| Patent Number |
Title Of Patent |
Date Issued |
| RE35395 |
Leak detection in heating, ventilating and air conditioning systems using an environmentally saf |
December 10, 1996 |
| Refrigerant leakage in heating, ventilating and air conditioning systems employing hydrofluorocarbon refrigerants is determined by adding a mixture .[.of.]. .Iadd.including .Iaddend.predetermined amounts of a napthalamide optical brightner .[.with an appropriate lubricant.]. to the syste |
| RE35370 |
Leak detection in heating ventilating and air conditioning systems using an environmentally safe |
November 5, 1996 |
| The present invention rleates to the effective leak detection of refrigerants by the addition of dyes from the general chemical class of naphthalimide fluorescent dyes in a refrigeration system where said refrigeration system employs alone, or in combination, a refrigerant in a herme |
| D459438 |
Fluid injector |
June 25, 2002 |
|
| 7253557 |
Light source provided with a housing enclosing voltage regulator means and method of manufacturi |
August 7, 2007 |
| A light source for testing sites using a fluorescent dye is described. The light source can include a low voltage lamp or a low heat generating lamp. |
| 7157724 |
Detection lamp |
January 2, 2007 |
| A light source for testing sites using a fluorescent dye is described. The light source can include a low voltage lamp or a low heat generating lamp. An emission from the fluorescent dye can be detected through a filter lens, which can include a primary filter and a trim filter. The |
| 7129706 |
Part tester and method |
October 31, 2006 |
| A part tester can be configured to prevent part warranty fraud by requiring the input of unique part identifying information into a part tester prior to initiation of the testing. By configuring the tester and the information input correctly, warranty fraud can be minimized. |
| 7122812 |
Leak detection lamp |
October 17, 2006 |
| A light source for examining sites in heating, ventilating, and air conditioning systems for leaks using a fluorescent dye is described. The light source can include a low voltage lamp or a low heat generating lamp. |
| 7077149 |
Fluid injection system |
July 18, 2006 |
| An apparatus for injecting a fluid into a closed pressurized system can be connected to a service port of the system. The fluid can be introduced into the system using the resting and operating pressures of the closed pressurized system. The system can be a climate control system. |
| 6889519 |
Fluid delivery apparatus and method |
May 10, 2005 |
| A fluid delivery apparatus provides for controlled delivery of fluids into a fluid system. The fluid delivery apparatus can allow a defined volume of fluid to be delivered to the fluid system cleanly, minimizing fluid waste and spillage. |
| 6851442 |
Fluid addition apparatus |
February 8, 2005 |
| An apparatus for adding fluid to a closed system can be connected to a service port of the system. The fluid can be added to the system by actuating valves on the system and on the fluid supply. The apparatus facilitates clean addition of the fluid to the system. The system can be a |
| 6807976 |
Fluid addition apparatus |
October 26, 2004 |
| An apparatus for adding fluid to a closed system can be connected to a service port of the system. The fluid can be added to the system by actuating valves on the system and on the fluid supply. The apparatus facilitates clean addition of the fluid to the system. The system can be a |
| 6590220 |
Leak detection lamp |
July 8, 2003 |
| A light source for examining sites in heating, ventilating, and air conditioning systems for leaks using a fluorescent dye is described. The light source can include a low voltage lamp or a low heat generating lamp. |
| 6521459 |
Method and apparatus for testing the acidity of a lubricant in a climate control system |
February 18, 2003 |
| A test kit for testing acidity of a lubricant in a climate control system containing a naphthalimide dye contains an aqueous solution having a salt and a known amount of hydroxide and an organic solution containing an alcohol and an organic solvent having a flash point of at least 13 |
| 6457606 |
Method and device for introducing fluid material into a climate control system |
October 1, 2002 |
| The invention features a method and device for introducing fluid material into a climate control system. The fluid material can include a lubricant or a leak detection additive. The device includes a housing having an exit orifice and a housing holder having a trigger. Multiple doses of |
| 6442958 |
Fluid delivery apparatus and method |
September 3, 2002 |
| A fluid delivery apparatus provides for controlled delivery of fluids into a fluid system. The fluid delivery apparatus can allow a defined volume of fluid to be delivered to the fluid system cleanly, minimizing fluid waste and spillage. The fluid delivery apparatus can provide a mechani |
| 6435779 |
Method and apparatus for introducing a tablet into a climate control system |
August 20, 2002 |
| A method and apparatus for introducing a tablet into a climate control system is described. The tablet can include a leak detection dye which is placed into appropriate locations within the system with a tablet inserter. The system can be an air conditioning system. The method can be |
| 6355935 |
Portable light source and system for use in leak detection |
March 12, 2002 |
| A light source for examining leak detection sites in heating, ventilating, and air conditioning systems using a fluorescent dye is described. The light source can include a parabolic reflector or a low voltage lamp. |
| 6308528 |
Fluid delivery apparatus and method |
October 30, 2001 |
| A fluid delivery apparatus provides for controlled delivery of fluids into a fluid system. The fluid delivery apparatus can allow a defined volume of fluid to be delivered to the fluid system cleanly, minimizing fluid waste and spillage. The fluid delivery apparatus can provide a mechani |
| 6196016 |
Multiple-dose, flush-through injector |
March 6, 2001 |
| Devices and methods for multiple-dose injection of a liquid, e.g., a leak detection dye or a compressor lubricant, into a closed system, e.g., a refrigeration system, are disclosed. Fluid flow through the closed system is used to flush the liquid into the system. |
| 6183663 |
Leak detection dye delivery system |
February 6, 2001 |
| A leak detection dye delivery system for introducing a leak detection dye into a climate control system is described. The leak detection dye delivery system includes a canister loaded with a leak detection dye composition including dye concentrate, a lubricant, and a refrigerant. |
| 6178809 |
Leak detection in heating, ventilating, refrigeration, and air conditioning systems utilizing ad |
January 30, 2001 |
| A leak detecting dye for use in heating, ventilating, air conditioning, or refrigeration systems employing dyes, such as naphthalimide, perylene, coumarin, anthracene, phenanthracene, and thioxanthane.The dye is adsorbed onto a non-absorbent carrier which is then adapted for inclusion in |
| 6170541 |
Leak detection dye introduction system and method |
January 9, 2001 |
| A leak detection dye introduction system for introducing a leak detection dye composition into a climate control system includes an adaptor having an outlet and an inlet connected by a flow path to the outlet, and a valve assembly located between the inlet and the outlet. The outlet is |
| 6101867 |
Dye concentrate |
August 15, 2000 |
| A dye concentrate for introducing a leak detection dye into a climate control system is described. The dye concentrate is a mixture of a lubricant and at least 40 weight percent of a leak detection dye. The dye concentrate can be thixotropic, a paste, or a suspension. The dye concent |
| 6070455 |
Leak detection additives |
June 6, 2000 |
| A dye-delivery structure for introducing a leak detection dye into a climate control system is described. The dye-delivery structure is formed by compression or molding a leak detection dye and a binding agent into a dye-delivery structure such as a tablet, sphere, pellet, or disk, which |
| 6070454 |
Leak detection additives for use in heating, ventilating, refrigeration, and air conditioning sy |
June 6, 2000 |
| A leak detecting dye for use in heating, ventilating, air conditioning, or refrigeration systems employing a dye powder form of dyes such as naphthalimide, perylene, coumarin, and thioxanthane.The dye is formulated into a useful liquid or paste mixture by mixing the dye powder (or dye in |
| 5979226 |
Leak detection additives for oil or fuel systems |
November 9, 1999 |
| A dye-delivery composition for introducing a leak detection dye into an engine oil or fuel system is described. The dye-delivery composition is a mixture of a lubricant and a leak detection dye. The dye-delivery composition can be thixotropic, a paste, a suspension, or a unitary stru |
| 5979224 |
Leak detection in heating, ventilating, refrigeration, and air conditioning systems utilizing ad |
November 9, 1999 |
| A leak detecting dye for use in heating, ventilating, air conditioning, or refrigeration systems employing dyes such as naphthalimide, perylene, coumarin, anthracene, phenanthracene, and thioxanthane.The dye is adsorbed onto a non-absorbent carrier which is then adapted for inclusion int |
| 5959306 |
Portable light source and system for use in leak detection |
September 28, 1999 |
| A light source for examining leak detection sites in heating, ventilating, and air conditioning systems using a flourescent dye is described. The light source can include a parabolic reflector or a low voltage lamp. |
| 5742066 |
Light source for use in leak detection in heating, ventilating, and air conditioning systems tha |
April 21, 1998 |
| A light source for use in examining leak detection sites in heating, ventilating, and air conditioning systems that utilize a fluorescence-producing dye in the refrigerant to determine the presence of leaks. The light source combines a dichroic reflector with a lamp and interference |
| 5681984 |
Leak detection in heating, ventilating, refrigeration, and air conditioning systems utilizing ad |
October 28, 1997 |
| A leak detecting dye for use in heating, ventilating, air conditioning, or refrigeration systems employing dyes such as naphthalimide, perylene, coumarin, anthracene, phenanthracene, and thioxanthane. The dye is adsorbed onto a non-absorbent carrier which is then adapted for inclusion |
| 5674000 |
Light source for use in leak detection in heating, ventilating, and air conditioning systems tha |
October 7, 1997 |
| A light source for use in examining leak detection sites in heating, ventilating, and air conditioning systems that utilize a fluorescence-producing dye in the refrigerant to determine the presence of leaks. The light source combines a faceted reflector with a lamp and interference f |
| 5421192 |
Leak detection in heating, ventilating and air conditioning systems using an environmentally saf |
June 6, 1995 |
| The present invention relates to the effective leak detection of refrigerants by the addition of dyes from the general chemical class of naphthalimide fluorescent dyes in a refrigeration system where said refrigeration system employs alone, or in combination, a refrigerant in a herme |
