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US 4,057,057 AGranted
Breathing mask, especially a half mask or a full mask provided with an inner mask
AssigneeKemira Oy
InventorSigurd Alfons Backlund
Life of this patent
Estimating the term…
Abstract
A gas mask, especially a half mask or a full mask provided with an inner mask, and having protective glasses or spectacles and means for attaching them to the half mask or directly to the inner mask.
Claims4
A gas mask of the type comprising an outer mask and a separate inner mask having a nose arch and adapted to cover the nose and mouth of a wearer, comprising:
- a support structure for glasses and means for attaching the support structure directly to the nose arch of the inner mask in order to obtain correct positioning of the glasses in relation to the wearer's face, and in which the nose arch has at least one opening for receiving the means for attaching the glass support structure to an adjustable depth in order to adjust the vertical position of the glass support structure, said means for attaching the glass support structure being tightly held in said opening.
A gas mask of the type having a nose arch and adapted to snugly cover the nose and mouth of a wearer, comprising:
- a support structure for glasses and means for attaching the support structure directly to the nose arch in order to obtain correct positioning of the glasses in relation to the wearer's face and wherein the nose arch is formed with at least one opening adapted to receive the means for attaching the support structure to a controlled depth for vertical adjustment of the support structure, said means for attaching the glass support structure being tightly held in said opening.
Dependencies are inferred from the claim text.