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Columbia Gas System Service Corporation Patents
Assignee:
Columbia Gas System Service Corporation
Address:
Wilmington, DE
No. of patents:
19
Patents:












Patent Number Title Of Patent Date Issued
5339654 Heat transfer apparatus August 23, 1994
A refrigeration and heating system has been made in which improved efficiencies are obtained by placing helical concentric coils of at least two generators (80 and 81) and recuperators (86 and 95) on a common axis (232) with a heating unit (84) at the center and allowing the hot comb
5126654 Non-invasive, high resolution detection of electrical currents and electrochemical impedances at June 30, 1992
Electrical current distribution in the soil surrounding a buried pipeline is detected by applying an AC electrical potential between the pipe and a buried electrode spaced from the pipe. The magnetic field at spaced localities along the pipe arising from currents transverse to the pipe i
5087873 Non-invasive, high resolution detection of electrical currents and electrochemical impedances at February 11, 1992
Electrical current distribution in the soil surrounding a buried pipeline is detected by applying an AC electrical potential between the pipe and a buried electrode spaced from the pipe. The magnetic field at spaced localities along the pipe arising from currents transverse to the pipe i
5067330 Heat transfer apparatus for heat pumps November 26, 1991
A refrigeration and heating system has been made in which improved efficiencies are obtained by placing helical concentric coils of at least two generators and recuperators on a common axis with a heating unit at the center and allowing the hot combustion gases to circulate in serpen
4805450 Method of locating hydrocarbon producing strata and the instrument therefor February 21, 1989
A cylinder is mounted to descend a borehole for purposes of measuring the mass flow rate of gas flowing upward in the borehole. Within the cylinder is a source of tracer gas which is ejected at a constant mass flow rate [05] from near the lower end of the cylinder. A tracer gas concentra
4783990 Apparatus for measuring the quantity of gas pumped by a compressor November 15, 1988
An apparatus for measuring the throughput and average suction and discharge pressures of a compressor comprises pressure sensors for measuring the suction and discharge pressures of the compressor and in one embodiment a device for measuring gas temperature. The apparatus further compris
4773255 Apparatus for injecting gas into a pipeline September 27, 1988
The invention provides a method for tagging methane by adding thereto one or more of the tracer compounds sulfur hexafluoride and chloropentafluoroethane. The methane being tagged is normally being stored in underground storage fields to provide identity and proof of ownership of the
4742687 Dual cooling/heating process and composition May 10, 1988
This invention relates to a cooling and heating system which operates on the absorption and phase change heat exchange principle. More particularly it relates to a continuous heat actuated, air cooled, double effect generator cycle, absorption system. In further aspects, this invention
4646541 Absorption refrigeration and heat pump system March 3, 1987
This invention relates to a cooling and heating system which operates on the absorption and phase change heat exchange principle. More particularly it relates to a continuous heat actuated, air cooled, double effect generator cycle, absorption system. In further aspects, this invention
4641631 Apparatus and method for burning a combustible gas, and a heat exchanger for use in this apparat February 10, 1987
An apparatus functioning as a high-efficiency water heater. This apparatus passes a combustible mixture of gas and air from an impeller into the hollow interior of a cylindrical gas burner. The combustible mixture flows out through apertures in the cylindrical walls of the gas burner and
4623435 Backfill for magnesium anodes November 18, 1986
A backfill composition for use with sacrificial magnesium anodes used in the cathodic protection of ferrous metal structures comprises an anion-releasing material capable of releasing fluoride, phosphate or zincate ions in water-soluble form and a magnesium-transporting adjuvant capa
4551154 Gas tracer composition and method November 5, 1985
The invention provides a method for tagging methane by adding thereto one or more of the tracer compounds sulfur hexafluoride and chloropentafluoroethane. The methane being tagged is noramlly being stored in underground storage fields to provide identity and proof of ownership of the
4541410 Apparatus and method for burning a combustible gas, and a heat exchanger for use in this apparat September 17, 1985
An apparatus is described capable of functioning as a high-efficiency water heater. This apparatus passes a combustible mixture of gas and air from an impeller into the hollow interior of a cylindrical gas burner. The combustible mixture flows out through apertures in the cylindrical wal
4538460 Method for determining permeability September 3, 1985
The permeability of samples, especially rock samples, is determined by immersing the sample in a dye solution to permit dye to diffuse into the sample, rinsing remaining dye solution from the surface and then either placing the rinsed sample in a leachback solution to permit dye to diffu
4331129 Solar energy for LNG vaporization May 25, 1982
Disclosed is an apparatus for vaporizing a normally gaseous fluid which is in liquefied state which apparatus employs solar energy for heating a second fluid which preferably is water, which solar heated second fluid is passed into heat exchange relationship with said liquefied gaseous f
4238206 Using solvents for acidic gas removal December 9, 1980
Disclosed is an improved process for removing carbon dioxide containing acidic gas from a normally gaseous mixture wherein the gaseous mixture is contacted with a liquid anhydrous solvent which physically absorbs said acidic gas but which is chemically unreactive with said acidic gas, sa
4067681 Gas-fired smooth top range January 10, 1978
A gas cooking range of the smooth top type has four burners positioned under a single plate of heat-resistant glass/ceramic material; and a single igniter and safety control assembly is centrally positioned between the burners. The supply of gas to each of the burners flows through an
4024839 Gas-fired smooth top range May 24, 1977
A gas cooking range of the smooth top type has four burners positioned under a single plate of heat-resistant glass/ceramic material; and a single igniter and safety control assembly is centrally positioned between the burners. The supply of gas to each of the burners flows through an
4020821 Gas-fired smooth top range May 3, 1977
A gas cooking range of the smooth top type has four burners positioned under a single plate of heat-resistant glass/ceramic material; and a single igniter and safety control assembly is centrally positioned between the burners. The supply of gas to each of the burners flows through an

 
 
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