Patent ID: 9017234
Filing Date: 2015-04-28
Classification: A63B

Abstract:
1. An upper body reciprocating exerciser, comprising: a frame having a post; a transmission unit connected to the post and having a cam which is a disk cam, a guide slot defined in one face of the cam and a passive member located in the guide slot, the passive member connected with a first end of a piston rod, a piston connected to a second end of the piston rod, a shaft extending through the cam and connected to the post; a resistance unit connected to the post of the frame and having a cylinder which has a space defined therein, the piston and the piston rod located in the space, the piston dividing the space into a top room and a bottom room, an enclosed loop pipe connected to outside of the cylinder, a top pipe connected between a top portion of the loop pipe and the top room of the cylinder, a bottom pipe connected between a lower portion of the loop pipe and the bottom room of the cylinder, the loop pipe having a down-flow section and an up-flow section, each of the down-flow section and the up-flow section having a check valve and an adjustable control valve, the check valve in the down-flow section and the check valve in the up-flow section being installed in opposite directions, water being filled in the space of the cylinder, and a pull unit having a socket which is connected to an end of the shaft, the socket having a bar connected thereto, two handles connected to two ends of the bar.