Lens seal for headgear
Assignee3M Innovative Properties Company
InventorsThomas J. Brace, Sean R. Kilmer, Alan J. Solyntjes, Steven W. Stavos
Life of this patent
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Abstract
An article of headgear that has a head-covering article, a lens moveably attached to the head-covering article, and a seal attached to the lens, the seal comprising a first polymeric material and a second polymeric material, the first polymeric material having a greater tensile modulus than the second material. In an exemplary embodiment, the lens is moveable from a first, lowered position to a second, raised position, and when in the first, lowered position, the seal sealingly engages the head-covering article. In some embodiments, the tensile modulus of the first polymeric material is at least about 5× greater or even about 10× greater than the tensile modulus of the second material.
Claims12
An article of headgear comprising:
- a head-covering article;
- a lens moveably attached to the head-covering article by a frame;
- and
- a seal attached to the lens, the seal comprising a first polymeric material and a second polymeric material, the first polymeric material having a greater tensile modulus than the second material;
- wherein the lens is moveable from a first, lowered position to a second, raised position, and when in the first, lowered position, the seal engages the head covering article.
An article of headgear comprising:
- a head-covering article;
- a lens moveably attached to the head-covering article by a frame, the lens having a curve associated therewith;
- a seal attached to the lens, the seal being curved and comprising a first polymeric material and a second polymeric material, the first polymeric material having a greater tensile modulus than the second material;
- wherein the lens is moveable from a first, lowered position to a second, raised position, and when in the first, lowered position, the seal engages the head covering article.
Dependencies are inferred from the claim text.