Pneumatic exercise device

A portable, stand-alone, pneumatic exercise device comprising:

• a closed double-acting pneumatic cylinder having first and second ends, the cylinder enclosing a moveable piston element;
• a first and second operating chambers positioned within the cylinder on opposite sides of the piston element;
• a suction cup for mounting the exercise device to a surface external to the exercise device;
• a pivotal connection means for pivotally connecting the suction cup and the pneumatic cylinder;
• a shaft connected to the piston and extending through a sealed end wall on the second end of the double-acting pneumatic cylinder;
• a pneumatic line located outside the double-acting pneumatic cylinder and interconnecting the first chamber and the second chamber to allow air to flow between the first and second chambers;
• a first valve means for adjusting the rate of flow in the pneumatic line in one direction;
• a second valve means for selectably adjusting the rate of flow in the pneumatic line in the opposite direction;
• a gauge means located between the two valve means to indicate pressure in the line;
• and
• a quick coupling fitting connected to the end of the shaft opposite the piston;
• an exerciser engaging means for connecting to the quick coupling fitting to enable a user to push and pull the piston as well as move the second end of the cylinder pivotally with respect to the suction cup whereby a user can exercise selected muscle groups.