Patent Publication Number: US-2020282260-A1

Title: Fitness hand-muscle developer

Description:
BACKGROUND OF INVENTION 
     1. Field of the Invention 
     The present invention relates generally to a hand-muscle developer, and more particularly to a fitness hand-muscle developer for exercising the muscles of fingers and arms and mobilizing the finger joints and palm joints. 
     2. Description of Related Art 
     In order to exercise the muscles of fingers, palms and arms and to mobilize the joints thereof, somebody developed the hand-muscle developer.  FIG. 1  shows the conventional hand-muscle developer  1 , comprising two hand grips  11  and a coil-like spring  12  connecting the hand grips  11 . 
     The conventional hand-muscle developer  1  is designed for young people, its spring  12  has very strong elastic force. In order to avoid elastic fatigue of spring  12  after a period of time, the designers often design a high predetermined elasticity of spring  12 , so that the conventional hand-muscle developer  1  is unsuitable for the elderly, the weakling and women. 
     However, the elderly and the weakling have degenerated somatic function, they need exercises to keep them healthy. The women are unwilling to exercise, so it is necessary to design appropriate fitness equipments for them. 
     In addition, the spring  12  of conventional hand-muscle developer  1  is made of metals, the cost is high, and the conventional hand-muscle developer  1  only exercises hand muscles, it has no other uses. 
     SUMMARY OF THE INVENTION 
     The purpose of the present invention is to provide a fitness hand-muscle developer, its elasticity is fit for the elderly and the weakling, or the women exercise moderately and voluntarily according to the strength of hand muscles, and it is portable for exercises at any time. 
     In order to solve the above problems, the technical scheme of the present invention is described below: 
     A fitness hand-muscle developer, comprising: a main body, elastic, rod-like, defining a lengthwise direction; a band, with two opposite free ends, two free ends being fixed to the main body in the lengthwise direction of the main body; and a holding space, located between the band and the surface of the main body. 
     More particularly, the main body comprises a surface layer and an interior layer, the surface layer fully or partially covers the interior layer. 
     More particularly, the surface layer and interior layer are made of different materials. 
     More particularly, the surface layer and interior layer are formed in one. 
     More particularly, the transverse section profile of the main body is a circle, a polygon or other geometric shapes. 
     More particularly, the main body is made of fabrics, plastics, rubber, silica gel, polymers or other elastic materials. 
     More particularly, the surface layer is rubber, the interior layer is silica gel. 
     More particularly, the band is made of fabrics, plastics, rubber, silica gel, polymers or other elastic materials. 
     More particularly, the band is fixed to the main body by stitching, gluing, heat fusion or fixing components. 
     Furthermore, the fitness hand-muscle developer of the present invention has a low cost, and it can be used for massage or flapping. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows the conventional hand-muscle developer; 
         FIG. 2  is the stereogram of fitness hand-muscle developer of the present invention; 
         FIG. 3  is the front view of  FIG. 2 ; 
         FIG. 4  is the side view of  FIG. 2 ; 
         FIG. 5  is the sectional view of A-A line from  FIG. 4 ; 
         FIG. 6  shows the operating conditions of the fitness hand-muscle developer of the present invention, the fingers have cut in between the band and main body, but no force applied; 
         FIG. 7  shows the operating conditions of the fitness hand-muscle developer of the present invention, the fingers have cut in between the band and main body, applying a force to compress the fitness hand-muscle developer. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Described below according to figures. 
     As shown in  FIGS. 2-4 , the fitness hand-muscle developer  2  of the present invention comprises a main body  21 , a band  22  fixed to main body  21  and a holding space  23  defined by band  22  and main body  21 . 
     The main body  21  appears as a rod, its transverse section profile is a circle, a polygon or other geometric shapes. In  FIG. 2 , the transverse section profile of main body is circular. 
     The main body  21  can be made of fabrics, plastics, rubber, silica gel, polymers or other elastic materials. 
     The main body  21  can be all made of one material or more than two materials. For example, main body  21  comprises a surface layer  211  and an interior layer  212 . The surface layer  211  defines an inner space for holding the interior layer  212 . The surface layer  211  covers the interior layer  212  completely, and it can cover the interior layer  212  partially. In the example, the surface layer  211  is rubber, the interior layer  212  is silica gel, there are excellent elastic compression and recovery effect in practice. 
     The band  22  is made of fabrics, plastics, rubber, silica gel, polymers or other elastic materials. 
     The band  22  and main body  21  can be formed in one, or manufactured respectively and then fixed to each other. The band  22  has two opposite free ends, fixed to the main body  21  in the longitudinal direction of rod-like main body  21 . The two opposite free ends are fixed to the surface of main body  21 , and can be inserted in the main body  21  before they are fixed, so as to define the holding space  23  between band  22  and main body  21 . The aforementioned band  22  can be fixed to the main body  21  by stitching, gluing, heat fusion or fixing components. 
     In terms of usage mode, as shown in  FIG. 2  and  FIG. 6 , the user can put the index finger, middle finger, ring finger and little finger in the holding space  23  of fitness hand-muscle developer  2 , the palm surrounds the main body  21 , and the thumb is put on the surface of main body  21 . Afterwards as shown in  FIG. 7 , the five fingers and palm bend towards the center of the palm, so as to compress the main body  21  of fitness hand-muscle developer  2 , and then the five fingers and palm stretch outwards and relax, the main body  21  of fitness hand-muscle developer  2  expands due to its elasticity and recovers the shape before compression. The muscles of fingers and arms can be exercised and the finger joints and palm joints can be mobilized by the repeated motion. 
     Similarly, the user can put the thumb in the holding space  23  of fitness hand-muscle developer  2 , the palm surrounds the main body, and the index finger, middle finger, ring finger and little finger are put on the surface of main body  21 . Afterwards, the five fingers and palm press towards the center of the palm forcibly, and then stretch outwards and relax. 
     On the other hand, the user can place the fitness hand-muscle developer  2  on the surface of a hard object, e.g. table top, and then the palm is put on the main body  21  of fitness hand-muscle developer  2 , kneading the object surface back and forth to roll the fitness hand-muscle developer  21 , so as to massage the skin and muscles of hand. 
     In another method of application, the user holds one end of main body  21  of fitness hand-muscle developer  2  with one hand, and uses the other end of main body  21  to flap body parts.