Nicholas A Sanders

US Patent:

6525291, Feb 25, 2003

Filed:

Sep 20, 2000

Appl. No.:

09/665650

Inventors:

Nicholas A. Sanders - Norwich VT
Richard W. Couch - Hanover NH
Yong Yang - Hanover NH
Zhipeng Lu - Hanover NH
Robert C. Dean - Norwich VT
Kenneth J. Woods - Lebanon NH
Charles M. Hackett - Hanover NH
John Sobr - Lebanon NH
William J. Connally - Grantham NH

Assignee:

Hypertherm, Inc. - Hanover NH

International Classification:

B23K 1000

US Classification:

21912139, 21912148

Abstract:

A metal jet cutting system, which includes a jetting heat, a heater and a power source, is used for modifying a workpiece. The jetting head includes a crucible and an inlet for receiving a feed stock of a conductive material. The heater melts the conductive material in the crucible to provide a conductive fluid, which exits the jetting head via an outlet. The power source, which is in electrical communication with the conductive fluid, increases the temperature of the conductive fluid. The conductive fluid is applied to the workpiece to modify the workpiece.

US Patent:

6713709, Mar 30, 2004

Filed:

Dec 10, 2002

Appl. No.:

10/315385

Inventors:

Nicholas A. Sanders - Norwich VT
Richard W. Couch - Norwich NH
Yong Yang - Hanover NH
Zhipeng Lu - Hanover NH
Robert C. Dean - Norwich VT
Kenneth J. Woods - Lebanon NH
Charles M. Hackett - Hanover NH
John Sobr - Lebanon NH
William J. Connally - Grantham NH

Assignee:

Hypertherm, Inc. - Hanover NH

International Classification:

B23K 1000

US Classification:

21912139, 21912148

Abstract:

A metal jet cutting system, which includes a jetting heat, a heater and a power source, is used for modifying a workpiece. The jetting head includes a crucible and an inlet for receiving a feed stock of a conductive material. The heater melts the conductive material in the crucible to provide a conductive fluid, which exits the jetting head via an outlet. The power source, which is in electrical communication with the conductive fluid, increases the temperature of the conductive fluid. The conductive fluid is applied to the workpiece to modify the workpiece.

US Patent:

6720518, Apr 13, 2004

Filed:

Dec 9, 2002

Appl. No.:

10/314645

Inventors:

Nicholas A. Sanders - Norwich VT
Richard W. Couch - Norwich NH
Yong Yang - Hanover NH
Zhipeng Lu - Hanover NH
Robert C. Dean - Norwich VT
Kenneth J. Woods - Lebanon NH
Charles M. Hackett - Hanover NH
John Sobr - Lebanon NH
William J. Connally - Grantham NH

Assignee:

Hypertherm, Inc. - Hanover NH

International Classification:

B23K 1000

US Classification:

21912139, 21912148

Abstract:

A metal jet cutting system, which includes a jetting heat, a heater and a power source, is used for modifying a workpiece. The jetting head includes a crucible and an inlet for receiving a feed stock of a conductive material. The heater melts the conductive material in the crucible to provide a conductive fluid, which exits the jetting head via an outlet. The power source, which is in electrical communication with the conductive fluid, increases the temperature of the conductive fluid. The conductive fluid is applied to the workpiece to modify the workpiece.

US Patent:

7049540, May 23, 2006

Filed:

Feb 20, 2004

Appl. No.:

10/784084

Inventors:

Nicholas A. Sanders - Norwich VT, US
Yong Yang - Hanover NH, US
Zhipeng Lu - Hanover NH, US
Robert C. Dean - Norwich VT, US
Charles M. Hackett - Hanover NH, US

Assignee:

Hypertherm, Inc. - Hanover NH

International Classification:

B23K 10/00

US Classification:

21912139, 21912148

Abstract:

A metal jet cutting system, which includes a jetting heat, a heater and a power source, is used for modifying a workpiece. The jetting head includes a crucible and an inlet for receiving a feed stock of a conductive material. The heater melts the conductive material in the crucible to provide a conductive fluid, which exits the jetting head via an outlet. The power source, which is in electrical communication with the conductive fluid, increases the temperature of the conductive fluid. The conductive fluid is applied to the workpiece to modify the workpiece.

US Patent:

7198867, Apr 3, 2007

Filed:

Sep 17, 2003

Appl. No.:

10/664408

Inventors:

Nicholas A. Sanders - Norwich VT, US

Assignee:

Diffusion Science, Inc. - Norwich VT

International Classification:

H01M 4/58

US Classification:

4292182, 420900, 429233, 429219, 429223, 4292315

Abstract:

An electrolytic apparatus for using catalyst-coated hollow microspheres to produce gases, store them, and to make them available for later use. The apparatus uses catalyst-coated hollow microspheres in reversible electrochemical processes and reactions, such as those used in conjunction with water dissociation, fuel cells, and rechargeable batteries. The apparatus can be used to manufacture and store hydrogen and or oxygen and to make them available for subsequent use as raw materials for use in electrochemical and chemical reactions or as a fuel and or oxidizer for a combustion engine. The apparatus can be used as a hydrogen-oxygen hermetically seal secondary battery. The apparatus can be used as a hydrogen storage portion of certain types of secondary batteries. Hydrogen and oxygen can be stored within hollow microspheres at moderate temperature and pressure, eliminating the need for expensive storage and handling equipment, and increasing the mobility of hydrogen-powered vehicles. Storage of hydrogen and or oxygen within the microspheres significantly reduces flammability and explosion concerns and resolves many fuel cell scalability issues.

US Patent:

7615720, Nov 10, 2009

Filed:

Sep 11, 2006

Appl. No.:

11/518856

Inventors:

Nicholas A. Sanders - Norwich VT, US

Assignee:

Hypertherm, Inc. - Hanover NH

International Classification:

B23K 10/00

US Classification:

21912157, 21912159, 21912154, 21912139

Abstract:

A contact start plasma system is provided that includes a passive pilot arc circuit that decreases the size and cost of the system. The plasma arc system includes a torch body, an electrode having a longitudinally disposed axis and mounted in the body, a nozzle having a longitudinally disposed axis, the nozzle axis being disposed substantially collinearly with the electrode axis, a power supply coupled to the electrode, the nozzle and a workpiece, the power supply providing a current for operating the torch in a pilot arc mode and a transferred arc mode, a gas source coupled to the plasma chamber, the gas source providing gas for operating in a pilot arc mode and a transferred arc mode, and a passive pilot arc circuit coupled between the power supply and the nozzle, the passive pilot arc circuit controlling the operation of the torch in the pilot arc mode. Either the electrode or the nozzle can be translatable for blow-forward or blow-back mode of operation.

US Patent:

8089025, Jan 3, 2012

Filed:

Feb 15, 2008

Appl. No.:

12/032630

Inventors:

Nicholas A. Sanders - Norwich VT, US

Assignee:

Hypertherm, Inc. - Hanover NH

International Classification:

B23K 10/00

US Classification:

21912149, 2191215, 21912151, 21912152, 219 75

Abstract:

A method and apparatus for a gas-cooled plasma arc torch. Components of the torch can include an electrode, nozzle and a shield, each of which can be gas-cooled. The nozzle can be disposed relative to the electrode and can include a generally hollow conductive body and a cooling gas flow channel defined by at least one fin disposed about an exterior surface of the body, the body providing a thermal conductive path that transfers heat between the nozzle to the cooling gas flow channel during operation of the torch. The shield can be disposed relative to the nozzle and can include a generally hollow conductive body and a cooling gas flow channel defined by at least one fin disposed about an exterior surface of the body, the body providing a thermal conductive path that transfers heat between the shield to the cooling gas flow channel during operation of the torch.

US Patent:

8203096, Jun 19, 2012

Filed:

Sep 10, 2007

Appl. No.:

11/852855

Inventors:

Nicholas A. Sanders - Norwich VT, US
E. Michael Shipulski - Etna NH, US
Mike Hoffa - Lebanon NH, US
Jay L. Jason - Claremont NH, US

Assignee:

Hypertherm, Inc. - Hanover NH

International Classification:

B23K 10/00

US Classification:

21912148, 21912139, 2191301, 21912159

Abstract:

A portable plasma arc torch system can be used for processing materials. The system includes a replaceable or rechargeable power source and replaceable or rechargeable gas source. A controller communicates with at least one of the power source or the gas source. A plasma delivery device received via the controller current from the power source and gas from the gas source to generate a plasma arc at an output of the plasma delivery device. The plasma arc can be used to process materials such as metallic workpieces. The plasma arc torch can include a wearable portable assembly which includes the replaceable or rechargeable power and gas source. A plasma delivery device receives current from the power source in the assembly and gas from the gas source in the assembly to generate a plasma arc.