BACK PURGING ROBOTIC CRAWLER
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Sep 21, 2023
filing date -
Sep 21, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
A robotic crawler for back purging a weld location in a piping circuit includes a body, one or more conveyors coupled to the body for transporting the robotic crawler within the piping circuit, first and second seal assemblies configured to generate an interference seal with an interior of the piping circuit, a pair of extendable arms, each extendable arm supporting a respective one of the first and second seal assemblies on an opposite side of the body, each respective extendable arm selectively extendable and retractable with respect to the body to adjust a position of the respective seal assembly with respect to the body, and an inert gas flow valve for providing an inert gas into a sealed area defined between the first and second seal assemblies.
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