Patent US4848808A successfully refreshed from Google Patents.
US4848808A
Expired / Lapsed
US
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Mechanical pipe joint
Assignee: NEW TPI Inc N/K/A TYLER PIPE INDUSTRIES Inc
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Filing: 1988-09-23
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Granted: 1989-07-18
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Expires: 2008-09-23
Abstract
Abstract A mechanical pipe joint comprising a substantially cylindrical body integrally formed with a plurality of pipe restraining members, and a plurality of pipe clamping members, each comprising at least one block slidably engaged with a pipe restraining member, a compressible gasket for graduating suddenly applied forces, and restraining bolts. The clamping system, acting to distribute the clamping forces on a large portion of the surface area of a pipe, simultaneously absorbs and graduates suddenly applied forces, preventing failure of the pipe point.
Inventors
- 👤 Minor W. Pannell
- 👤 Alton L. Meadows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:28
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
A mechanical pipe joint comprising: a substantially cylindrical collar surrounding a pipe; a plurality of circumferentially spaced pipe restraining members, integrally formed with said collar and extending parallel to the longitudinal axis of said pipe from one end of said collar; each of said pipe restraining members comprising a central cavity opening toward said pipe, said cavity defined by a top wall, a front wall, a back wall and side walls, each of said top walls being formed with a threaded aperture; at least one block being slidably supported in each of said central cavities; a plurality of restraining bolts, each threadably engaging said threaded aperture and non-threadably engaging said block, said restraining bolt cooperating with at least one block to forcibly cause said at least one block to engage said pipe; means permitting predetermined limited longitudinal movement of said block relative to said restraining bolt and said central cavity to accommodate movement; and resilient cushioning means interposed between said block and said pipe restraining member.
Claim 2
Dependent Claim
166 words
A mechanical pipe joint comprising: a substantially cylindrical collar surrounding a pipe; a plurality of circumferentially spaced pipe restraining members, integrally formed with said collar and extending parallel to the longitudinal axis of said pipe from one end of said collar; each of said pipe restraining members comprising a central cavity opening toward said pipe, said cavity defined by a top wall, a front wall, a back wall and side walls, each of said top walls being formed with a threaded aperture; at least one block being slidably supported in each of said central cavities; a plurality of restraining bolts, each threadably engaging said threaded aperture and non-threadably engaging said block, said restraining bolt cooperating with at least one block to forcibly cause said at least one block to engage said pipe; means permitting predetermined limited longitudinal movement of said block relative to said restraining bolt and said central cavity to accommodate movement; and resilient cushioning means interposed between said block and said pipe restraining member.
Claim 3
Dependent Claim
21 words
A mechanical pipe joint in accordance with claim 1 wherein said pipe restraining member is formed with a slotted bottom wall.
Claim 4
Dependent Claim
33 words
A mechanical pipe joint in accordance with claim 1, further comprising slidably engaging first and second blocks, said first block formed with pipe engaging teeth, said second block non-threadably engaging said restraining bolt.
Claim 5
Dependent Claim
42 words
A mechanical pipe joint in accordance with claim 1 wherein said pipe restraining bolt is formed with a threaded and non-threaded shank portion, said non-threaded shank portion being slidably engaged with at least one block in each of said pipe restraining members.
Claim 6
Dependent Claim
66 words
A mechanical pipe joint in accordance with claim 1 wherein the shank of said pipe restraining bolt is formed with a longitudinally extending interior threaded hole, said interior hole being threadably engaged by a second bolt comprising a threaded and non-threaded shank portion, said non-threaded shank portion of said second bolt being slidably engaged with at least one block in each of said pipe restraining members.
Claim 7
Dependent Claim
34 words
A mechanical pipe joint in accordance with claim 1 wherein a single block forms pipe engaging teeth, said single block being slidably supported on said restraining bolt within each of said pipe restraining members.
Claim 8
Dependent Claim
200 words
A mechanical pipe joint comprising: a substantially cylindrical collar surrounding a pipe; a plurality of circumferentially spaced pipe restraining members, integrally formed with said collar and extending parallel to the longitudinal axis of said pipe from one end of said collar; each of said pipe restraining members comprising a rectangular central cavity opening toward said pipe, said cavity defined by a top wall, a front wall, a back wall, parallel side walls and a slotted bottom wall, said top wall being formed with a threaded aperture; a first block, slidably supported in said slotted bottom wall of each of said pipe restraining members; a second block, slidably mated to said first block within said central cavity in each of said pipe restraining members; a plurality of restraining bolts, each threadably engaging said threaded aperture and non-threadably engaging said second block, said restraining bolt cooperating with said first and second block to forcibly cause said first block to engage said pipe; means permitting predetermined limited longitudinal movement of said first block relative to said restraining bolt and said rectangular cavity; and a plurality of resilient cushioning means interposed between each of said pipe restraining members and said first and second blocks.
Claim 9
Dependent Claim
200 words
A mechanical pipe joint comprising: a substantially cylindrical collar surrounding a pipe; a plurality of circumferentially spaced pipe restraining members, integrally formed with said collar and extending parallel to the longitudinal axis of said pipe from one end of said collar; each of said pipe restraining members comprising a rectangular central cavity opening toward said pipe, said cavity defined by a top wall, a front wall, a back wall, parallel side walls and a slotted bottom wall, said top wall being formed with a threaded aperture; a first block, slidably supported in said slotted bottom wall of each of said pipe restraining members; a second block, slidably mated to said first block within said central cavity in each of said pipe restraining members; a plurality of restraining bolts, each threadably engaging said threaded aperture and non-threadably engaging said second block, said restraining bolt cooperating with said first and second block to forcibly cause said first block to engage said pipe; means permitting predetermined limited longitudinal movement of said first block relative to said restraining bolt and said rectangular cavity; and a plurality of resilient cushioning means interposed between each of said pipe restraining members and said first and second blocks.
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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) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |