Forearm, wrist and hand strengthener

Abstract

An apparatus comprises: a first cylindrical handle rotatable about a first cylindrical axis; a second cylindrical handle rotatable about a second cylindrical axis disposed such that the first handle and the second handle form an angle of less than 180 degrees; and a resistance adjuster operable to adjust a rotational resistance of the first handle about the first cylindrical axis and the second handle about the second cylindrical axis.

1 . An apparatus comprising:
 a first cylindrical handle rotatable about a first cylindrical axis;   a second cylindrical handle rotatable about a second cylindrical axis disposed such that the first handle and the second handle form an angle of less than 180 degrees; and   a resistance adjuster operable to adjust a rotational resistance of the first handle about the first cylindrical axis and the second handle about the second cylindrical axis.   
     
     
         2 . The apparatus of  claim 1 , further comprising:
 a housing that connects the first cylindrical handle and the second cylindrical handle and encloses a portion of the first cylindrical handle, a portion of the second cylindrical handle, and a portion of the resistance adjuster.   
     
     
         3 . The apparatus of  claim 2 , wherein the resistance adjuster further comprises:
 a tension handle rotatable in a first direction to increase rotational resistance of the first handle about the first cylindrical axis and the second handle about the second cylindrical axis and further rotatable in a second direction opposite of the first direction to decrease rotational resistance of the first handle about the first cylindrical axis and the second handle about the second cylindrical axis.   
     
     
         4 . The apparatus of  claim 3 , wherein the tension adjuster further comprises:
 a first friction block that contacts at a first side and exerts pressure on a portion of the first cylindrical handle; and   a second friction block that contacts at a second side and exerts pressure on a portion of the second cylindrical handle;   wherein the first side of the first friction block and the second side of the second friction block are concave in shape to accommodate the first cylindrical handle and the second cylindrical handle;   wherein the tension handle, when rotated in the first direction, causes the first friction block to increase the pressure exerted on the portion of the first cylindrical handle and causes the second friction block to increase the pressure exerted on the portion of the second cylindrical handle; and   wherein the tension handle, when rotated in the second direction, causes the first friction block to decrease the pressure exerted on the portion of the first cylindrical handle and causes the second friction block to decrease the pressure exerted on the portion of the second cylindrical handle.   
     
     
         5 . The apparatus of  claim 4 , wherein the tension adjuster further comprises:
 a tension block, disposed between the first friction block and the second friction block, that contacts and exerts a pressure on a portion of the first friction block and a portion of the second friction block;   wherein the tension handle, when rotated in the first direction, causes the tension block to increase the pressure exerted on the portion of the first friction block and the portion of the second friction block; and   wherein the tension handle, when rotated in the second direction, causes the tension block to decrease the pressure exerted on the portion of the first friction block and the portion of the second friction block.   
     
     
         6 . The apparatus of  claim 5 , wherein the tension block applies equal pressure to the first friction block and the second friction block. 
     
     
         7 . The apparatus of  claim 5 , wherein the tension adjuster further comprises:
 a threaded cylindrical rod connected to the tension handle that, when the tension handle is rotated in the first direction, moves towards to the tension block and that, when the tension handle is rotated in the second direction, moves away from the tension block.   
     
     
         8 . The apparatus of  claim 7 , wherein the tension adjuster further comprises:
 a tension spring wrapped around a portion of the threaded cylindrical rod and pressed against the tension block;   wherein the tension handle, when rotated in the first direction, causes the tension spring to increase pressure exerted on tension block; and   wherein the tension handle, when rotated in the second direction, causes the tension spring to decrease pressure exerted on the tension block.   
     
     
         9 . The apparatus of  claim 7 , wherein the housing further comprises:
 a flange weld nut situated at an opening of the housing, through which the threaded cylindrical rod threads so that a portion of the threaded cylindrical rod enters the housing.   
     
     
         10 . The apparatus of  claim 1 , wherein the angle of less than 180 degrees comprises an angle of approximately 90 degrees.