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US 5,904,017 AGranted
Photoluminescent emergency egress accessory
AssigneeDuramax, Inc.
InventorsJerald L. Glatz, William C. Martin
Life of this patent
Estimating the term…
Abstract
A photoluminescent safety accessory for attachment to walls, floors, stairs, handrails, ceilings or the like located along emergency egress routes. The accessory is comprised of a nonluminescent material and a photoluminescent material integrally formed with and molecularly bonded to the nonluminescent material, the luminous material becoming illuminated upon the extinguishing of the ambient light. A coextrusion system for integrally extruding the photoluminescent safety accessory is also disclosed.
Claims2
A wall base comprising:
- a non-luminescent upper portion having a predetermined height, a flat back surface for engaging the lower base of a wall, a flat front surface generally parallel to said back surface and a curved surface connecting the upper portions of said back surface and said front surface;
- a non-luminescent flared lower portion integral with said upper portion and extending forwardly outward from said upper portion, said lower portion having a lip on the forward part of said lower portion, said lip extending along the bottom of said lower portion to form a lower edge of said lower portion;
- and
- a photoluminescent strip extending laterally across said upper portion near said curved convex surface, said strip having a predetermined height less than the predetennined height of said upper portion and becoming luminous when the ambient light is extinguished;
- said non-luminescent upper portion and said photoluminescent strip being made from extrudable materials, and said non-luminescent upper portion and said photoluminescent strip having been coextruded and molecularly bonded to one another to form an integrally formed product.
2 more elements
A wall cove base comprising:
- a non-luminescent flat member having an upper portion and a lower gauging portion, said upper portion having a predetermined height, and said upper portion and said lower portion gauging portion having a generally planar front surface and a substantially continuous rear surface for being attached to a wall surface, said lower gauging portion having a height and thickness less than the height and thickness of said upper portion, said front surface and said rear surface each having an upper part of said front surface, a transition zone including a bottom wall on said upper portion which tapers downwardly and forwardly toward said front planar surface, said bottom wall intersecting said front planar surface and forming a tip which points substantially downwardly;
- and
- a photoluminescent strip extending laterally across the front surface of said upper portion in close proximity to said convex, curved surface, said photoluminescent strip having, a predetermined height which is less than the predetermined height of said upper portion, and said photoluminescent strip becoming luminous when the ambient light is extinguished;
- said non-luminescent upper portion and said photoluminescent strip being made from extrudable materials, said non-luminescent upper portion and said photoluminescent strip having been coextruded and molecularly bonded to one another to form an integrally formed product.
1 more element
Dependencies are inferred from the claim text.