Patent Publication Number: US-7896777-B2

Title: Multi-dimensional arm and wrist training device capable of changing weight

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a training device and more particularly, to a multi-dimensional arm and wrist training device capable of changing weight. 
     2. Description of the Related Art 
     In weight training, dumbbells are the most common devices to train muscles. Typically, the conventional dumbbell has a bar and two iron blocks on opposite ends of the bar. User holds the bar for various arm and wrist exercises, such as flexion, extension, pronation, and supination. Basically, the every exercise trains the specific muscle, such as elbow&#39;s flexion trains bicep. 
     However, the dumbbell&#39;s training only trains one or a few muscle in a single exercise. It can not provide a total exercise of arm and wrist. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide a multi-dimensional arm and wrist training device, which may train more muscles in a single exercise. 
     To achieve the objective of the present invention, a multi-dimensional training device includes a connection member, a first turning member connected to the connection member, a first handle pivoted on the first turning member, a second turning member pivoted on the connection member, and a second handle pivoted on the second turning member. User may hold the first and second handles to turn or move the training device of the present invention for training more muscles and joints. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING 
         FIG. 1  is a perspective of a first preferred embodiment of the present invention; 
         FIG. 2  is an exploded view of the first preferred embodiment of the present invention; 
         FIG. 3  is a top view of the first preferred embodiment of the present invention; 
         FIG. 4  is a top view of the first preferred embodiment of the present invention, showing the second turning member rotating; 
         FIG. 5  is a perspective view of the first preferred embodiment of the present invention, showing no weight member on the connection member; 
         FIG. 6  is a perspective view of the first preferred embodiment of the present invention, showing only one weight member on the connection member; and 
         FIG. 7  is a top view of a second preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Referring to  FIGS. 1 to 3 , a multi-dimensional training device  1  of the first preferred embodiment of the present invention includes a connection member  10 , a first turning member  20 , a second turning member  30 , a first handle  40 , and a second handle  50 . 
     The connection member  10  is a straight bar, on which weight members  11  are mounted. The first turning member  20  is an L-shaped plate, which is defined as a first section  21  and a second section  22 . The first section  21  of the first turning member  20  is fixed to an end of the connection member  10  by a bolt. Same as the first turning member  20 , the second turning member  30  is an L-shaped plate also, and is defined as a first section  31  and a second section  32 . A bolt  33  is inserted through the first section  31  of the second turning member  30  and is screwed into the other end of the connection member  10 . Thrust bearings  34  are fitted to the bolt  33  on opposite sides of the first section  31  that the second turning member is free for rotation relative to the connection member  10 . The first handle  40  has a bar  41  and a U-shaped frame  42 . The frame  42  of the first handle  40  is connected to the second section  22  of the first turning member  20  by a bolt  43  and nut  45 . Thrust bearing  44  are fitted to the bolt  43  on opposite sides of the second section  22  that the first handle  40  is free for rotation relative to the first turning member  20 . Same as above, the second handle  50  has a bar  51  and a U-shaped frame  52 . The frame  52  of the second handle  50  is connected to the second section  32  of the second turning member  30  by a bolt  53  and nut  55 . Thrust bearing  54  are fitted to the bolt  53  on opposite sides of the second section  32  that the second handle  50  is free for rotation relative to the second turning member  30 . 
     To change weight of the training device  1  of the present invention, one may loose the nut  33  to take off the second turning member  30  that it may fit weight members  11  to the connection member  10  or take the weight member  11  off from the connection member  10 . To avoid movements of the weight member  11  on the connection member  10 , it may provide cushion members  12  between the weight members  11 . The cushion members  12  are rubber or foamed rings fitted to the connection member  10 . 
     To take exercise by the training device  1  of the present invention, user may hold the first and second handles  40 ,  50  to turn or move the training device  1  of the present invention freely. Except for the common dumbbell training, the training device  1  of the present invention may provide various limb and joint exercises including wrist, forearm, upper arm, elbow, and shoulder. Much more muscles may be trained by the training device  1  of the present invention. The thrust bearings  34 ,  44 ,  54  may be replaced by pads or washers that it may provides resistance in turning of the handles  40 ,  50  and the second turning member  30 . The resistance may be adjusted by turn tight or loose the bolt  33 ,  43 ,  53 . 
     User may increase or decrease the weight members  11  on the connection member  10 .  FIG. 5  shows no weight member on the connection member  10 .  FIG. 6  shows only one weight member  11  and two cushion members  12  on the connection member  10  that the weight member  11  and the cushion members  12  may slid along the connection member  10  in exercise. 
     The characters and advantages of the present invention are: 
     1. The weight members are between the handles. Compare to the dumbbell having the weight member on opposite ends, the present invention may have a better balance in exercise. Besides, the present invention has no extruded bars on opposite ends that provides a better completeness. 
     2. The connection member  10  is the common rotation axis of the first turning member  20  and the second turning member  30  that the second turning member  30  may turn to the opposite side relative to the first turning member  20 . It provides more ranges of motion to training muscles and joints. 
     3. Rotations of the first handle  40  and second handle  50  are orthogonal to the first turning member  20  and the second turning member  30  respectively. It may exercise more muscles and joints. 
       FIG. 7  shows a training device  2  of the second preferred embodiment of the present invention. The training device  2  includes a connection member  61 , a first turning member  62 , a second turning member  63 , a first handle  64 , and a second handle  65 . The different part of the second preferred embodiment is that both of the first turning member  62  and second turning member  63  are pivoted on the connection member  61 . In other words, the first turning member  62  and second turning member  63  are independently rotatable relative to the connection member  61 . The functions and advantages of the second preferred embodiment are as same as the first preferred embodiment. 
     Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.