US3929355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivotal pipe joint
Assignee: Individual
•
Filing: 1974-04-04
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Granted: 1975-12-30
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Expires: 1994-04-04
Abstract
Abstract The disclosed pivotal pipe joint may be effectively used for jointing casing pipes at surface and underwater drilling, as well as in construction of pipelines. The pivotal pipe joint includes a female coupling member secured to one of the pipes being jointed, a male coupling member secured to the other pipe and a spherical ring received in the spherical socket of the female member. The male member is received in the bore of the spherical ring and is connected therewith by locking members accomodated simultaneously in grooves made, respectively, in the ring and in the male member, the grooves being aligned and facing each other at the final stage of connection of the two pipes. Connection of the spherical ring and male member by the locking members is effected quickly, simply and reliably; furthermore, the disclosed joint can be used for connecting pipes of a large diameter.
Inventors
- 👤 Anatoly Emelyanovich Sljusar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:43
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16; E21B17/00; E21B17/02; E21B17/08; F; F16; F16L; F16L27/00; F16L27/02; F16L27/04; F16L37/00; F16L37/50; F16L37/52; Y; Y10; Y10S; Y10S285/00; Y10S285/915; Y10S285/92
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
401 words
A pivotal pipe joint comprising: a female member secured to the end of one of a pair of pipes to be connected; a spherical socket in said female member, coaxial with said one pipe; a spherical ring receivable in said spherical socket of said female member and having an external spherical surface congruent with said surface of said socket and an internal cylindrical surface defining the bore of said ring; grooves made in said spherical ring; a bore made in said female member extending coaxially with said spherical socket and having two diametrically opposite longitudinal grooves on its surface through which said spherical ring is adapted to be inserted into said spherical socket aNd remove therefrom; a male member having one end secured to the end of the other pipe of said pair, said male member being receivable upon connection of said pipes in said bore of said spherical ring coaxially therewith, the external cylindrical surface of said male member being complementary to said cylindrical surface of said bore of said spherical ring, the opposite free end of said male member being receivable in said socket of said female member; retaining means securing said spherical ring in said socket of said female member coaxially therewith at an initial stage of connection of said pipes, said retaining means including at least two spring-urged retaining members each respectively positionable in ports formed in said spherical ring, said ports being located intermediate the grooves in said spherical ring, said retaining means being cooperable with recesses formed in the spherical surface of said socket so as to lock said spherical ring in said socket; said retaining means being cooperable with the male member so as to disjoin said spherical ring and said female member at a final stage of connection of said pipes; grooves made in said external surface of said male member and positioned at the final stage of connection of said pipes to face said grooves in said spherical ring so that their respective edges are aligned; spring-urged locking means effecting connection of said male member and said spherical ring upon said male member having been received in said bore of said spherical ring, with said locking means being accommodated simultaneously in said grooves of said spherical ring and said grooves of said male member; sealing means for sealing away the surfaces of said socket of said female member and said male member.
Claim 2
Dependent Claim
401 words
A pivotal pipe joint comprising: a female member secured to the end of one of a pair of pipes to be connected; a spherical socket in said female member, coaxial with said one pipe; a spherical ring receivable in said spherical socket of said female member and having an external spherical surface congruent with said surface of said socket and an internal cylindrical surface defining the bore of said ring; grooves made in said spherical ring; a bore made in said female member extending coaxially with said spherical socket and having two diametrically opposite longitudinal grooves on its surface through which said spherical ring is adapted to be inserted into said spherical socket aNd remove therefrom; a male member having one end secured to the end of the other pipe of said pair, said male member being receivable upon connection of said pipes in said bore of said spherical ring coaxially therewith, the external cylindrical surface of said male member being complementary to said cylindrical surface of said bore of said spherical ring, the opposite free end of said male member being receivable in said socket of said female member; retaining means securing said spherical ring in said socket of said female member coaxially therewith at an initial stage of connection of said pipes, said retaining means including at least two spring-urged retaining members each respectively positionable in ports formed in said spherical ring, said ports being located intermediate the grooves in said spherical ring, said retaining means being cooperable with recesses formed in the spherical surface of said socket so as to lock said spherical ring in said socket; said retaining means being cooperable with the male member so as to disjoin said spherical ring and said female member at a final stage of connection of said pipes; grooves made in said external surface of said male member and positioned at the final stage of connection of said pipes to face said grooves in said spherical ring so that their respective edges are aligned; spring-urged locking means effecting connection of said male member and said spherical ring upon said male member having been received in said bore of said spherical ring, with said locking means being accommodated simultaneously in said grooves of said spherical ring and said grooves of said male member; sealing means for sealing away the surfaces of said socket of said female member and said male member.
Claim 3
Dependent Claim
58 words
A pivotal pipe joint as claimed in claim 1, wherein said spherical ring is provided on the face thereof, facing said pipe carrying said female member, under said grooves of said spherical ring with a shoulder having mounted thereon said sealing means compressable between the respective surfaces of said male member and said socket of said female member.
Claim 4
Dependent Claim
147 words
A pivotal pipe joint as claimed in claim 1, wherein each said retaining member includes a rotatable double-arm lever with lugs on the ends thereof, one said end of said lever being spring-urged and said lug of said end having a spherical portion positioned to be acted upon by said male member, said lug of the other said end being receivable in said recess in said spherical surface of said socket of said female member at an initial stage of connection of said pipes, the urging of said end of said lever being effected by a T-shaped leaf spring of which one end abuts against said end of said lever, having said spherical portion, the other end of said spring being received in inclined slots cut in the walls of said additional ports of said spherical ring, parallel with the plane of rotation of said double-arm lever.
Claim 5
Dependent Claim
280 words
A pivotal pipe joint as claimed in claim 1, wherein said grooves of said spherical ring and of said male member are in the form of rectangular recesses, said locking means being accommodated in said recesses of said male member and being depressable therein by said spherical ring at relative displacement between said male member and said spherical ring along their common axis, said ring having an internal bevel, each said locking means including a curvilinear bar of which the side facing the cylindrical surface of said bore of said spherical ring has a radius of curvature not greater than the radius of curvature of the external cylindrical surface of said male member, the bottom portion of said side having a chamfer for cooperation with said internal bevel of said spherical ring at depressing of said bar, the side of said bar, facing the bottom of said groove of said male member, having a slot running the entire height of said side, said slot accommodating therein a projection of a leaf spring of which the ends abut against said bottom of said slot, whereby saId spring urges said bar, said bar having made in the end faces thereof elongated grooves, the longitudinal walls of said groove in said male member having made therein through holes opening into said groove and to the cylindrical surface of said male member, adjoining said spherical ring, said holes having pins pressure-fit therein so that the ends of said pins project into said grooves of said male member and are received in said elongated grooves in said end faces of said bar, retaining the latter from falling out from said groove of said male member.
Claim 6
Dependent Claim
107 words
A pivotal pipe joint as claimed in claim 4, wherein, to render said joint capable of torque transmission, said spring-urged locking means being accommodated simultaneously in said recess in said male member and said recess in said spherical ring, said spherical surface of said spherical ring, adjoining said spherical surface of said socket of said female member, has cut therein a pair of diametrally arranged recesses with planar longitudinal walls, each said recess receiving therein an insert shaped as a rectangular parallelepiped with a cylindrical bore adapted to receive therein a tail portion of a screw threaded into a through threaded opening made in said female member.
Claim 7
Dependent Claim
120 words
A pivotal pipe joint as claimed in claim 4, wherein the cylindrical surface of said spherical ring, adjoining said male member, has cut therein longitudinal open passages communicating with the respective ones of said grooves of said spherical ring and opening to the free end face of said spherical ring, said open passages being adapted to have introduced thereinto means for depressing said curvilinear bars into said grooves of said male member at disconnection of said pipes, the side of each said curvilinear bar, facing said spherical ring, having a locally chamfered portion, above which the respective one of said longitudinal open passages is situated, said chamfered portion being thus positioned to be acted upon by said bar depressing means.
Claim 8
Dependent Claim
51 words
A pivotal pipe joint as claimed in claim 6, wherein the end face of said sleeve, facing said locking means, is provided with elongated projections having each an internal bevel for cooperation with said chamfered portions of said locking means, as the latter are being depressed during disconnection of said pipes.
Claim 9
Dependent Claim
62 words
A pivotal pipe joint as claimed in claim 6, wherein said means for depressing said locking means at disconnection of said pipes includes a sleeve received about said male member for axial displacement therealong at disconnection of said pipes, for cooperation with said chamfers of said locking means, the face end of said sleeve, facing said locking means, having an external bevel.
Claim 10
Dependent Claim
83 words
A pivotal pipe joint as claimed in claim 8, wherein said sleeve has in the upper portion thereof a lug having made therein radial recesses accommodating therein spring-biased rods retaining said sleeve against displacement along said male member, when said pipes are not to be disconnected, said male member having an annular shoulder onto which said spring-urged rods of said sleeve bear by their lateral surfaces, said shoulder having a chamfer of the same sense at that of said bevel of said sleeve.
Claim 11
Dependent Claim
27 words
A pivotal pipe joint as claimed in claim 1, wherein said ports in said spherical ring extend perpendicularly to the generatrix of said bore of said ring.
Claim 12
Dependent Claim
22 words
A pivotal pipe joint, as claimed in claim 1, wherein said ports extend along the generatrix of said bore of said ring.
Claim 13
Dependent Claim
112 words
A pivotal pipe joint as claimed in claim 11, wherein said ports in said spherical ring having said grooves thereof in the form of recesses are partly overlapped on the side of said male member by the body of said ring, the remaining portions of said additional port, adapted for projection therethrough of said lever of the respective one of said retaining members, being situated intermediate of said end face of said ring with said shoulder for supporting said sealing means, and said grooves for assoCiation with said locking means, said recess in said spherical surface of said socket of said female member, adapted to receive therein said lug of said lever.
Claim 14
Dependent Claim
98 words
A pivotal pipe joint as claimed in claim 1, wherein said grooves of said male member form a common annular groove, each said groove in said spherical ring being in the form of a port of a rectangular shape, accommodating said locking means therein, said locking means being depressable by said male member into said port, said port having made in the lateral walls thereof blind grooves opening to the spherical surface of said ring, the longitudinal walls of said port having made therein grooves in the form of holes opening to the spherical surface of said ring.
Claim 15
Dependent Claim
103 words
A pivotal pipe joint as claimed in claim 13, wherein said annular groove of said male member accommodates an elastic hollow annulus, said male member having cut therein passage means communicating with the internal space of said elastic annulus and also communicating with the space above said spherical ring, said passage means being adapted for supplying a working fluid into said internal space of said elastic annulus, to expand said annulus and to make it act upon said locking means, said annulus acting as said means for depressing said locking means into said grooves of said spherical ring at disconnection of said pipes.
Claim 16
Dependent Claim
83 words
A pivotal pipe joint as claimed in claim 14, wherein a space is provided at the inlet of each one of said passages, said space accommodating an explosive charge capable of being exploded to generate a gaseous working fluid, said internal space of said elastic annulus communicating with the ambient atmosphere through additional passage means provided in said male member and associated with safety and exhaust valve means, to effect exhausting of said working fluid from said annulus at disconnection of said pipes.
Claim 17
Dependent Claim
63 words
A pivotal pipe joint as claimed in claim 13, wherein the external cylindrical surface of said male member has cut therein longitudinal open passages communicating with said annular groove of said male member, said passages being adapted to have introduced thereinto means for depressing said locking means into the respective ones of said ports of said spherical ring at disconnection of said pipes.
Claim 18
Dependent Claim
171 words
A pivotal pipe joint, as claimed in claim 13, wherein each said locking means includes a curvilinear bar of which the side facing said male member having a radius of curvature that is not smaller than the radius of curvature of said bore in said spherical ring, the top portion of said side having a chamfer cut therein, the top and bottom sides of said bar having projections receivable in said blind grooves of said port of said spherical ring to retain said bar in said port of said spherical ring from falling out therefrom, the side of said bar, facing said spherical surface of said socket of said female member, having cut therein a longitudinal slot accommodating therein a leaf spring urging said bar, said spring having the ends thereof received in said grooves in said longitudinal walls of said port of said spherical ring, a recess being cut into the control portion of the longitudinal slot in said bar, said leaf spring having a projection receivable in said recess.
Claim 19
Dependent Claim
56 words
A pivotal pipe joint as claimed in claim 17, wherein said free end of said male member has an external bevel adapted for cooperation with said chamfer of said curvilinear bar at depressing of said bar into said port of said spherical ring and for engagement with the surface of said socket in said female member.
Claim 20
Dependent Claim
33 words
A pivotal pipe joint as claimed in claim 17, wherein said longitudinal slot of said bar has a varying depth, said depth increasing from the centre of said bar towards the ends thereof.
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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 |