US3827728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe connectors
Assignee: Vetco Gray LLC
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Filing: 1972-10-30
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Granted: 1974-08-06
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Expires: 1992-10-30
Abstract
Abstract A connector particularly useful in securing sections of an underwater oil well marine riser together, including a pin member received in a box member, the pin and box members being secured together by a plurality of lock dogs, or the like, in the box member forced radially inwardly within a groove in the pin member, the groove and dogs having coengaging cam surfaces exerting an axial thrust between the pin and box members, compressing the pin member against the box in metal-to-metal sealing contact, the pin member being retained in compression to store energy therein and compensate for tensile loads imposed on the pin member so as to maintain the metal-to-metal sealing contact.
Inventors
- 👤 J Hynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:36
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/06; F16L25/065; E; E21; E21B; E21B17/00; E21B17/02; E21B17/08; E21B17/085; E21B17/0853; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/038; F16L37/00; F16L37/56
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
181 words
In a connector: a metallic tubular pin member having an outer peipheral groove and a tapered end portion; a metallic tubular box member telescopically disposed over said pin member and having a tapered seat engaged by said end portion; lock means in said box member shiftable radially thereof into said groove; said pin member and lock means having coengageable tapered surfaces, said pin member surface being provided by a side of said groove; means for shifting said lock means radially inwardly of said groove to force said lock means tapered surface against said pin member tapered surface and shift said pin member axially of said box member to force said tapered end portion against said tapered seat and provide a metal-to-metal sealing contact therebetween; said tapered end portion and tapered seat being disposed at an angle of about 10* to 30* to the common axis of said pin member and box member; said coengageable tapered surfaces being disposed at an angle of about 5* to 20* to a plane normal to the common axis of said pin member and box member.
Claim 2
Dependent Claim
181 words
In a connector: a metallic tubular pin member having an outer peipheral groove and a tapered end portion; a metallic tubular box member telescopically disposed over said pin member and having a tapered seat engaged by said end portion; lock means in said box member shiftable radially thereof into said groove; said pin member and lock means having coengageable tapered surfaces, said pin member surface being provided by a side of said groove; means for shifting said lock means radially inwardly of said groove to force said lock means tapered surface against said pin member tapered surface and shift said pin member axially of said box member to force said tapered end portion against said tapered seat and provide a metal-to-metal sealing contact therebetween; said tapered end portion and tapered seat being disposed at an angle of about 10* to 30* to the common axis of said pin member and box member; said coengageable tapered surfaces being disposed at an angle of about 5* to 20* to a plane normal to the common axis of said pin member and box member.
Claim 3
Dependent Claim
35 words
In a connector as defined in claim 1; said angle of disposition of said tapered end portion and tapered seat being about 20*; said angle of disposition of said coengageable tapered surfaces being about 10*.
Claim 4
Dependent Claim
118 words
In a connector as defined in claim 1; said box member having a shoulder substantially normal to its axis at the smaller end of its tapered seat; said pin member having an end surface substantially normal to its axis at the smaller end of its tapered end portion engageable in metal-to-metal contact with said box shoulder after engagement of said tapered end portion with said tapered seat; said shifting means and lock means being constructed and arranged to exert sufficient force on said pin member to axially slide said tapered end portion along said seat to deform said end portion radially inwardly to an extent limited by subsequent engagement of said pin member end surface with said shoulder.
Claim 5
Dependent Claim
145 words
In a connector as defined in claim 1; said angle of disposition of said tapered end portion and tapered seat being about 20*; sAid angle of disposition of said coengageable tapered surfaces being about 10*; said box member having a shoulder substantially normal to its axis at the smaller end of its tapered seat; said pin member having an end surface substantially normal to its axis at the smaller end of its tapered end portion engageable in metal-to-metal contact with said box shoulder after engagement of said tapered end portion with said tapered seat; said shifting means and lock means being constructed and arranged to exert sufficient force on said pin member to axially slide said tapered end portion along said seat to deform said end portion radially inwardly to an extent limited by subsequent engagement of said pin member end surface with said shoulder.
Claim 6
Dependent Claim
63 words
In a connector as defined in claim 1; said lock means comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge said lock members radially inwardly upon turning of said screws in one direction.
Claim 7
Dependent Claim
92 words
In a connector as defined in claim 1; said lock means comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge said lock members radially inwardly upon turning of said screws in one direction; said screws and lock members having coengageable means for moving said lock members radially outwardly of said pin member groove upon turning of said screws in the opposite direction.
Claim 8
Dependent Claim
90 words
In a connector as defined in claim 1; said angle of disposition of said tapered end portion and tapered seat being about 20*; said angle of disposition of said coengageable tapered surfaces being about 10*; said lock means comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge said lock members radially inwardly upon turning of said screws in one direction.
Claim 9
Dependent Claim
119 words
In a connector as defined in claim 1; said angle of disposition of said tapered end portion and tapered seat being about 20*; said angle of disposition of said coengageable tapered surfaces being about 10*; said lock means comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge said lock members radially inwardly upon turning of said screws in one direction; said screws and lock members having coengageable means for moving said lock members radially outwardly of said pin member groove upon turning of said screws in the opposite direction.
Claim 10
Dependent Claim
173 words
In a connector as defined in claim 1; said box member having a shoulder substantially normal to its axis at the smaller end of its tapered seat; said pin member having an end surface substantially normal to its axis at the smaller end of its tapered end portion engageable in metal-to-metal contact with said box shoulder after engagement of said tapered end portion with said tapered seat; said shifting means and lock means being constructed and arranged to exert sufficient force on said pin member to axially slide said tapered end portion along said seat to deform said end portion radially inwardly to an extent limited by subsequent engagement of said pin member end surface with said shoulder; said lock means comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge said lock membErs radially inwardly upon turning of said screws in one direction.
Claim 11
Dependent Claim
202 words
In a connector as defined in claim 1; said box member having a shoulder substantially normal to its axis at the smaller end of its tapered seat; said pin member having an end surface substantially normal to its axis at the smaller end of its tapered end portion engageable in metal-to-metal contact with said box shoulder after engagement of said tapered end portion with said tapered seat; said shifting means and lock means being constructed and arranged to exert sufficient force on said pin member to axially slide said tapered end portion along said seat to deform said end portion radially inwardly to an extent limited by subsequent engagement of said pin member end surface with said shoulder; said lock means comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge said lock members radially inwardly upon turning of said screws in one direction; said screws and lock members having coengageable means for moving said lock members radially outwardly of said pin member groove upon turning of said screws in the opposite direction.
Claim 12
Dependent Claim
200 words
In a connector as defined in claim 1; said angle of disposition of said tapered end portion and tapered seat being about 20*; said angle of disposition of said coengageable tapered surfaces being about 10*; said box member having a shoulder substantially normal to its axis at the smaller end of its tapered seat; said pin member having an end surface substantially normal to its axis at the smaller end of its tapered end portion engageable in metal-to-metal contact with said box shoulder after engagement of said tapered end portion with said tapered seat; said shifting means and lock means being constructed and arranged to exert sufficient force on said pin member to axially slide said tapered end portion along said seat to deform said end portion radially inwardly to an extent limited by subsequent engagement of said pin member end surface with said shoulder; said lock means comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge said lock members radially inwardly upon turning of said screws in one direction.
Claim 13
Dependent Claim
229 words
In a connector as defined in claim 1; said angle of disposition of said tapered end portion and tapered seat being about 20*; said angle of disposition of said coengageable tapered surfaces being about 10*; said box member having a shoulder substantially normal to its axis at the smaller end of its tapered seat; said pin member having an end surface substantially normal to its axis at the smaller end of its tapered end portion engageable in metal-to-metal contact with said box shoulder after engagement of said tapered end portion with said tapered seat; said shifting means and lock means being constructed and arranged to exert sufficient force on said pin member to axially slide said tapered end portion along said seat to deform said end portion radially inwardly to an extent limited by subsequent engagement of said pin member end surface with said shoulder; said lock means comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge said lock members radially inwardly upon turning of said screws in one direction; said screws and lock members having coengageable means for moving said lock members radially outwardly of said pin member groove upon turning of said screws in the opposite direction.
Claim 14
Dependent Claim
110 words
In a connector as defined in claim 1; said lock meaNs comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge said lock members radially inwardly upon turning of said screws in one direction; said pin member having a plurality of axially spaced outer peripheral grooves and a plurality of axially spaced tapered surfaces provided by sides of said grooves; said lock members having their tapered surfaces axially spaced from each other and simultaneously engaging said axially spaced tapered groove surfaces.
Claim 15
Dependent Claim
219 words
In a connector as defined in claim 1; said box member having a shoulder substantially normal to its axis at the smaller end of its tapered seat; sais pin member having an end surface substantially normal to its axis at the smaller end of its tapered end portion engageable in metal-to-metal contact with said box shoulder after engagement of said tapered end portion with said tapered seat; said shifting means and lock means being constructed and arranged to exert sufficient force on said pin member to axially slide said tapered end portion along said seat to deform said end portion radially inwardly to an extent limited by subsequent engagement of said pin member end surface with said shoulder; said lock means comprising circumferentially spaced lock members slidable in said box member, said tapered surface of said lock means being on said lock members; said shifting means comprising screws threaded in said box member and engaging said lock members to urge lock members radially inwardly upon turning of said screws in one direction; said pin member having a plurality of axially spaced outer peripheral grooves and a plurality of axially spaced tapered surfaces provided by sides of said grooves; said lock members having their tapered surfaces axially spaced from each other and simultaneously engaging said axially spaced tapered groove surfaces.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |