EP 0021591 A2 19810107 - Anti-slip grating.
Title (en)
Anti-slip grating.
Title (de)
Rutschhemmende Lochplatte.
Title (fr)
Caillebotis antidérapant.
Publication
Application
Priority
US 8912079 A 19790618
Abstract (en)
An improved anti-slip tread or grating (10) design is provided with gripping members or rosettes (30) having a plurality of upstanding individual lobes (36) which are configured in such a way and project high enough to provide an excellent gripping surface. The lobes (36) of the design are self-cleaning, and have non-continuous gripping edges at their crests (40) that accommodate a greater build up of ice or mud without clogging the grating (10). The invention includes an improved method of making the anti-slip tread or grating (10).
IPC 1-7
IPC 8 full level
E01C 9/10 (2006.01); B21D 19/00 (2006.01); B21D 28/24 (2006.01); B21D 53/00 (2006.01); B61D 23/00 (2006.01); E01D 19/12 (2006.01); E04C 2/08 (2006.01); E04C 2/42 (2006.01); E04F 11/16 (2006.01); E04F 15/06 (2006.01); E04G 5/08 (2006.01); F16S 1/00 (2006.01); F16S 1/08 (2006.01)
CPC (source: EP)
B21D 47/005 (2013.01); E01D 19/12 (2013.01); E04C 2/427 (2013.01); E04F 11/16 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0021591 A2 19810107; EP 0021591 A3 19810204; EP 0021591 B1 19830511; CA 1134589 A 19821102; JP S56500749 A 19810604; JP S6224562 B2 19870529; WO 8002856 A1 19801224
DOCDB simple family (application)
EP 80301638 A 19800519; CA 348838 A 19800331; JP 50183479 A 19790618; US 7900431 W 19790618