EP 0047151 A3 19820922 - LADDER LEVELLING ARRANGEMENTS
Title (en)
LADDER LEVELLING ARRANGEMENTS
Publication
Application
Priority
- AU 531580 A 19800829
- AU 7392281 A 19800829
Abstract (en)
[origin: EP0047151A2] A ladder leveller (4) comprises an arcuate member (5) which is preferably a circular ring. at least two and preferably three or four mounting elements (6) in the form of saddles to be connected to the ladder and through which the arcuate member may slide, and a support frame (7) connected to the arcuate member (5) and arranged to support the ladder on sloping ground and preferably also on other surfaces such as steps, whereby the ladder is pivotally mounted on the ladder leveller about an axis through the centre of the circle along which the arcuate member (5) extends. The ladder leveller may with advantage include swivelling feet (9) and an overcentre clamping lock (15) for added security if desired.
IPC 1-7
IPC 8 full level
E06C 7/44 (2006.01)
CPC (source: EP)
E06C 7/44 (2013.01)
Citation (search report)
- [X] US 2960182 A 19601115 - SWANSON ELMER L
- [A] US 3199629 A 19650810 - FAGALY ROBERT W
- [A] CH 563521 A5 19750630 - CHARLEY W BOYDEN
- [A] US 3887034 A 19750603 - SAWATZKY JOHN WALTER
Designated contracting state (EPC)
AT BE CH DE FR GB IT LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 81303947 A 19810828