Abstract:
The present invention relates to a lash brush that allows for adjustment of the arrangement of bristles formed on a bristle sleeve of the lash brush according to practical needs and enhances the operation of lash make-up. A bristle bar assembly includes an inner bar that is retained in an end cap by a rim member defining guide slots and an outer tube fit over and encompassing the inner bar. A front end of a bristle sleeve is coupled to an end of the outer tube and an end of the inner bar is inserted into and fixed to an inner end of the bristle sleeve. In use, through withdrawing and rotating the cap, the inner bar rotates the end of the bristle sleeve, causing twisting of a bristle tip surface formed by tips of bristles and thus realizing adjustment of the arrangement of the bristles.

Description:
(a) TECHNICAL FIELD OF THE INVENTION 
       [0001]    The present invention generally relates to a lash brush with adjustable bristle arrangement, which comprises a bristle bar assembly composed of an inner bar and an outer tube fit to each other, wherein the inner bar is inserted into and fixed to an inner recessed bottom of a cap by a rim member and is externally fit over and encompassed by the outer tube in such a way that a front end of a bristle sleeve that functions for brushing and making up lashes is coupled to the outer tube and the inner bar is directly inserted into and reaching an inner end of the bristle sleeve for fixing thereto so that the two ends of the bristle sleeve are respectively fixed to the inner bar and outer tube, whereby in use, through withdrawing and rotating the cap, the inner bar simultaneously rotates the end of the bristle sleeve, causing twisting of a bristle tip surface formed by tips of bristles arranged on the sleeve and thus realizing adjustment of the arrangement of the bristles, which may effectively provide a practical efficacy of more densely re-arranging the bristle tip surface, so that the effectiveness and efficiency of make-up operation can be enhanced in coating lash make-up liquid to the brush and performing brushing operation. 
       (b) DESCRIPTION OF THE PRIOR ART 
       [0002]    A conventional lash brush is structured as shown in  FIG. 7  that shows a complete set of lash brush, wherein a cap  31  for covering purpose is provided also for hand gripping in doing lash make-up. In an intermediate section, a brush bar  32  extends outward and has an end that has a suitable length on which bristles are arranged to form a curved surface  33  of outer contour of tips of the bristles. These together form a lash brush structure. A lash make-up liquid container  34  has a closable opening in which a plug having liquid scraping tabs is mounted. The lash brush is directly inserted into the lash make-up liquid container  34  to have the bristle tip surface  33  and the brush bar  32  simultaneously dipped into the make-up liquid contained in the container and this forms a complete lash brush container structure. To carry out make-up, after the bristle tip surface  33  is coated with the lash make-up liquid in the container, the brush bar  32  is withdrawn in such a way to allow excessive make-up liquid to be scraped off, and then the bristle tip surface  33  is positioned in alignment with eye lashes to apply a proper amount of the make-up liquid to the lashes. In the operation, the lash make-up liquid is applied to the lashes several times in an up-and-down manner. Since the bristles constituting the bristle tip surface  33  are arranged in a fixed manner, to meet the needs for making up the lashes in a curled manner, the bristle tip surface  33  must be rotated and changed properly in order to obtain the result of uniform application of the make-up liquid. This relies upon experienced skills and takes a lot of time. Particularly, the brush tip surface  33  must be hand held to carry out both application and rotation at the same time. When the make-up liquid is not uniformly coated on the bristles, a non-experienced operator or user cannot do the make-up in a uniform manner. This is particularly true for making up curled lashes. This makes great trouble and inconvenience to the general users. Thus, if the arrangement of the bristle tip surface of the currently available lash brush can be modified according to the practical needs for make-up operations to make it an arrangement that allows for being more densely attached with a make-up liquid, then the use for make-up operation of the lash brush can be more easily operated. In this respect, the existing lash brush must be further improved. 
       SUMMARY OF THE INVENTION 
       [0003]    The present invention provides a lash brush with adjustable bristle arrangement, in which a bristle carrying bar assembly is inserted into and fixed to an inner recessed bottom of a cap by a rim member and the bristle carrying bar assembly is composed of mutually fit inner bar and outer tube, wherein an end of the inner bar extends outward to couple to an end of a bristle sleeve, whereby by withdrawal and rotation of the cap, the bristle sleeve is twisted and deformed to provide convenient assistance to carry out various make-up operations in doing lash make-up so as to alleviate the drawbacks of the conventional lash brush in respect of non-uniform application of make-up liquid to the eye lashes. 
         [0004]    The primary object of the present invention is to provide lash brush, wherein an inner bar is directly fit into and fixed to an inner end of a bristle sleeve and an outer tube is coupled to an insertion end of the bristle sleeve and wherein through withdrawal and rotation of a cap that carries the inner bar, the inner end of the bristle sleeve is rotated with the inner bar and the cap to simultaneously twist the bristles, making the bristles re-arranged in a denser form, so that in doing lash make-up, the make-up liquid can be attached to the bristles and subsequently applied to lashes in a more reliable and effective manner, and the bristles are allowed to be modified in various ways to make the make-up of lashes carried in a uniform, easy, and conformable manner. 
         [0005]    The foregoing objectives and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts. 
         [0006]    Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0007]      FIG. 1  is an exploded view of a lash brush according to the present invention. 
           [0008]      FIG. 2  is a perspective view of the lash brush of the present invention, which is shown separated from a make-up liquid container. 
           [0009]      FIG. 3  is a cross-sectional view of the lash brush of the present invention. 
           [0010]      FIG. 4  is a developed view of a rim member of the lash brush of the present invention, showing the structure of circumferential guide slots formed therein. 
           [0011]      FIG. 5  is a perspective view showing arrangement of bristles of the lash brush of the present invention before being twisted. 
           [0012]      FIG. 6  is a perspective view showing the arrangement of the bristles of the lash brush of the present invention after being twisted. 
           [0013]      FIG. 7  is a perspective view of a conventional lash brush, which is shown separated from a make-up liquid container. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0014]    The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims. 
         [0015]    The present invention provides a lash brush with an adjustable bristle arrangement. As shown in  FIGS. 1-6 , the lash brush according to the present invention comprises a twisting structure for bristles that are arranged to have tips thereof forming an outer contour that defines bristle tip surface. The lash brush comprises an end cap  10  for hand holding to carry out make-up operations. The cap, which is a hollow member, receives and retains therein an inner bar  11  that has an expanded cylindrical plug end fit into the cap to allow the bar to extend out of the cap. A bottom of the plug is set nearly on an inner bottom surface of the cap. The cylindrical plug has an outer circumference forming a roughened surface to securely couple to the cap. The cap, which has an inside surface to which the cylindrical plug is fit, forms opposite positioning bosses  12  on the inside surface thereof at a location close to an open end of the cap. A rim member  13  is fit into the open end of the cap to seat against the expanded cylindrical bottom of the inner bar  11  and thus provides assistance to position the inner bar  11  inside the cap in such a way to allow an elongate bar body of the inner bar to extend beyond an outer circumference of the cap by a desired length. An outer tube  14  is inserted into the rim member  14  in such a way to encompass an outer circumference of the inner bar  11  with a lower end of the outer tube  14  seating against an inner recess of the rim member  13  to provide assistance to position the rim member  13 . The rim member  13  has a circumferential surface in which rail-like circumferential guide slots  15  for purposes of positioning and guiding of sliding motion are defined and the circumferential guide slots are of a predetermined length, such as a length that allows for a rotation within 150 degrees, for rotation and guiding of the cap  10 . Each of the slots is provided, in a side wall thereof, with a plurality of raised and recessed arc surfaces that are formed in an equally spaced manner and a retention notch  16 . To use, a user holds the outer circumference of the cap  10  with one hand and holds an exposed circumferential portion of the rim member  13  with another hand and then withdraw the cap backward and rotate the cap by a desired angle, which is preferably between 0-150 degrees, depending upon the length determined by the circumferential guide slots  15  of the rim member  13 . A free end of the outer tube  14  is fit and coupled to an insertion end of a bristle sleeve  17 , and the inner bar  11  has a distal end that is inserted into the bristle sleeve  17  to reach an inner end of the bristle sleeve and fixed to the inner end of the bristle sleeve. Through inter-engagement between the cap  10  and a container  20  that is filled with a lash make-up liquid, the lash brush so assembled is inserted through a hollow inner plug  21  that is provided with liquid scraping tab and is mounted inside the container opening to allow the lash brush and the bristle sleeve  17  mounted to a tip thereof to penetrate into and dip in the make-up liquid contained in the container, whereby the outer tube  14  and the bristle tip surface of the bristles carried on the bristle sleeve  17  can be simultaneously coated with the make-up liquid and thus, when the cap  10  is rotated to release from the container, make-up operation for lashes can be carried out immediately. 
         [0016]    In the improved design of the lash brush according to the present invention, a major feature is the arrangement of lash brush bristle can be adjusted in performing make-up operations of the eye lashes according to the needs of the lash make-up in order to satisfy the need for attaching the make-up liquid to the bristles and to make uniform application of the liquid to the eye lashes, whereby through proper adjustment of the distribution of bristles that form the bristle tip surface, the density and arrangement of bristles can be changed. In attempting to perform make-up, a user simply holds the cap  10  and partly separates the cap from the rim member  13 , whereby the positioning bosses  12  that are formed on the inside surface of the cap  10  are caused to disengage from the retention notches  16  and are thus allowed to rotate, namely circumferentially moved along the circumferential guide slots  15  defined in the circumferential wall of the rim member  13 . Through the engagement with the raised and recessed arc surfaces and the retention notches  16 , when the cap is withdrawn and rotated, the inner bar  11  is caused to rotate to simultaneously rotate the bristle sleeve  17  coupled to the end thereof. Due to the insertion end of the bristle sleeve being fixed to the outer tube  14 , when the bristle sleeve is rotated with the inner bar  11 , the bristle sleeve  17  is twisted and the bristles set on the circumferential surface of the bristle sleeve  17  will be twisted and the arrangement thereof be adjusted, whereby in performing lash make-up operation, the arrangement of the bristles shows a denser distribution due to the twisted arrangement thereof, which facilitates attaching of the make-up liquid to the bristles and the performance of lash make-up during the make-up operation. Through control by rotation of the cap  10 , the inner bar  11  can be rotated by different angle within the guide slots  15 , which leads to different re-arrangements of the bristles to allow the bristle tip surface to be changed for use in different applications of special curling and uniform application of make-up liquid to the eye lashes, whereby the lash brush is made more suitable for the need of uniform make-up operation. In respect of bristle arrangement of an eye lash brush, the present invention provides improved performance over the commercial products of the same functions. 
         [0017]    The present invention provides a lash brush that has a bristle arrangement that can be adjusted by setting different rotation angle, wherein a bristle carrying bar is constructed as a rotatable combination of an inner bar and an outer tube, whereby the inner bar  11  is rotatable in unison with the cap  10  to simultaneously rotate a distal tip end of the bristle sleeve  17  attached to the inner bar  11  and due to an end of the bristle sleeve  17  being coupled to the outer tube  14 , the rotation of the distal tip end of the bristle sleeve by the inner bar  11  makes the bristle tip surface of the bristles twisted, which causes simultaneous twisting of the bristles to realize adjustment of the arrangement of the bristles. In use, according the needs of practical applications of lash make-up, due to guidance provided by the circumferential guide slots  15  formed in the circumferential wall of the rim member  13  and assisted by the retention provided by the raised and recessed arc surfaces and the retention notches  16 , the lash brush can be selectively rotated and re-positioned for different applications of lash make-up. After the use, the brush is re-inserted into the container  20 , the cap is depressed and rotated reversely, the cap is returned to the original non-twisted position, which ensures the bristle tip surface will return to the original non-twisted position and the bristles resume a non-twisted distribution, which can be for example lined up in straight lines. Securely locking the cap and maintaining the flexibility of rotating the bristles can be ensured in this way. The whole structure of adjusting bristles is simple and a practical function of easy positioning is also offered. Without any special operation skill, the bristles can be easily adjusted and changed to meet the needs of various application of lash make-up. This is not only good for facilitating adjustment and change in performing lash make-up, but also effective in uniform application of the make-up liquid attached to the bristles, especially for curling make-up of eye lashes. The make-up liquid attached to the bristles can be conducted to differently twisted tips of the bristles to continuous application so as to ensure uniform make-up. Quality of lash make-up can thus be enhanced and the lash brush is made more suitable to the convenient use for make-up operation of lashes. 
         [0018]    To summarize, the present invention provides a lash brush with adjustable bristle arrangement, which comprises a bristle sleeve having a bristle tip surface that, through a structure of rotatable combination of an inner bar and an outer tube, has an end coupled to the inner bar and an opposite end coupled to the outer tube, whereby through the rotatabilty of an end cap guided by a rim member set inside the end cap, the arrangement of the bristles of the bristle tip surface is adjusted. This provides easy adjustment operation in performing make-up operation and also provides a practical efficacy in lash make-up. In view of the structure and the simplification of lash make-up, the present invention is a novel design of lash brush. 
         [0019]    While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention.