US3390454A - Curved shaving head with a flat surface and a movable cutter with a similar flat surface and having a pivotal end and a spring loaded end - Google Patents

Curved shaving head with a flat surface and a movable cutter with a similar flat surface and having a pivotal end and a spring loaded end Download PDF

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Publication number
US3390454A
US3390454A US636384A US63638467A US3390454A US 3390454 A US3390454 A US 3390454A US 636384 A US636384 A US 636384A US 63638467 A US63638467 A US 63638467A US 3390454 A US3390454 A US 3390454A
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US
United States
Prior art keywords
shaving
flat surface
head
plate
portions
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Expired - Lifetime
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US636384A
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English (en)
Inventor
Godefroy Johan
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INVENTA TRUST REG
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INVENTA TRUST REG
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Publication of US3390454A publication Critical patent/US3390454A/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
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof

Definitions

  • An electric shaver comprising a cutter head with a plurality of substantially semi-circular cutter blades arranged transversely to the longitudinal direction of said cutter head, said cutter blades being flattened substantially according to a chord between a point situated in or near the longitudinal centre plane of the cutter head and a second point situated sideways thereof.
  • This invention relates to a shaving head for an electric shaver, comprising a cutter head with a plurality of mainly semi-circular cutter blades arranged transversely to the longitudinal direction, said cutter blades resting with their circumference against the inner surface of a correspondingly curved thin shaving plate, said shaving plate being provided with a large number of slots of apertures which together with said cutter blades exert a shearing action on the beard hairs projecting through the apertures when the cutter head is vibrated in the longitudinal direction.
  • the invention aims at providing such a shaving head which does not present this drawback.
  • the shaving head is characterized in that each of the cutter blades of the cutter head, the circumference of which is mainly, at least approximately, circular arc-shaped, is flattened more or less according to a chord between a point situated in or near the longitudinal centre plane of the cutter head and a second point situated sideways thereof, said flattening joining the circular arc-shaped circumferential portions in a gradually rounded-off manner.
  • the portions of the blades of which the flattening adjoins the circular arc-shaped portions have a considerably smaller radius of curvature and are therefore exceedingly suitable for a thorough shaving, said circular arc-shaped portions being destined for a normal shaving action.
  • the flattened portions may present a slight curvature in order thus to obtain at least three differently curved areas each adapted to a specific shaving action.
  • the shaving plate is given a hardly yielding support, which is particularly favourable in the case of yielding skin portions which are shaved with said strongly curved portion of the shaving plate, whereas the gradually curved portion of the shaving plate is supported on the other side in a resiliently yielding manner which is favourable when shaving skin portions supported by jaw bones.
  • a shaving plate the apertures of which in said plate situated in those areas which correspond with the strongly curved portions of the cutter head are constituted by substantially round or square apertures.
  • the apertures in the remaining portions of the shaving plate are then mainly rectangular and are arranged in longitudinal sense successively in rows which cover the apertures in adjacent rows preferably partly, substantially round or square apertures being provided in the dams between the short sides of said apertures.
  • This shaving plate preferably has been buckled in advance in those regions which cO-operate with the strongly curved portions of the cutter head, so that when clamping the shaving plate on the shaving head a smooth junction on the cutter head is guaranteed.
  • FIG. 1 a diagrammatic cross-section of an embodiment of a shaving head according to the invention.
  • FIG. 2 a view of part of a shaving plate for such a shaving head.
  • the shaving head shown comprises a frame 1 on which a shaving plate 2 with apertures 3 is clamped. Within this frame a cutter head 4 with cutter blades 5 is provided, said cutter head being adapted to be vibrated in longitudinal direction by means of parts which are not shown.
  • the cutter blades 5 are with their circumference in contact with the inner surface of the plate 2.
  • a curved portion 6 situated in or close to the longitudinal centre plane of the shaving head and a curved portion 7 situated more sideways the cutter blades 5 are somewhat flattened as shown at 8, which flattened portion 8 may have a certain curvature.
  • the cutter blades have differently curved portions, namely a portion 9 comprising approximately half the circumference and having a more or less circular curvature and a moderate radius of curvature, furthermore two strongly curved portions 6 and 7, and finally a relatively flattened portion 8. Each of these portions is thereby adapted for a specific shaving action.
  • FIG. 1 a cutter head 4 is shown which is preferably applied.
  • This head is pivotally mounted on pins 10 near one longitudinal side and at the other longitudinal side it is pressed by springs 11 against the shaving plate, said pins and springs being secured to the frame '1.
  • the pins 10 are thereby situated near the curved portions '7 of the shaving plate.
  • this portion 7 is hardly yieldingly supported against transverse forces so that in that area a strong local pressure may be exerted on yielding skin portions, in particular of the cheek.
  • the other strongly curved portion 6 on the other hand may yield somewhat since it is situated approximately half-way between the pivot pins 10 and the springs 11. This portion is particularly suitable to shave the more sensitive skin portion of the throat.
  • the portion 9 of the shaving plate is 0 likewise supported in a somewhat yielding manner and serves in particular for shaving the skin portions supported by bones, in particular near the lips and the nose.
  • Such an embodiment is furthermore particularly favourable for a rocking shaving head according to applicants simultaneously filed patent application Ser. No. 636,383, according to which the portion 7 performs a vibration movement perpendicular to the surface and the portions 6 and 9 perform a vibration movement mainly parallel to the surface.
  • the shaving plate is provided, as usual, with oblong shaving apertures, the skin around the hairs in these strongly curved portions of the shaving plate is not sufficiently all-sidedly supported which leads to a reduced directing effect, while, moreover, in those areas the plate is weakened. It is therefore to be preferred not to provide the strongly curved portions with oblong apertures but to provide them with round apertures. Thus it is also prevented that on exerting a strong pressure the skin protrudes in a shaving aperture and would be damaged by the cutter blades.
  • FIG. 2 shows a view of part of such a shaving plate from which the distribution of the various apertures is clearly apparent.
  • the junction with the cutter blades in the portion 8 may be unsatisfactory, since the plate in this portion will assume approximately the same curvature as oppositely the portion 9 of the cutter blades. It may therefore appear to be necessary to bend or buckle the shaving plate somewhat in advance in order to ensure a satisfactory junction along the entire circumference of the blades.
  • a shaving head is obtained of which the shaving action may be changed by the person using the shaver by changing the position relative to the skin.
  • Such a shaving head may be mounted on all shavers of the kind under discussion.
  • An electric shaving device comprising a shear comb which is curved with the exception of a flattened portion extending from the center of the curve to a position spaced from one end of the curve, and a movable blade means disposed within said comb and having a shape substantially corresponding to the shape of said comb, said movable blade means being pivotal about one end thereof and being spring loaded at the other end thereof.
  • An electric shaving device comprising a shear comb which is curved with the exception of at least one substantially flattened portion extending substantially from the center of the comb to a position spaced from said center; a cutter head being arranged within said combsaid cutter head comprising a plurality of cutter blades having a shape substantially corresponding to the shape of said comb, each of said blades being pivoted about one end thereof and being arranged generally transversely of the longitudinal direction of said comb; a biasing spring arranged at the other end of each of said blades and urging same towards said comb; and means to vibrate said blades in the general longitudinal direction of said comb.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US636384A 1966-10-27 1967-05-05 Curved shaving head with a flat surface and a movable cutter with a similar flat surface and having a pivotal end and a spring loaded end Expired - Lifetime US3390454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6615194A NL6615194A (de) 1966-10-27 1966-10-27

Publications (1)

Publication Number Publication Date
US3390454A true US3390454A (en) 1968-07-02

Family

ID=19798023

Family Applications (1)

Application Number Title Priority Date Filing Date
US636384A Expired - Lifetime US3390454A (en) 1966-10-27 1967-05-05 Curved shaving head with a flat surface and a movable cutter with a similar flat surface and having a pivotal end and a spring loaded end

Country Status (6)

Country Link
US (1) US3390454A (de)
BE (1) BE698181A (de)
CH (1) CH453128A (de)
DE (1) DE1553736A1 (de)
GB (1) GB1184672A (de)
NL (1) NL6615194A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807359A (en) * 1986-05-22 1989-02-28 U.S. Philips Corp. Dry-shaving apparatus
US4807365A (en) * 1986-01-17 1989-02-28 U.S. Philips Corp. Method for making the shaving head of a dry-shaving apparatus
WO2007017816A2 (en) * 2005-08-05 2007-02-15 The Gillette Company Electric razors

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2037871C3 (de) * 1969-08-26 1975-03-06 Braun Ag, 6000 Frankfurt Scherfolie für Trockenrasierapparate
JPS5624040Y2 (de) * 1975-12-16 1981-06-05
US4926552A (en) * 1988-01-26 1990-05-22 Matsushita Electric Works, Ltd. Cutting head for reciprocatory-type dry shavers
US5185926A (en) * 1992-02-07 1993-02-16 Remington Products, Inc. Multiple foil and cutting blade assembly for electric dry shavers
TR26501A (tr) * 1993-02-05 1995-03-15 Remington Products Elektrikli tras makinalari icin coklu kanat ve bicak donanimi.
DE102006052622A1 (de) 2006-11-08 2008-05-15 Braun Gmbh Scherfolie für einen elektrischen Rasierapparat

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099334A (en) * 1936-07-01 1937-11-16 John B Gormley Shaving device
US2104929A (en) * 1936-06-04 1938-01-11 William J Kendall Shaving device
US2183442A (en) * 1938-06-21 1939-12-12 Herbert H Blackwell Electric vacuum shaver
US2396181A (en) * 1944-10-10 1946-03-05 Douglas Leigh Inc Electric razor
US2445790A (en) * 1944-10-27 1948-07-27 Lonne Ingvar Mechanically operated razor
US2677885A (en) * 1950-09-08 1954-05-11 Kenneth W Chaun Shaving apparatus
US2827695A (en) * 1955-07-14 1958-03-25 Frank J Vitale Hair clippers for trimming hair to different lengths
US2841867A (en) * 1957-03-15 1958-07-08 Padgett Grady Reciprocating dry shaver head construction
DE1066912B (de) * 1959-10-08
DE1069500B (de) * 1957-05-02 1959-11-19
US3028668A (en) * 1960-08-16 1962-04-10 Dechaux Charles Dry shaver with rocking cutter

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1066912B (de) * 1959-10-08
US2104929A (en) * 1936-06-04 1938-01-11 William J Kendall Shaving device
US2099334A (en) * 1936-07-01 1937-11-16 John B Gormley Shaving device
US2183442A (en) * 1938-06-21 1939-12-12 Herbert H Blackwell Electric vacuum shaver
US2396181A (en) * 1944-10-10 1946-03-05 Douglas Leigh Inc Electric razor
US2445790A (en) * 1944-10-27 1948-07-27 Lonne Ingvar Mechanically operated razor
US2677885A (en) * 1950-09-08 1954-05-11 Kenneth W Chaun Shaving apparatus
US2827695A (en) * 1955-07-14 1958-03-25 Frank J Vitale Hair clippers for trimming hair to different lengths
US2841867A (en) * 1957-03-15 1958-07-08 Padgett Grady Reciprocating dry shaver head construction
DE1069500B (de) * 1957-05-02 1959-11-19
US3028668A (en) * 1960-08-16 1962-04-10 Dechaux Charles Dry shaver with rocking cutter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4807365A (en) * 1986-01-17 1989-02-28 U.S. Philips Corp. Method for making the shaving head of a dry-shaving apparatus
US4807359A (en) * 1986-05-22 1989-02-28 U.S. Philips Corp. Dry-shaving apparatus
WO2007017816A2 (en) * 2005-08-05 2007-02-15 The Gillette Company Electric razors
WO2007017816A3 (en) * 2005-08-05 2007-07-05 Gillette Co Electric razors
CN101237968B (zh) * 2005-08-05 2010-05-19 吉莱特公司 电动剃刀
US20100236073A1 (en) * 2005-08-05 2010-09-23 The Gillette Company Electric Razors

Also Published As

Publication number Publication date
CH453128A (de) 1968-05-31
BE698181A (de) 1967-10-16
NL6615194A (de) 1968-04-29
DE1553736A1 (de) 1971-06-24
GB1184672A (en) 1970-03-18

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