Title: Seal for sealing between two telescopic tubes and sealing device using such seal

Abstract: A sealing device for sealing between two telescopic tubes which in one relative position come to rest one on the other, the device comprises an inflatable seal disposed between said tubes and means for supplying fluid to said seal to inflate said seal, which means is controlled by the force arising when one tube comes to rest and bears on the other tube. The means for inflating the seal may comprise a jack which is connected to the seal and subject to the weight of one of the tubes when it comes to bear on the other tube.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Heitz, Pierre (Puteaux, FR)

Application Number: 942907
Filing Date: 1978-09-15
Publication_date: 1979-12-25
Assignee: Compagnie d'Etudes et de Realisations de Cybernetique (Fontenay-Sous-Bois, FR)
Primary Class(es): 277/605 141/287, 141/312, 141/374
Other Classes:
US Patent Ref:

1319464	Oct, 1919	Durbin	277/34.
1803665	May, 1931	Dennis	277/28.
2369823	Feb, 1945	Freed	277/34.
2458631	Jan, 1949	Parks	277/34.
2648554	Aug, 1953	Gilbert	277/34.
3103958	Sep, 1963	Rath	141/312.
3951684	Apr, 1976	La Prad et al.	277/34.
4068852	Jan, 1978	Anglade	277/34.
4082298	Apr, 1978	Sanford	277/34.

Other Refs: 616799

Jan, 1949	GB

Primary Examiner: Ward, Jr., Robert S.
Assistant Examiner:
Attorney: Haseltine, Lake & Waters