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Patent Searching and Data


Title:
ENGINE VALVE MOVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2003/078801
Kind Code:
A1
Abstract:
An engine valve moving device in which a crank sprocket (25b) provided on a crank shaft (8) and an intermediate sprocket (38a) provided near cum shafts (36, 37) are interconnected through a timing chain (40) , and an intermediate gear (38b) secured to the intermediate sprocket (38a) is mated with cum gear (41, 42) secured to the cum shafts, wherein the diameter of the intermediate gear (38b) is smaller than the intermediated sprocket (38a), the intermediate gear (38b) is disposed behind the intermediate sprocket (38a) , and a peep hole (38c') through which the mating portions of the intermediate gear (38b) and the cum gears (41, 42) can be viewed is formed in the intermediate sprocket (38a).

Inventors:
Utsumi, Yoji c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka, 438-8501, JP)
Ito, Masahiro c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka, 438-8501, JP)
Application Number:
PCT/JP2003/001606
Publication Date:
September 25, 2003
Filing Date:
February 14, 2003
Export Citation:
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Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA (2500, Shingai Iwata-shi, Shizuoka, 438-8501, JP)
Utsumi, Yoji c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka, 438-8501, JP)
Ito, Masahiro c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka, 438-8501, JP)
International Classes:
F01L1/02; F01L1/46; F02B61/02; F02B67/06; F02B75/16; F02B75/02; (IPC1-7): F01L1/02; F02B67/06
Foreign References:
JPH0666111A
JPH09250314A
JPH0354249U
US6332441B1
JPS56118508A
JPH0996249A
JPS6276208U
JPH0225763U
JPH062522A
JPS6449643U
JP2000088066A
Other References:
See also references of EP 1477635A1
Attorney, Agent or Firm:
Shimoichi, Tsutomu (19-23-715, Utsubohonmachi 1-chome, Nishi-k, Osaka-shi Osaka, 550-0004, JP)
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