The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2014
Filed:
Nov. 06, 2006
Herbert Martin, Weinstadt, DE;
Werner Schwager, Ludwigsburg, DE;
Martin Stiegler, Steinheim, DE;
Andreas Collmer, Vaihingen, DE;
Manfred Michelfelder, Höpfigheim, DE;
Herbert Martin, Weinstadt, DE;
Werner Schwager, Ludwigsburg, DE;
Martin Stiegler, Steinheim, DE;
Andreas Collmer, Vaihingen, DE;
Manfred Michelfelder, Höpfigheim, DE;
Durr Systems, Inc., Plymouth, MI (US);
Abstract
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.