Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Reexamination Certificate
2009-03-20
2011-12-27
Landau, Matthew (Department: 2813)
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
C415S111000, C415S229000, C384S463000, C384S476000, C384S907000, C184S006110, C184S099000
Reexamination Certificate
active
08083469
ABSTRACT:
A bearing lubrication system for a high temperature bearing, such as in a small gas turbine engine for a UAV, in which the bearing and lubricant requires a long shelf life, where the bearing includes a solid lubricant movable within a chamber formed within a housing and located adjacent to the bearing. The solid lubricant is biased by a spring toward the bearing and abuts against a runner that rotates along with the rotor shaft during engine operation. A cooling air passage opens into a space formed between the bearing and the solid lubricant to supply cooling air through the bearing. When the engine operates, heat is transferred through the runner to the solid lubricant to melt the lubricant. Rubbing of the runner against the biased solid lubricant will also melt the lubricant. The melting lubricant is carried by the cooling air through the bearing to provide both cooling and lubrication for the bearing.
REFERENCES:
patent: 4381824 (1983-05-01), Pastusek
patent: 4797011 (1989-01-01), Saeki et al.
patent: 5080195 (1992-01-01), Mizumoto et al.
patent: 6405811 (2002-06-01), Borchardt
patent: 2004/0202536 (2004-10-01), Macfadyen
Florida Turbine Technologies, Inc.
Landau Matthew
Nicely Joseph C
Ryznic John
LandOfFree
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