Patent US3594023A successfully refreshed from Google Patents.
US3594023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint for preventing slip-off of pipes
Assignee: Individual
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Filing: 1969-05-13
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Granted: 1971-07-20
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Expires: 1989-05-13
Abstract
Abstract A joint of such a construction that fitted on an annular rubber packing fitted on a connection is a ring for urging said packing against a connection step portion, said ring being pulled toward the connection step portion by clamp bolts and nuts to compress the packing between said ring and connection step portion, thereby pressing said packing against the connection step portion and against a pipe surface to prevent leakage of water through the connection and prevent the slip-off of a pipe by the frictional force of the packing, said joint being additionally provided with a split ring for grasping the pipe and a holding ring for giving a wedging action to said split ring, said holding ring being pulled by the utilization of the clamp bolts and nuts toward the ring for urging the packing against the connection step portion, the wedging action exerted by the split and holding rings being effective to reduce the diameter of the split ring and cause the split ring to be grasped around the pipe surface. Other advantages and details of the arrangement will be made clear.
Inventors
- 👤 Shinkichi Yano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:24
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/08; F16L23/00; F16L23/02; Y; Y10; Y10T; Y10T403/00; Y10T403/57; Y10T403/5721
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
240 words
A pipe joint construction comprising, in combination: a. a first pipe section having an end face, b. a second pipe section of an external size smaller than the internal size of said first pipe section and slidably entering thereinto past said end face, c. a gasket embracing said second pipe section and abutting against the end face of said first pipe section, d. a packing ring surrounding said second pipe section and having an end face separated from the end face of said first pipe section by said gasket, e. at least one of said end faces being inwardly inclined away from the other for urging said gasket toward said second pipe section when compressed between said end faces, f. adjustable means for drawing said packing ring toward said first pipe section to so compress said gasket, g. a wedge shaped split ring surrounding said second pipe section, said split ring having a pipe-gripping inner surface and an inclined outer surface and having its thicker end bearing against said packing ring, h. a wedging ring having an inclined inner surface complimentarily embracing said split ring and adapted to compress said split ring against said packing ring and said second pipe when drawn toward said packing ring, and i. means for drawing said wedging ring toward said packing ring to force said split ring against said packing ring and compress said split ring into gripping relation to said second pipe section.
Claim 2
Dependent Claim
240 words
A pipe joint construction comprising, in combination: a. a first pipe section having an end face, b. a second pipe section of an external size smaller than the internal size of said first pipe section and slidably entering thereinto past said end face, c. a gasket embracing said second pipe section and abutting against the end face of said first pipe section, d. a packing ring surrounding said second pipe section and having an end face separated from the end face of said first pipe section by said gasket, e. at least one of said end faces being inwardly inclined away from the other for urging said gasket toward said second pipe section when compressed between said end faces, f. adjustable means for drawing said packing ring toward said first pipe section to so compress said gasket, g. a wedge shaped split ring surrounding said second pipe section, said split ring having a pipe-gripping inner surface and an inclined outer surface and having its thicker end bearing against said packing ring, h. a wedging ring having an inclined inner surface complimentarily embracing said split ring and adapted to compress said split ring against said packing ring and said second pipe when drawn toward said packing ring, and i. means for drawing said wedging ring toward said packing ring to force said split ring against said packing ring and compress said split ring into gripping relation to said second pipe section.
Claim 3
Dependent Claim
96 words
A pipe joint construction as claimed in claim 1, wherein: j. said packing ring and said wedging ring have outwardly extending portions with aperture means therein aligned with each other; k. said adjustable means and said drawing means comprise threaded rod means extending through said aligned aperture means; securing means carried by at least one of said pipe sections and said rod means for securing said rod means relative to said first pipe section; and first and second nut means on said threaded rod means for bearing against said packing ring and said wedging ring, respectively.
Claim 4
Dependent Claim
102 words
A pipe joint coNstruction as claimed in claim 2, wherein said first pipe section is relatively short and has a second end face, wherein a second set of said elements referred to in clauses (b), (c), (d), (e), (f), (g) and (h) duplicating and arranged in the same fashion as the first set thereof if provided at said second end face and wherein said first and second sets are interconnected by said rod means which is common to said sets, so that each of said sets constitutes the rod securing means referred to in clause (k) with respect to the other set.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |