An attachment is provided for a safety gate that is positioned to close the opening in a catwalk to allow access to and from a ladder or stairs. The gate is urged to the closed position by springs. The improvement is an attachment for connecting to the lower side of existing gates to prevent workmen...http://www.google.fr/patents/US6094863?utm_source=gb-gplus-shareBrevet US6094863 - Attachment to retrofit existing safety gates to imrove the safety afforded by the gates
Attachment to retrofit existing safety gates to imrove the safety afforded ...
