Plasma torch electronic pulsing circuit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO RE37608
SERIAL NO

08352389

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A plasma arc torch having new electronic circuit concepts wherein main current regulated power means regulates the pilot current prior to main arc transfer. Further, the circuit may contain two inductors to which DC current initially flows but is interrupted upon main arc transfer such that one inductor maintains the pilot arc while the current in the second inductor forces the establishment of the transferred arc. Also, advantages are presented in pulsing the cutting arc as well as pulsing the pilot arc.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DEUTSCHE BANK TRUST COMPANY AMERICAS CORPORATE TRUST & AGENCY SERVICESWEST LEBANON, NH13
VICTOR EQUIPMENT COMPANYDENTON, TX186

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Solley, Dennis J Tucson, AZ 4 121
Tatham, David A Enfield, NH 8 88

Cited Art Landscape

Patent Info (Count) # Cites Year
 
POWCON INCORPORATED, A CORP. OF DE. (2)
* 4839499 System for supplying power to different cutting torches 16 1988
* 4943699 System for supplying power 26 1989
 
LA SOUDURE AUTOGENE FRANCAISE (1)
* 4280042 Process and installation for automatic ignition of a plasma cutting torch 17 1980
 
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE (1)
* 4598191 Very low power plasma arc cutting equipment 14 1985
 
THERMAL DYNAMICS CORPORATION (1)
* 4324971 Torch height acquisition using arc transfer 18 1980
 
Kabushiki Kaisha Komatsu Seisakusho (1)
* 5036176 Plasma arc cutter and method of controlling the same 23 1989
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ILLINOIS TOOL WORKS INC. (2)
7022935 Plasma-cutting torch with integrated high frequency starter 9 2003
* 2007/0045,241 CONTACT START PLASMA TORCH AND METHOD OF OPERATION 1 2005
 
VICTOR EQUIPMENT COMPANY (2)
* 6794601 Plasma arc torch system with pilot re-attach circuit and method 9 2002
* 2004/0045,942 Plasma ARC torch system with pilot re-attach circuit and method 0 2002
 
The ESAB Group, Inc. (1)
7034245 Systems and methods for controlling pilot arc current in an arc cutting or welding machine 1 2004
 
Retro Systems, LLC (2)
8946583 Angled cut height control system for a plasma arch torch 0 2011
8946584 Angled cut height control system for a plasma arch torch 0 2011
* Cited By Examiner