DE2023111A1 - Safety razor - Google Patents

Description

t BERLIN 33 8 MUNICH 27

Dr.-lng. HANS RUSCHKE Dipl.-Ing. HEINZ AGULAR

T.le _fl r. _m n, Adr ....: PATENTANWÄLTE T .. ^ rm _m .Adr ....:

Quadrature Berlin Quadr.tur Mdndi.n

G I387 EER / G.

The Gillette Company, Prudential Tower Building, Boston,

Massachusetts, V.St.A.

Safety razor

The present invention relates to razors.

Conventional facial razors that have a flat blade edge are ill-suited to shaving other differently shaped parts of the body. It is already it has previously been proposed to arrange a blade on a fixed convex or concave blade support in order to necessary contour, but such razors obviously have limited application and are even dangerous borrowed when the blade contour does not match the contour of the body matches.

It is therefore an object of the present invention to provide a To provide a razor that is capable of conforming to body contours of a variety of convex and concave Assume blade edge shapes on all blade contours is easily adjustable and has all protective features of a conventional safety razor.

009847/0123 -V-JJORKMW.

Another goal is to provide a women's razor, which continuously and easily over a wide range of concave and convex blade settings is changeable without removing the blade or any other part of the razor that can be further applied to each Desired contour can be set permanently, and the auoi » safe and cheap and simple, durable and reliable Construction owns.

Another goal is to have a single cutting edge Provide tape or injector razor with an adjustable blade edge to adapt to the various Has body contours.

Another goal is to have a replaceable tape razor to be provided with an adjustable blade edge.

According to the invention, a safety razor is provided, having a handle portion and a flexible blade support surface with first and second ends between which a shaving zone is defined;: to support a blade section intended for shaving, the sharpened edge of the blade over the edge of the support surface protrudes. The flexible blade support surface is disposed on the handle portion, around between the first and the second end to be bent to the curvature of the blade support surface and thereby the curvature of the blade in the Alter the shaving area.

In particular embodiments, the adjustment device installed between the support surface and the handle to change the curvature of the support surface.

In the preferred embodiment, the handle includes a blade support structure that is a plate-shaped Having a limb and a pair of arms spanning the two ends

009847/0123 bathroom original

the support surface _; This plateau-shaped member is supported in a flexible manner, the arms being able to bend freely in the direction of 0.1 to one another, depending on whether the curvature of the supporting surface is increased or decreased. The Κϋη ^ βη-; i * f lagef iäene and the-arms can be made from a single thin i-ieguame :. (ie plastic) strips in the

two ends under the .. blade loading area;: urüc.: are folded and attached to * the * plate-shaped member so as to form the flexible ^r -.men arms, the radius of curvature of the curved inner surfaces connecting the bearing surface and the arms, without obstruction ä area increase with the increase in the curvature of the Klingenauflage-. The blade support surface can be between the middle and either end of it. changing dimensions in order to distribute the forces, ie the bending stresses, evenly over the length used for shaving (by making the middle thicker than the ends).

The adjustable razor of the present invention is most easily provided in the form of a tape razor, with the razor blade material from a storage chamber conveyed via an adjustable blade support surface will ', creating an exposed razor edge of the desired convex or concave shape is provided in order to bring the j ne.buckthorn to be guided. A C-shaped restraint is made It is provided that a length shift of the blade over the blade support surface is possible, namely under the Effect of blade feed and guide devices that are located below the adjustment structure inside the handle are arranged.

Since the parts of this razor are all inexpensive made of injected Plastic can be made, and since the blade guide and feed mechanism is relatively

00984 7701 * 3 bad original

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The whole razor can be manufactured quickly and cheaply * can be provided interchangeably «Thus, failure phenomena on the plastic parts, in particular on the adjustment pin and the matching threaded housing are not decisive factors, as these parts are only

to
must be designed in such a way that they have a service life that corresponds to the stock of blades in the razor

The invention will now be explained with reference to the accompanying drawings. In these is

Fig. 1 is a side view of the tape razor according to the present invention Invention!

FIG. 2 is an exploded perspective view of the embodiment of FIG

Fig. 3 is a section along line 3-3 in Fig. Ij

Figure k is a partial view of the Pig's Basler apparatus. I, showing only the upper section set to an extreme setting j

Figure 5 is a partial cross-sectional view of a portion of the adjustment knob to adjust the pitch of the neck edge.

In the drawings a razor is W tot "IGT., The freigitot continuously sections" a Bassdkliaige 11, welehe a sharpened edge 12 and has EL ™ .gegesQbe rl read Kaate 13, and a Kiingenvoz ^ cim'belniielt 1 # »mineral Blades "counter I5, a Klingentragweric J &# « inen dlaaaife together control button 18, e £ sae peat ^^ äsag 20 and a handle 22 and includes.

As can be seen in Fig. 1,
16 a hanging pad & 3
te 24.25, protruding bladesfSliruiagsaiiisfitÄ® 26.27, flexible

BATH ORIGINAL

009847/11123, '..

Has support arms 29,30 and a rectangular surface 31 which is determined by upstanding walls 33 and 3 ^. A number of teeth 37 protrudes from a thin strip 38, which is arranged perpendicular to and in one piece with an elongated edge of the underside 39 of the blade support surface 23 is. The construction of the blade support surface 23 can be over the width of the shaving zone may be changeable to the stronger Compensate for the bend in the middle of the support surface, for example the thickness can be greater in the middle than at the ends and continuously variable in between to the Compensate for bending loads. "

A plate-shaped member 40 protrudes downward from the blade holder 16 and is provided with recesses 41 which mate with pins (not shown) in the handle 22 in order to achieve the correct alignment of the razor components with one another. Furthermore, the plate-shaped link has a blade storage chamber 42 for receiving a blade spool 44, a blade conveying slot 45 for conveying the blade band therefrom and a slot-shaped opening 47 for receiving the blade feed handle 50, which is connected to the blade winding mandrel 5I and whose one rotation requires complete replacement which on the support surface 23 for shaving _- results in a geriden blade edge. A blade number disk 15, as disclosed in US Pat. No. 3,262,198, is used to record the blade advance, namely the disk 15 is connected to the handle 50 by an eccentric lug 52 such that one full turn of the handle 36O ⁰ moves the disk 15 forward by one number. Other storage, conveying and guiding mechanisms can be used in place of the device described above. For example, a ratchet advance system can be used and numbers can be placed directly on the blade tape, eliminating the need for the counting wheel.

" _{Λ Λ} BAD ORIGINAL

009847/0 123

The adjusting pin 53, which is received in a cylindrical bore 54 of the adjusting knob 18, is arranged in the center and on the underside 39 of the blade support surface 23. As can be seen in FIG. 5, the adjusting knob 8, made from a malleable plastic material, closes a helical one formed in the bore 54. Internal thread 55 a. The thread 55 is dimensioned and curved in such a way that it can accommodate the projections 5b arranged helically on the adjusting pin 53 and hold them in place by means of frictional engagement, these projections being either held in place in the thread by means of frictional engagement in that the projections are formed with a slightly different curvature, or dadurciij that they approximate a somewhat larger diameter than the respective curvature or the diameter of the thread 55 * or dadurc that they have a combination of the two measures. This frictional engagement is designed in such a way that it prevents the pin 53 from being released by the button 18 during normal shaving, but nevertheless allows the button 18 to be turned by hand to adjust the position of the setting rod 53. There are also recesses in the bore 54 63, which facilitate the assembly of the pin and the button by providing guide channels for inserting the projections 58 through the unthreaded portion 56 of the bore 54. Here the button 18 is briefly deformed * to enable this insertion.

The outer surface of the button 18 closes a truncated cone Section 65, through the tip of which the adjusting pin 53 protrudes, and a dial 67 integral therewith one which suitably has a corrugated outer circumference 68 to turn the dial and thus the knob to to adjust the pin 53.

As shown in FIGS. 2 and 3, the cover member closes

009847/0123 ^{BAD 0RleiNAL}

20 a plate-shaped member 70, the lower cold part 71 of which fits to the step 74 in the plate-shaped member kO of the blade holder II. The plate-shaped member 70 also includes a slot Tj , through which a part of the dial 67 hinders, whereby the slot 75 prevents an axial displacement of the adjusting knob 18 in the block that any rotational movement of the S- is converted into an axial displacement of the setting rod 53. The flange 76 », which defines an aalbkreisföriBige recess 7. also limits an axial pre-displacement of the setting knob 1. The plate-shaped member 70 ends in flexible, opposing connecting arms 7> and 79 # between which a flexible blade _{cover (J} or Kjami; .ei · 8ü 'is arranged, in the form of C-i'örraigen bracket, which has an upper section 81 and a lower section 82 with mutually opposing parallel lines b > or »ι k possesses in order to fix the blade segments r U:;. rotation no. of the blade propelling ax handle 50 In the longitudinal direction: can be passed over the support surface.

Each of the clamp sections 81,82, which ia substantially iare entire length by connecting portions 87 are connected to each other, includes a number of battlements or fingers 88 and 89 a, which have parallel opposite ^ geisSU ^ "standing surfaces 90 _{a nd} their bases 9I are connected to the neighboring bridges by means of thin flexible strips 92 old. The space between adjacent teeth contains the maximum concave or convex curvatures that can be achieved with the Kliasgerxklaaeer 80 usad with the paved blade length 11 intended for “shaving”.

To accommodate the adjustment pin 53 ″ on the iQ-ingen charging area 2> is attached, is missing in the ride of Arnes 32 a tooth 89. As a result of the teeth 89 and the Connection strelfen 92 resulting in flexibility of the blade

009847/0123 ■ ■. ,

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cover 8O may be the blade cover 8O deform bending together with the blade support surface 23, due to the action of the displacement of the setting pin 53 vertically below the upper surface of the support surface 2J> _a The EndzäJine j, a ^1} include recesses 96 to the blade guide lugs 26 , 27, to align the blade holder 16 and cover member 20 with respect to one another.

The handle 22 includes curved inner surfaces 98 which are connected to the Support surface 23 and with the flexible end portions 24 and 25 of the blade holder l6 cooperate in such a way that they provide a Vorsc.ubweg for the blade 11 from the supply roll 44 up to take-up reel 5I. The splash 99 that comprises a circular recess 100 which cooperates with the recess 77 in the flange 76 of the cover member 16 in such a way that enclosing the frustoconical portion 65 of the button also prevents axial displacement of the button. The handle 22 also includes a slot 101 aligned with the slot 73 of the cover member 20, through which a further part of the disk 67 protrudes. A line count window 102 displays the numbered portion of the Blade counter 15 free, and a depending portion 104 is used to hold or manipulate the razor.

In use, a blade length intended for shaving is brought into the razor position on the blade support surface 23 by suitable rotation of the blade advancing handle 50. The desired curvature of the exposed edge is adjusted by turning the knob 18, namely by the projections 58 on the adjustment pin 53 foiling the helical thread 55, while the knob itself through the slots 101 and 75 and through the flanges 76 and 99 against each axial Shift is secured. Since the adjustment pin 53, which is attached to the underside 39 of the blade support surface 23, cannot rotate, a rotation of the adjustment knob 18 results in an axial displacement of the adjustment pin 53 by means of

0 09 8 47 / 01.23 BAD original

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the bore 54, whereby the Klingenauf lagefläciie 23 is lifted in a concave or convex shape or lowered in the center of the plane is _a example, it is apparent from Figo 1, that a displacement of the disc 67 from the right "to the left, the blade support surface 23, together with the for shaving exposed blade length 11 and the blade cover 80 caused to assume the curvature shown in FIG.

To accommodate the projection in the perpendicular to the Adjustment pin 53 trending plane resulting in shortened The length of the blade support surface allows for flexible end sections 24, 25 it * the flexible arms 29,30, in the direction of to move towards each other »The bracket link arms 76 and 79 similarly flex towards each other that to accommodate the changes in the curvature of the blade cover 80.

The friction between the protrusions 58 and the thread 55 fixes this curvature when the hand rotation stops, and the curvature is certain to be retained with normal shaves.

Claims 0Q9847 / 0123

BAD QRlGlNAt

Claims (1)

- 10 claims A safety razor having a handle portion and having a flexible blade support surface having a first and having a second end defining a shaving zone therebetween for supporting one intended for shaving Length of the blade in this shaving zone, with one sharpened edge of the blade over one edge of the support surface protrudes * characterized in that the flexible Blade support surface (23) on the handle section (22) is arranged to bend between the first and the second end (24,25) * around the curvature of the blade support surface and thereby changing the curvature of the blade (11) in the region of the length intended for shaving. 2.) Safety razor according to claim 1, characterized in that that the ends (24, 25) of the support surface (23) are connected to the handle section, and that an adjusting device (18,53)> which is arranged below the support surface and between its ends, with the support surface (23) engages in the area of the center in order to adjust the curvature of the support surface. 3.) Safety razor according to claim 2, characterized in that the adjusting device comprises a hollow, rotatable adjusting knob (l8) which has a helical thread (55) in its bore, and a pin (53) which extends axially through the bore (54) of the adjusting knob (18) and which with the side of the pin remote from the knob (18) engages with the support surface, the pin having at least one shoulder or helical projection (58) which is dimensioned so that it is in frictional engagement with the helical thread and thus advances or retracts the pin (53) when the knob is turned in order to adjust the curvature of the support surface (23)! 009847/0123 BAD - Ii - 4.) Safety razor according to claim J, characterized gekennaichnet, The adjustment knob had a frustoconical shape nat and one serving as an adjusting disk on the circumference Has flange that extends in the radial direction from its base protrudes and through positioning slots (7d, 101) in the razor housing nindurcaragt 5 ») Safety razor according to claim 4, characterized in that that the adjusting knob (18) is secured against axial displacement by the adjusting disc flange (67 ")» which cooperates with the slots (75 * 101), and through fit- ^ de, Plansche provided with Ausspax-unjen (76.77 * 99 »100)» die the "ve ^ el frustum-shaped .. section of the adjustment knob (l8) include and cover the adjustment disk flange. 6.) Safety razor according to claim 1, characterized gekennzeiclinet, that a blade guard (6o) opens the blade the support surface (25) holds in position. 7 ·) Safety razor according to claim 6, characterized in that the blade siciating member (8o) has the shape of a G-shaped bracket which has a first elongated claw part that covers the blade (ll) on the support surface (23), a second and parallel elongate member (62) extending below the support surface (2J5), and a% intermediate portion (Jf) which connects the first and second portions and these forces in the operational, the blade-holding in position position " ö.) Safety razor according to claim 7, characterized gekennzeicnnet, that each of the bracket parts (81,82) comprises a number of teeth (88,89) interconnected by thin flexible Strips (927 connected and separated from each other around a predetermined distance away that is the same as that for the bracket parts corresponds to the desired maximum curvature. 0098.4 7./0123 BAD ORIGINAL . - 12 - 9) Safety razor according to claim 6, characterized in that that both the blade securing member (80) and also the blade support surface (23) at their respective ends be carried by resilient Ai-me (78,79 and 29 * 30), which the Securing link and the bearing surface resilient properties confer, and that cooperating approaches (26,27) and recesses (96) the correct relative position of the locking link and the support surface / secure each other. 10.) Safety razor according to claim 9 _B, characterized in that the blade support surface (23) and its resilient support arms (29,30) have an integral thin flexible strip, the ends of which are partially folded back under the blade support surface and form the arms, the im their curved surfaces between the two ends of the blade support surface and the arms have an increased radius of curvature as the curvature of the blade support surface between the ends is increased. 009847/0123