Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 8168916 | Enhanced piercing through current profiling In general, the present invention provides a method of piercing a workpiece with a plasma arc torch of the type having a plasma gas flow path for directing a plasma gas through the torch and a secondary gas flow path for directing a secondary gas through the torch. ... | 05/01/2012 |
| 7935909 | Hybrid shield device for a plasma arc torch Methods and devices for controlling the flow of gases through a plasma arc torch are provided. A flow of plasma gas is directed to a plasma chamber, a first flow of auxiliary gas is directed around a plasma stream that exits a tip in one of a swirling manner and a r... | 05/03/2011 |
| 7737383 | Contoured shield orifice for a plasma arc torch A component for use in a plasma arc torch is provided that includes a continuously contoured surface extending along the component that directs a flow of shield gas at a predetermined angle to result in a specific pierce or cut location on a workpiece. In one form, ... | 06/15/2010 |
| 7582844 | Torch handle gas control Devices and methods are provided that control gas flow to a plasma arc torch local to a torch handle. Generally, a plasma arc torch is provided that comprises a gas control device operable with a torch lead and a torch head, and an activation member operable with th... | 09/01/2009 |
| 7429715 | Modular plasma arc torch A modular plasma arc torch is provided that comprises a torch head and a torch lead, and a quick disconnect that is operatively engaged between the torch head and the torch lead. Accordingly, the torch head and torch lead may be quickly assembled and disassembled th... | 09/30/2008 |
| 7326874 | Vented shield system for a plasma arc torch Vented shield systems for plasma arc torches are provided that comprise a shield cup body defining a distal end portion, a vented retainer secured to the distal end portion of the shield cup body, and a shield cap secured to the vented retainer. The vented retainer ... | 02/05/2008 |
| D536009 | Cartridge body assembly for a plasma arc torch | 01/30/2007 |
| D535674 | Secondary spacer assembly for a plasma arc torch | 01/23/2007 |
| D535673 | Gas distributor for a plasma arc torch | 01/23/2007 |
| D535672 | Cartridge body for a plasma arc torch | 01/23/2007 |
| 7145099 | Tip gas distributor A tip gas distributor is provided that preferably comprises a plurality of swirl holes and a plurality of secondary gas holes, wherein the swirl holes direct a plasma gas to generate a plasma stream, and the secondary gas holes direct a secondary gas to stabilize th... | 12/05/2006 |
| 7145098 | Plasma arc torch A plasma arc torch is provided that comprises a set of torch consumable components secured to a torch head, wherein a supply of cooling fluid flows coaxially through the torch to cool torch components and a supply of plasma gas and secondary gas flows through the to... | 12/05/2006 |
| 7132619 | Plasma arc torch electrode A variety of electrodes for use in a plasma arc torch are provided that improve cooling between the electrode and an adjacent cathodic element such as a cathode. At least one passageway is formed between the electrode and the cathode for the flow of a fluid, e.g. co... | 11/07/2006 |
| 7126080 | Plasma gas distributor with integral metering and flow passageways A gas distributor for use in a plasma arc torch is provided that has at least one plasma gas passageway formed conjointly with a metering passageway, and at least one helical gas passageway formed along an interior portion of the gas distributor, wherein the helical... | 10/24/2006 |
| D525273 | Shield cap for a plasma arc torch | 07/18/2006 |
| 7071443 | Plasma arc torch A plasma arc torch is provided that comprises a set of torch consumable components secured to a torch head, wherein a supply of cooling fluid flows coaxially through the torch to cool torch components and a supply of plasma gas and secondary gas flows through the to... | 07/04/2006 |
| D524336 | Tip assembly for a plasma arc torch | 07/04/2006 |
| D523042 | Vented shield cap for a plasma arc torch | 06/13/2006 |
| D523043 | Shield cap for a plasma arc torch | 06/13/2006 |
| 7041935 | Apparatus and methods for connecting a plasma arc torch lead to a power supply A torch lead extension is provided that comprises a conduit having a distal end and a proximal end. The torch lead extension further comprises a distal connector member disposed at the distal end of the conduit and a proximal connector member disposed at the proxima... | 05/09/2006 |
| D519135 | Tip for a plasma arc torch | 04/18/2006 |
| 7022936 | Plasma arc torch trigger system A trigger system for operating a plasma arc torch is provided that comprises a selector that operates between at least a first operating position and a second operating position, wherein the first operating position operates the plasma arc torch in a first mode to d... | 04/04/2006 |
| 7019254 | Plasma arc torch A plasma arc torch is provided that comprises a set of torch consumable components secured to a torch head, wherein a supply of cooling fluid flows coaxially through the torch to cool torch components and a supply of plasma gas and secondary gas flows through the to... | 03/28/2006 |
| D517577 | Electrode for a plasma arc torch | 03/21/2006 |
| D517576 | Knurled electrode for a plasma arc torch | 03/21/2006 |
| 7005600 | Plasma arc torch tip A plasma arc torch is provided that comprises a set of torch consumable components secured to a torch head, wherein a supply of cooling fluid flows coaxially through the torch to cool torch components and a supply of plasma gas and secondary gas flows through the to... | 02/28/2006 |
| 6998566 | Plasma arc torch electrode A variety of electrodes for use in a plasma arc torch are provided that improve cooling between the electrode and an adjacent cathodic element such as a cathode. At least one passageway is formed between the electrode and the cathode for the flow of a fluid, e.g. co... | 02/14/2006 |
| 6989505 | Plasma arc torch consumables cartridge A consumables cartridge for use in a plasma arc torch is provided that comprises a cartridge body and at least one other consumable component such as a tip or an electrode, for example. The consumables cartridge provides for ease of use and replacement of the torch ... | 01/24/2006 |
| 6987238 | Plasma arc torch and method for improved life of plasma arc torch consumable parts A plasma arc torch and method for improving the life of the consumable parts of the plasma arc torch, including the electrode, the tip and the shield cap. The method includes turbulating gas as it flows over the exposed surfaces of the electrode, tip and shield cap ... | 01/17/2006 |
| D511663 | Retainer cap for a plasma arc torch | 11/22/2005 |
| D511280 | Plasma arc torch tip | 11/08/2005 |
| 6960737 | Gas flow pre-charge for a plasma arc torch A system for controlling gas flow from a gas source, through a gas conduit, and to a plasma arc torch during a transition from a cold flow when no arc is present to a hot flow when an arc is provided by the present invention. The system comprises a first solenoid in... | 11/01/2005 |
| 6946616 | Plasma arc torch cooling system A cooling system for a plasma arc torch is provided that comprises a coaxial fluid flow that improves cooling of components within the plasma arc torch and that provides a more compact torch design. The coaxial fluid flow, namely, the cooling fluid flow, is distribu... | 09/20/2005 |
| 6936786 | Dual mode plasma arc torch A dual mode plasma arc torch is provided that preferably comprises a start cartridge disposed between an electrode and a tip. In one form, the start cartridge comprises an initiator that is in electrical contact with the electrode and that is resiliently biased into... | 08/30/2005 |
| 6933461 | Tips and contact members having ridges for use in a contact start plasma arc torch A tip for a plasma arc torch includes a ridge for improved electrical contact with a starting member. ... | 08/23/2005 |
| 6919526 | Plasma arc torch head connections A plasma arc torch is provided that comprises torch head connections that are made between consumable components and a torch head independent of rotational alignment of the consumable components. Accordingly, connections for the flow of a cooling fluid, plasma gas, ... | 07/19/2005 |
| 6914211 | Vented shield system for a plasma arc torch Vented shield systems for plasma arc torches are provided that comprise a shield cup body defining a distal end portion, a vented retainer secured to the distal end portion of the shield cup body, and a shield cap secured to the vented retainer. The vented retainer ... | 07/05/2005 |
| D506440 | Socket connector | 06/21/2005 |
| D505963 | Electrode for a plasma arc torch | 06/07/2005 |
| 6903301 | Contact start plasma arc torch and method of initiating a pilot arc A contact start plasma arc torch is provided that comprises an electrode, a tip, and an initiator that is resiliently biased into contact with the tip, the initiator being movable against the resilient bias to separate from the tip and establish a pilot arc between ... | 06/07/2005 |
