EP 0221578 A3 19870902 - HYDRAULIC CIRCUIT FOR SELF-UNDECKING CRANE
Title (en)
HYDRAULIC CIRCUIT FOR SELF-UNDECKING CRANE
Publication
Application
Priority
US 48763883 A 19830422
Abstract (en)
[origin: EP0221578A2] A hydraulic circuit for a self-undecking crane (10) having a separable upper (12) and retractable legs (22,28) with extendable jacks (27,29,31,33) for elevating the upper (12), said circuit comprising first means to raise and lower said legs (22,28), second means to extend and retract said jacks (27,29,31,33), and third means responsive to the extension of said jacks (27,29,31,33) to render said first means inoperative.
IPC 1-7
IPC 8 full level
B66C 23/26 (2006.01); B66C 23/80 (2006.01)
CPC (source: EP)
B66C 23/80 (2013.01)
Citation (search report)
- [A] US 4273244 A 19810616 - JENSEN LYLE B, et al
- [A] DE 1634769 A1 19700917 - DEMAG BAUMASCHINEN GMBH
- [A] US 4124226 A 19781107 - PHILLIPS FRANK T
- [A] US 3550506 A 19701229 - GARDENHOUR EUGENE C
- [A] FR 2507984 A1 19821224 - KOMATSU MFG CO LTD [JP]
- [AD] US 3923407 A 19751202 - JENSEN LYLE B, et al
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0221578 A2 19870513; EP 0221578 A3 19870902; EP 0221578 B1 19900613; DE 3474808 D1 19881201; DE 3482463 D1 19900719; EP 0124024 A2 19841107; EP 0124024 A3 19851127; EP 0124024 B1 19881026; JP S6012495 A 19850122
DOCDB simple family (application)
EP 86115927 A 19840418; DE 3474808 T 19840418; DE 3482463 T 19840418; EP 84104407 A 19840418; JP 8166084 A 19840423