EP 0994032 B1 20040331 - Safety drive unit in combination with a movable of protection screen, particularly in manufacturing machines
Title (en)
Safety drive unit in combination with a movable of protection screen, particularly in manufacturing machines
Title (de)
Sicherheits-Antriebseinheit in Kombination mit einem Schutzschirm, insbesondere für Herstellungsmaschinen
Title (fr)
Unité d'entraînement à sécurité en combinaison avec un écran de protection, notamment pour des machines de fabrication
Publication
Application
Priority
IT SV980059 A 19981014
Abstract (en)
[origin: EP0994032A1] Safety drive unit, in particular for the movement of protection screens in manufacturing machines the said unit comprising at least one drive motor (25, 26) that drives a support of the motion (7) of an element of cover and/or protection (5, 205). According to the invention, the transmission between the drive motor (25, 26) and the protection screen (5, 205) is formed by a pair of helical gears (22, 23) engaged between each other with the corresponding external helical threads (122, 122', 123, 123'), the said helical gears (22, 23) being made in such a manner, that the rotation of the helical drive gear (23) in the two directions engages the rotation in the two directions of the other helical driven gear (22), whereas a rotation of the driven helical gear (22) engages a locking underpinning of the same in or with the helical drive gear (23) which prevents the rotation. The invention relates also to a protection screen equipped with such a drive unit. <IMAGE>
IPC 1-7
IPC 8 full level
B65B 57/00 (2006.01)
CPC (source: EP)
B65B 57/005 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0994032 A1 20000419; EP 0994032 B1 20040331; DE 69915964 D1 20040506; DE 69915964 T2 20041028; IT 1305420 B1 20010504; IT SV980059 A0 19981014; IT SV980059 A1 20000414
DOCDB simple family (application)
EP 99120332 A 19991012; DE 69915964 T 19991012; IT SV980059 A 19981014