Radioactive battery with solid dielectric spacers and method of manufacture

Claim 1

A RADIOACTIVE BATTERY COMPRISING A CUP-SHAPED RADIOACTIVE MATERIAL HAVING A SUBSTANTIALLY CYLINDRICAL SIDE WALL AND SUBSTANTIALLY SEMISPHERICAL BOTTOM WALL, AN ELECTRICALLY CONDUCTING COLLECTOR CASE ENCLOSING SAID MATERIAL AND SPACED A SUBSTANTIALLY UNIFORM PREDETERMINED DISTANCE FROM THE OUTSIDE THEREOF, AN ELECTRICALLY CONDUCTIVE COLLECTOR PLUG SECURED TO SAID CASE AND SUBSTANTIALLY UNIFORMLY SPACED SAID PREDETERMINED DISTANCE FROM THE INSIDE OF SAID MATERIAL, SAID CASE AND PLUG FORMING A COLLECTOR ELECTRODE, THE SPACE BETWEEN SAID MATERIAL AND SAID CASE AND BETWEEN SAID MATERIAL AND SAID PLUG BEING FILLED WITH A SOLID DIELECTRIC, SAID SOLID DIELECTRIC BEING IN CLOSE CONTACT WITH SAID RADIOACTIVE MATERIAL, THE INNER SURFACE OF SAID COLLECTOR CASE AND SAID COLLECTOR PLUG, AND A LEAD INSULATED FROM SAID COLLECTOR CONNECTED TO SAID MATERIAL AND EXTENDING THEREFROM TO OUTSIDE OF SAID CASE, SAID PREDETERMINED DISTANCE BEING SUCH THAT CHARGED PARTICLES CAN PASS FROM SAID MATERIAL THROUGH SAID DIELECTRIC MATERIAL TO SAID COLLECTOR ELECTRODE BUT BACKSCATTERED SECONDARY ELECTRONS WILL BE ABSORBED BY SAID DIELECTRIC IN THE EVENT THEY ARE REFLECTED BY SAID COLLECTOR ELECTRODE.