EP 0115199 A1 19840808 - Hydraulic jack and method for making the same.
Title (en)
Hydraulic jack and method for making the same.
Title (de)
Hydraulische Hubvorrichtung und Verfahren zu deren Herstellung.
Title (fr)
Cric hydraulique et son procédé de fabrication.
Publication
Application
Priority
US 45333482 A 19821227
Abstract (en)
A hydraulic jack (10) comprises an elongated seamless body (11) composed of an impervious, flexible material inflatable with a pressurized hydraulic fluid, preferably water, from a flattened condition to an expanded condition. A first closure (12) includes elongated elastomeric seals (16) for sealing a first end of the body into a flattened form generally conforming to the composite thickness of the body and exhibiting high burst strength and sealing capabilities. A second closure (20), having at least one hydraulic fitting secured thereon, seals the second end of the body. The first closure (12) is formed by punching a plurality of arcuately disposed holes (42) through the body (11), anchoring and stretching the body (11) to dispose the holes in linear relationship, and then clamping and sealing the open, first end of the body with a pair of clamping plates (13).
IPC 1-7
IPC 8 full level
B66F 3/35 (2006.01)
CPC (source: EP)
B66F 3/35 (2013.01)
Citation (search report)
- [YD] US 3084961 A 19630409 - MERRIMAN HENRY H
- [Y] FR 2125216 A3 19720929 - CAMPENON BERNARD EUROPE [FR]
- [Y] DE 2802716 A1 19790726 - JANSEN HORST
- [A] DE 1840096 U 19611026 - GUMBA GUMMI IM BAUWESEN G M B [DE]
- [A] DE 7415621 U
- [A] DE 2919939 A1 19801120 - RASMUSSEN GMBH
- [A] US 1887877 A 19321115 - SHAFFER ERNEST J
- [AD] US 2976888 A 19610328 - MERRIMAN HENRY H
- [AD] US 3121577 A 19640218 - MERRIMAN HENRY H
- [AD] WO 7900022 A1 19790125 - HOLMES W
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 83307950 A 19831223; JP 24492383 A 19831227