US4218044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipeline lifting device
Assignee: Individual
•
Filing: 1978-11-06
•
Granted: 1980-08-19
•
Expires: 1998-11-06
Abstract
Abstract The device comprises a detachable sling consisting of an upper part and a lower part. The upper part carries a self-propelled trolley. The lower part of the sling is articulated by links with supporting shoes also articulated to each other by links. The shoes are arranged symmetrically with relation to the longitudinal axis of the pipeline and are moved by hydraulic cylinders, both ends of each cylinder connecting the lower part of the sling with one of the shoes by means of ball joints. Both parts of the sling are interconnected with each other by projections and slots installed, respectively, on the upper and lower parts of the sling.
Inventors
- 👤 Deviz F. Ikhsanov
- 👤 Vladimir L. Buzhinsky
- 👤 Konstantin E. Raschepkin
- 👤 Vasily K. Galjuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:13
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A device for lifting a pipeline comprising: a frame carrying a self-propelled trolley installed with provision for moving along said pipeline; a sling embracing said pipeline; a supporting appliance in the form of two shoes arranged symmetrically with relation to the longitudinal axis of said pipeline and connected by links with said sling; at least two power cylinders, one end of each of said cylinders being articulated with a respective one of said shoes with provision for its turning across the longitudinal axis of said pipeline whereas the other end of each of said cylinders is articulated with said sling.
Claim 2
Independent Claim
100 words
A device for lifting a pipeline comprising: a frame carrying a self-propelled trolley installed with provision for moving along said pipeline; a sling embracing said pipeline; a supporting appliance in the form of two shoes arranged symmetrically with relation to the longitudinal axis of said pipeline and connected by links with said sling; at least two power cylinders, one end of each of said cylinders being articulated with a respective one of said shoes with provision for its turning across the longitudinal axis of said pipeline whereas the other end of each of said cylinders is articulated with said sling.
Claim 3
Dependent Claim
36 words
A device according to claim 1 wherein said sling comprises two detachable parts including an upper part carrying said frame with said self-propelled trolley and a lower part having said rods and power cylinders connected thereto.
Claim 4
Dependent Claim
57 words
A device according to claim 2 wherein the upper detachable part of the sling is made as a rocker having at the ends thereof longitudinal projections of a T-shaped cross section while the lower detachable part of the sling has longitudinal through guide slots which receive said projections when both parts of the sling are joined together.
Claim 5
Dependent Claim
70 words
A device according to claim 1 wherein each shoe comprises two cross members in the form of cylindrical segments secured to a convex foot, said shoes being connected to each other and to the sling by three pairs of cross links two of which articulate the lower part of the sling with the shoes while the third pair of links articulates the opposite sides of the shoes to each other.
References Cited (Backward Citations)
US4020641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |