发明名称 |
METHOD FOR INSTALLING DOOR OPERATING APPARATUS |
摘要 |
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. |
申请公布号 |
US2011302848(A1) |
申请公布日期 |
2011.12.15 |
申请号 |
US201113216071 |
申请日期 |
2011.08.23 |
申请人 |
NIXON ANGELO;OPCON MANUFACTURING SYSTEMS, INC. |
发明人 |
NIXON ANGELO |
分类号 |
E05F15/00;E06B7/00 |
主分类号 |
E05F15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|