Back to results
US 6,317,895 B1Granted
Safety helmet assembly
AssigneeMine Safety Appliances Company
InventorsRichard A. Erth, Layton A. Wise
Life of this patent
Estimating the term…
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.
Claims18
A safety helmet assembly comprising:
- (a) a rigid outer shell;
- (b) an unsegmented shock absorbing layer inside of the outer shell
- (c) a nonflaccid shield layer comprising a plurality of individual sections positioned between the outer shell and the shock absorbing layer, the shield layer being fabricated from a polymeric material having a modulus in the range of approximately 150,000 to approximately 700,000 psi.
A safety helmet assembly comprising:
- (a) a suspension connected to a rigid outer shell;
- (b) a shock absorbing layer inside of the outer shell;
- and
- (c) a nonflaccid shield layer positioned between the outer shell and the shock absorbing layer, the shield layer comprises a plurality of individual sections with a first section positioned on a first side of the safety helmet assembly and a second section positioned on a second side of the safety helmet assembly.
1 more element
A safety helmet assembly comprising:
- (a) a suspension connected to a rigid outer shell;
- (b) a shock absorbing layer inside of the outer shell;
- and
- (c) a nonflaccid shield layer having a thickness in the range of approximately 0.015 to approximately 0.040 mil, positioned between the outer shell and the shock absorbing layer, the shield layer comprising a first section positioned on a first side of the safety helmet assembly and a second section positioned on a second side of the safety helmet assembly, the first and second sections being opposite each other.
1 more element
Dependencies are inferred from the claim text.