1
Ronald L Fox: Downhole steam generator with improved preheating, combustion and protection features. The United States of America represented by the United States Department of Energy, May 31, 1983: US04385661 (194 worldwide citation)

An apparatus for generation of steam in a borehole for penetration into an earth formation wherein feedback preheater means are provided for the fuel and water before entering the combustor assembly. First, combustion gases are conducted from the combustion chamber to locations in proximity to the w ...


2
Ronald L Fox: Downhole steam generator using low pressure fuel and air supply. The United States of America represented by the United States Department of Energy, June 28, 1983: US04390062 (48 worldwide citation)

An apparatus for generation of steam in a borehole for penetration into an earth formation wherein a spiral, tubular heat exchanger is used in the combustion chamber to isolate the combustion process from the water being superheated for conversion into steam. The isolation allows combustion of a rel ...


3
Ronald L Fox: Process for preparing an asymmetric permselective membrane. The United States of America represented by the Secretary of the Interior, William S Brown, Donald A Gardiner, December 22, 1981: US04307135 (31 worldwide citation)

Asymmetric reverse osmosis membranes are made from synthetic aromatic polyimides having a relatively high predominance of polar groups in the polymer backbone. A polar/non-polar group ratio of from 2:2 to 2:7 per imidized nitrogen link is required. Such membranes can be fabricated using conventional ...


4
Stephen Eisenhawer, Anthony J Mulac, A Burl Donaldson, Ronald L Fox: Steam generator having a high pressure combustor with controlled thermal and mechanical stresses and utilizing pyrophoric ignition. Enhanced Energy Systems, Francis J Lidd, March 10, 1987: US04648835 (29 worldwide citation)

A steam generator having substantial thermal capacity for producing high quality steam used primarily for downhole steam generation in tertiary oil recovery. Incorporated in the generator is a novel high pressure, high heat release combustor, utilizing high pressure gaseous fuel and compressed gas o ...


5
Ronald L Fox: Downhole steam generator having a downhole oxidant compressor. The United States of America represented by the United States Department of Energy, April 19, 1983: US04380267 (28 worldwide citation)

Apparatus and method for generation of steam in a borehole for penetration into an earth formation wherein a downhole oxidant compressor is used to compress relatively low pressure (atmospheric) oxidant, such as air, to a relatively high pressure prior to mixing with fuel for combustion. The multi-s ...


6
Stephen Eisenhawer, Anthony J Mulac, A Burl Donaldson, Ronald L Fox: Direct contact low emission steam generating system and method utilizing a compact, multi-fuel burner. Enhanced Energy Systems, Francis J Lidd, February 12, 1985: US04498542 (21 worldwide citation)

A high output, high pressure direct contact steam generator for producing high quality steam particularly suited for use with low grade, low cost fuel. When used in a system incorporating heat recovery and conversion of carryover water enthalpy into shaft horesepower, the unit disclosed provides hig ...


7
Charles R Mungle, Ronald L Fox: Method of making asymmetric cellulose triacetate membranes. The United States of America represented by the Secretary of the Interior, William S Brown, Donald A Gardiner, May 31, 1977: US04026978 (13 worldwide citation)

Asymmetric cellulose triacetate semipermeable membranes cast from a solution of cellulose triacetate having an acetyl content of at least 43 percent in a solvent mixture having a ratio of dioxane to acetone of at least about 1.5 to 1, which solution also contains a swelling agent in the form of a lo ...


8
Ronald L Fox, Scott A Amundsen: Flow meter for a positive displacement pump. Francis J Lidds, March 6, 1990: US04906165 (5 worldwide citation)

A flow meter for use with a fluid source includes a chamber of known volume, and level sensors for detecting fluid boundaries at either end of the known volume. A valve between the fluid source and chamber is opened at a defined time until fluid level within the chamber rises above the upper sensor, ...


9
Ronald L Fox: Direct contact vapor generator fire suppression apparatus. Brunswick Corporation, VanSanten Hoffman & Ertel Wood Phillips, November 24, 1992: US05165483 (5 worldwide citation)

An improved method and apparatus for controlling large hydrocarbon-fueled fires contemplates the use of vapors produced by direct contact vapor generators to simultaneously cool the flames and deprive the fire of oxygen. A direct contact vapor generator accomplishes fire suppression by surrounding t ...