Hose coupling
AssigneeClayton Dewandre Company Limited
InventorMichael J. Hawker
Life of this patent
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Abstract
A hose coupling for tractor-trailer braking systems which produce sealed hydraulic connections even in high pressure circuits, with minimum fluid loss on coupling and de-coupling. The coupling comprise male and female members which when brought together displace a sleeve along the spigot portion of the female member and simultaneously displace a plug along the bore of the male member to uncover sets of radial ports communicating respectively with supply and return passages to establish hydraulic flow and return paths through the coupling. The coupling also has means for locking the two members together.
Claims9
A hose coupling for coupling and uncoupling between high pressure hydraulic system having a high pressure hydraulic source, and a hydraulic circuit that is pressure dependent upon the high pressure hydraulic source, said hose coupling comprising:
- (a) a female coupling member including a tubular body open at one end and having a rigid axially-disposed spigot portion, supply and return passages in the spigot portion and leading to radial ports in the periphery thereof, and a sleeve sliding on the spigot portion and biased to a position to close the ports of said female coupling member;
- (b) a complementary male coupling member adapted to enter the female coupling member, said male coupling member defining an axial bore which is adapted to receive with a sealed sliding fit the spigot portion of the female coupling member, the male coupling member also having supply and return passages leading to radial ports disposed radially inwardly toward the bore defined by said male coupling member and a plug or spool slidable in the bore and biased into a position to close the ports of said male coupling member;
- (c) the female and male members being cooperative such that when the two members are coupled together the sleeve is displaced along the spigot portion of the female member to uncover the supply and return ports of said female member, and simultaneously the plug is displaced along the bore of the male member to uncover the supply and return ports of said male member, with the supply and return ports of said female member cooperating with the corresponding ports of said male member in fluid communication to establish hydraulic flow and return paths through the coupling;
- (d) the supply passage of one of said coupling members being connected to the high pressure hydraulic source, the return port of said one coupling member being disposed outwardly of the supply port relative to the distal end of said one coupling member;
- (e) the supply port of said other coupling member being disposed outwardly of the return port of said other coupling member relative to the distal end of said other coupling member;
- and
- (f) releasable means for locking the two coupling members together in their operative condition.
A hose coupling comprising a female coupling member including a tubular body open at one end and having a rigid axially-disposed spigot portion, supply and return passages in the spigot portion and leading to radial ports in the periphery thereof and of which the return port is disposed outwardly of the supply port relative to the distal end of said spigot, and a sleeve sliding on the spigot portion and biased to a position to close the ports of said female coupling member, and a complementary male coupling member adapted to enter the female coupling member, said male coupling member defining an axial bore which is adapted to receive with a sealed sliding fit the spigot portion of the female coupling member, the male coupling member also having supply and return passages leading to radial ports disposed radially inwardly toward the bore, defined by said male coupling member with the supply port disposed outwardly of the return port relative to the distal end of said male coupling member, and a plug or spool slidable in the bore and biased into a position to close the ports of said male coupling member, the arrangement being such that when the two members are coupled together the sleeve is displaced along the spigot portion of the female member to uncover the supply and return ports of said female member, and simultaneously the plug is displaced along the bore of the male member to uncover the supply and return ports of said male member, with the supply and return ports of said female member cooperating with the corresponding ports of said male member in fluid communication to establish hydraulic flow and return paths through the coupling, releasable means also being provided for locking the two coupling members together in their operative condition.
Dependencies are inferred from the claim text.