US3271857A - Dry razor having a spring means to open the razor head - Google Patents

Dry razor having a spring means to open the razor head Download PDF

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Publication number
US3271857A
US3271857A US348942A US34894264A US3271857A US 3271857 A US3271857 A US 3271857A US 348942 A US348942 A US 348942A US 34894264 A US34894264 A US 34894264A US 3271857 A US3271857 A US 3271857A
Authority
US
United States
Prior art keywords
spring
shaving head
housing
open
head
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.)
Expired - Lifetime
Application number
US348942A
Other languages
English (en)
Inventor
Poletiek Johannes Hubertus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Philips Corp
North American Philips Co Inc
Original Assignee
US Philips Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3271857A publication Critical patent/US3271857A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B26B19/3853—Housing or handle
    • 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
    • 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
    • B26B19/3853—Housing or handle
    • B26B19/386—Means for attaching the head thereto

Definitions

  • This invention relates to dry-shaving apparatus in which a covering plate is fitted on a housing so as to be capable of being swung open.
  • a shaving head is adapted to accommodate at least a cutter plate of a dry-shaving apparatus and has its peripheral lower edge adjoining the edge of the opening of the housing, a spring being provided which causes the covering plate to be swung open after a closure is unlatched.
  • An object of the invention is to simplify the swinging and fixing device thus required for the head while retaining a reliable operative device and at the same time reducing as far as possible the manufacturing and assembling cost thereof.
  • Such a construction is convenient for a shaving head to permit the head to be cleaned after use, such as by blowing out the hair chamber, without a need of removing the whole of the shaving head. It is then only necessary, for example, to depress an unlatching button by a finger of the hand holding the apparatus and the head swings open, whereafter it can be closed again without the other hand having to be used in this operation.
  • the periphery of the head adjoins the upper edge of the housing with uniform transition and without slits being formed through which hairs could penetrate from the hair chamber to the exterior.
  • a device attains these objects in that one end of a spring element is fixed to the lower side of the covering plate and its other end engages under spring pressure, but otherwise freely, an inclined guide surface on a side wall of the housing, the moment of the spring being so directed that the force exerted on the spring element by the guide surface causes the covering plate to be swung open while the free end of the spring element slides up along the guide surface.
  • a single spring of simple shape is sufficient which can cause the shaving head, after release to be swung open as well as to maintain the shaving head in its open position.
  • the construction can thus readily be made such that a separate spindle for the swinging movement of the covering plate is not required and, if desired, the cover may also be completely removed without complications, for example to replace it by an auxiliary fixture, such as a hairclipping device, when used on a dry-shaving apparatus.
  • an auxiliary fixture such as a hairclipping device
  • An advantageous embodiment is characterized in that the free end of the spring engages an inclined inwardlyextending guide surface on the swing side of the housing and the spring makes an acute angle with the said surface as well as with the lower surface of the covering plate, the spring force being directed towards the lastmentioned lower surface.
  • the free end of the spring climbs of its own accord along the said guide surface after the shaving head is unlatched, thereby pushing the shaving head into its open final position in which the angle made between the spring and the lower surface of the shaving head is considerably reduced.
  • One preferred embodiment is an arrangement in which the guide surface has a projection behind which the free end of the spring engages when the covering plate is completely swung open.
  • the single spring thus also provides for blocking of the shaving head at its open position.
  • FIGURE 1 is a cross-sectional view along the main axis through the portion of a housing comprising a shaving head, to which the invention is applied and
  • FIGURE 2 is a plan view of the spring used therein.
  • the shaving head is indicated by the reference numeral 1 and the housing of the apparatus by the reference numeral 2.
  • the shaving head closes a chamber 3 in the housing through which one or more driving spindles extend along the center line 4, shown in dot-anddash line. They drive, for example in a rotary manner, one or more cutting members, the cutting system being housed in a cavity 5 of the shaving head 1, while the capshaped cutting plates may project more or less above the surface of the shaving head through apertures provided therein. All this is not shown in the figure since such devices are fully known and need no further explanation for proper understanding of the invention.
  • FIGURE 1 also shows that a peripheral lower edge 6 of the shaving head rests on an edge 7 of the opening of the portion of the housing supporting the shaving head.
  • a U-shaped spring 8 having the ends 9 of its legs fixed in the housing 2, engages through its U-shaped portion 10 with an inclined upwardly-extending surface 11 of a latch 12 which forms part of the shaving head 1, so that the latter is held fast and attracted in its closed position until an unlatching button 13 is depressed and pushes the spring 8 inwards.
  • the shaving head 1 will then swing open under spring pressure and this is achieved as follows.
  • the legs 16 of the spring make an acute angle with the guide surface 18 as well as with the lower surface of the shaving head 1 and since the spring force is directed to the last-mentioned surface as indicated by arrow P, it tends to make the angle Y between the spring element 14 and the lower surface of the shaving head 1 as small as possible. Consequently, after unlatching, the bight portion 17 climbs up along the guide surface 18 and the shaving head is pushed up into the position shown in broken line in FIGURE 1. In the final position the bight portion 17, which constitutes the free end of the spring, engages behind a projection 23 of the guide surface 18, thus blocking the swinging movement and determining the final position of the shaving head swung open.
  • the spring 14 exerts at any position a force on the shaving head which pulls the lower edge on the swing side inwards, this edge at the same time being drawn, at 21, onto the supporting edge of the housing.
  • the U-spring 1-4 will not at the least be a disturbing element in the chamber 3 since the legs 16 are located varound the driving device and can extend along the wall of the chamber 3. It is also not imperative to use torsional spring force since the ends 15 of the U-spring can be rigidly secured and at the position shown in FIGURE 1, the spring can be sufiiciently prestressed by bending it downwards from an initial position. In this case the spring will initially have an upwardly curved shape or, in contrast with FIGURE 1, it will have a curved shape in its operating position.
  • a shaving head for a dry shaver having a housing and including a shear plate adapted to swing open from a normally closed horizontal position to an open, generally vertical position, said housing being provided with an inclined wall, means mounting said shaving head on the housing of said dry shaver with the peripheral lower edge thereof abutting and engaging a portion of the edge of the opening of said housing, said means comprising a spring having one end secured to the underside of said shaving head and another portion thereof freely and slidably engaging the inclined wall of said housing, the moment of force on said spring being so directed by said inclined wall that the shaving head is swung open when said portion of the spring slides up said inclined wall.
  • a shaving head for a dry shaver as claimed in claim 1 wherein said inclined wall extends inwardly in said housing and said spring makes an acute angle with the undersurface of said shaving head and said inclined wall.
  • a shaving head for a dry shaver as claimed in claim 1 wherein said inclined wall is provided with a projection behind which said portion of said spring engages at the open final position of said shaving head.
  • a shaving head for a dry shaver as claimed in claim 1 wherein said spring element is U-shaped, the two ends of the legs of said spring being secured to said shaving head, and the bight portion thereof engaging and slidable along said inclined wall.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US348942A 1963-03-06 1964-03-03 Dry razor having a spring means to open the razor head Expired - Lifetime US3271857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL289891 1963-03-06

Publications (1)

Publication Number Publication Date
US3271857A true US3271857A (en) 1966-09-13

Family

ID=19754489

Family Applications (1)

Application Number Title Priority Date Filing Date
US348942A Expired - Lifetime US3271857A (en) 1963-03-06 1964-03-03 Dry razor having a spring means to open the razor head

Country Status (8)

Country Link
US (1) US3271857A (fr)
AT (1) AT245429B (fr)
BE (1) BE644712A (fr)
CH (1) CH416375A (fr)
DK (1) DK107922C (fr)
ES (1) ES297194A1 (fr)
GB (1) GB995525A (fr)
NL (1) NL289891A (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637901A (en) * 1951-07-20 1953-05-12 Schick Inc Beard clippings receptacle for electric shavers
US2780864A (en) * 1953-02-20 1957-02-12 Jacob L Kleinman Shaving implements
DE1091901B (de) * 1959-05-29 1960-10-27 Siemens Elektrogeraete Gmbh Elektrisches Trockenrasiergeraet mit einer abnehmbaren Gehaeusekappe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637901A (en) * 1951-07-20 1953-05-12 Schick Inc Beard clippings receptacle for electric shavers
US2780864A (en) * 1953-02-20 1957-02-12 Jacob L Kleinman Shaving implements
DE1091901B (de) * 1959-05-29 1960-10-27 Siemens Elektrogeraete Gmbh Elektrisches Trockenrasiergeraet mit einer abnehmbaren Gehaeusekappe

Also Published As

Publication number Publication date
BE644712A (fr) 1964-09-04
NL289891A (fr)
DK107922C (da) 1967-07-17
ES297194A1 (es) 1964-08-16
CH416375A (de) 1966-06-30
GB995525A (en) 1965-06-16
AT245429B (de) 1966-02-25

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