Abstract: A diaphragm pump including a reciprocating piston engaging at opposite ends a pair of diaphragms which close opposite ends of a cylinder is disclosed. The piston ends engage the respective diaphragms across the entire dimension of the cylinder so that the membranes act as seals between the piston and the cylinder, thereby preventing unequal distortion of the diaphragm and enabling the pump to generate high pressure.

Abstract: A starter for a natural energy powered motor comprises, an electricity storage means connectable to be charged with electrical energy from a natural energy source, a voltage conversion means are provided to step up the charging voltage to the electricity storage means. An energy level sensor means is connected to the electricity storage means to sense a predetermined maximum charging level and to thereupon in use trigger discharge from the storage means of sufficient electrical energy to start to motor to be driven by electricity from the natural energy source in use.