Pipe joints or couplings – With means blocking release of holding means
Patent
1996-10-31
1999-02-16
Nicholson, Eric K.
Pipe joints or couplings
With means blocking release of holding means
285 92, 285354, F16L 3500
Patent
active
058712399
ABSTRACT:
A threaded coupling assembly is provided for interconnecting the ends of first and second fluid-carrying conduit members in fixed releasably locking relationship. First and second coupling members are circumferentially engageable with the ends of the conduit members to hold them in fluid communication. The coupling members are rotatable in a locking direction and in an opposite unlocking direction. The first coupling member has a peripheral facing surface with a pair of annular slots, each of a different length and width. The second coupling member has a lock ring longitudinally slidable thereon with a facing surface having a pair of annular raised locking tabs. Each locking tab is of a predetermined height but of a different length and width which corresponds to the respective length and width of the annular slots. A resilient annular spring urges the lock ring toward the first coupling member so that the locking tabs engage their respective slots when the coupling is tightened to a predetermined extent during rotation in the locking direction to releasably and positively lock the coupling. An indicator stripe is provided on the peripheral edge of the first coupling member which is exposed before the locking tabs and slots are engaged. The indicator stripe is no wider than the height of the locking tabs so that it is covered by the lock ring when the lock ring snaps into locking engagement to provide a visual indication to the mechanic that the coupling assembly is positively locked.
REFERENCES:
patent: 3201149 (1965-08-01), Bragg
patent: 3999825 (1976-12-01), Cannon
patent: 4008937 (1977-02-01), Filippi
patent: 4249786 (1981-02-01), Mahoff
patent: 4285564 (1981-08-01), Spinner
patent: 4346428 (1982-08-01), Gale
patent: 4757593 (1988-07-01), Pallini, Jr. et al.
patent: 4785858 (1988-11-01), Valentini et al.
patent: 4808117 (1989-02-01), Gale et al.
patent: 4881760 (1989-11-01), Runkles et al.
patent: 4900070 (1990-02-01), Runkles et al.
patent: 4928202 (1990-05-01), Gale et al.
patent: 5188398 (1993-02-01), Parimore, Jr. et al.
patent: 5215336 (1993-06-01), Worthing
patent: 5348349 (1994-09-01), Sloane
patent: 5350200 (1994-09-01), Peterson et al.
Boscaljon Ronald W.
Jewell David E.
Rossway Ronald A.
Nicholson Eric K.
Stanley Aviation Corporation
LandOfFree
Positive lock coupling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Positive lock coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positive lock coupling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2056885