Patent US3929357A successfully refreshed from Google Patents.
US3929357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick connect coupling with tandem snap rings
Assignee: Motors Liquidation Co
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Filing: 1974-11-13
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Granted: 1975-12-30
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Expires: 1994-11-13
Abstract
Abstract A quick connect coupling for conduits carrying a fluid under pressure comprises a socket and a plug which is inserted into the socket and which is in sealing relation with the socket when fully inserted therein. The plug carries a retainer cup, the rim of which has the leafs of a tandem snap ring retainer extending therethrough, the leafs being positioned to sequentially engage an annular radial shoulder on the exterior of the socket to effect axial positioning and retention of the plug within the socket.
Inventors
- 👤 Patsy Devincent
- 👤 John F Wiechart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:55
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/088; F16L37/0885; Y; Y10; Y10S; Y10S285/00; Y10S285/924
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
429 words
A conduit coupling comprising a tubular socket member having a stepped bore therethrough and defining at one end thereof a socket and having an annular flange on the exterior thereof providing a ramped forward surface adjacent to said one end which terminates at a shoulder extending radially inward, a tubular plug member having a plug portion at one end thereof slidably received in said socket and in sealing relation to said socket when fully inserted therein, said plug member including a tube having annular bead means on the exterior thereof defining a first shoulder and an axially spaced apart, opposed second shoulder, said first shoulder having a cylindrical pilot portion extending therefrom to the free end of said tubular plug member, and a seal ring encircling said pilot portion, a portion of said annular bead means including said first shoulder, said pilot portion and said seal ring defining said plug portion, said stepped bore being defined by a first annular wall extending from said one end and of a diameter to slidably receive said annular bead means defining said first shoulder, a second annular wall of reduced diameter with an intervening radial shoulder therebetween and a third annular wall of a diameter to slidably receive said pilot portion of said plug member with an intervening second radial shoulder therebetween, the axial extent of said third annular wall being greater than the axial extent of said pilot portion, whereby when said plug member is fully inserted into said socket, said first shoulder is in abutment with said radial shoulder, said first shoulder and said pilot portion forming with said second annular wall and said second radial shoulder a substantially enclosed annular cavity of a predetermined axial width and radial width in which said seal ring is compressibly received when said plug member is fully inserted into said socket member, and an outer retainer means, said outer retainer means including an apertured cup member operatively connected to said tubular plug member and having an annular rim extending over and encircling said plug portion, said rim having diametrically opposed axially spaced apart openings therethrough and a unitary tandem snap ring having a mounting base fixed to the exterior of said cup and having axial spaced apart pairs of spring legs extending therefrom through said openings, one pair of said spring legs being engageable with said shoulder when said plug portion is fully inserted in said socket and the other pair of said spring legs being engageable with said shoulder to retain said plug portion within but in nonsealing engagement with said socket.
Claim 2
Dependent Claim
429 words
A conduit coupling comprising a tubular socket member having a stepped bore therethrough and defining at one end thereof a socket and having an annular flange on the exterior thereof providing a ramped forward surface adjacent to said one end which terminates at a shoulder extending radially inward, a tubular plug member having a plug portion at one end thereof slidably received in said socket and in sealing relation to said socket when fully inserted therein, said plug member including a tube having annular bead means on the exterior thereof defining a first shoulder and an axially spaced apart, opposed second shoulder, said first shoulder having a cylindrical pilot portion extending therefrom to the free end of said tubular plug member, and a seal ring encircling said pilot portion, a portion of said annular bead means including said first shoulder, said pilot portion and said seal ring defining said plug portion, said stepped bore being defined by a first annular wall extending from said one end and of a diameter to slidably receive said annular bead means defining said first shoulder, a second annular wall of reduced diameter with an intervening radial shoulder therebetween and a third annular wall of a diameter to slidably receive said pilot portion of said plug member with an intervening second radial shoulder therebetween, the axial extent of said third annular wall being greater than the axial extent of said pilot portion, whereby when said plug member is fully inserted into said socket, said first shoulder is in abutment with said radial shoulder, said first shoulder and said pilot portion forming with said second annular wall and said second radial shoulder a substantially enclosed annular cavity of a predetermined axial width and radial width in which said seal ring is compressibly received when said plug member is fully inserted into said socket member, and an outer retainer means, said outer retainer means including an apertured cup member operatively connected to said tubular plug member and having an annular rim extending over and encircling said plug portion, said rim having diametrically opposed axially spaced apart openings therethrough and a unitary tandem snap ring having a mounting base fixed to the exterior of said cup and having axial spaced apart pairs of spring legs extending therefrom through said openings, one pair of said spring legs being engageable with said shoulder when said plug portion is fully inserted in said socket and the other pair of said spring legs being engageable with said shoulder to retain said plug portion within but in nonsealing engagement with said socket.
Claim 3
Dependent Claim
378 words
A conduit coupling comprising a tubular plug member including a tube having an annular bead means on the exterior thereof providing at least a first shoulder and a second shoulder axially spaced from said first shoulder and having a cylindrical pilot portion extending from said first shoulder to a free end of said tube and a seal ring encircling said pilot portion, a tubular socket member having a stepped bore extending from one end and defining a socket with internal annular walls including a first wall extending from said one end and of a diameter greater than the outside diameter of said bead means, a second wall providing an annular seat for said seal ring with an intervening radial shoulder therebetween and a third wall slidably receiving said pilot portion with an intervening second radial shoulder between said second wall and said third wall, said tubular plug member being slidably received in said socket and in sealing relation thereto when fully inserted therein with said first shoulder in abutment against said radial shoulder, said first shoulder and said pilot portion of said tubular plug and said second wall and said second radial wall of said socket member defining a substantially enclosed annular cavity of a predetermined axial width and radial width in which said seal ring is compressibly received when said tubular plug is fully inserted into said socket member, said tubular socket member having an annular radial flange on the exterior providing a ramped forward surface and a radial shoulder and, an outer retainer means positioned on said tubular plug member for engagement against said second shoulder, said outer retainer means including an annular rim means encircling said plug portion in radial spaced relationship thereto, said rim means having axial and circumferentially spaced apart openings therethrough, and a unitary tandem snap ring means supported by said rim means and providing axially spaced apart pairs of spring legs extending through said rim through said openings therein and positioned to be engaged by said ramped forward surface whereby each pair of spring legs is adapted to be sequentially deflected outward and to snap inward to engage said radial shoulder of said tubular socket member thereby retaining said tubular plug in a sealing or a nonsealing position in said socket.
Claim 4
Dependent Claim
378 words
A conduit coupling comprising a tubular plug member including a tube having an annular bead means on the exterior thereof providing at least a first shoulder and a second shoulder axially spaced from said first shoulder and having a cylindrical pilot portion extending from said first shoulder to a free end of said tube and a seal ring encircling said pilot portion, a tubular socket member having a stepped bore extending from one end and defining a socket with internal annular walls including a first wall extending from said one end and of a diameter greater than the outside diameter of said bead means, a second wall providing an annular seat for said seal ring with an intervening radial shoulder therebetween and a third wall slidably receiving said pilot portion with an intervening second radial shoulder between said second wall and said third wall, said tubular plug member being slidably received in said socket and in sealing relation thereto when fully inserted therein with said first shoulder in abutment against said radial shoulder, said first shoulder and said pilot portion of said tubular plug and said second wall and said second radial wall of said socket member defining a substantially enclosed annular cavity of a predetermined axial width and radial width in which said seal ring is compressibly received when said tubular plug is fully inserted into said socket member, said tubular socket member having an annular radial flange on the exterior providing a ramped forward surface and a radial shoulder and, an outer retainer means positioned on said tubular plug member for engagement against said second shoulder, said outer retainer means including an annular rim means encircling said plug portion in radial spaced relationship thereto, said rim means having axial and circumferentially spaced apart openings therethrough, and a unitary tandem snap ring means supported by said rim means and providing axially spaced apart pairs of spring legs extending through said rim through said openings therein and positioned to be engaged by said ramped forward surface whereby each pair of spring legs is adapted to be sequentially deflected outward and to snap inward to engage said radial shoulder of said tubular socket member thereby retaining said tubular plug in a sealing or a nonsealing position in said socket.
Claim 5
Dependent Claim
93 words
A conduit coupling according to claim 2 wherein said tandem snap ring includes an arcuate shaped base segment fixed to the exterior of said rim means, and axially spaced apart pairs of spring legs, said spring legs being connected together at one end by said base segment, each said spring leg including an intermediate semi-circular lock segment portion inclined at an acute angle to the axis of said rim means in a direction corresponding to said ramped forward surface of said tubular socket when said tubular socket is mated to said plug member.
References Cited (Backward Citations)
US1533886A
Cited
US3453005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |