Rotary expansible chamber devices – Specific material
Patent
1995-12-12
1998-04-07
Freay, Charles G.
Rotary expansible chamber devices
Specific material
418133, 428551, F01C 2100
Patent
active
057356793
ABSTRACT:
A motor driven by air or other fluid, or a pump for pumping air or another fluid, including a rotor having a porous metal body formed of compacted and sintered metal particles and containing polytetrafluoroethylene embedded within the pores of the body. The metal particles are preferably primarily of iron, with a smaller amount of copper at least partially dissolved in the iron. The metal body carries vanes which are received slidably within slots in the body and are movable radially relative thereto and are preferably formed of resinous plastic material.
REFERENCES:
patent: 3705450 (1972-12-01), Morisaki
patent: 4380270 (1983-04-01), Ludwig
patent: 4415321 (1983-11-01), Okazaki
patent: 4666787 (1987-05-01), Bickle
patent: 4767677 (1988-08-01), Kuwayama
patent: 4804317 (1989-02-01), Smait et al.
patent: 4820140 (1989-04-01), Bishop
patent: 4923761 (1990-05-01), Shindo
patent: 4986036 (1991-01-01), Hutchins
patent: 5253990 (1993-10-01), Hutchins
Military Standard MIL -STD -276 entitled "Military Standard Impregnation of Porous Nonferrous Metal Castings".
"DSM" Brochure describes a plastic sold under the trademark Stanyl.
Freay Charles G.
Hutchins Manufacturing Co.
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