|4981014||Atmospheric pressure power plant|
A shell having a closed upper end and an open lower end, and a weight in the form of a piston sealingly slidable in the shell. In one form partial vacuum is produced in the shell above the weight and atmospheric pressure consequently raises the weight. In...
|4081056||Drive means for moving a target figure intended for sports shooting|
The present invention concerns a drive means for moving a target figure for use in sports shooting, comprising a frame, a pulley and a power wheel mounted on support of the frame, a power shaft connected with the power wheel, an endless pulling rope, whic...