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US 5,640,853 AGranted
Method for venting cryogen
AssigneeThe Boeing Company
InventorsAnna L. Baker, Darryl F. Garrigus
Life of this patent
Estimating the term…
Abstract
A ceramic composite is provided comprising ceramic fibers and microparticles bound together as a porous matrix with a ceramic binder. The ceramic composite is particularly useful for transporting cryogenic fluids.
Claims3
A porous stopper for a cryogenic dewar permitting pressure relief caused by boil-off of the cryogen by allowing vapor to escape through pores in the stopper, comprising:
- a porous, felted mat of ceramic fibers and ceramic microparticles, the mat being sized for seating in a mouth of the dewar, the mat being bound together with a sol-gel binder and having a porosity of about 90-95%.
Dependencies are inferred from the claim text.