US3718350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap ring coupling
Assignee: Motors Liquidation Co
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Filing: 1971-09-27
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Granted: 1973-02-27
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Expires: 1991-09-27
Abstract
Abstract A quick connect, snap ring coupling for conduits for fluids under pressure embodies a socket and plug which is inserted into the socket and which is in sealing relation with the socket when fully inserted therein. The plug carries a split retaining ring which is engagable in spaced apart annular shoulders in the socket for axial retention of the plug relative to the socket. The arrangement of the annular shoulders within the socket is such as to allow the plug to move axially outwardly with respect to a portion of the socket to an unsealed position to bleed the conduit of pressurized fluid after which the plug can be completely released from the socket.
Inventors
- 👤 L Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:39
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/088; F16L37/0885; Y; Y10; Y10S; Y10S285/00; Y10S285/921; Y10S285/924
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
199 words
A fluid conduit coupling comprising, in combination, an outer tubular member defining a socket, a tubular plug member slidably received in said socket and in sealing relation to said socket when fully inserted therein, said socket having a first annular groove and a second annular groove in axially spaced apart relation to each other around the inner periphery of said socket, with a tapered annular wall therebetween, an annular groove around the outer periphery of said plug adapted to mate with said first annular groove in said socket when said plug is in sealing relation to said socket and, a split retaining ring positioned in said annular groove in said plug, said ring being of a size to enter the socket when compressed in said annular groove in said plug, said tapered annular wall being tapered so as to effect compression of said split retaining ring in said annular groove in said plug when it is moved axially from said second annular groove to said first annular groove in said socket, said second annular groove being positioned to mate with said annular groove in said plug when said plug is positioned axially in said socket in nonsealing relation thereto.
Claim 2
Dependent Claim
199 words
A fluid conduit coupling comprising, in combination, an outer tubular member defining a socket, a tubular plug member slidably received in said socket and in sealing relation to said socket when fully inserted therein, said socket having a first annular groove and a second annular groove in axially spaced apart relation to each other around the inner periphery of said socket, with a tapered annular wall therebetween, an annular groove around the outer periphery of said plug adapted to mate with said first annular groove in said socket when said plug is in sealing relation to said socket and, a split retaining ring positioned in said annular groove in said plug, said ring being of a size to enter the socket when compressed in said annular groove in said plug, said tapered annular wall being tapered so as to effect compression of said split retaining ring in said annular groove in said plug when it is moved axially from said second annular groove to said first annular groove in said socket, said second annular groove being positioned to mate with said annular groove in said plug when said plug is positioned axially in said socket in nonsealing relation thereto.
Claim 3
Dependent Claim
42 words
A fluid conduit coupling according to claim 1 wherein said socket includes radial apertures therethrough in alignment with both said first annular groove and said second annular groove to permit a tool to be inserted therein to compress said snap retaining ring.
Claim 4
Dependent Claim
280 words
A fluid conduit coupling including a tubular male member and a complementary tubular female member, said male member having a portion with an annular groove therein and a reduced diameter plug end portion with an annular seal ring receiving groove therein, a compressible O-ring seal positioned in said seal ring receiving groove, said tubular female member having a tapered bore portion at one end and a plug receiving bore at its other end with a bore therebetween having a first annular groove and a second annular groove therein with a tapered wall therebetween, said annular groove in said male member being adapted to mate with said first annular groove when said male member is positioned in said female member with said plug portion in said plug receiving bore with said O-ring seal in sealing engagement between said male member and said female member and to mate with said second annular groove when said O-ring seal on said plug portion is out of sealing engagement with said bore of reduced diameter, a split retaining ring in said annular groove, said retaining ring being of a size to enter said socket when compressed in said annular groove, the wall of said tapered bore portion of said socket being adapted to effect compression of said split retaining ring in said annular groove when said male member is inserted into said female member and, said tapered annular wall being tapered so as to effect compression of said split retaining ring in said annular groove when said plug is moved axially so that said annular groove therein is moved from mating relation with said second annular groove toward said first annular groove in said socket.
Claim 5
Dependent Claim
280 words
A fluid conduit coupling including a tubular male member and a complementary tubular female member, said male member having a portion with an annular groove therein and a reduced diameter plug end portion with an annular seal ring receiving groove therein, a compressible O-ring seal positioned in said seal ring receiving groove, said tubular female member having a tapered bore portion at one end and a plug receiving bore at its other end with a bore therebetween having a first annular groove and a second annular groove therein with a tapered wall therebetween, said annular groove in said male member being adapted to mate with said first annular groove when said male member is positioned in said female member with said plug portion in said plug receiving bore with said O-ring seal in sealing engagement between said male member and said female member and to mate with said second annular groove when said O-ring seal on said plug portion is out of sealing engagement with said bore of reduced diameter, a split retaining ring in said annular groove, said retaining ring being of a size to enter said socket when compressed in said annular groove, the wall of said tapered bore portion of said socket being adapted to effect compression of said split retaining ring in said annular groove when said male member is inserted into said female member and, said tapered annular wall being tapered so as to effect compression of said split retaining ring in said annular groove when said plug is moved axially so that said annular groove therein is moved from mating relation with said second annular groove toward said first annular groove in said socket.
Claim 6
Dependent Claim
42 words
A fluid conduit coupling according to claim 3 wherein said female member has radial apertures therethrough in alignment with both said first annular groove and said second annular groove to permit insertion of the tool therein to compress said snap retaining ring.
References Cited (Backward Citations)
BE501139A
Cited
US3345085A
Cited
US3381983A
Cited
US3455578A
Cited
US3453005A
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US3540760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |