Electrical resistance elements
Abstract
Abstract AN ELECTRICAL RESISTANCE ELEMENT CONSISTS OF A REFCACTORY CONGLOMERATE OF PARTICLES OF A MATERIAL, E.G. CARBON OF LOW ELECTRICAL RESISTIVITY AND A MATERIAL, E.G. CALCINED CLAY OR ALUMINA, OF HIGH ELECTRICAL RESISTIVITY AND A BASIC BINDER, E.G. GALL CLAY OR BENTONITE, PROCESSED TO FORM AN OPEN CELLULAR STRUCTURE SO THAT THE ELEMENT IS PERMEABLE BY A FLUID, THE STRUCTURE HAVING EITHER OR BOTH OF THE FOLLOWING CHARACTERISTICS: (A) THE APPARENT POROSITY OF THE ELEMENT IS NOT LESS THAN 25%; (B) BETWEEN TWO SURFACES THE PERMEABILITY OF THE ELEMENT IS SUCH AS TO GIVE A FLOW RATE OF NOT LESS THAN 0.1 ML. (MILLILITRE) OF WATER PER SECOND THROUGH A 1 CM. CUBE OF THE ELEMENT MATERIAL, UNDER A PRESSURE OF 50 MM. MERCURY AT A TEMPERATORE OF 20*C.
Inventors
- 👤 Robert L Galloway
Bibliographic Details
Claims Analysis
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