High temperature, high pressure apparatus having a ductile driver element

Abstract From the Canadian patent

A high pressure high temperature, piston-cylinder type apparatus utilizing a soft, ductile, electrically conductive material as a driver element to transmit pressure from the piston to a charge in the cylinder. The driver element preferably made of lead, or the like, is placed in the pressure cylinder between an advanceable piston and a stationary sleeve of insulating material surrounding an electrically heatable core of charge material. As the piston is advanced, the lead driver element deforms into the end of the sleeve of insulating material and maintains pressure on the core without deformation of the sleeve of insulating material.