EP 0258712 A3 19891004 - LIGHTWEIGHT LINEAR HYDRAULIC ACTUATOR
Title (en)
LIGHTWEIGHT LINEAR HYDRAULIC ACTUATOR
Publication
Application
Priority
US 90253386 A 19860902
Abstract (en)
[origin: EP0258712A2] A lightweight linear hydraulic actuator (10) includes a cylindrical barrel (12) of metal tubing material, a head end gland (14) and a rod end gland (22) fastened to the barrel, a piston (28) and a rod (26) in the barrel with the rod extending through the rod end gland, ports in the sidewall of the barrel on opposite sides of the piston and fitting members having channels in registry with the ports, the fitting members (50,56) including hoop type attachments around the exterior surface of the barrel and a curved surface mating with the curvature of the barrel. A circular groove (66,68) is formed in the surface of the barrel around each of the ports and an O-ring seal is located in the grooves sealing against the curved surface of the fitting member. An axial extension forming part of each of the fittings includes a boss (58,60) receiving a threaded fastener for fastening the fittings to the barrel.
IPC 1-7
IPC 8 full level
F15B 15/14 (2006.01)
CPC (source: EP)
F15B 15/1438 (2013.01); F15B 15/149 (2013.01)
Citation (search report)
- [X] DE 2158720 A1 19730530 - INDRAMAT GMBH
- [A] DE 6913740 U 19770414 - BUERKERT CHRISTIAN [DE]
- [A] FR 2547887 A1 19841228 - OSA AB [SE]
- [A] DE 2846027 A1 19790503 - ABEX CORP
- [A] US 2645513 A 19530714 - STERRETT VANCE C
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0258712 A2 19880309; EP 0258712 A3 19891004; EP 0258712 B1 19920129; DE 3776465 D1 19920312; JP S6362903 A 19880319
DOCDB simple family (application)
EP 87111802 A 19870814; DE 3776465 T 19870814; JP 21807887 A 19870902