E.i. Dupont De Nemours and Company

James M Wiggins

James R Hunter, Jr

Tom Edward Estep

Jean Francois Woll

Carl E Vorhees

Germain Schilz

Ronald P Hoffman

Jean Joseph Muller

This invention relates to an arrangement for sealing a closed chamber in which equipment is to be replaced and especially to a chamber in which equipment is to be replaced while the chamber is to be maintained closed. The arrangement includes a channel filled with a fluid, such as water, and a skirt arranged to extend into the fluid to form the seal. As the skirt extends down into the liquid, a portal space is formed at the opening in the chamber and the opening preferably includes a gate for closing the chamber from the portal space and the outside.

Arrangement for sealing a closed production system

This invention relates to a coupling system for connecting one or more fluid conduits wherein the system is adapted for lateral entry of one pipe or conduit to the other. The coupling system is also suited for making a connection in an environment which is relatively inaccessible to personnel and may be remotely operated.

Lateral entry remotely operated coupling system

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Midlothian, VA, United States of America

James M Wiggins