Novel device for fastening perforated cylindrical sleeves to handles of radial hairbrushes

Abstract: A novel device for fastening perforated cylindrical sleeves to handles of radial hairbrushes, consisting of a hole formed in the head of the handle carrying the radial brush and coincides, in position and shape, with a second hole formed in the vicinity of the lower opening of the circular sleeve with perforated walls which is fitted on the head of the handle for holding the brush and, when both holes are in coinciding positions, the blunt tip of the body of the resilient fastening element is fitted with pressure in the holes, the fastening element having a 90° peripheral projection which forms a step and the wall of the rim of which is extended in an inclined manner towards the tip of the fastening element, the edges of the holes being gripped with pressure between the step referred to and a second step existing in the same body, the two steps being spaced apart.

Description: The present invention relates to a novel device for fastening perforated cylindrical sleeves to handles of radial hairbrushes. At the moment, in brushes of this type, the perforated sleeve is attached permanently to the head of the end of the radial brush handle by nailing, as known from DE 22544753. This practical arrangement is suitable when the brush is new or has not been in use for very long. Later, due to the acids and other chemical products which are used on the hair, to heat, and to the adverse effects of pulling during use on the hair, this nailing deteriorates and becomes detached from the head, and the desired connection of the perforated sleeve to the head of the handle of the radial brush is lost. The subject of the invention has been designed to solve this problem. For a correct understanding of the invention, two sheets of drawings are appended, in which: Figure 1 shows a portion of the head of the handle and a portion of the perforated sleeve, both in section, with the fastening element already connected to these elements, and a fastening element, separated and in line, before its insertion. Figure 2 is a detail of a variant of the fastening element, which does not modify the essence of the invention, viewed in elevation, at 90°, and in plan. In Figure 3, the fastening element itself is seen in perspective and in line with the holes in the head of the brush handle and in the perforated sleeve of the brush itself, both of which are shortened. In Figure 4, as in Figure 1, the fastening element is disposed in the holes in the sleeve and in the head, both of which are sectioned for better interpretation. The invention consists of the fact that a hole (3) is formed in the circular head (1) of the handle (2) carrying the radial brush, the hole (3) coinciding, in position and shape, with a second hole (4) formed in the vicinity of the lower opening of the circular sleeve (5), which has a perforated wall and which is fitted with pressure on the head (1) of the handle (2) for holding the brush and, when both holes are in coinciding positions, the blunt tip of the resilient fastening device (6) is inserted with pressure and extends across the edges of the holes (3 and 4), the said device having a 90° peripheral projection (7) which forms a step and the wall of the rim of which is extended in an inclined manner towards the tip of the fastening element so that the rim of the step (7) is engaged, under pressure and by expansion, with the edges of the holes (3 and 4), and the edges of the holes are gripped between the step (7) and a second step (8). When it is necessary to achieve a greater contraction and expansion of the body of the fixing element (6), the body has a deep, perpendicular, blind slot (9). The desired attachment of the perforated sleeve to the head of the handle is thus achieved, and the sleeve is prevented from rotating about its own axis and from moving axially, thus eliminating the need for the application of glues or other additives which deteriorate in the known attachment with the heat, the humidity, and the pulling to which radial brushes with perforated sleeves are subjected during their use. It should be understood that, within the present invention, all details of construction and finishing may be varied, provided that the essence of the invention is not altered, changed or modified.

Claims: Device to fasten perforated cylindrical sleeves (5) to handles (2) of radial hairbrushes, characterized in that a resilient fastening element (6) extends through both of the corresponding holes (3 and 4) provided one on the head (1) of the handle (2) for gripping the radial hairbrush and one on the perforated cylindrical sleeve (5) that is fitted into said head (1); said resilient fastening element (6) having projections in the form of steps (7) and (8) spaced therefrom, said head (1) and said perforated cylindrical sleeve (5) being retained between said steps (7 and 8). Device for fastening cylindrical perforated sleeves (5) to handles (2) of radial hairbrushes according to the preceding claim, characterized in that when, owing to assembly requirements, the body of the resilient fastening element (6) has to be extended, a deep, perpendicular, central notch (9) is formed therein.

Inventors: PEREZ CODINA CARMEN, PEREZ CODINA, CARMEN, Pérez Codina, Carmen
Applicants: ORIOL IND, INDUSTRIAS ORIOL S.A.
Application year: 1999
Main classification: A46B7
IPC codes: A46B7