Pig launcher
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United States of America Patent
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-
Aug 9, 2005
Grant Date -
N/A
app pub date -
Oct 20, 2004
filing date -
Oct 20, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The ability to pig a pipeline is considered necessary and vital to most pipeline operations. The present invention provides a pig inserting apparatus and method designed to satisfy the need to Insert pigs for large diameter gasoline pipelines that are made of concrete and weigh in excess of 400 pounds. In the past, the industry has used ineffectively manpower or motorized vehicles to insert the pigs. This pig launcher uses a means for propelling the pig that includes: a spool rotatably mounted. The pair of cables is connected to the spool and engage the ends of the cantilevered arms for propelling the pig a pair of cantilevered arms, and a pair of cables of sufficient strength to firmly fasten onto the end of a pipeline.
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