Vapor pressure control in electron discharge devices

Claim 2

AN ALTERNATING CURRENT ELECTRON DICHARGE DEVICE COMPRISING AN ENVELOPE CONTAINING A VAPORIZABLE, POSITIVELY IONIZABLE MATERIAL, FIRST AND SECOND SPACED SUBSTANTIALLY ELECTRON EMISSIVE ELECTRODES ADAPTED TO PROVIDE AN ALTERNATING ELECTRON DISCHARGE AND AN ALTERNATING ION COUNTERFLOW OF SAID MATERIAL IN SAID ENVELOPE, A WALL IN THE DISCHARGE PATH FROM SAID SECOND ENVELOPE, SAID WALL HAVING A PASSAGE ON THE ELECTRON PATH FROM SAID FIRST ELECTRODE, AND AN AUXILIARY ELECTRODE BETWEEN SAID WALL AND THE SECOND ELECTRODE, SAID AUXILIARY ELECTRODE BEING CONNECTED TO SAID FIRST ELECTRODE SO AS TO COL-LECT ELECTRON DISCHARGE FROM THE SECOND ELECTRODE, SAID FIRST ELECTRODE BEING SUBSTANTIALLY MORE ELECTRON EMISSIVE THAN SAID AUXILIARY ELECTRODES, WHEREBY POSITIVE IONS OF SAID MATERIAL ARE ELECTROPHORETICALLY PUMPED THROUGH SAID OPENING TOWARD SAID FIRST ELECTRODE, THEREBY TO CONTROL THE VAPOR PRESSURE BETWEEN SAID WALL AND SAID SECOND ELECTRODE.

Claim 3

AN ALTERNATING CURRENT ELECTRON DISCHARGE DEVICE COMPRISING A SEALED ENVELOPE CONTAINING A VAPORIZABLE, POSITIVELY IONIZABLE MATERIAL, FIRST AND SECOND SPACED SUBSTANTIALLY ELECTRON EMISSIVE ELECTRODES HAVING LEADS EXTENDING OUTSIDE THE ENVELOPE AND ADAPTED TO PROVIDE AN ALTERNATING ELECTRON DISCHARGE AND AN ALTERNATING ION COUNTERFLOW OF SAID MATERIAL IN SAID ENVELOPE, A WALL IN THE DISCHARGE PATH FROM SAID SECOND ELECTRODE, SAID WALL HAVING AN OPENING ON THE ELECTRON PATH FROM SAID FIRST ELECTRODE, AN AUXILIARY ELECTRODE BETWEEN SAID WALL AND THE SECOND ELECTRODE, SAID AUXILIARY ELECTRODE BEING CONNECTED TO A LEAD TO SAID FIRST ELECTRODE SO AS TO COLLECT ELECTRON DISCHARGE FROM THE SECOND ELECTRODE, SAID FIRST ELECTRODE BEING SUBSTANTIALLY MORE ELECTRON EMISSIVE THAN SAID AUXILIARY ELECTRODE, WHEREBY POSITIVE IONS OF SAID MATERIAL ARE ELECTROPHORETICALLY PUMPED THROUGH SAID OPENING TOWARD SAID FIRST ELECTRODE, THEREBY TO CONTROL THE VAPOR PRESSURE BETWEEN SAID WALL AND SAID SECOND ELECTRODE AT HIGHER THAN NORMAL OPERATING TEMPERATURES, THE CONNECTION BETWEEN SAID FIRST ELECTRODE LEAD AND AUXILIARY ELECTRODE INCLUDING A THERMOSTATIC SWITCH ADAPTED TO OPEN AT NORMAL TEMPERATURES TO ALLOW THE DEVICE TO OPERATE WITHOUT THE PUMPING EFFECT CAUSED BY SAID AUXILIARY ELECTRODE.

Claim 4

AN ALTERNATING CURRENT ELECTRON DISCHARGE DEVICE COMPRISING A SEALED ENVELOPE CONTAINING A VAPORIZABLE, POSITIVELY IONIZABLE MATERIAL, FIRST AND SECOND SPACED SUBSTANTIALLY ELECTRON EMISSIVE ELECTRODES HAVING LEADS EXTENDING OUTSIDE THE ENVELOPE AND ADAPTED TO PROVIDE AN ALTERNATING ELECTRON DISCHARGE AND AN ALTERNATING ION COUNTERFLOW OF SAID MATERIAL IN SAID ENVELOPE, A WALL IN THE DISCHARGE PATH FROM SAID SECOND ELECTRODE, SAID WALL HAVING AN OPENING ON THE ELECTRON PATH FROM SAID FIRST ELECTRODE, AN AUXILIARY ELECTRODE BETWEEN SAID WALL AND THE SECOND ELECTRODE, SAID AUXILIARY ELECTRODE BEING CONNECTED TO A LEAD TO SAID FIRST ELECTRODE SO AS TO COLLECT ELECTRON DISCHARGE FROM THE SECOND ELECTRODE, SAID FIRST ELECTRODE BEING SUBSTANTIALLY MORE ELECTRON EMISSIVE THAN SAID AUXILIARY ELECTRODE, WHEREBY POSITIVE IONS OF SAID MATERIAL ARE ELECTROPHORETICALLY PUMPED THROUGH SAID OPENING TOWARD SAID FIRST ELECTRODE, THEREBY TO CONTROL THE VAPOR PRESSURE BETWEEN SAID WALL AND SAID SECOND ELECTRODE AT HIGHER THAN NORMAL OPERATING TEMPERATURES, THE CONNECTION BETWEEN SAID FIRST ELECTRODE LEAD AND AUXILIARY ELECTRODE INCLUDING A THERMOSTATIC SWITCH ADAPTED TO OPEN AT NORMAL TEMPERATURES TO ALLOW THE DEVICE TO OPERATE WITHOUT THE PUMPING EFFECT CAUSED BY SAID AUXILIARY ELECTRODE.