US3815232A - Shear foil for a dry shaver - Google Patents

Shear foil for a dry shaver Download PDF

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Publication number
US3815232A
US3815232A US00330928A US33092873A US3815232A US 3815232 A US3815232 A US 3815232A US 00330928 A US00330928 A US 00330928A US 33092873 A US33092873 A US 33092873A US 3815232 A US3815232 A US 3815232A
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United States
Prior art keywords
shear
element carrier
moving direction
cutter element
holes
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Expired - Lifetime
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US00330928A
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English (en)
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E Liska
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PAYER LUX
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PAYER LUX
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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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/384—Dry-shaver foils; Manufacture thereof

Definitions

  • ABSTRACT The invention relates to a shear foil for a dry shaver in Feb. 10. 1972 Austria 1070/72 which, for stiffening of the shear foil, the opening ratio of the shear holes arranged in one main area gradually [52] [1.8. CI. 30/346.5l, 30/346.61 decreases as compared to the opening ratio of the [51] Int. Cl B26b 19/04 shear holes arranged in one of the border areas.
  • the invention relates to a shear foil for a dry shaver.
  • the stiffening of the border zone is effected solely by placing singly or staggering circular shear holes of equal size. It is further known in shear foils to stiffen the more heavily stressed border zones by gradually reducing the diameter of the circular shear holes towards the edge of the shear foil under retention of the screen size of the main area.
  • a shear foil for a dry shaver with at least one shear head provided with a cutter element carrier movable under the shear foil comprises shear holes distributed in at least one part of the shear foil that part forming the shear head having one main area and at least one border area, the measurement of the shear holes in at least one border area taken transversely to the moving direction of the cutter element carrier, for stiffening the shear foil, being kept equal as compared to the corresponding measurement of the shear holes in the main area and merely the measurement of the shear holes in the border area taken in the moving direction of the cutter element carrier being progressively decreased towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • a shear foil for a dry shaver with at least one shear head is provided with a cutter element carrier movable under the shear foil comprising shear holes distributed in at least one part of the shear foil that part forming the shear head having one main area and at least one border area, the measurement of the shear holes in at least one border area taken transversely to the moving direction of the cutter element carrier, for stiffening the shear foil, being increased towards the edge of the border area positioned in the moving cirection of the cutter element carrier and removed from the main area, and merely the messurement of the shear holes in the border area taken in the moving direction of the cutter element carrier being progressively decreased, as compared to the corresponding measurement of the shear holes in the main area, towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • a further shear foil for a dry shaver is a shear foil with two shear heads combined to one double shear head, said double shear head being formed of one single shear foil provided with shear holes and at least one cutter element carrier movable under the shear foil arranged underneath it, comprising the shear foil having one main area and at least one border area adjacent the main area for each shear head, the shear holes being distributed in those areas, the measurement of the shear holes in at least one border area taken transversely to the moving direction of the cutter element carrier, for stiffening the shear foil, being kept equal as compared to the corresponding measurement of the shear holes in the main area and merely the measurement of the shear holes in the border area taken in the moving direction of the cutter element carrier being progressively decreased towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • a further shear foil for a dry shaver is a shear foil with two shear heads combined to one double shear head, said double shear head being formed of one single shear foil provided with shear holes and at least one cutter element carrier movable under the shear foil arranged underneath it, comprising the shear foil having one main area and at least one border area adjacent the main area for each shear head, the shear holes being distributed in those areas, the measurement of the shear holes in at least one border area taken transversely to the moving direction of the cutter element carrier, for stififening the shear foil, being increased towards the edge of the border area positioned in the moving direction of the cutter-element carrier and removed from the main area and merely the measurement of the shear holes in the border are taken in the moving direction of the cutter element carrier being progressively decreased towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • the invention is based on the finding that the shear capacity in a hole area depends mainly upon the total length of the edge sections of the shear holes which are positioned transversely to the moving direction of the cutter element carrier and that, as a result, very good stiffening at very good shaving capacity can be achieved if only in the border area the size of the shear holes positioned in the moving direction of the cutter element carrier is gradually decreased towards the edge of the shear foil, while the size of the holes transversely to the moving direction of the cutter element carrier is retained equal or even increased towards the edge of the shear foil. In this way, the total length of the effective shearing edges is essentially retained or even increased, while very good stiffening is achieved.
  • shear holes are distributed according to a determined screen definition in at least one main area.
  • the length of the shear holes in the border area increases as compared to the length of the shear holes in the main area, it is of advantage if the length of the slit-shaped shear holes in the border area axceeds the corresponding measurement of the shear holes in the main area taken transversely to the moving direction of the cutter element carrier by up to about 30 percent.
  • FIG. 1 is a view of a shear foil for a dry shaver partially in cross section
  • FIG. 2 a plan view of a shear head with the shear foil according to the present invention
  • FIG. 3 a plan view of a double shear head with the shear foil according to the present invention
  • FIG. 4 a plan view of part of a shear foil according to the invention
  • FIG. 5 and 6 details of a shear foil according to the invention and FIGS. 7 to 15 various arrangements of the shear holes in a shear foil according to the invention.
  • FIG. 1 shows a shear head 10 of a dry shaver with a shear head housing 11 provided with a window-like opening 12.
  • a perforated shear foil 13 covers the window-like opening 12.
  • a cutter element carrier 14 is movably arranged, with the moving direction of the cutter element carrier 14 symbolized by the double arrow F.
  • the shear foil 13 is secured to the shear head housing 11. This securing is effected so that the longitudinal edges of the shear foil can be inserted in the gap between the bars 15 and the walls of the shear head housing 11.
  • the bars 15 are fixed to the shear head housing 11 by means of screws 16 piercing the shear foil 13 through the holes 9.
  • FIG. 2 shows the plan view of a shear head.
  • the main area bears the reference number 3, the border areas the reference number 5.
  • This figure further shows the screws 16 by means of which the shear foil 13 is fixed.
  • FIG. 3 shows a dry shaver with a double shear head. Two shear heads formed by one single shear foil 13 are visible. The shear foil 13 extends over two main areas 3 and the border areas 5. Between the two shear heads formed by one single shear foil 13, there are screws 17 provided for fixing the central part of shear foil 13.
  • FIG. 4 shows part of a shear foil 13 for a double shear head of a dry shaver in a spread-out state.
  • the shear foil 13 therefore has two identical shear foil sections I and II positioned on either side of the central line 2.
  • the drawing only shows the whole shear foil section I.
  • Each one of these sections I and II thus forms a part of the shear foil comprising one main area and at least one border area, that part of the shear foil forming a shear head.
  • Each shear foil section or part has a main area 3 in which the shear holes 4 are distributed in a certain screen definition and two border areas 5 in the present embodiment according to the invention in which, for stiffening the shear foil, the opening ratio of the shear holes 4 of the border area progressively decreases as compared to the corresponding measurement of the shear holes in the main area towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area. Opening ratio is understood to mean the ratio of the total operating surface of the shear holes 4 to the remaining strip surface.
  • the outer longitudinal edges of the shear foil are provided with free zones 8 without shear holes. In the drawing, only zone 8 of shear foil section I is shown. These zones are provided with recesses 9 for attachment of the border of the shear foil 13 on the edge of a shear head housing 11 by means of screws 16.
  • FIGS. 5 and 6 show details A and B of the shear foil 13 in one embodiment according to the invention. Identical parts bear the same reference numbers as in FIG. 4.
  • excellent shaving capacity at very good stiffening of the border zone of the shear foil 13 is achieved by making the measurement Q of the shear holes 4 taken transversely to the moving direction F of the cutter element carrier 14 in the border areas 5 equal to the corresponding measurement Q of the shear holes 4 in the main area 3, while the measurement L taken in the moving direction F of the cutter element carrier 14 towards the edge of the border area 5 positioned in the moving direction F of the cutter element carrier 14 and removed from the main area gradually decreases as compared to the corresponding measurement L in the main area. This means that the measurement L gradually decreases from shear hole to shear hole in the border areas towards said edge of the border area 5.
  • At least part of the shear holes 4 in the border areas 5 has the form of slits positioned with their longitudinal axes transversely to the moving direction F of the cutter element carrier.
  • An increase in stiffness of the border areas of the shear foil 13 can be achieved by gradually increasing the screen definition R positioned transversely to the moving direction F of the cutter element carrier in the order areas .Saswmar j th ssrse d fin n 9.
  • the outermost screen definition R is essentially larger than the innermost screen definition RQ' of a border area 5. It is practical to keep the screen definition R positioned in the moving direction F of the cutter element carrier 14 in the border areas 5 of the shear foil according to the present invention equal to the screen definition of the main area.
  • the slit-shaped shear holes in the border area can have a length of 0.0248 to 0.0323 inches and a widthof 0.0217 to 0.0138 inches.
  • each shear hole 4 in the border area 5 has the same width Q and the distances R between all adjacent openings 4 are equal.
  • each shear hole 4 has the same width Q but the distances R between adjacent openings increase in the direction to the border.
  • FIG. 9 shows another embodiment of a shear foil 13 which has shear holes 4 of generally rectangular form.
  • the width L of said holes extending transversely to the moving direction of the cutter element carrier decreases in the direction to the border.
  • the distances R between adjacent openings are equal, but the width Qof adjacent openings increases in the direction to the border.
  • FIG. 10 a further modified shear foil 13 is shown.
  • the width L of the shear holes 4 of the illustrated shear foil 13 transversely to the moving direction of the cutter element carrier decreases in the direction to the border.
  • the measurement Q of the shear holes in said direction to the border and the distances R between adjacent openings increase in said direction.
  • FIG. 11 shows a further modified shear foil 13.
  • the shear holes 4 of said shear foil 13 are arranged in rows which are staggered at a distance Y in respect to one another.
  • the sizes and distances of the holes 4 correspond to the arrangement according to FIG. 7.
  • FIGS. 12 to 14 further modifications of a shear foil 13, each of them provided with staggered rows of shear holes, are shown.
  • the sizes and distances of the shear holes 4 substantially correspond to FIGS. 8 to 10.
  • FIG. 12 further substantially corresponds to a part of the embodiment shown in FIGS. 5 and 6.
  • FIG. 15 shows a still further embodiment of the border area of a shear foil which has rows of holes 4 whose width extending transversely to the moving direction of the cutter element carrier decreases from hole to hole in the direction of the border.
  • the distances Z and Z between the rows transversely to the moving direction of the cutter element carrier are of different size.
  • the dry shaver is provided with one hear head or with several shear heads. It is further immaterial whether the shear heads are formed by one shear foil or by several shear foils. Each shear head, however, has one main area and at least one border area in which areas the holes are distributed. It equally does not matter whether each shear head is provided with its own cutter element carrier or the cutter element carriers are connected to each other or combined with each other. By the same token, various embodiments of shear heads are to be considered as equal to the shear heads dealt with in the present application.
  • the mode of separation of the shear heads in a double shear head is equally immaterial for the embodiment of the present invention, as the reinforcement of the shear foil at simultaneous improvement of the shaving capacity is secured according to the present invention by the embodiment of the shear foil according to the invention in each type of application and in each embodiment of the invention.
  • a different arrangement of the shear holes in the sections I and II, on either side of the central line 2 or on a shear head itself is also possible.
  • the shape of the shear holes can be chosen arbitrarily.
  • Shear foil for a dry shaver with at least one shear head provided with a cutter element carrier movable under the shear foil comprising shear holes distributed in at least one part of the shear foil that part forming the shear head having one main area and at least one border area, the measurement of the shear holes in at least one border area taken transversely to the moving direction of the cutter element carrier, for stiffening the shear foil, being kept equal as compared to the corresponding measurement of the shear holes in the main area and merely the measurement of the shear holes in the border area taken in the moving direction of the cutter element carrier being progressively decreased towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • Shear foil according to claim 1 comprising at least part of the shear holes in the border area having the embodiment of slits positioned with their longitudinal axes transversely to the moving direction of the cutter element carrier.
  • Shear foil according to claim 2 comprising the slit shaped shear holes in the border area having a length of 0.0248 to 0.0323 inches and a width of 0.0217 to 0.0138 inches.
  • Shear foil according to claim 1 comprising the shear holes being distributed according to a determined screen definition in at least one main area.
  • Shear foil according to claim 1 comprising the screen definition of the shear holes of the border area measured transversely to the moving direction of the cutter element carrier being progressively increased as compared to the main area towards that edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • Shear foil according to claim 1 comprising the screen definition of the shear holes in the border area taken in the moving direction of the cutter element carrier being equal to the screen definition of the shear holes in the main area.
  • Shear foil according to claim 1 comprising staggering the shear holes of adjacent hole rows, said hole rows being transversely positioned to the moving direction of the cutter element carrier, said staggering being effected at least in said border area transversely to the moving direction of the cutter element carrier.
  • Shear foil for a dry shaver with at least one shear head provided with a cutter element carrier movable under the shear foil comprising shear holes distributed in at least one part of the shear foil that part forming the shear head having one main area and at least one border area, the measurement of the shear holes in at least one border area taken transversely to the moving direction of the cutter element carrier, for stiffening the shear foil, being increased towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area, and merely the measurement of the shear holes in the border area taken in the moving direction of the cutter element carrier being progressively decreased, as compared to the corresponding measurement of the shear holes in the main area, towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • Shear foil according to claim 8 comprising at least part of the shear holes in the border area having the embodiment of slits positioned with their longitudinal axes transversely to the moving direction of the cutter element carrier.
  • Shear foil according to claim 9 comprising the slit-shaped shear holes in the border area having a length of 0.0248 to 0.0323 inches and a width of 0.0217 to 0.0138 inches.
  • Shear foil according to claim 9 comprising the length of the slit-shaped shear holes in the border area exceeding the corresponding measurement of the shear holes in the main area taken transversely to the moving direction of the cutter element carrier by up to about 30 percent.
  • Shear foil according to claim 8 comprising the screen definition of the shear holes of the border area measured transversely to the moving direction of the cutter element carrier being progressively increased as compared to the main area towards that edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • Shear foil according to claim 8 comprising the screen definition of the shear holes in the border area taken in the moving direction of the cutter element carrier being equal to the screen definition of the shear holes in the main area.
  • Shear foil according to claim 8 comprising staggering the shear holes of adjacent hole rows, said hole rows being transversely positioned to the moving direction of the cutter element carrier, said staggering being effected at least in said border area transversely to the moving direction of the cutter element carrier.
  • Shear foil according to claim 8 comprising the shear holes being distributed according to a determined screen definition in at least one main area.
  • Shear foil for a dry shaver with two shear heads combined to one double shear head said double shear head being formed of one single shear foil provided with shear holes and at least one cutter element carrier movable under the shear foil arranged underneath it, comprising the shear foil having one main area and at least one border area adjacent the main area for each shear head, the shear holes being distributed in those areas, the measurement of the shear holes in at least one border area taken transversely to the moving direction of the cutter element carrier, for stiffening the shear foil, being kept equal as compared to the corresponding measurement of the shear holes in the main area and merely the measurement of the shear holes in the border area taken in the moving direction of the cutter element carrier being progressively decreased towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • Shear foil according to claim 16 comprising the screen definition of the shear holes of the border area measured transversely to the moving direction of the cutter element carrier being progressively increased as compared to said main area towards that edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • Shear foil according to claim 16 comprising staggering the shear holes of adjacent hole rows, said hole rows being transversely positioned to the moving direction of the cutter element carrier, said staggering being effected at least in said border area transversely to the moving direction of the cutter element carrier.
  • Shear foil for a dry shaver with two shear heads combined to one double shear head said double shear head being formed of one single shear foil provided with shear holes and at least one cutter element carrier movable under the shear foil arranged underneath it, comprising the shear foil having one main area and at least one border area adjacent the main area for each shear head, the shear holes being distributed in those areas, the measurement of the shear holes in at least one border area taken transversely to the moving direction of the cutter element carrier, for stiffening the shear foil, being increased towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area and merely the measurement of the shear holes in the border area taken in the moving direction of the cutter element carrier being progressively decreased towards the edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main area.
  • Shear foil according to claim 19 comprising the screen definition of the shear holes of the border area measured transversely to, the moving direction of the cutter element carrier being progressively increased as compared to said main area towards that edge of the border area positioned in the moving direction of the cutter element carrier and removed from the main' area.
  • Shear foil according to claim 19 comprising staggering the shear holes of adjacent hole rows, said hole rows being transversely positioned to the moving direction of the cutter element carrier, said staggering being effected at least in said border area transversely to the moving direction of the cutter element carrier.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US00330928A 1972-02-10 1973-02-09 Shear foil for a dry shaver Expired - Lifetime US3815232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT107072A AT308588B (de) 1972-02-10 1972-02-10 Scherfolie für Trockenrasierapparate

Publications (1)

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US3815232A true US3815232A (en) 1974-06-11

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US00330928A Expired - Lifetime US3815232A (en) 1972-02-10 1973-02-09 Shear foil for a dry shaver

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US (1) US3815232A (de)
AT (1) AT308588B (de)
AU (1) AU473441B2 (de)
CA (1) CA973346A (de)
CH (1) CH550645A (de)
DE (1) DE2305680C3 (de)
DK (1) DK134055B (de)
FR (1) FR2171810A5 (de)
GB (1) GB1403663A (de)
IT (1) IT978973B (de)
NO (1) NO130931C (de)
SE (1) SE382771B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916522A (en) * 1973-10-08 1975-11-04 Matsushita Electric Works Ltd Outer blade for reciprocal type electric shaver
US3967373A (en) * 1973-03-22 1976-07-06 Matsushita Electric Works, Ltd. Outer blade for electric shaver
US4170822A (en) * 1976-12-01 1979-10-16 U.S. Philips Corporation Dry shaving apparatus
GB2214124A (en) * 1988-01-26 1989-08-31 Matsushita Electric Works Ltd A cutting head for reciprocating-type dry shavers
GB2224044A (en) * 1988-10-15 1990-04-25 Matsushita Electric Works Ltd Hand-held clipper for removing entangled fibers from the surface of fabrics
US5088200A (en) * 1990-10-11 1992-02-18 Andis Company Hair trimmer having a low-friction rotary drive
US5325590A (en) * 1993-03-09 1994-07-05 Andis Company Hair trimmer having a low-friction rotary drive
US5867908A (en) * 1996-05-31 1999-02-09 U.S. Philips Corporation Shaving apparatus
EP1568450A1 (de) * 2004-02-27 2005-08-31 Izumi Products Company Elektrischer Vibrationsrasierapparat, Innenmesser und Herstellungsmethode eines Innenmessers
EP1685931A1 (de) * 2003-11-11 2006-08-02 Matsushita Electric Works, Ltd. Elektrischer rasierapparat
CN100364732C (zh) * 2004-02-19 2008-01-30 株式会社泉精器制作所 电动剃须刀
US20160089799A1 (en) * 2014-09-30 2016-03-31 Izumi Products Company Rotary electric shaver
US20170173804A1 (en) * 2015-12-17 2017-06-22 Troy Patrick Worth Opposed dual foil shaving heads and trimmer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2455723C2 (de) * 1974-11-25 1983-01-20 Braun Ag, 6000 Frankfurt Scherfolie für Trockenrasierapparate
DE19720333B4 (de) * 1997-05-15 2007-01-04 Robert Bosch Gmbh Verfahren zur Messung von Kraftstoff, der Kraftstoffeinspritzventilen zur Einspritzung an einer Brennkraftmaschine zugeführt wird und Kraftstoffeinspritzsystem zur Durchführung des Verfahrens

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229366A (en) * 1963-09-19 1966-01-18 Strezoff Bogoia Dry shaving device
US3468025A (en) * 1965-10-22 1969-09-23 Braun Ag Flexible screen foil
DE2019746A1 (de) * 1970-04-23 1971-11-04 Braun Ag Trockenrasierapparat

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229366A (en) * 1963-09-19 1966-01-18 Strezoff Bogoia Dry shaving device
US3468025A (en) * 1965-10-22 1969-09-23 Braun Ag Flexible screen foil
DE2019746A1 (de) * 1970-04-23 1971-11-04 Braun Ag Trockenrasierapparat

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967373A (en) * 1973-03-22 1976-07-06 Matsushita Electric Works, Ltd. Outer blade for electric shaver
US3916522A (en) * 1973-10-08 1975-11-04 Matsushita Electric Works Ltd Outer blade for reciprocal type electric shaver
US4170822A (en) * 1976-12-01 1979-10-16 U.S. Philips Corporation Dry shaving apparatus
GB2214124A (en) * 1988-01-26 1989-08-31 Matsushita Electric Works Ltd A cutting head for reciprocating-type dry shavers
US4926552A (en) * 1988-01-26 1990-05-22 Matsushita Electric Works, Ltd. Cutting head for reciprocatory-type dry shavers
GB2214124B (en) * 1988-01-26 1992-06-17 Matsushita Electric Works Ltd A cutting head for reciprocatory-type dry shavers
GB2224044A (en) * 1988-10-15 1990-04-25 Matsushita Electric Works Ltd Hand-held clipper for removing entangled fibers from the surface of fabrics
GB2224044B (en) * 1988-10-15 1993-06-23 Matsushita Electric Works Ltd Hand-held clipper for removing entangled fibres from the surface of fabrics
US5088200A (en) * 1990-10-11 1992-02-18 Andis Company Hair trimmer having a low-friction rotary drive
US5325590A (en) * 1993-03-09 1994-07-05 Andis Company Hair trimmer having a low-friction rotary drive
US5867908A (en) * 1996-05-31 1999-02-09 U.S. Philips Corporation Shaving apparatus
EP1685931A1 (de) * 2003-11-11 2006-08-02 Matsushita Electric Works, Ltd. Elektrischer rasierapparat
US20070056166A1 (en) * 2003-11-11 2007-03-15 Matsushita Electric Works, Ltd. Electric shaver
EP1685931A4 (de) * 2003-11-11 2007-05-09 Matsushita Electric Works Ltd Elektrischer rasierapparat
US20100126022A1 (en) * 2003-11-11 2010-05-27 Matsushita Electric Works, Ltd. Electric shaver
US20130125401A1 (en) * 2003-11-11 2013-05-23 Panasonic Corporation Electric shaver
US8806763B2 (en) * 2003-11-11 2014-08-19 Panasonic Corporation Electric shaver
CN100364732C (zh) * 2004-02-19 2008-01-30 株式会社泉精器制作所 电动剃须刀
EP1568450A1 (de) * 2004-02-27 2005-08-31 Izumi Products Company Elektrischer Vibrationsrasierapparat, Innenmesser und Herstellungsmethode eines Innenmessers
US20050188546A1 (en) * 2004-02-27 2005-09-01 Izumi Products Company Reciprocating electric shaver, inner cutter and inner cutter manufacturing method
CN100371146C (zh) * 2004-02-27 2008-02-27 株式会社泉精器制作所 往复式电动剃须刀及其内刀
US20160089799A1 (en) * 2014-09-30 2016-03-31 Izumi Products Company Rotary electric shaver
US20170173804A1 (en) * 2015-12-17 2017-06-22 Troy Patrick Worth Opposed dual foil shaving heads and trimmer

Also Published As

Publication number Publication date
DE2305680B2 (de) 1979-04-12
SE382771B (sv) 1976-02-16
DE2305680C3 (de) 1979-12-06
GB1403663A (en) 1975-09-03
IT978973B (it) 1974-09-20
NO130931B (de) 1974-12-02
DE2305680A1 (de) 1973-08-23
CA973346A (en) 1975-08-26
DK134055B (da) 1976-09-06
AU473441B2 (en) 1976-06-24
AT308588B (de) 1973-07-10
NO130931C (de) 1975-03-12
CH550645A (de) 1974-06-28
FR2171810A5 (de) 1973-09-21
AU5195073A (en) 1974-08-08
DK134055C (de) 1977-02-14

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