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1. (WO2005015022) OIL PUMP ROTOR
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/015022    International Application No.:    PCT/JP2004/011479
Publication Date: 17.02.2005 International Filing Date: 10.08.2004
F04C 2/08 (2006.01), F04C 2/10 (2006.01)
Applicants: MITSUBISHI MATERIALS CORPORATION [JP/JP]; 5-1, Otemachi 1-chome Chiyoda-ku, Tokyo 1008117 (JP) (For All Designated States Except US).
HOSONO, Katsuaki [JP/JP]; (JP) (For US Only)
Inventors: HOSONO, Katsuaki; (JP)
Priority Data:
2003-207347 12.08.2003 JP
(JA) オイルポンプロータ
Abstract: front page image
(EN)Appropriate tooth profiles are given to an inner rotor and an outer rotor that mesh with each other, and as a result, pump performance and mechanical efficiency are prevented from being reduced and noise is prevented from occurring. At least either an inner rotor (110) or an outer rotor (120) has a tooth profile formed from a curve where a cycloid curve is bisected and separated and the gap is supplemented by a line or a curve.
(FR)Rotor intérieur et rotor extérieur dont les dents s'engrènent, ce qui optimise le fonctionnement et l'efficacité mécanique de la pompe et en limite le bruit. Au moins un rotor intérieur (110) ou un rotor extérieur (120) présente un profil de dent sous forme de courbe, à savoir une courbe cycloïde coupée et séparée, l'espace étant complété par une droite ou par une courbe.
(JA) 互いに噛み合うインナーロータおよびアウターロータの歯形を適切な形状に設定し、ポンプ性能や機械効率の低下防止、騒音の発生防止を図ること。  インナーロータ110およびアウターロータ120の少なくともいずれかが、サイクロイド曲線を2等分して離間させ、その間を直線または曲線で補完した曲線からなる歯面形状を有している。
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)