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Stress relief in a magnetic thrust bearing

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16C-039/06   
미국특허분류(USC) 310/090.5 ; 310/090 ; 384/100 ; 384/102
출원번호 US-0219215 (1998-12-22)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Wood, Phillips, VanSanten, Clark & Mortimer
인용정보 피인용 횟수 : 11  인용 특허 : 13
초록
▼

Undesirably high stresses are minimized in a magnetic thrust bearing (15) having a disc (52) mounted on a shaft (54). The disc (52) is flanked on both sides (60,62) by respective armatures (68,70) which act to apply a magnetic field to the disc (52) to locate the same at a desired location along the axis (66) of the rotor (14) of the machine in which the thrust bearing (15) is employed. A peripheral, radially outwardly opening, annular groove (76) is disposed in the outer periphery (64) of the thrust bearing disc (52) to relieve stresses during operation...

대표
청구항
▼

[ We claim:] [1.] In a high speed dynamoelectric machine the combination ofa stator;electrical windings on said stator;a rotor journalled for rotation about an axis for rotation within said stator; anda magnetic thrust bearing for accommodation of forces applied to said rotor along said axis and including a disc of magnetic material connected to said rotor and having a periphery in the form of a surface of revolution concentric with said axis; armatures flanking said disc for applying magnetic forces to said disc to position the same at a desired locatio...

이 특허에 인용된 특허 (13)

  1. Glass Dieter (Sandhausen DEX) Eixelsberger Wilfried (Hirschberg DEX) Bhrer Peter (Lautertal DEX). Axial magnet bearing. USP1990064935654.
  2. Renshaw Anthony A. (Albany NY) Lee Minyoung (Schenectady NY). Bearings for x-ray tubes. USP1996015483570.
  3. Komura Osamu (Itami JPX) Katayama Tetsuya (Itami JPX) Yamakawa Akira (Itami JPX) Matsunuma Kenji (Itami JPX) Yasuoka Norio (Itami JPX) Higuchi Matsuo (Itami JPX) Miyake Masaya (Itami JPX). Composite bearing structure. USP1997105675201.
  4. Tanaka Katsuhiko (Yamato-shi JPX) Sato Takanobu (Odawara-shi JPX) Sakatani Ikunori (Fujisawa-shi JPX). Dynamic pressure gas bearing device. USP1989024805972.
  5. Kamiya, Masashi; Sumiya, Mitsuo; Yamaguchi, Ryoji. Electric motor with hydrodynamic pressure and magnetic thrust bearings. USP1985084538081.
  6. Sapuppo Michele ; Cardarelli Donato ; Dauwalter Charles R.. Flat-pack gyroscope. USP1999035881598.
  7. Maruyama Teruo (Hirakata JPX) Taguchi Tatsuhisa (Katano JPX) Abe Yoshikazu (Neyagawa JPX) Hasegawa Mikio (Neyagawa JPX). Fluid rotating apparatus. USP1994105354179.
  8. Matthias Heinz-Bernd (Frankenthal DT) Klepp Christian (Frankenthal DT) Koll Gunter (Frankenthal-Studernheim DT). Lubricated thrust bearings for pump and motor units. USP1976033947153.
  9. McSparran Lloyd W. (Pittsburgh PA). Magnetic axial force actuator construction. USP1992105153475.
  10. Kliman Gerald Burt ; Preston Mark Alan. Magnetic axial thrust bearings fabricated on individual stator segments. USP1998015705869.
  11. New Nigel H. (Harrow GBX). Magnetic bearing back-up. USP1994105355040.
  12. McSparran Lloyd W. (Pittsburgh PA). Magnetic thrust bearing with high force modulation capability. USP1990044920291.
  13. Weilbach August O. (La Habra CA) Hanson Derald F. (Phoenix AZ) Smith C. Dwight (Phoenix AZ). Self-pressurizing gas supported surface-roughness bearing. USP1991055019738.

이 특허를 인용한 특허 피인용횟수: 11

  1. Shimada,Akihiro. Axial magnetic bearing apparatus. USP2007097274123.
  2. Shimada,Akihiro. Axial magnetic bearing apparatus. USP2007107285887.
  3. Shimada,Akihiro. Axial magnetic bearing apparatus. USP2007067235907.
  4. Shimada,Akihiro. Axial magnetic bearing apparatus. USP2007097268453.
  5. Shimada,Akihiro. Axial magnetic bearing apparatus. USP2006117138738.
  6. Massini, Andrea; Mei, Luciano; Bigi, Manuele. Electro-magnetic bearing assembly with inner ventilation to cool the bearing. USP20181110119572.
  7. Klaass, Reinhard M.; Takeuchi, Donald I.; Schenk, Bjoern. Gearless/oilless gas turbine engine. USP2005046881027.
  8. Shimada,Akihiro. Magnetic bearing spindle. USP2007057224094.
  9. Nims Robert A.. Microturbine cooling system. USP2001066246138.
  10. Robert A. Nims. Microturbine cooling system. USP2002096455964.
  11. Obara, Rikuro. Motor and method of manufacturing the same. USP2003126657340.

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