Title: Inflatable lip seal for pipes

Abstract: A lip-seal for sealing the junction between two parts includes a body for mounting on one part, a sealing lip extending therefrom for application against the other part, and an inflatable chamber defined between the body, the lip and a diaphragm extending between, and connected to, the lip and the body, the arrangement being such that on inflation of the chamber the profile of the lip is modified so that it is moved away from the other part to permit the other part to be assembled with the one part without damage to the lip seal and without premature application of the lip to the other part.

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Inventors: Lecordier, Michel G. (Marseille, FR)

Application Number: 696442
Filing Date: 1976-06-15
Publication_date: 1977-08-30
Assignee: Compagnie Francaise des Petroles (Paris Cedex, FR); Etudes Petrolieres Marines (Paris, FR); Ateliers et Chantiers de Bretagne (Nantes, FR); Compagnie Maritime D'Expertises (Marseille, FR); Compagnie Generale Pour Les Developpements Operat
Primary Class(es): 277/605 277/606
Other Classes:
US Patent Ref:

2943874	Jul, 1960	Valdi et al.	277/34.
3337222	Aug, 1967	Smith et al.	277/34.

Other Refs:
Primary Examiner: Aegerter, Richard E.
Assistant Examiner: Footland, L.
Attorney: Sughrue, Rothwell, Mion, Zinn and Macpeak