RICHARD A ERTH
Engineers in Wexford, PA
License number
Pennsylvania PE020012E
Category
Engineers
Type
Professional Engineer
Address
Address
Wexford, PA 15090
Professional information
Safety Helmet Assembly
US Patent:
6317895, Nov 20, 2001
Filed:
Jul 14, 1999
Appl. No.:
9/353504
Inventors:
Richard A. Erth - Wexford PA
Layton A. Wise - Washington PA
Layton A. Wise - Washington PA
Assignee:
Mine Safety Appliances Company - Pittsburgh PA
International Classification:
A42B 300
US Classification:
2411
Abstract:
A safety helmet having a rigid outer shell, a shock absorbing layer inside of the outer shell, and a shield layer fabricated from a strong and lightweight material positioned between the outer shell and the shock absorbing layer. The shield layer is preferably free to move relative to the outer shell in a direction toward the shock absorbing layer.