EP 0033165 A3 19811209 - SUPPORTING ARM FOR MOBILE CONSTRUCTIONS
Title (en)
SUPPORTING ARM FOR MOBILE CONSTRUCTIONS
Publication
Application
Priority
DK 36380 A 19800129
Abstract (en)
[origin: US4397479A] Supporting leg for mobile construction equipment such as mobile cranes, having a supporting foot (1) which can be elevated and lowered in relation to the foundation by means of a moving mechanism (3) inserted between the equipment (2) and the supporting leg. Wherein the moving mechanism (3) has a clearance (4) between the foot elevated position and the foot lowered position, and a spring (8) urges the mechanism (3) against the elevated position, whereby an alarm switch (9) is activated to give an automatic indication in case the stability of the construction is reduced. The allowable reduction of load on the supporting leg before the activation, can be adjusted by the spring force applied.
IPC 1-7
IPC 8 full level
B66C 23/78 (2006.01); B66C 23/90 (2006.01); B66F 17/00 (2006.01)
CPC (source: EP US)
B66C 23/78 (2013.01 - EP US); B66C 23/90 (2013.01 - EP US); B66F 17/006 (2013.01 - EP US)
Citation (search report)
- [X] DE 1801374 U 19591203 - DEMAG ZUG GMBH [DE]
- DE 664430 C 19380826 - METZ CARL, et al
- US 3848750 A 19741119 - HOGE D
- [A] DE 2609631 B2 19791018
- [A] DE 1456422 A1 19690130 - BILSTEIN AUGUST FA
- [A] FR 1037381 A 19530916
- Patent Abstracts of Japan, Band 2, Nr. 60, 28 April 1978, Seite 855 M78; & JP-A-53 020 222
Designated contracting state (EPC)
AT BE CH DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0033165 A2 19810805; EP 0033165 A3 19811209; DK 144639 B 19820426; DK 144639 C 19820927; DK 36380 A 19810730; FI 64553 B 19830831; FI 64553 C 19831212; FI 810234 L 19810730; NO 148287 B 19830606; NO 148287 C 19830914; NO 810123 L 19810730; US 4397479 A 19830809
DOCDB simple family (application)
EP 81100669 A 19810129; DK 36380 A 19800129; FI 810234 A 19810128; NO 810123 A 19810115; US 22654181 A 19810119