectively "float" over lower portion 120. That is, although the rear region of upper portion 130 may be attached to lower portion 120, the front region may extend over lower portion 120 without making physical contact with lower portion 120.
- upper portion 130 may retain blade 200 from above, but there may be a gap between upper portion 130 and lower portion 120. Depending on the materials used to construct head 104, such a gap may affect the structural integrity of head 104. For example, without physical support, the front region of upper portion 130 may bend or break on impact, such as if razor apparatus 100 is dropped.
- lower portion 120 is designed to physically interface with upper portion 130 so that when head 104 is assembled, the front region of upper portion 130 is physically supported by lower portion 120.
- the overall structural integrity of head 104 may be improved (e.g., with respect to impact).
- FIG. 4 illustrates an embodiment of a particular mechanism through which the front region of upper portion 130 may be physically supported by lower portion 120.
- the view of FIG. 4 is a cutaway view of FIG. 3 that shows an example of the internal structure of head 104 behind side wall 135. Specifically, FIG. 4 shows that the visible end of upper portion 130 physically rests on lower portion 120.
- lower portion 120 includes a protruding feature 145, also referred to herein as a "latch,” that mates with a corresponding recess within upper portion 130.
- FIG. 5 Further details regarding latch 145 and other elements of head 104 are shown in FIG. 5 .
- lower portion 120 and upper portion 130 are separated and partially pivoted away from the viewer in order to illustrate their interior surfaces as viewed from rear side 110 of head 104.
- lower portion 120 is shown to include latches 145 within side walls 150 at both ends, where the latches are proximate front side 115 of head 104 (e.g., closer to front side 115 than to rear side 110).
- upper portion 130 is shown to include recesses 155 within both of its side walls 135.
- latches 145 are configured to mate with recesses 155 (e.g., in a tongue-and-groove fashion) when lower portion 120 and upper portion 130 are assembled.
- Retaining posts 180 which may be configured to engage with recesses 215 of blade 200, are also shown, and will be discussed in greater detail with respect to later drawings.
- the rear regions of lower portion 120 and upper portion 130 also include mounting points 160.
- Mounting points 160 may be, for example, holes through which a screw, pin, or other type of fastener may be inserted in order to fixedly secure lower portion 120 and upper portion 130 together.
- mounting points 160 may correspond to spot welds or points of adhesion using a chemical adhesive.
- lower portion 120 may be secured to upper portion 130 along a continuous region (e.g., along a welded or adhered length) rather than at discrete points.
- latches 145 When the rear regions of lower portion 120 and upper portion 130 are secured at mounting points 160, the engagement of latches 145 with their corresponding recesses 155 may enable the front region of upper portion 130 to be securely attached to and physically supported by lower portion 120 through frictional engagement alone (e.g., without need for adhesives), although the attachment may be further enhanced with adhesives or welding if desired.
- Latches 145 may be considered a means for physically supporting upper portion 130. However, it is noted that latches 145 need not be formed in lower portion 120. In an alternative embodiment, the orientation of latches 145 and recesses 155 may be reversed, such that latches 145 are formed within upper portion 130 and recesses 155 are formed within lower portion 120. This may (but need not) include relocating side walls 135 to lower portion 120. It is also noted that many equivalents to latches 145 exist. For example, recesses 155 may correspond to grooves within side walls 135 rather than notches, and latches 145 may correspondingly be relocated within side walls 150 to mate with such grooves. Generally speaking, latches 145 may encompass any type of protrusion in one portion of head 104 that is specifically formed to mate with a corresponding recess in the other portion of head 104 in order to physically support a front region of upper portion 130.
- FIG. 6 illustrates a view of head 104 in which lower portion 120 and upper portion 130 have been assembled together, as viewed from rear side 110 of head 104. It can be seen that lower portion 120 and upper portion 130 form an aperture 185 into which blade 200 may be inserted, as mentioned above with respect to FIG. 2 .
- FIG. 6 further illustrates that retaining posts 180 protrude at least partially through upper portion 130 into aperture 185.
- the exposure of retaining posts 180 above the surface of upper portion 130 may be 0.8 mm with a manufacturing tolerance of +/- 0.05 mm
- FIG. 7 illustrates an exploded view of head 104 in profile, in order to further illustrate the elements of head 104 and their interrelationship. For clarity of presentation, not every element appearing in FIG. 5 is labeled in FIG. 7.
- FIG. 7 does call out lower support elements 190 and upper support elements 195, which will be discussed in greater detail below.
- the shaving performance of a single blade razor such as razor apparatus 100 may be characterized as a function of several mechanical parameters.
- One such characterization is schematically illustrated in FIG. 8 .
- head 104 is shown interacting with a skin surface 800.
- Blade angle 802 is defined as the angle between skin surface 800 and a plane 804 in which blade 200 resides.
- Blade gap 806 is defined as the gap between cutting edge 210 of blade 200 and lower portion 120 of head 104.
- Blade exposure 808 (shown in the inset of FIG. 8 ) is defined as the depth to which blade 200 protrudes away from lower portion 120 and into skin surface 800.
- Empirical measurements conducted using embodiments of razor apparatus 100 suggest that some combinations of the foregoing parameters may yield superior shaving performance (e.g., in terms of shave closeness, effort, comfort, and/or other characteristics) relative to others.
- One such combination includes a blade angle 802 of 31.3 degrees, a blade gap 806 of 0.65 mm, and a blade exposure 808 of 0.15 mm, although other combinations are possible and contemplated.
- skin surface 800 is rarely uniform. Its topography may vary according to factors such as anatomical features and local skin imperfections (e.g., moles, blemishes, scars, warts, and the like). Accordingly, a configuration in which the parameters described above are statically maintained-e.g., by rigidly maintaining the position of blade 200 within head 104-may not perform as well as a configuration in which blade 200 is permitted at least a small degree of movement in various dimensions within head 104 during use.
- FIG. 9 illustrates an embodiment of lower portion 120 that may be configured to permit such movement of blade 200.
- FIG. 9 illustrates a top view of the interior face of lower portion 120.
- Two retaining posts 180 are shown, as are side walls 150 and lower support elements 190. (Although latches 145 are visible in FIG. 9 , they are not necessary to this embodiment and may be omitted.)
- lower portion 120 itself may have a width (denoted d6) of 20.5 mm with a manufacturing tolerance of +/- 0.15 mm (represented as 20.5 +/- 0.15 mm), and a length (denoted d7) of 44.7 +/- 0.15 mm.
- Retaining posts 180 may have a dimension d8 of 2.0 +/- 0.05 mm and a dimension d9 of 3.95 +/- 0.05 mm.
- the spacing between retaining posts 180 (denoted d10) may be 35.0 +/- 0.15 mm
- retaining posts 180 may vary in different embodiments. It is not strictly necessary that the general shape of retaining posts 180 match that of recesses 215. That is, it may be possible to achieve the results described here with a shape of retaining posts 180 that provides fewer points of contact between retaining posts 180 and recesses 215 than the semicircular shape shown.
- FIG. 10 corresponds to the view of lower portion 120 shown in FIG. 9 with blade 200 inserted.
- recesses 215 of blade 200 mate respectively with retaining posts 180, which will retain blade 200 within head 104 during use.
- blade 200 is supported from below by lower support elements 190 and side walls 150.
- FIG. 11 which illustrates a top view of the interior face of upper portion 130
- blade 200 is also supported from above by upper support elements 195.
- the number and arrangement of blade support points within lower portion 120 and upper portion 130 may vary in various embodiments.
- the dimensions of lower support elements 190 and upper support elements 195 will vary depending on the vertical depths of lower portion 120 and upper portion 130.
- FIGs. 12-13 additional views of upper portion 130 and lower portion 120 are shown in FIGs. 12-13 , which illustrate these components from different angles.
- retaining posts 180 are slightly smaller in diameter than recesses 215 of blade 200 (e.g., d9 of about 3.95 mm for retaining posts 180 versus d3 of about 4.0 mm for recesses 215). Additionally, the effective spacing between recesses 215 is about 34.7 mm (e.g., d1 of about 38.4 mm - 2*d3 of about 1.84 mm), whereas the spacing of retaining posts 180 is slightly wider (e.g., d10 of about 35.0 mm).
- the relative dimensions and spacing of retaining posts 180 in conjunction with recesses 215 of blade 200 may permit movement of blade 200 in multiple (e.g., at least two) dimensions during use. These additional degrees of movement may enable the position of blade 200 to more readily adapt to non-uniformities in skin surface 800 than a rigidly retained blade, which may in turn improve shaving performance.
- improved performance may result when blade 200 is permitted to move along a dimension parallel to cutting edge 210 of blade 200 (e.g., dimension d1 of FIG. 2 ) in the range of 0.175 - 0.30 mm, with a possible optimum value within this range of 0.225 mm.
- blade 200 is permitted to move along a dimension perpendicular to cutting edge 210 of blade 200 (e.g., dimension d2 of FIG. 2 ) in the range of 0.20 - 0.45 mm, with a possible optimum value within this range of 0.30 mm
- blade 200 may tend to pivot around the support points presented by lower support elements 190 and upper support elements 195. That is, in addition to movement within the plane of blade 200, blade 200 may also move in a direction perpendicular to this plane (e.g., perpendicular to face 250).
- cutting edge 210 may be permitted to move along a dimension perpendicular to face 250 by 0.15 - 0.375 mm, with a possible optimum value within this range of 0.25 mm.
- rear edge 220 may be permitted to move along a dimension perpendicular to face 250 by 0.45 - 1.0 mm, with a possible optimum value within this range of 0.85 mm
- the components of razor apparatus 100 may be manufactured according to any suitable method from any suitable material.
- various elements of razor apparatus 100 e.g., lower portion 120 and upper portion 130, but possibly including all elements
- MIM metal injection molding
- a powdered metal feedstock containing a binder may be injected into a mold in a manner similar to plastic injection molding (and possibly using the same equipment).
- the binder solidifies, the resulting "green" part may be further processed in one or more steps to remove the binder and densify the metal particles, often involving sintering the part in a high-heat environment (possibly high enough to partially melt the metal).
- the finished MIM product may undergo other types of metal processing, such as plating, hardening, annealing, etc., similar to metalwork produced via machining, casting, forging or other conventional processes, and the resulting part may possess similar physical characteristics to parts produced using such conventional processes. Some machining steps may be necessary or desired before final assembly. (A typical manufacturing tolerance for a MIM may be +/- 0.5% of the length in any direction, although tighter tolerances may be achieved through process refinements or post-MIM processing steps such as machining.) However, the MIM process may enable much faster manufacturing of complex metal parts than if such parts were machined from solid metal. That said, the components of razor apparatus 100 may also be fabricated using machining from a solid metal workpiece, liquid metal casting, or any other suitable technique.
- any suitable feedstock may be employed.
- a stainless steel powder feedstock may be preferable, given that razor apparatus 100 would routinely be exposed to moisture during use.
- One possible feedstock choice would be 316L stainless steel, which may have a post-sintering composition by weight of: ⁇ 0.03% carbon, 16.0 - 18.0% chromium, 10.0 - 14.0% nickel, 2.0 - 3.0% molybdenum, ⁇ 2.0% manganese, ⁇ 1.0% silicon, balance iron.
- a substantially nickel-free stainless steel powder feedstock may be employed.
- a feedstock is BASFTM CatamoldTM PANACEA, which may have a post-sintering composition by weight of: ⁇ 0.2% carbon, 0.75 - 0.90% nitrogen, 16.5 - 17.5% chromium, ⁇ 0.1% nickel, 3.0 - 3.5% molybdenum, 10.0 - 12.0% manganese, ⁇ 1.0% silicon, balance iron.
- PANACEA heretofore unknown to the inventors in the context of manufacturing a razor apparatus, may present several advantages over other types of stainless steel.
- PANACEA may provide increased resistance to bending or breakage upon impact (e.g., in the event that razor apparatus 100 is dropped).
- the substantially nickel-free composition of PANACEA may be beneficial for those with nickel allergies. It is noted that in some embodiments, the components of head 104 may be fabricated using one type of material, whereas other components of razor apparatus 100 may be fabricated using a different material.
- FIG. 14 is a flow chart illustrating an embodiment of a method of manufacturing a razor apparatus. Operation begins in block 1400 with fabricating a lower portion and an upper portion of a head of a razor apparatus. Specifically, the lower portion and upper portion are fabricated to physically interface with each other, when assembled, at a front region and a rear region of the head.
- the method may include fabricating lower portion 120 and upper portion 130 configured as described above, according to a MIM process, machining, or any other suitable fabrication process.
- Operation continues in block 1402 with assembling the lower portion and the upper portion of the head.
- the lower and upper portions of the head engage so that at the front region of the head, the upper portion is physically supported by the lower portion, and the lower and upper portions of the head form an aperture for receiving a single blade.
- lower portion 120 and upper portion 130 may be assembled as shown in the preceding figures according to the discussion above.
- FIG. 15 is a flow chart illustrating another embodiment of a method of manufacturing a razor apparatus. Operation begins in block 1500 with fabricating a lower portion and an upper portion of a head of a razor apparatus, where the lower portion includes a number of retaining posts.
- lower portion 120 may include retaining posts 180 as described in detail above.
- this method may include fabricating lower portion 120 and upper portion 130 according to a MIM process, machining, or any other suitable fabrication process.
- each of the retaining posts is configured to mate with a respective recess in the single blade to retain the single blade within the head upon insertion of the single blade. Further, the retaining posts are spaced to retain the single blade during use while permitting the single blade to move in at least two dimensions during use. For example, lower portion 120 and upper portion 130 may be assembled to permit a small degree of movement of blade 200 as discussed above with respect to FIGs. 8-12 .
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Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2016/058696 WO2018080463A1 (en) | 2016-10-25 | 2016-10-25 | Single-blade razor apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3532256A1 EP3532256A1 (en) | 2019-09-04 |
EP3532256B1 true EP3532256B1 (en) | 2021-06-23 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16788402.2A Active EP3532256B1 (en) | 2016-10-25 | 2016-10-25 | Single-blade razor apparatus |
Country Status (8)
Country | Link |
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EP (1) | EP3532256B1 (zh) |
JP (1) | JP6900473B2 (zh) |
KR (1) | KR20190075939A (zh) |
CN (1) | CN109890583B (zh) |
CA (1) | CA3038653C (zh) |
ES (1) | ES2884302T3 (zh) |
MX (1) | MX2019004772A (zh) |
WO (1) | WO2018080463A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11389978B2 (en) * | 2014-10-06 | 2022-07-19 | OneBlade, Inc. | Razor apparatus and shaving system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112022009089B1 (pt) | 2020-10-30 | 2023-02-28 | Kai R&D Center Co., Ltd | Aparelho de barbear |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4328615A (en) * | 1979-12-31 | 1982-05-11 | Warner-Lambert Company | Razor blade assembly with movable cover cap |
US4337575A (en) * | 1980-08-07 | 1982-07-06 | The Gillette Company | Razor blade assembly |
US4574476A (en) * | 1982-09-27 | 1986-03-11 | Warner-Lambert Company | Razor blade assembly |
FR2612112A1 (fr) * | 1987-03-11 | 1988-09-16 | Knecht Roger | Rasoir a lame a coupe oblique |
US5416974A (en) * | 1990-03-27 | 1995-05-23 | The Gillette Company | Safety razors and blade units therefor |
DE9108214U1 (de) * | 1991-07-03 | 1992-10-29 | Wilkinson Sword GmbH, 5650 Solingen | Rasierapparatekopf, insbesondere Rasierklingeneinheit eines Naßrasierapparates |
ZA951655B (en) * | 1994-04-28 | 1995-12-08 | Warner Lambert Co | Dynamic flexible razor head |
CN101077425A (zh) * | 2006-05-24 | 2007-11-28 | 中国科学院金属研究所 | 一种医用无镍高氮不锈钢材料及其制备和应用 |
CN101353768B (zh) * | 2008-09-26 | 2010-09-01 | 北京科技大学 | 一种含氮无镍不锈钢及其粉末冶金成形工艺 |
CN203357477U (zh) * | 2013-07-25 | 2013-12-25 | 东莞凤岗浸校塘有成电器制品厂 | 可快速更换刀片的理发剪刀头 |
US10406704B2 (en) * | 2014-10-06 | 2019-09-10 | OneBlade, Inc. | Razor apparatus and shaving system |
-
2016
- 2016-10-25 CN CN201680090428.7A patent/CN109890583B/zh active Active
- 2016-10-25 CA CA3038653A patent/CA3038653C/en active Active
- 2016-10-25 ES ES16788402T patent/ES2884302T3/es active Active
- 2016-10-25 MX MX2019004772A patent/MX2019004772A/es unknown
- 2016-10-25 KR KR1020197012315A patent/KR20190075939A/ko not_active Application Discontinuation
- 2016-10-25 EP EP16788402.2A patent/EP3532256B1/en active Active
- 2016-10-25 WO PCT/US2016/058696 patent/WO2018080463A1/en unknown
- 2016-10-25 JP JP2019520447A patent/JP6900473B2/ja active Active
Non-Patent Citations (1)
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None * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11389978B2 (en) * | 2014-10-06 | 2022-07-19 | OneBlade, Inc. | Razor apparatus and shaving system |
Also Published As
Publication number | Publication date |
---|---|
WO2018080463A1 (en) | 2018-05-03 |
JP6900473B2 (ja) | 2021-07-07 |
CA3038653C (en) | 2024-06-18 |
CN109890583A (zh) | 2019-06-14 |
JP2019532731A (ja) | 2019-11-14 |
EP3532256A1 (en) | 2019-09-04 |
CN109890583B (zh) | 2021-10-12 |
MX2019004772A (es) | 2019-08-05 |
KR20190075939A (ko) | 2019-07-01 |
ES2884302T3 (es) | 2021-12-10 |
CA3038653A1 (en) | 2018-05-03 |
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