Title:
Toe actuated safety device for automatic doors
Document Type and Number:
United States Patent 3031546

Inventors:
Williams, Nathan T.
Publication Date:
04/24/1962
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Assignee:
Williams, Nathan T.
Primary Class:
200/61.620
International Classes:
E05F15/00; E05F15/04; H01H21/26; H01H21/00
US Patent References:
1662661Control mechanism
2476111Mechanism for automatic stopping and reversal of electromechanically operated doors
2651689Door operated switch


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