Invention Grant
US08434268B2 Method for installing door operating apparatus 有权
安装门操作装置的方法

Method for installing door operating apparatus
Abstract:
A method for installing a retrofit conversion kit for converting a door operating apparatus from overhead use to underground use and for operating a swinging door while protecting the door apparatus against moisture and dust encroachment within its underground location. A seal arrangement provides this contamination encroachment protection.
Public/Granted literature
Information query
Patent Agency Ranking
0/0