Moisture resistant coatings for polymeric enclosures
AssigneeGore Enterprise Holdings, Inc.
InventorsChris S. Michalak, Dave DeGuiseppi
Life of this patent
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Abstract
A moisture resistant housing assembly is provided, the housing defining an internal space and an ambient space surrounding said internal space, the housing constructed at least partially of a polymeric material and a moisture barrier layer covering a portion of the polymeric material, the moisture barrier layer having a moisture permeation coefficient that is lower than the moisture permeation coefficient of the polymeric material.
Claims16
A lighting assembly comprising:
- a) a lamp housing defining an internal space and an ambient space surrounding said internal space, said lamp housing comprises at least one polymeric lens and a polymeric case, the lens having a first moisture permeation coefficient;
- b) light source positioned within said internal space;
- c) desiccant disposed within the internal space;
- d) diffusion tube having a first opening proximate to the internal space and a second opening proximate to the ambient space, said diffusion tube providing fluid communication between the internal space and the ambient space;
- and
- e) moisture barrier layer disposed upon said lens, the moisture barrier having a second moisture barrier coefficient, wherein the second moisture barrier coefficient is less than the first moisture barrier coefficient.
A lighting assembly comprising:
- a) a lamp housing defining an internal space and an ambient space surrounding said internal space, said lamp housing comprising at least one polymeric lens and a polymeric case, the lens having a first moisture permeation coefficient;
- b) light source positioned within said internal space;
- and
- c) moisture barrier layer disposed upon at least the polymeric lens of said lamp housing, the moisture barrier having a second moisture permeation coefficient, wherein the second moisture permeation coefficient is less than the first moisture permeation coefficient.
A lens for use in a housing that defines an internal space, the lens comprising a polymeric lens material and a moisture barrier layer covering the lens, the moisture barrier layer being in the form of a coating or a film disposed on the lens, and the lens material having a first moisture vapor permeation coefficient that is greater than a second moisture vapor permeation coefficient of the moisture barrier layer.
Dependencies are inferred from the claim text.