US3694915A - Tiltable shear plate - Google Patents

Tiltable shear plate Download PDF

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Publication number
US3694915A
US3694915A US49130A US3694915DA US3694915A US 3694915 A US3694915 A US 3694915A US 49130 A US49130 A US 49130A US 3694915D A US3694915D A US 3694915DA US 3694915 A US3694915 A US 3694915A
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United States
Prior art keywords
shear plate
casing
circumferential edge
pivot
axis
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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.)
Expired - Lifetime
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US49130A
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English (en)
Inventor
Bernard Joseph Beusink
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Individual
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Individual
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Publication of US3694915A publication Critical patent/US3694915A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
    • B26B19/145—Cutters being movable in the cutting head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor

Definitions

  • the invention relates to a shear plate holder for a casing of a dry-shaving apparatus, which holder carries at least one shear plate; this plate is provided with hair passage apertures and co-operates with a cutting member which is resiliently maintained in engagement with the shear plate and is actuated by a driving shaft.
  • shear plate holder is known and is used in several types of dry-shaving apparatus.
  • the shear plate and the shear plate holder are not clearly distinct, because the nonperforated edge parts of the shear plates actually gradually merge in shear plate holders; i.e., the said non-perforated edge parts usually are bent over downward and connected to the casing.
  • a shear plate holder according to the invention is characterized in that the shear plate is suspended with respect to the casing by the use of at least one pivoting axis about which the shear plate is tiltable. This pivoting arrangement enables the shear plate to follow entirely the non-planar areas of the parts to be shaved so that the capture potential can be realized.
  • Dry-shaving apparatus in which the shear plates are capable of taking up inclined positions relative to the driving shafts are known. These apparatus are of the aforementioned types having shear plates adapted to be depressed between stops. Since during use at excessive pressures between the shear plate and the cutter member, unacceptable frictional heat is generated, when the shear plate is partially depressed the contact pressure between the skin and the shear plate is in principle determined by the spring pressure by which the cutter member is made to engage the shear plate.
  • the pivoting axis may be situated between the shear plate holder and the casing or between the shear plate holder and the shear plate; also an embodiment is possible in which pivoting axes may be provided both between the casing and the shear plate holder and between the shear plate holder and the shear plate.
  • shear plate holder carries two relatively spaced shear plates which each co-operates with a cutter member actuated by a driving shaft
  • the pivoting axes which are situated between the shear plate holder and the shear plates extend parallel to one another and are at right angles to the plane containing the driving shafts of the cutter members.
  • the shear plates may be inclined towards each other or away from each other, so that during the movement of the shaving apparatus over the face the shear plates can contact skin portions which may bulge between the shear plates.
  • the shear plate holder carries three relatively spaced shear plates and which is characterized in that with the use of one pivoting axis for each shear plate, the pivoting axis situated between the shear plate holder and each of the shear plates is at right angles to that plane containing the driving shaft for the cutter member co-operating with the respective shear plate which is at right angles to the plane containing the other two driving shafts.
  • pivoting axes are constituted by projecting pins with which the shear plates and the shear plate holder are provided and which are adapted to rotate in round openings formed in the shear plate holder and the casing respectively, or with which the shear plate holder and the casing are provided and which are rotatable in round openings formed in the shear plates and the shear plate holder respectively.
  • the pivoting axes can be simply realized.
  • a particularly advantageous embodiment is characterized in that for each tiltable member, a pair of intersecting pivoting axes is used which form part of a curved closed tape-shaped member which is provided with two pairs of diametrically opposite pins, one pair extending outwards and the other pair inwards with respect to the closed member.
  • the use of two pivoting axes for each tiltable member facilitates the adaptation to the shape of the part to be shaved.
  • the use of flexible pins provides the advantage that the shear plate can be resiliently held against the skin to be shaved with increased contact pressure.
  • FIGS. 1 2 and 3 are sectional views of embodiments
  • FIG. 3a is a sectional view of the embodiment shown in FIG. 3 taken on the line Illa Illa,
  • FIG. 4 is a top plan view of an embodiment of a shear plate holder which carries two shear plates
  • FIG. 4a is a top plan view similar to FIG. 4, but of an embodiment with three shear plates, and
  • FIGS. 5 and 6 are schematic elevations of embodiments of a component part.
  • a shear plate 1 gradually merges into a shear plate holder 2.
  • the non-perforated downwardly bent-over edge parts of lb of the disc-shaped shear plate 1 actually constitute the shear plate holder.
  • the shear plate holder is provided with inwardly directed pins 3 which are mounted for rotation in circular openings 4 in a casing 5, formed as a cylinder an annular ring with a longitudinal axis and an open end defining a first circumferential edge,
  • the pins 3 are spaced, colinear axle means which constitute a pivoting axis about which the shear plate holder 2 is tiltable with respect to the casing this pivoting axis being generally normal to said longitudinal axis of the casing.
  • the shear plate la and the-shear plate holder or annular ring 2a are two clearly distinct components, the shear plate holder 2a being rigidly secured to the case a.
  • the shear plate la is provided with inwardly directed pins 3a adapted to rotate in circular openings6 in the shear plate holder 2a.
  • the pins 30 constitute the pivoting axis about which the shear plate 1a is tiltable with respect to the shear plate holder 2a.
  • the same result is obtainable by providing the shear plate holder 2a with outwardly directed pins and the shear plate la with circular openings which cooperate with the pins.
  • FIGS. 3 and 3a there are two pivoting axes one between the shear flange or circumferential edge 1b" shear plate lb and the shear plate holder or annular ring 2b and one between the shear plate holder 2b and the case 5b.
  • the axes cross at an angle of substantially 90 in the embodiment shown in FIGS. 3 and 3a.
  • the shear plate holder 2b and the shear plate lb both are provided with inwardly directed pins 317, 3b respectively which co-operate with circular openings formed in the casing 5b and in the shear plate holder 2b, respectively.
  • the shear plate 1b together with the shear plate holder 2b is arranged so as to be tiltable with respect to the casing 5b, and the shear plate lb is also tiltable with respect to the shear plate holder 2b.
  • the shear plate holder or annular ring 2c is provided with two shear plates which are pivotable about parallel pivoting axes which intersect the plane containing the driving shafts (not shown) at right angles.
  • the shear plates may be inclined towards one another or away from one another.
  • the shear plate holder 2c may either be tiltable about a pivoting axis with respect to the casing or it may be rigidly secured to the casing.
  • FIG. 4a shows an embodiment in which the shear plate holder carries three mutually spaced shear plates, while the axis of rotation situated between the shear plate holder and each shear plate in respect of each shear plate is'at right angles to that plane containing the driving shaft for the cutting member co-operating with the respective shear plate which is at right angles to the plane containing the other two driving shafts.
  • FIG. 5 shows an auxiliary member 7 which is used when for each tiltable component, a pair of intersecting pivoting axes is employed.
  • the tape-shaped member 7 is in the shape of a closed curve.
  • the pivoting axes are constituted by two pairs of diametrically opposite projecting pins 8 and 9, one pair 8 being directed outwardly and the other pair 9 inwardly with respect to the member 7.
  • the pins 8 and 9 (and the pins in FIGS. l-4a) may be flexible so that with respect to the shear plate holder the shear plate can be depressed through a small distance against spring action, as can the shear plate holder with respect to the casing, if by the use of an aforedescribed pivoting axis the shear-plate holder is tiltable with respect to the case.
  • FIG. 6 shows an embodiment of the auxiliary member 7a in which the projecting pins are constituted by two pairs of lugs 10 and 11 punched out from the body of the member 7a.
  • lugs 10 and 11 can be supported by strips (not shown) which are also punched from the body of the member 7a and extend in the tape-shaped plane of the member 7a.
  • the auxiliary member 7, shown in FIGS. 5 and 6 may also be flexible, so that the tiltable component is capable of performing a move ment relative to the component part which supports the tiltable component part.
  • the pins 8 and 9 and the lugs 10 and 1 l are journalled in circular openings formed in the casing, in the shear plate holder and in the shear plate or shear plates, respectively.
  • a shear plate assembly for pivotal attachment to an open ended cylindrical part of a shaver casing, said casing including a first circumferential edge at said open end about a central longitudinal axis of said cylindrical part, the assembly comprising a shear plate and two spaced axle means for pivotally engaging said shear plate with said first circumferential edge, the axles being co-linear along a pivot axis normal to and intersecting said longitudinal axis.
  • a shear plate assembly for pivotal attachment to a shaver casing, the casing defining a first cylindrical part with an open end having an outer circumferential edge about a central longitudinal axis of this cylindrical part, the shear plate assembly comprising a disc-shaped plate part including hair-receiving apertures therein, an outer circumferential edge, and pivot means connecting the plate part as a closure to said open end of the casing, the pivot means engaging said casing and shear plate circumferential edges along a pivot axis normal to and intersecting said longitudinal axis.
  • a shear plate assembly for pivotal attachment to a shaver casing, the casing defining a first cylindrical part with a first open end having a first circumferential edge about a central longitudinal axis of the cylindrical part, an annular ring pivotally engaging said first circumferential edge about a first pivot axis that traverses both the ring and said first circumferential edge and is normal to and intersecting said central axis, the shear plate assembly comprising a disc plate including hair-receiving apertures and a cylindrical flange part defining a second circumferential edge, the second circumferential edge pivotally secured to said ring about a second pivot axis that traverses said second circumferential edge and the ring and is normal to and intersects said longitudinal axis.
  • each pivot means comprises a pivot axle and a cooperating aperture, the axle secured to one of said engaged casing and shear plate parts, and the aperture situated in the other of said parts, and the secured axle extending into said aperture.
  • Apparatus according to claim 2 further comprising at least one additional shear plate assembly which engages said casing and is spaced apart from said first shear plate assembly.
  • a shear plate assembly for attachment to a shaver casing having a central longitudinal axis comprising,
  • annular ring pivotally attached to said casing about a first pivot axis intersecting said casing axis
  • shear plate pivotally attached to said ring about a second pivot axis intersecting said casing axis and non-colinear with said first pivot axis.
  • Apparatus according to claim 9 further comprising a first axle for engaging said ring and casing about said first pivot axis, and a second axle for engaging said shear plate and ring about said second pivot axis.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US49130A 1969-06-26 1970-06-24 Tiltable shear plate Expired - Lifetime US3694915A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6909789A NL6909789A (fr) 1969-06-26 1969-06-26

Publications (1)

Publication Number Publication Date
US3694915A true US3694915A (en) 1972-10-03

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ID=19807308

Family Applications (1)

Application Number Title Priority Date Filing Date
US49130A Expired - Lifetime US3694915A (en) 1969-06-26 1970-06-24 Tiltable shear plate

Country Status (6)

Country Link
US (1) US3694915A (fr)
CA (1) CA935987A (fr)
DE (1) DE2028780A1 (fr)
FR (1) FR2051209A5 (fr)
GB (1) GB1319853A (fr)
NL (1) NL6909789A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715803A (en) * 1971-02-16 1973-02-13 T Tyler Rotary dry shaver with tiltable shear plates
US3844033A (en) * 1972-07-14 1974-10-29 Bissell Inc Rotary shaver with interlocking means to prevent shear plate rotation
US3913225A (en) * 1973-03-31 1975-10-21 Philips Corp Dry shaving apparatus with shear plate biasing means
US4001932A (en) * 1972-07-14 1977-01-11 Bissell Inc. Rotary shaver with shear plate rotation preventing means
US4038748A (en) * 1972-03-27 1977-08-02 Tyler Tracy B Rotary dry shaver with tiltable shear plates
US4077120A (en) * 1972-07-14 1978-03-07 Bissell, Inc. Dry shaver with floating peripherally supported shear plate
US4087909A (en) * 1972-07-20 1978-05-09 Sharp Kabushiki Kaisha Dry shaver
USRE30857E (en) * 1971-02-16 1982-02-02 Edwin E. Greigg Rotary dry shaver with tiltable shear plates
EP1208951A2 (fr) * 2000-11-28 2002-05-29 Izumi Products Company Rasoir électrique rotatif
US9827684B2 (en) 2014-05-07 2017-11-28 Koninklijke Philips N.V. Shaving device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952908A (en) * 1956-01-17 1960-09-20 Philips Corp Dry shaver shear plate having an axial movement in relation to a rotary cutter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952908A (en) * 1956-01-17 1960-09-20 Philips Corp Dry shaver shear plate having an axial movement in relation to a rotary cutter

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715803A (en) * 1971-02-16 1973-02-13 T Tyler Rotary dry shaver with tiltable shear plates
USRE30857E (en) * 1971-02-16 1982-02-02 Edwin E. Greigg Rotary dry shaver with tiltable shear plates
US4038748A (en) * 1972-03-27 1977-08-02 Tyler Tracy B Rotary dry shaver with tiltable shear plates
US3844033A (en) * 1972-07-14 1974-10-29 Bissell Inc Rotary shaver with interlocking means to prevent shear plate rotation
US4001932A (en) * 1972-07-14 1977-01-11 Bissell Inc. Rotary shaver with shear plate rotation preventing means
US4077120A (en) * 1972-07-14 1978-03-07 Bissell, Inc. Dry shaver with floating peripherally supported shear plate
US4087909A (en) * 1972-07-20 1978-05-09 Sharp Kabushiki Kaisha Dry shaver
US3913225A (en) * 1973-03-31 1975-10-21 Philips Corp Dry shaving apparatus with shear plate biasing means
EP1208951A2 (fr) * 2000-11-28 2002-05-29 Izumi Products Company Rasoir électrique rotatif
EP1208951A3 (fr) * 2000-11-28 2003-03-12 Izumi Products Company Rasoir électrique rotatif
US6823590B2 (en) 2000-11-28 2004-11-30 Izumi Products Company Electric rotary shaver
US9827684B2 (en) 2014-05-07 2017-11-28 Koninklijke Philips N.V. Shaving device

Also Published As

Publication number Publication date
CA935987A (en) 1973-10-30
DE2028780A1 (de) 1971-01-07
GB1319853A (en) 1973-06-13
FR2051209A5 (fr) 1971-04-02
NL6909789A (fr) 1970-12-29

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