H - Electricity – 01 – B
Patent
H - Electricity
01
B
337/51, 277/68
H01B 17/30 (2006.01) H02G 15/04 (2006.01) H02K 5/22 (2006.01) H02K 5/08 (2006.01) H02K 5/12 (2006.01)
Patent
CA 1050130
Abstract of the Disclosure The invention relates to a duct for elongated bodies, such as electric current conductors, which duct is vacuum tight and contains no welded joints, and is particularly suitable for use with combination of materials which are difficult or impossible to weld. In a known pipe duct a joint is made between an aluminium vessel wall and a steel pipe. The joint is vacuum tight and is obtained by bringing and maintaining an aluminium collar, which is fixed on the vessel wall, at a given pressure, as a result of which the collar material is plastically deformed and penetrates into the end of the steel pipe which is provided with sharp edges. Although a vacuum tight joint is obtained without welding it is relatively complicated and therefore expensive. Producing the vacuum tight joint, and specifically the plastic deformation, furthermore requires the assembly of parts to be placed in a press. The invention aims at avoiding the aformentioned dis- advantages by using a duct for elongated bodies such as, for example, electric current conductors, which duct is very simple to fit and for which a simple O ring functions as the vacuum tight seal which is retained in place and held under compression with the aid of a clamp ring provided with a flexible part which extends along its periphery. The O ring is arranged between the so-called lid of the duct and a recess in the space in which the duct is fitted.
252476
Ijlstra Hendrik J.
Van Der Boogaard Gerardus J. M.
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