GB1310948A – Oil pressure jack for lifting operations
– Google Patents
GB1310948A – Oil pressure jack for lifting operations
– Google Patents
Oil pressure jack for lifting operations
Info
Publication number
GB1310948A
GB1310948A
GB2624270A
GB2624270A
GB1310948A
GB 1310948 A
GB1310948 A
GB 1310948A
GB 2624270 A
GB2624270 A
GB 2624270A
GB 2624270 A
GB2624270 A
GB 2624270A
GB 1310948 A
GB1310948 A
GB 1310948A
Authority
GB
United Kingdom
Prior art keywords
cylinder
jacks
piston
rod
jack
Prior art date
1969-06-04
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
Application number
GB2624270A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Kizai Forming Co Ltd
Original Assignee
Kawatetsu Kizai Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
1969-06-04
Filing date
1970-06-01
Publication date
1973-03-21
1969-10-13
Priority claimed from JP8208369A
external-priority
patent/JPS5139018B1/ja
1970-06-01
Application filed by Kawatetsu Kizai Kogyo Co Ltd
filed
Critical
Kawatetsu Kizai Kogyo Co Ltd
1973-03-21
Publication of GB1310948A
publication
Critical
patent/GB1310948A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
E02B17/0854—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks with clamping wedges, eccentric clamping devices and so on
B—PERFORMING OPERATIONS; TRANSPORTING
B66—HOISTING; LIFTING; HAULING
B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
B66F3/25—Constructional features
B66F3/30—Constructional features with positive brakes or locks
Abstract
1310948 Step-by-step jacks KAWATETSU KIZAI KOGYO CO Ltd 1 June 1970 [4 June 1969 13 Oct 1969] 26242/70 Heading B8J A step-by-step hydraulic jack A comprises a piston-rod 1 attached to a piston 2 sliding in a cylinder 3. Similar clamps 5, 9 are respectively attached to the rod 1 and the cylinder 3. Each clamp, e.g. 5 has a number of segments 6 urged upwards by a spring 8 into engagement with conical surface with which the assembled segments 6 mate. The jack climbs a rod 13 having stop shoulders 14 with which the clamps 5, 9 co-operate. The shoulders 14 are protected inside the jack by a guide 4. A number of the jacks may be used in parallel in construction work. E.g. as shown in Fig. 2 three rods 13 are suspended from a supporting structure 15 through piston and cylinder load equalizers 16. The cylinder chambers 19 of the load equalizers 16 are interconnected by conduits 20, 20a, 20b, 20c, initially pressurized before starting operations and then isolated by valves 21, 22 to ensure even sharing of the load (not shown) between the jacks.
GB2624270A
1969-06-04
1970-06-01
Oil pressure jack for lifting operations
Expired
GB1310948A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
JP4427069
1969-06-04
JP8208369A
JPS5139018B1
(en)
1969-10-13
1969-10-13
Publications (1)
Publication Number
Publication Date
GB1310948A
true
GB1310948A
(en)
1973-03-21
Family
ID=26384120
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2624270A
Expired
GB1310948A
(en)
1969-06-04
1970-06-01
Oil pressure jack for lifting operations
Country Status (3)
Country
Link
DE
(1)
DE2027605A1
(en)
FR
(1)
FR2049876A5
(en)
GB
(1)
GB1310948A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN101230750B
(en)
*
2007-01-23
2011-02-09
上海海塔机械制造有限公司
Core-passing type self-raising complete-fluid pressure step hoister and method for hoisting construction platform
CN108821080A
(en)
*
2018-08-22
2018-11-16
北京奇力建通工程技术有限公司
Lifting traction device
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE10003711A1
(en)
*
2000-01-28
2001-08-02
Mayr Christian Gmbh & Co Kg
Hydraulic clamp locking itself in slide bar grooves to apply closure pressure to mold, comprises casing around bar with internal spring-loaded pistons and locking segments
1970
1970-06-01
GB
GB2624270A
patent/GB1310948A/en
not_active
Expired
1970-06-03
FR
FR7020412A
patent/FR2049876A5/fr
not_active
Expired
1970-06-04
DE
DE19702027605
patent/DE2027605A1/en
active
Pending
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN101230750B
(en)
*
2007-01-23
2011-02-09
上海海塔机械制造有限公司
Core-passing type self-raising complete-fluid pressure step hoister and method for hoisting construction platform
CN108821080A
(en)
*
2018-08-22
2018-11-16
北京奇力建通工程技术有限公司
Lifting traction device
Also Published As
Publication number
Publication date
DE2027605A1
(en)
1971-04-08
FR2049876A5
(en)
1971-03-26
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Legal Events
Date
Code
Title
Description
1973-08-01
PS
Patent sealed
1982-01-06
PCNP
Patent ceased through non-payment of renewal fee
