William J Quest

US Patent:

6385986, May 14, 2002

Filed:

Nov 19, 2001

Appl. No.:

09/989147

Inventors:

James E. Ferris - Richardson TX 75080
William J. Quest - Dallas TX 75229

International Classification:

F25B 4500

US Classification:

62292, 62 77

Abstract:

A refrigerant charging hose assembly has an aerosol shut-off valve connectable to a refrigerant canister and interconnected to a disconnect coupler fitting by a length of refrigerant charging hose, the body portion of the coupler fitting being economically formed from high tensile strength elastomeric plastic material. A spring-loaded, floatingly supported control pin member is shifted to open the disconnect coupler fitting when the pin member engages and depresses a corresponding pin member within an air conditioning system service fitting to which the coupler fitting is connected. when the coupler fitting is removed from the service fitting the coupler fitting pin member is spring-driven back to its original position in which a flange portion thereof closes the coupler fitting to prevent discharge of pressurized refrigerant therethrough from the canister.

US Patent:

6438970, Aug 27, 2002

Filed:

Sep 28, 2001

Appl. No.:

09/965749

Inventors:

James E. Ferris - Richardson TX 75080
William J. Quest - Dallas TX 75229

International Classification:

F25B 4500

US Classification:

62 77, 62 85, 62114

Abstract:

A supply canister is partially filled with a refrigerant circuit additive fluid which is partially evacuated, said refrigerant circuit additive fluid is comprised of a combination of a binding azeotrope of methanol and cyclohexanone with a drying agent, a metal sealant and a rubber rejuvinating compound in a single container. Additive fluids from the canister may be placed into the refrigerant circuit of an air conditioning system by (1) connecting the canister to the circuit after it has been emptied and vacuum pressure created therein, (2) connecting the canister to the refrigerant circuit suction line during system operation, or (3) connecting the canister to the suction line with the system off, to thereby force refrigerant from the circuit into the canister, and then starting the system to cause the vacuum pressure in the suction line to draw the contents of the canister into the refrigerant circuit.

US Patent:

6481221, Nov 19, 2002

Filed:

Mar 8, 2001

Appl. No.:

09/802178

Inventors:

James E. Ferris - Richardson TX 75080
William J. Quest - Dallas TX 75229

International Classification:

F25B 4500

US Classification:

62 77, 62292

Abstract:

A supply canister is partially filled with a refrigerant circuit additive liquid and is partially evacuated. Additive liquid from the canister may be placed into the refrigerant circuit of an air conditioning system by (1) connecting the canister to the circuit after it has been emptied and a vacuum pressure created therein, (2) connecting the canister to the refrigerant circuit suction line during system operation, or (3) connecting the canister to the suction line with the system off, to thereby force refrigerant from the circuit into the canister, and then starting the system to cause the vacuum pressure in the suction line to draw the contents of the canister into the refrigerant circuit.

US Patent:

6609385, Aug 26, 2003

Filed:

Oct 24, 2002

Appl. No.:

10/280041

Inventors:

James E. Ferris - Richardson TX
William J. Quest - Dallas TX

Assignee:

E.F. Products, Inc. - Kaufman TX

International Classification:

F25B 4500

US Classification:

62 77, 62149, 62292

Abstract:

A refrigerant charging/pressure testing hose assembly meeting SAE standard J2196 is useable to both (1) check the pressure in a refrigerant circuit and, (2) if necessary, add refrigerant to the circuit. The assembly includes a length of refrigerant charging, hose having a quick disconnect coupler disposed at one end and connectable to a service fitting portion of the circuit, a piercing-type shutoff valve disposed at the other hose end and connectable to a refrigerant charging canister, a pressure gauge installed in a longitudinally intermediate portion of the hose, and a check valve installed in the hose between the shutoff valve and the pressure gauge and permitting flow through the hose only toward the quick coupler.

US Patent:

6722141, Apr 20, 2004

Filed:

Jul 8, 2002

Appl. No.:

10/190764

Inventors:

James E. Ferris - Richardson TX
William J. Quest - Dallas TX

Assignee:

E.F. Products, Inc. - Kaufman TX

International Classification:

F25B 4500

US Classification:

62 77, 62292, 62177, 62 73

Abstract:

A supply canister is partially filled with a refrigerant circuit additive liquid and is partially evacuated. Additive liquid from the canister may be placed into the refrigerant circuit of an air conditioning system by (1) connecting the canister to the circuit after it has been emptied and a vacuum pressure created therein, (2) connecting the canister to the refrigerant circuit suction line during system operation, or (3) connecting the canister to the suction line with the system off, to thereby force refrigerant from the circuit into the canister, and then starting the system to cause the vacuum pressure in the suction line to draw the contents of the canister into the refrigerant circuit.

US Patent:

6796340, Sep 28, 2004

Filed:

May 22, 2003

Appl. No.:

10/444000

Inventors:

James E. Ferris - Richardson TX
William J. Quest - Dallas TX

Assignee:

E.F. Products, Inc. - Dallas TX

International Classification:

B65B 104

US Classification:

141 67, 141 98, 141351, 141383, 141 2, 13761404, 2511491

Abstract:

A system and method for dispensing a pressurized fluid from a container into an automobile air conditioning system. A moveable plunger in an interior of a housing may engage an automobile air conditioning system valve and pressurized container valve to allow refrigerant and lubricant to flow from the pressurized container into the automobile air conditioning system. A quick-connect coupling may be used to couple the housing to the automobile air conditioning system after the housing has been snapped onto the pressurized container. In addition, the moveable plunger may be biased toward the automobile air conditioning system valve by a spring to ensure the automobile air conditioning system valve is opened when the housing is coupled to the automobile air conditioning system.

US Patent:

7107781, Sep 19, 2006

Filed:

Oct 26, 2004

Appl. No.:

10/973563

Inventors:

William J. Quest - Dallas TX, US
Kerry W. Whitaker - Plano TX, US

Assignee:

E.F. Products, Inc. - Dallas TX

International Classification:

F25B 45/00

US Classification:

62292

Abstract:

A combination pressure measurement/refrigerant charging apparatus may include a shutoff valve that includes a piercing pin and a pressure gauge. The piercing pin may be used to pierce a refrigerant can. The pressure gauge may be used as a handle for operating the shutoff valve. A first end of a hose may be coupled to the shutoff. A quick coupling device may be coupled to a second end of the hose. The quick coupling device may be used to couple the apparatus to a refrigerant system.

US Patent:

7124598, Oct 24, 2006

Filed:

Oct 26, 2004

Appl. No.:

10/973570

Inventors:

William J. Quest - Dallas TX, US
Kerry W. Whitaker - Plano TX, US

Assignee:

E.F. Products, Inc. - Dallas TX

International Classification:

F25B 45/00

US Classification:

62292, 62 77

Abstract:

A combination pressure measurement/charging system may include a conduit coupled to a refrigerant can. The conduit may be coupled to a low-pressure side of a refrigerant system. The system may include a valve to control a flow of fluid through the conduit. Thus, a flow of fluid between the refrigerant can and the low-pressure side of the refrigerant system may be controlled using the valve. A first pressure gauge may be in fluid communication with the conduit. The first pressure gauge may be coupled to the low-pressure side of the refrigerant system. The first pressure gauge may be used to operate the valve to control fluid flow through the conduit. A second pressure gauge may be coupled to a high-pressure side of the refrigerant system. The second pressure gauge may be isolated from fluids that flow through the conduit.