[특허]Compliant foil hydrodynamic fluid film radial bearing

Compliant foil hydrodynamic fluid film radial bearing 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16C-032/06
출원번호	US-0229205 (1994-04-18)
발명자 / 주소	Bosley Robert W. (18104 Hoffman Ave. Cerritos CA 90701)
인용정보	피인용 횟수 : 54 인용 특허 : 0

초록 ▼

A compliant foil hydrodynamic fluid film radial bearing is disclosed which is comprised of a cylindrical rotor, fluid foil(s), spring foil(s), and a foil retaining cartridge. The cartridge has circumferentially undulating cam shaped lobes or has circumferential ramps and joggles that induce the spring and fluid foils to form converging fluid-dynamic wedge channels which compress and pressurize the process fluid and diverging channels which draw in makeup fluid. A spring foil is formed as a thin, flat sheet having chemically etched slots of a pattern that causes cantilever beams to stand erect and function as springs when the foil is bent to install in the cartridge. When a single foil is used in lieu of a plurality of foils made up of segments, that foil is preloaded away from the rotor by bending stresses in the foil that are induced when the foil is bent to fit into the cartridge. Additional forces to preload the foils away from the rotor can be applied to the ends of the foils by a circumferential preload bar in the aperture of the cartridge. This combination of preloading techniques results in low starting torque, low lift off speed and small sway space. The fluid foil, when used with the cam shaped cartridge, is vented in the area of the diverging channels to admit the working fluid, and has V-shaped grooves chemically etched into the outer surface of the foil near each end to tailor the foil\s bending stiffness.

대표청구항 ▼

A compliant foil hydrodynamic fluid film radial bearing comprising: a cartridge housing defining an aperture having a non-circular, interior contour, a spring foil member disposed within said aperture of said cartridge housing and conforming to said non-circular, interior contour, a fluid foil member disposed within said spring foil member and conforming to the shape of said non-circular interior contour, and a rotor rotatably positioned within said fluid foil member, said spring foil member and said aperture of said cartridge housing wherein, rotation of said rotor generates fluid film forces which support and control the position of said rotor within said non-circular, interior contour of said aperture.

이 특허를 인용한 특허 (54)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Compliant foil hydrodynamic fluid film radial bearing 원문보기

초록 ▼

대표청구항 ▼

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이 특허를 인용한 특허 (54)

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Compliant foil hydrodynamic fluid film radial bearing 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (54)

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