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US 11,725,609 B2Granted
Passive infrared reduction device
AssigneeThe Boeing Company
InventorsCarl King, Kal V. Geiler
Life of this patent
Estimating the term…
Abstract
A line of sight blocker including a cover defining a duct bounded by the cover and a heated surface when the cover is fastened over the heated surface. The cover blocks transmission of infrared radiation emitted from the heated surface; the cover comprises a material having a lower thermal conductivity than the heated surface; and the duct comprises a vent and a path for latent heat from the heated surface to escape through the vent.
Claims20
A line of sight blocker, comprising:
- a cover defining a duct bounded by the cover and a heated surface when the cover is fastened over the heated surface, wherein:
- the duct comprises a first sidewall and a second sidewall,
- the cover comprises the first sidewall and the second sidewall comprises the heated surface,
- the duct comprises a width comprising a spacing between the first sidewall and the heated surface when the first sidewall is facing the heated surface, the cover blocks transmission of infrared radiation emitted from the heated surface,
- the cover comprises a material having a lower thermal conductivity than the heated surface, and
- the duct comprises a vent and a path for heat from the heated surface to escape through the vent.
3 more elements
An apparatus, comprising:
- a device including a heated surface emitting infrared radiation when the device is in operation;
- a cover disposed over the heated surface;
- and
- a gap between the cover and the heated surface, wherein the gap comprises a path for latent heat from the heated surface to escape from between the cover and the heated surface, wherein:
- the cover is conformal with the heated surface and defines a duct when fastened to the device including an engine drain line having the heated surface, a hydraulic line having the heated surface, an electronic circuit including the heated surface, or a box housing the electronic circuit and the box includes the heated surface;
- or
- the device comprises a first surface and a second surface, the second surface frictionally engaging the first surface during the operation so as to heat the first surface into the heated surface through friction, or
- the apparatus comprises a de-rotation unit including the heated surface, an inner can, an outer can, and bearings between the inner can and the outer can.
5 more elements
An apparatus comprising:
- a shroud that removably and retrofittably couples to a mast, wherein the shroud is sized and shaped to draw air in a gap between the shroud and the mast, and
- the gap forms an insulation layer and provides a path for latent heat from the mast to escape.
Dependencies are inferred from the claim text.