Title:
Tridynamic helmet suspension system
United States Patent 3122751
US Patent References:
Safety hat
- - 1770376

Protective cap
- - 1875143

Cap and supporting frame therefor
- - 2307713

Geodetic strap suspension for helmets
- - 2679046


Inventors:
Jordan, Robert D.
Publication Date:
03/03/1964
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Assignee:
Jordan, Robert D.
Primary Class:
2/418
International Classes:
A42B3/14; A42B3/04
Foreign References:
GB191022651A