Norrish
John Norrish, New South Wales AT
Patent application number | Description | Published |
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20100276396 | APPARATUS AND METHOD FOR WELDING - The present invention relates to arc welding torch and a method of extracting fume gas from a welding site. The torch comprises a metal electrode and at least one shield gas port adapted to direct a shield gas curtain around the metal electrode and a welding site. At least one shroud gas port is spaced radially outward from the shield gas port and adapted to impart to an exiting shroud gas a radially outward component of velocity. Fume gas is preferably extracted from a position radially intermediate the shield gas curtain and the shroud gas curtain. | 11-04-2010 |
John Norrish, Bulli AU
Patent application number | Description | Published |
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20090107970 | METHOD FOR CONTROLLING WELD QUALITY - The present invention relates to a method for controlling weld quality. The method comprises the steps of producing a shield gas curtain around the heat source and producing a shroud gas curtain spaced radially outward from the shield gas curtain, wherein the shroud gas curtain comprises a radially outward component of velocity. The shield gas curtain and the shroud gas curtain are configured to control the resultant mechanical and/or surface properties of the weld. The present invention also relates to a method for substantially confining and concentrating shield gas about the vicinity of a welding site, and a method for substantially recovering and reusing a shield gas in a welding operation. | 04-30-2009 |
John Norrish, Portsmouth GB
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20150270991 | WIRELESS TRANSMISSION MOBILE COMMUNICATION APPARATUSES - The present invention provides a wireless transmission mobile communication apparatus comprising a power supply unit; a transmitter unit, comprising an antenna, which transmitter unit is powered by the power supply unit; a control unit configured to control the operation of the apparatus; and an RF isolating unit. | 09-24-2015 |
Ronald Francis Norrish, Western Australia AU
Patent application number | Description | Published |
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20090212624 | TRACK CHAIN ASSEMBLY - A track link is provided for use with a track chain assembly. Each track link is provided with a mounting plate attached to its ground-engaging side, a track plate adapted to contiguously engage the mounting plate, and a removable fastening device to secure the track plate to the mounting plate. | 08-27-2009 |