Title:
Closure operating mechanism and automatic control system therefor
Document Type and Number:
United States Patent 2871009

Inventors:
Picatti, George G.
Publication Date:
01/27/1959
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Assignee:
Picatti, George G.
Primary Class:
49/30
Other Classes:
49/360
International Classes:
E05F15/14; E05F15/00
US Patent References:
0566839
1694431Door-operating device
1874903Closure operator
1928698Operating mechanism
1952681Operator for horizontally sliding warehouse doors
2166527Operating means for elevator doors
2294041Door operating mechanism
2346388Gate drive
2526503Elevator door
2572196Elevator door operating mechanism
Foreign References:
FR1095247A




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