Orbital welding apparatus
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United States of America Patent
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Dec 1, 1998
Issued Date -
N/A
app pub date -
Dec 3, 1996
filing date -
Mar 12, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An orbital welding apparatus (B) comprises a modular weld head apparatus (10) including a rotor assembly (20) which carries a welding electrode (26). The rotor assembly is rotated about an axis for welding abutting ends of tubular members positioned in alignment on the axis. The rotor assembly includes a C-shaped insulating rotor member (22) which has teeth (28) disposed around an outside periphery thereof. The insulating rotor member is configured to receive an electrically conductive member (24). The conductive member is insulated by the rotor member to reduce arcing from the conductive member to other components. A drive assembly (98) within the weld head assembly engages the insulating rotor member to rotate the rotor assembly about the axis during welding.
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