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Pub. No.:    WO/1980/002188    International Application No.:    PCT/SE1980/000092
Publication Date: 16.10.1980 International Filing Date: 27.03.1980
F16L 37/32 (2006.01), F16L 37/58 (2006.01), F42B 35/00 (2006.01), G03B 39/00 (2006.01)
Priority Data:
7902822 29.03.1979 SE
Abstract: front page image
(EN)Hydraulic coupling of the quick-connective type which comprises two coupling parts each with a built-in check-valve. In this type of couplings, a certain undesired oil leakage always occurs when the coupling is being disjointed. The present invention has the object to eliminate this oil leakage. It is proposed to provide a means (15) on one coupling half which is coupled-together state of the coupling sealingly encloses portions (24) of the coupling halves facing toward each other and encloses leaked hydraulic medium, and which when the coupling halves are being disjointed from each other follows along with one of them and forms between said portions (24) a space (36) increasing in volume in order to transfer enclosed hydraulic medium to a space (37) located behind said means before one of the coupling halves has been removed from said means, and in which space (37) the hydraulic medium remains until the coupling again is coupled together in order thereby to be transferred by the means (15) to the space (36) enclosed by said means between the portions (24) of the coupling halves facing toward each other.
(FR)Un accouplement hydraulique du type a connexion rapide comprend deux pieces d"accouplement ayant chacune une soupape de securite incorporee. Avec ce type d"accouplement, il se produit toujours une legere fuite d"huile indesirable lorsque l"on demonte l"accouplement. L"objet de l"invention est d"eliminer cette fuite d"huile. Des moyens (15) sont prevus sur une moitie d"accouplement qui, a l"etat accouple, renferme de maniere etanche des parties (24) des moities d"accouplement en vis a vis et renferment un milieu hydraulique qui a fuit, et qui, lorsque les moities d"accouplement sont demontees l"une de l"autre, suivent l"une d"elles et forment entre lesdites parties (24) un espace (36) de volume croissant de maniere a transferer le milieu hydraulique enferme dans un espace (37) situe derniere lesdits moyens avant que l"une des moities d"accouplement n"ait ete degagee desdits moyens, le milieu hydraulique restant dans l"espace (37) jusqu"a ce que l"accouplement soit remonte de maniere a etre transfere par les moyens (15) dans l"espace (36) enferme par lesdits moyens entre les parties (24) des moities d"accouplement montees en vis a vis.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)