GB1422042A - Methods of lowering loads by means of a hydraulic piston and cylinder assembly and load supporting element - Google Patents
Methods of lowering loads by means of a hydraulic piston and cylinder assembly and load supporting elementInfo
- Publication number
- GB1422042A GB1422042A GB36173A GB36173A GB1422042A GB 1422042 A GB1422042 A GB 1422042A GB 36173 A GB36173 A GB 36173A GB 36173 A GB36173 A GB 36173A GB 1422042 A GB1422042 A GB 1422042A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lowering
- nuts
- load
- piston
- valves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0836—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks
- E02B17/0881—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks with following nuts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0836—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks
Abstract
1422042 Lowering apparatus N H AHLGREN 3 Jan 1973 [12 Jan 1972] 361/73 Heading B8B [Also in Division F1] In a method of lowering a load step-by-step by means of an hydraulic assembly comprising two piston and cylinder units 31, 32 each with a closed end to define a pressure medium side of the piston, which sides may be connected through a throttle valve 37 or directly under the control of valves V1, V2, the direct connection including a separate chamber 35, the valves V1, V2 are operated in the sequence illustrated to control the lowering of the load (not shown) suspended from a threaded rod 8 with supporting nuts 9, 10 threaded thereon and co-operating with the respective pistons 33, 34 of the units 31, 32. Fully loaded nuts are shown shaded, unloaded nuts are shown blank and nuts sharing the load are half-shaded. In a modification, Figs. 2a to 2g (not shown), three sets of pairs of piston and cylinder assemblies 31, 32 are further connected to a common system to ensure uniform lowering of the load attached to the rods 8. The valves are sequentially operated so that the lowering proceeds in steps each one-third of the stroke length. In a further modification, Figs. 3a to 3d (not shown), the nuts 9, 10 are replaced by gripping devices and the rod 8 may be a rope.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE00295/72A SE354635B (en) | 1972-01-12 | 1972-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1422042A true GB1422042A (en) | 1976-01-21 |
Family
ID=20256321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB36173A Expired GB1422042A (en) | 1972-01-12 | 1973-01-03 | Methods of lowering loads by means of a hydraulic piston and cylinder assembly and load supporting element |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3895778A (en) |
| JP (1) | JPS4878650A (en) |
| AT (1) | AT336841B (en) |
| BR (1) | BR7300232D0 (en) |
| CA (1) | CA1007632A (en) |
| DE (1) | DE2300830A1 (en) |
| ES (1) | ES410514A1 (en) |
| FR (1) | FR2167951B1 (en) |
| GB (1) | GB1422042A (en) |
| IT (1) | IT988101B (en) |
| SE (1) | SE354635B (en) |
| ZA (1) | ZA7362B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2219568A (en) * | 1988-06-11 | 1989-12-13 | Hydra Tight Ltd | Pulling tool |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2424451A1 (en) * | 1978-04-28 | 1979-11-23 | Delattre Levivier | Walking mechanism for relatively movable bodies - has pair of hydraulic cylinders which work with alternate strokes to give continuous movement via hinged legs |
| US4238115A (en) * | 1979-08-17 | 1980-12-09 | Research-Cottrell, Inc. | Jacking device |
| FR2496074B1 (en) * | 1980-12-16 | 1985-08-16 | Laplante Gilbert | JACK MOTOR INSTALLATION FOR PRODUCING THE CONTINUOUS MOVEMENT OF AN OBLONG OBJECT IN THE DIRECTION OF ITS AXIS, AND / OR FOR MOVING AN ELEMENT ALONG THE SAID OBJECT |
| US4460039A (en) * | 1982-11-04 | 1984-07-17 | W-K-M Wellhead Systems, Inc. | Wellhead valve removal and installation tool |
| US4615509A (en) * | 1985-10-23 | 1986-10-07 | Cibeles International Inc. | Continuous operation linear hydraulic winch |
| US6299123B1 (en) * | 2000-02-07 | 2001-10-09 | George Shandor Hayde | Adjustable hanging system |
| JP4783493B2 (en) * | 2000-07-03 | 2011-09-28 | 鉄建建設株式会社 | Continuous towing jack |
| JP5673870B1 (en) | 2013-07-26 | 2015-02-18 | 東洋製罐グループホールディングス株式会社 | Resin structure having a liquid layer on the surface |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2686420A (en) * | 1954-08-17 | Slab lifting apparatus | ||
| US2758467A (en) * | 1950-08-12 | 1956-08-14 | Philip N Youtz | Building apparatus |
| US3416284A (en) * | 1964-07-24 | 1968-12-17 | Felix M. Adler | Method for constructing a building including feeding a plurality of end connected column sections upwardly through a jack system |
| SE317791B (en) * | 1969-02-21 | 1969-11-24 | O Jahr |
-
1972
- 1972-01-12 SE SE00295/72A patent/SE354635B/xx unknown
-
1973
- 1973-01-03 GB GB36173A patent/GB1422042A/en not_active Expired
- 1973-01-03 ZA ZA730062A patent/ZA7362B/en unknown
- 1973-01-05 US US321154A patent/US3895778A/en not_active Expired - Lifetime
- 1973-01-09 DE DE2300830A patent/DE2300830A1/en active Pending
- 1973-01-10 AT AT17973A patent/AT336841B/en not_active IP Right Cessation
- 1973-01-11 IT IT47624/73A patent/IT988101B/en active
- 1973-01-11 BR BR73232A patent/BR7300232D0/en unknown
- 1973-01-11 CA CA161,070A patent/CA1007632A/en not_active Expired
- 1973-01-11 ES ES410514A patent/ES410514A1/en not_active Expired
- 1973-01-11 FR FR7300874A patent/FR2167951B1/fr not_active Expired
- 1973-01-12 JP JP48006540A patent/JPS4878650A/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2219568A (en) * | 1988-06-11 | 1989-12-13 | Hydra Tight Ltd | Pulling tool |
| GB2219568B (en) * | 1988-06-11 | 1992-08-05 | Hydra Tight Ltd | Pulling tool. |
Also Published As
| Publication number | Publication date |
|---|---|
| BR7300232D0 (en) | 1973-09-27 |
| ZA7362B (en) | 1973-09-26 |
| ATA17973A (en) | 1976-09-15 |
| AU5097273A (en) | 1974-07-11 |
| US3895778A (en) | 1975-07-22 |
| CA1007632A (en) | 1977-03-29 |
| DE2300830A1 (en) | 1973-07-19 |
| AT336841B (en) | 1977-05-25 |
| IT988101B (en) | 1975-04-10 |
| ES410514A1 (en) | 1975-12-01 |
| FR2167951A1 (en) | 1973-08-24 |
| FR2167951B1 (en) | 1976-05-14 |
| SE354635B (en) | 1973-03-19 |
| JPS4878650A (en) | 1973-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |