Scraper pig

A pig traversable through a conduit to deliver a liquid, such as a coating material, having a resilient flexible, generally frustoconical sealing lip which is resiliently biased against an internal surface of the conduit and a resilient biasing member engaging and biased against an under surface of...

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Bibliographic Details
Main Authors MARTIN HERBERT, STIEGLER MARTIN, SCHWAGER WERNER, COLLMER ANDREAS, MICHELFELDER MANFRED
Format Patent
LanguageEnglish
Published 18.03.2014
Subjects
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
ATOMISING APPARATUS
CLEANING
CLEANING IN GENERAL
NOZZLES
PERFORMING OPERATIONS
PREVENTION OF FOULING IN GENERAL
SPRAYING APPARATUS
SPRAYING OR ATOMISING IN GENERAL
TRANSPORTING
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Summary:A pig traversable through a conduit to deliver a liquid, such as a coating material, having a resilient flexible, generally frustoconical sealing lip which is resiliently biased against an internal surface of the conduit and a resilient biasing member engaging and biased against an under surface of the sealing lip, biasing the sealing lip against an internal surface of the conduit. The disclosed embodiments of the resilient biasing member include annular coil springs and serpentine annular metal springs which may be U-shaped in cross-section, including a first leg received against the under surface of the sealing lip and a second leg received against the pig body portion.
Bibliography:Application Number: US20060593319