Title:
CONNECTING ROD SPLIT CONSTRUCTION
Document Type and Number:
WIPO Patent Application WO/2004/007980
Kind Code:
A1
Abstract:
A connecting rod split construction made by applying a surface hardening treatment to a large end (1b) having a crank pin hole (1d), splitting the large end (1b) into a rod (2) and a cap (3), and joining the rod (2) and the cap (3) to each other with their split surfaces put together and properly positioned by an engaging bolt (4), wherein the inner peripheral surface of the crank pin hole (1d) of the large end (1b) is formed with an axially extending break starting point (5), whose axial length (L1) is less than the axial length (L2) of the inner peripheral surface.
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Inventors:
KUBOTA TSUYOSHI (JP)
IWASAKI SHINYA (JP)
IWASAKI SHINYA (JP)
Application Number:
PCT/JP2003/008808
Publication Date:
January 22, 2004
Filing Date:
July 10, 2003
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
KUBOTA TSUYOSHI (JP)
IWASAKI SHINYA (JP)
KUBOTA TSUYOSHI (JP)
IWASAKI SHINYA (JP)
International Classes:
B23K26/364; F16C7/02; F16C9/04; (IPC1-7): F16C7/02
Foreign References:
| JPS5821017A | 1983-02-07 | |||
| US4569109A | 1986-02-11 | |||
| US5974663A | 1999-11-02 | |||
| US4569109A | 1986-02-11 |
Other References:
See also references of EP 1553313A4
Attorney, Agent or Firm:
Shimoichi, Tsutomu (Utsubohonmachi 1-chome Nishi-k, Osaka-shi Osaka, JP)
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