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US 4,276,332 AGranted
Fire proof cable tray enclosure
OwnerGeorge K. Castleinventor
Life of this patent
Estimating the term…
Abstract
A fire proof cable tray constructed of assemblable units, each of which comprises a metal frame having a wire mesh covering attached thereto, an intumescent coating encapsulating the wire mesh, a layer of an inorganic, non-combustible fiber mat and a sheet of metal foil. The foil, fiber mat and encapsulated screen are mechanically secured together. The units can be assembled on the job site to form a cable tray for protecting control lines in a refinery or chemical plant.
Claims11
A fire protective insulating product having an assemblable unit comprising:
- an essentially rectangular metal frame,
- said frame supporting and attached to a wire mesh,
- a coasting of an intumescent material encapsulating said wire mesh, and
- secured to one surface of said encapsulated wire mesh, a insulative layer of an inorganic, non-combustible fiber.
1 more element
A fire protective insulating product having an assemblable unit comprising:
- an essentially rectangular galvanized metal frame, at least two opposite sides thereof being angularly shaped,
- a wire mesh covering at least one side of, and attached to, said metal frame,
- said wire mesh being encapsulated by at least three-sixteenth's inch intumescent material,
- an insulative layer of an inorganic, non-combustible fiber mat being attached to at least one side of said metal frame, and
- a metal foil layer secured to said assemblable unit as the last layer thereof.
2 more elements
Dependencies are inferred from the claim text.