PT87220B - SHAVING MACHINE WITH LAMINATE PROTECTION AND A FACIAL TREATMENT - Google Patents

Abstract

A razor head (10) comprising a blade support (5), at least one blade (11, 13) disposed above the blade support (5) and a cap (20) disposed above the or each blade (11, 13). The cap (20) and blade support (5) are movable relative to each other between a first position in which the or each blade (11, 13) is exposed and a second position in which the or each blade (11, 13) is covered. A shaving aid (30) is provided which is disposed in a position for engaging a face when the cap (20) and support (5) are in the first position.

Description

Description

Field of invention

The present invention relates to a disposable razor and in particular to disposable razors with blade protection caps and areas on the caps for a facial treatment compound.

Fundamentals of the invention

Recently, disposable razors have been manufactured in which the shaver cover also serves as a blade protection cover. This is achieved by moving either the cover or the blades and the blade holder in relation to the cover so that either the cover or the holder can be immobilized in two positions, the first placing the cover in front of the blades to protect them when the shaver is stored, and the second, with the lid away from the edge of the blades, exposing the edge for shaving.

US patents 4,328,615, published on May 11, 1982, and 4,443,958, published on April 24, 1984,

- 1 ANA

by Peter Bovmian and Allen F. Frieze describe a razor in which the lid moves relative to the blade support surface and is immobilized either in the position of protected blades or in the position of exposed blades. This is achieved by extending the sides of the cover down over the blade support portion with ears protruding inward from the dimension of the cover to fit appropriate matching elements on the sides of the blade support portion.

One of these corresponding elements is a sliding surface that applies to one of the ears and defines a linear movement of the lid. Another ear is applied to a series of spaces defined by protrusions on the front side of the base. The protrusions and the ear form two retention positions. One of the holding positions immobilizes the cover in its retracted position with the blades exposed, while the other, when the ear is applied, immobilizes the cover in the protective position of the blades. This configuration allows the cover to serve as a protective cover and does so without using additional elements, or a substantial modification in the design of the disposable shaver. However, problems were encountered in the molding of the side of the blade support portion, particularly the side flaps.

English patent application 2 115 594 describes a shaver that has an oscillating blade support portion that is attached along the sides of the single piece formed by the sides of the lid and the handle or handle. The blade support portion, when swinging through its arc, moves the blades forward to expose the blades when it is in its most counterclockwise position, and backward to protect the blades in their direction. clockwise position. Retention means are provided by a finger extending outwardly from the rear of the blade support portion and which is applied either in an adapted groove in the lid or in the lip of the lid which extends downwards. The first position provides a locking retainer that exposes the lamina2

nas, while the second position provides an immobilizer retainer to protect the blades. This centrally positioned finger tends to wear out during use and, consequently, the first immobilization position, ie the covered position, tends to produce an adjustment that loosens its firm positioning in its socket. On the other hand, the oscillation occurs as a result of the marriage of the portion of the separate blade, forming the configuration of the side of the cover-handle in one piece and precise internal measures are necessary so that the ears on the sides of the inserted platform fit into the grooves on the sides of said configuration in one piece. These relatively small ears can break with the force necessary for insertion.

U.S. Patent 4,464,835 describes a shaver with a movable lid, the lid being positioned by a central ramp retainer.

US patent 4 170 821, published on October 16, 1979, by Anthony R. Booth describes the addition of a shaving aid in the form of a lubricating agent, shaver cleaner, beard conditioner and medicinal, or similar , and its addition to a shaver. Both patents also describe a water-soluble lubricant, such as polyethylene oxide, which is leached from a microporous substrate applied as part of the cap.

Summary of the invention

According to the present invention, a razor is provided which has an immobilized position with the blades protected and an immobilized position with the blades exposed and which has a cover containing an additional element with a skin care component designed to be applied to the face during or after shaving. This is achieved by placing the skin care compound in contact with the skin when the shaver is in position with the blades exposed.

Brief description of the drawings

- 3 The present invention can be better understood by reference to the accompanying drawings, the figures of which represent:

Fig. 1, a side view of the shaver according to the present invention;

Fig. 2, a plan view of the support portion of the 1 year, in combination with the handle used for the shaver according to the present invention;

Fig. 3, an View in side with the sliding cover removed; Fig. 4, an View in sub-assembly plant represented sitting in fig. 5; Fig. 5, an View in cover front; Fig. 6, an View in under the cover; Fig. 7, a cut · cross section of the machine head second shave the present invention; and Fig. 8, an View in shaver plant

according to the present invention.

Detailed description of the present invention movable lid system illustrated and described below is similar to that shown in U.S. Patent 4,464,993 published on August 14, 1984, by Peter Bowlan and Allan S. Frieze and is preferred as an embodiment of a shaver with a configuration of exposed blades and covered blades, due to its simplicity and ease of manufacture. It should be understood that, for the purposes of the present invention, all prior art shavers that produce an immobilization configuration in positions of covered blades and exposed blades, such as those found in US patents 4 443, are usable. 938, 4 328 615 and English patent 2 113 594 «Also according to the present invention, a generally disposable razor is used as an applicator for a skin treatment component applied during shaving and / or an applicator for a skin care component to be applied after shaving.

As shown in fig. 1, a shaver (10) has a handle (18) that extends upwards so that it joins a shaver head that has a cover (20) and a portion (5; blade holder (5) see also Fig. 5) As can also be seen, with reference to Figs 1 and 8, a skin treatment component is present in the handle in contact with the skin, so that when the blades are exposed for shaving, the skin treatment component is in contact with the face.

The blade support portion (5), as shown in fig. 2, includes the circular support surface (7) extending upward and centrally located pins and pins (6) protruding from the surfaces (7). The studs (6) support the upper blade (11), the lower blade (13) and a spacer (12) and define special relations through grooves on the right side and on the left side of the upper blade (11). There are corresponding grooves in the lower blade (15) and holes with dimensions corresponding to the pins (6) are located in the spacer (12). The pins extend upwards from the bottom of the lower blade (13) which is wider than the upper blade (11), and corresponding through slots (not shown) in the spacer are positioned to fit with the slots ( 15) and (19) on the upper blade (11) (see figures 5 and 4).

As shown in fig. 2, the guard bar (17) is fixed to the base of the support portion of the blades by means of ribs (4) extending forward. The edge of the guard bar (17) forms an elevated area (see figures 2, 3 and 4) that protects the edge of the blade and also defines the stop on the front wall for the sliding movement of the cover. As can be seen better in fig. 3, the projection (8) which rises from the edge (16) provides the rear stop for sliding the cover.

As can be seen better in figs. 5, 6, 7, and 8, the lid (20) has sides (26) with two tabs (22) that extend to

- 5 inside involving the blade support set (5). The cover (20) is designed to move substantially linearly and reciprocally around the seat base and the blade subset. The backward extending lip (27) applies to the ramp portion (14) at the bottom of the ramp face (14a) extending downward to expose the blades (11) and (13) (see fig . 7). The cover has a series of armholes (25) that correspond to the pins (6) to provide clearance for movement.

When the rear part of the cover (27) is in the positions shown in dashed lines in fig. 7, it leans against the upper projection (14a), serving the upper face (14a) as a retainer for the lower lip (27) of the lid. The blade is exposed by exerting backward pressure against the lid and the sides of the lid which allows the rear portion (27) of the lid to rise up the upper face (14a) and the lower face (14b).

As can be seen better in figs. 7 and 8, a strip of material is placed on the top portion of the lid according to the present invention shown in these figures, the skin treatment component (30) being held in place by ribs (29) located in front and the wall (28 ) behind. The strip of the skin treatment component is prevented from sliding across the lid by the presence of fins (31). The wall (28) is used to prevent displacement by the shaving forces directed against the strip in the backward direction.

Examples of skin care components that are applied during shaving are polyethylene oxide, as described in the Booth patent, certain silicones and other lubricating agents. These lubricating agents provide a barrier between the blade and the face after the blade has made its initial pass to remove the shaving cream. People who shave invariably shave repeatedly in the same place to cut hair that remained during the initial pass when the face was covered with soap foam. The idea of presenting such a

lubricant barrier is described globally in the Booth patent. However, due to the possibility of using the razor according to the present invention as an applicator, the lubricant can be applied without the face being in direct contact with the blade. This allows the user to apply a secondary coating of lubricant before the next blade pass, as well as during blade movement. Other agents that can be added to the strip, either alone or in combination with lubricants, are bacteriostats or other antiseptics, tanning lotions containing, for example para-aminobenzoic acid, benzoyl 6-peroxide, after-shave lotions, emollients and cologne .

When using lubricants, such as polyethylene oxide or other additives that it may be desirable to add to the face during shaving, for example similar emollients or skin conditioners, the lubricating strip is placed as shown in fig. 8. In addition, since this use is designed to correlate with the repeated shaving inherent in current blade technology, a delay distribution feature is desirable, as described in English patent No. 427 184 to Gillette or in the Booth patent . (Both of these patents are hereby incorporated by reference). A preferred way of obtaining timed distribution is to soak these materials, which have to be soluble in water and which must be released, in a microporous strip, by processes such as those disclosed in US patents Nos. 3,075 P33 and 3,181,973. These patents describe the concept of leaching a water-soluble material, particularly polyethylene oxide, from a water-insoluble microporous matrix, such as an insoluble thermoplastic such as polystyrene. The combination of polyethylene oxide and polystyrene or another thermoplastic is formed either by extrusion of the polyethylene and thermoplastic oxide together or by injection molding them together to obtain the strip. The appropriate distribution levels for repeated shaving are obtained when the percentage of polyethylene oxide, by weight, is between 30 and 80% and, generally, between about 40 and 70% of the mixture with the thermoplastic.

A particularly preferred process for attaching the strip to the cap is by sequential molding, in which an injection-molded cap is formed, with an appropriate dug area, by means of a suitable mold portion, the covering portion is withdrawn and the adaptation strip is formed in its place in the mold generally fixed by appropriate grooves formed in the dug area which fits with corresponding adapted fastening means that extend downwards from the strip when the molding and location is verified. The cavity must provide a rear stop to resist the forces of shaving, as in the case of the structure in which the strip is added and fixed keeping it in place by the wall (28).

After the lid has been molded, a second molding step is carried out, generally at temperatures lower than the first molding step, using the lid as a substrate for the moldable mixture of thermoplastic and skin treatment component, for example polyethylene oxide. A second molding step is then carried out which models the mixture to form a solid that fits and fixes in the cavity and grooves in the lid formed during the first molding phase.

For the purposes of the present invention, the term "skin care component" is limited to compositions that are used during or after shaving. The definition also includes composition delivery systems, such as microporous or microencapsulated strips such as those described in the Booth patent. As the dispensing system is intended to be small, independent and compatible with the disposable razor manufacturer's process, the use of complex dispensing systems such as those required for shaving creams and foams is specifically excluded from the scope of this invention.

By using a dispensing system, for example water-insoluble microporous strips, the dispensing system can be shaped sequentially or attached to the lid and the disposable shaver can be manufactured with minimal cost increase. This is not possible when needed

- 8 it is necessary to add large volumes of material to the face, as is the case with the addition of shaving creams or foams.

It is particularly preferred that the strip is placed in such a way that it has a minimal action on the shaving geometry, when it is designed to contact the skin of the face, and therefore should be placed or with a cavity in the cover, so that only the surface is exposed, or the surface should be only slightly raised above the cover. This limits the size and capacity of the dispensing system and therefore eliminates the possibility of dispensing creams or foams in this way. It is also preferred that the plane of the strip is substantially that of the lid or, alternatively, that the rear portion be higher than the front portion. Ú course cue, due to the fact that the strip itself is insoluble in water, the shaving geometry will not vary with repeated use of the shaver.

Claims (1)

- 1® Razor that comprises at least one blade, a cover superimposed on said blade, a blade holder placed under the at least one blade, said cover, said blade and said holder being fixed to be operably connected each other between a first position in which the blade is exposed and a second position in which the blade is covered, characterized in that said cover includes a skin treatment component that is applied to the face when the system is in the exposed blade position . - 2® Razor according to claim 1, characterized in that the skin treatment component is facial lubricant. _ Already _ Shaver according to claim 1, characterized in that the skin treatment component contains polyethylene oxide. Shaver according to claim 1, characterized in that the skin treatment component is extracted by leaching an insoluble microporous support strip fixed to the said cover. Shaver according to claim 4, characterized in that said strip is held in place by means of appendages located along the periphery of said strip. _ 6 & _ Shaver according to claim 4, characterized in that the microporous strip is molded on the lid. - 73 Shaver according to claims 1 or 4, characterized in that the skin treatment component is at least one element chosen from the group consisting of emollients, astringents, antiseptics, acne treatment products, solutions containing sun creams and perfumed solutions. The applicant declares that the first application for this patent was filed in the United States of America on April 16, 1987, under Serial number 059,189.