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Patent Searching and Data


Title:
PISTON RING
Document Type and Number:
WIPO Patent Application WO/2008/016010
Kind Code:
A1
Abstract:
Disclosed is a piston ring which can vary a tension under low-temperature and low-load conditions and a tension under high-temperature and high-load conditions, and therefore can minimize the friction loss and improve the fuel efficiency. The piston ring is formed by a titanium-tantalum shape memory alloy comprising tantalum in an amount of not less than 30 mol% and less than 40 mol%, with the remainder being titanium and unavoidable impurities.

Inventors:
MIYAZAKI, Shuichi (5-26, Matsushiro 5-chome Tsukuba-sh, Ibaraki 35, 3050035, JP)
宮崎 修一 (〒35 茨城県つくば市松代5丁目5-26 Ibaraki, 3050035, JP)
ONODA, Motonobu (Tochigi Works. 1111, Nogi, Nogi-machi, Shimotsuga-gu, Tochigi 14, 3290114, JP)
小野田 元伸 (〒14 栃木県下都賀郡野木町野木1111番地 日本ピストンリング株式会社 栃木工場内 Tochigi, 3290114, JP)
OKADA, Naoki (Tochigi Works. 1111, Nogi, Nogi-machi, Shimotsuga-gu, Tochigi 14, 3290114, JP)
Application Number:
JP2007/064902
Publication Date:
February 07, 2008
Filing Date:
July 30, 2007
Export Citation:
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Assignee:
NIPPON PISTON RING CO., LTD. (12-10, Honmachi-higashi 5-chome Chuo-ku, Saitama-sh, Saitama 03, 3388503, JP)
日本ピストンリング株式会社 (〒03 埼玉県さいたま市中央区本町東五丁目12番10号 Saitama, 3388503, JP)
MIYAZAKI, Shuichi (5-26, Matsushiro 5-chome Tsukuba-sh, Ibaraki 35, 3050035, JP)
宮崎 修一 (〒35 茨城県つくば市松代5丁目5-26 Ibaraki, 3050035, JP)
ONODA, Motonobu (Tochigi Works. 1111, Nogi, Nogi-machi, Shimotsuga-gu, Tochigi 14, 3290114, JP)
小野田 元伸 (〒14 栃木県下都賀郡野木町野木1111番地 日本ピストンリング株式会社 栃木工場内 Tochigi, 3290114, JP)
International Classes:
C22C27/02; F02F5/00; F16J9/06; F16J9/26; C22C27/00; F02F5/00; F16J9/00; F16J9/26
Attorney, Agent or Firm:
ISHIKAWA, Yasuo (Park Shiba Building 2F, 17-11 Shiba 2-chome, Minato-k, Tokyo 14, 1050014, JP)
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