Patent ID: 6364816
Filing Date: 2002-04-02
Classification: A63B

Abstract:
An arm-building device comprising:a frame having a coupling portion at a bottom thereof; two engagement members rotatable mounted on the frame and meshed with each other, said engagement members provided with a connection portion and a pivoting portion spaced apart from an axis of said engagement member by a predetermined distance; two operation rods rotatable engaged respectively at a first end with said connection portion of each of said engagement members and provided at a second end with a grip, wherein said operation rods can actuate said two engagement members to turn; two traction members rotatably engaged respectively at a first end with said pivoting portion of each of said engagement members and a second end of each of said traction members rotatably engaged together by a bolt; and at least one resilient member, which is fastened at a first end with said coupling portion of said frame, and at a second end with said bolt; wherein when said two engagement members are actuated to turn by said two operation rods said traction members are actuated to displace upward to stretch said resilient member and effect a resistance force against turning said operation rods.