EP 0373392 A1 19900620 - Portable hydraulic crane.
Title (en)
Portable hydraulic crane.
Title (de)
Tragbarer hydraulischer Kran.
Title (fr)
Grue hydraulique portable.
Publication
Application
Priority
US 28149088 A 19881208
Abstract (en)
The crane having a generally trapezoidal frame (10) with a caster wheel (20, 26) at each corner. A mast (52) is mounted on the front of the frame with a brace (54) between each rear corner and top of the mast. Spring loaded pins (58, 60) are used for these connections. A lifting ram (84) is pivotally connected to the mast (52) and to a telescopic boom (76, 78) pivoted on the mast. The frame has a socket on each side (12, 14) and a telescopic leg (18) including inner (46) and outer tubes (18) is mounted in each socket. A spring loaded pin (74) fixes the tubes (18, 46) relative to each other. The end of each leg has a wheel (20). Each leg (18) can pivot relative to its sleeve (12, 14) to enable raising the leg to position the distal end near the mast (52). The legs (18) can be disconnected from the sleeves (12, 14) and a locking device (28, 34) prevents removal of the legs.
IPC 1-7
IPC 8 full level
B66C 23/48 (2006.01)
CPC (source: EP)
B66C 23/48 (2013.01)
Citation (search report)
- [X] US 3367512 A 19680206 - KAPLAN REUBEN A
- [Y] US 4190233 A 19800226 - GODFREY CHARLES J B [US]
- [X] US 4669703 A 19870602 - HAWKINS JOEL W [US], et al
- [A] US 4749324 A 19880607 - RULISON ARTHUR [US]
- [A] US 4508233 A 19850402 - HELMS THOMAS G [US]
- [A] US 2939590 A 19600607 - HENRY HARRY M
- [A] FR 59878 E 19540823
- [A] US 3825132 A 19740723 - COLANGELO M
- [A] DE 2003769 A1 19701119 - TIDSWELL ANTHONY CLIFFORD
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 89121557 A 19891121; CA 599773 A 19890516