Pipe joints or couplings – With assembly means or feature – With holding means functioning only during transportation...
Patent
1997-08-19
1998-12-08
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
With holding means functioning only during transportation...
285276, 285321, 285351, F16L 5500
Patent
active
058459448
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a coupling for pressurized medium, comprising a stud member and a socket member into which the stud member can be inserted axially, whereby the stud member and the socket member can be mutually locked in a completely coupled position by means of a locking ring which can be brought into engagement with an annular locking ring groove in the outer surface of the stud member and in the inner surface of the socket member, and the stud member and the socket member have circumferential contact surfaces and/or grooves for two sealing rings, while the socket member has two locking ring grooves.
Such a coupling permits mutual rotation of the stud member and the socket member.
A coupling of this type is known, having a locking ring which, when the stud member has been moved completely into place to its normal position in the socket member, is engaged in a locking ring groove in the stud member and the socket member, respectively, and keeps these together. In an embodiment the socket member has a single locking ring groove, which is so deep that it can completely contain the locking ring, while the stud member has two shallower locking ring grooves which can only partly contain the locking ring. In the case that the stud member and the socket member are incompletely coupled together and the locking ring is situated in the axially innermost locking ring groove in the stud member, the stud member and the socket member can be pushed completely together, in that the locking ring is forced completely into the groove in the socket member, because the axially innermost groove in the stud member is bevelled along the axially outermost side, and an axial mutual shifting of the stud member and the socket member is made possible, because the locking ring does not project into the axially innermost groove in the stud member. Thereby, the locking ring can snap into the axially outermost locking ring groove in the stud member and lock the stud member and the socket member in a completely coupled position. Thus, the locking ring permits that a locking between the stud member and the socket member can be achieved even when these are not moved completely together. In this condition a pressurized medium will not flow freely out between the stud member and the socket member, because some degree of sealing is maintained by the axially innermost sealing ring, while the axially outermost sealing ring is not in contact with the socket member. By "axially innermost" and "axially outermost" is meant relatively to the insertion mouth of the socket member. However, a leakage will occur which indicates that the stud member and the socket member are not completely coupled together. In another embodiment the stud member has only one locking ring groove, which is sufficiently deep for containing the locking ring, and the socket member has an axially innermost and an axially outermost locking ring groove. In order to permit moving of the locking ring from the axially outermost to the axially innermost locking ring groove, while the locking ring is situated in the locking ring groove in the stud member, the locking ring must be compressed into the groove in the stud member. In order to move the stud member and the socket member together to an incompletely coupled position the locking ring must, when fit into the socket member, be expanded in order to permit the passage of an external bevelled edge on the stud member. When the locking ring is fit on the stud member it must be compressed in order to pass an internal bevelled edge in the socket member. This expansion and compression, respectively, cause a relatively large resistance against insertion. This resistance decreases somewhat when the bevelled edge has passed the locking ring, whereupon the locking ring enters one of the locking ring grooves, without this being sensed by the operator as a change of the resistance.
When such a known coupling is incompletely coupled the locking ring must, depending on which embodiment is considered, be forced out of the locking r
REFERENCES:
patent: 2511386 (1950-06-01), Warren
patent: 3574359 (1971-04-01), Klein
patent: 3584902 (1971-06-01), Vyse
patent: 3929357 (1975-12-01), DeVincent et al.
patent: 4707000 (1987-11-01), Torgardh
patent: 4783100 (1988-11-01), Klein
Enger Jens Olav
Villanger Kjell
Arola Dave W.
Raufoss Technology A/S
LandOfFree
Coupling for pressurized medium does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coupling for pressurized medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coupling for pressurized medium will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-170201