US3851666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling assembly
Assignee: Hansen Manufacturing Co Inc
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Filing: 1973-03-09
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Granted: 1974-12-03
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Expires: 1993-03-09
Abstract
Abstract An improved quick-connect coupling assembly includes a plug and socket which are interconnectable to connect a pair of conduits in fluid communication. As the plug and socket are interconnected, a valve member in the socket is moved from a closed position blocking fluid flow through the socket to an open position. This valve member includes a frustro-conical pilot portion which functions to guide movement of the valve member relative to a valve seat. The largest or major end of the pilot portion has a diameter which is less than the diameter of a circular opening circumscribed by the valve seat. A seal ring is disposed adjacent to the major end of the pilot portion and has an outside diameter which is greater than the diameter of the major end of the pilot protion. Adjacent to the seal ring is a circular support plate having an external diameter which is greater than the diameter of the seal ring. As the plug and socket are disconnected and the valve is closed, the pilot portion passes through the opening and the seal ring moves into sealing engagement with the valve seat. When the valve is closed, the support plate engages the valve seat and prevents the application of a full static load by the valve member against the seal ring while still allowing for adequate pressure to provide a fluid tight seal between the valve seat and seal ring.
Inventors
- 👤 H Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:04
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/24; F16L37/244; F16L37/248; F16L37/28; F16L37/30; F16L37/32; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
488 words
A coupling assembly operable between a connected condition interconnecting first and second conduits and a disconnected condition, said coupling assembly comprising plug and socket means for connecting the first and second conduits in fluid communication, said socket means including a socket body defining a first valve chamber having inlet and outlet openings through which fluid enters and leaves said first Valve chamber and first valve means for blocking fluid flow through said socket means when said coupling assembly is in the disconnected condition, said first valve means including a first frustro-conical valve seat connected with said socket body and circumscribing one of said openings to said first valve chamber, a first valve member disposed in said first valve chamber and movable relative to said first valve seat between an open position and a closed position, said first valve member including a cylindrical nose portion, a frustro-conical pilot portion disposed inwardly of said nose portion with a minor end of said pilot portion connected to the nose portion and a major end of the pilot portion spaced inwardly of the nose portion, said major end of said pilot portion having a diameter which is less than the diameter of said one of said openings, annular recess means disposed inwardly of said major end of said pilot portion for receiving an annular seal member, an annular seal member disposed in said recess means, said seal member having an outside diameter which is greater than the diameter of the major end of said frustro-conical pilot portion and the diameter of said one of said openings, a circular support portion disposed inwardly of said annular seal member and having a leading end with an external diameter which is greater than the external diameter of said annular seal, said leading end of said circular support portion having a circular support surface which forms an inner side of said recess means, and first spring means for urging said first valve member toward the closed position, said major end of said pilot portion being disposed outwardly of said first valve seat when said first valve member is in the closed position to enable said seal member to be pressed against said first valve seat under the influence of said spring means, said leading end of said circular support portion being disposed in abutting pressure engagement with said first valve seat and an inner side of said seal member when said first valve member is in the closed position to press said seal member against said first valve seat and to limit the pressure applied to said seal member to thereby prevent excessive deformation of said seal member, said plug means including a plug body defining a second valve chamber having inlet and outlet openings through which fluid enters and leaves said second valve chamber and second valve means for blocking fluid flow through said plug means when said coupling assembly is in the disconnected condition.
Claim 2
Dependent Claim
488 words
A coupling assembly operable between a connected condition interconnecting first and second conduits and a disconnected condition, said coupling assembly comprising plug and socket means for connecting the first and second conduits in fluid communication, said socket means including a socket body defining a first valve chamber having inlet and outlet openings through which fluid enters and leaves said first Valve chamber and first valve means for blocking fluid flow through said socket means when said coupling assembly is in the disconnected condition, said first valve means including a first frustro-conical valve seat connected with said socket body and circumscribing one of said openings to said first valve chamber, a first valve member disposed in said first valve chamber and movable relative to said first valve seat between an open position and a closed position, said first valve member including a cylindrical nose portion, a frustro-conical pilot portion disposed inwardly of said nose portion with a minor end of said pilot portion connected to the nose portion and a major end of the pilot portion spaced inwardly of the nose portion, said major end of said pilot portion having a diameter which is less than the diameter of said one of said openings, annular recess means disposed inwardly of said major end of said pilot portion for receiving an annular seal member, an annular seal member disposed in said recess means, said seal member having an outside diameter which is greater than the diameter of the major end of said frustro-conical pilot portion and the diameter of said one of said openings, a circular support portion disposed inwardly of said annular seal member and having a leading end with an external diameter which is greater than the external diameter of said annular seal, said leading end of said circular support portion having a circular support surface which forms an inner side of said recess means, and first spring means for urging said first valve member toward the closed position, said major end of said pilot portion being disposed outwardly of said first valve seat when said first valve member is in the closed position to enable said seal member to be pressed against said first valve seat under the influence of said spring means, said leading end of said circular support portion being disposed in abutting pressure engagement with said first valve seat and an inner side of said seal member when said first valve member is in the closed position to press said seal member against said first valve seat and to limit the pressure applied to said seal member to thereby prevent excessive deformation of said seal member, said plug means including a plug body defining a second valve chamber having inlet and outlet openings through which fluid enters and leaves said second valve chamber and second valve means for blocking fluid flow through said plug means when said coupling assembly is in the disconnected condition.
Claim 3
Dependent Claim
137 words
A coupling assembly as set forth in claim 1 wherein said second valve means includes a second valve seat connected with said plug body, a second valve member disposed in said second valve chamber, and second spring means for urging said second valve member toward said second valve seat, said second valve member having an outer surface means for engaging said nose portion of said first valve member upon operation of said coupling assembly from the disconnected condition to the connected condition, said first spring means having a higher spring rate than said second spring means to provide for movement of said second valve member toward the open condition prior to initiation of movement of said first valve member toward the open condition upon operation of said coupling assembly from the disconnected condition to the connected condition.
Claim 4
Dependent Claim
133 words
A coupling assembly as set forth in claim 1 wherein said socket body includes means for defining a generally cylindrical and internally threaded passage disposed in a coaxial relationship with said one of said inlet and outlet openings and an externally threaded member disposed in threaded engagement with said internally threaded passage, said externally threaded member including surface means for defining an axially extending cavity, said valve means further including guide means disposed in engagement with said externally threaded member for guiding movement of said first valve member between the open and cLosed positions, said first valve member having an inner end portion which extends into said cavity to a greater extent when said first valve member is in the open position than when said first valve member is in the closed position.
Claim 5
Dependent Claim
83 words
A coupling assembly as set forth in claim 3 wherein said externally threaded member includes a cylindrical wall projecting axially toward said one of said openings and defining at least a portion of said cavity, said guide means including a main portion extending across an outer end of said cylindrical wall in a direction transverse to the direction of movement of said valve member between the open and closed positions and defining an opening through which said valve member extends into said cavity.
Claim 6
Dependent Claim
40 words
A coupling assembly as set forth in claim 4 wherein said guide means further includes a plurality of legs extending transversely to said main portion of said guide means and are disposed adjacent to an outer surface of said wall.
References Cited (Backward Citations)
US2428637A
Cited
US2665928A
Cited
US2896977A
Cited
US2823048A
Cited
US3155402A
Cited
US3144237A
Cited
US3200839A
Cited
US3236251A
Cited
US3251574A
Cited
US3428076A
Cited
US3532115A
Cited
US3537478A
Cited
US3605793A
Cited
US3664375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |