CAM LIFTER DEVICE - Koyo Seiko Co., Ltd.

Title:

CAM LIFTER DEVICE

Document Type and Number:

Japanese Patent JP3688450

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To improve the maximum load ability of a cam by eliminating the concentration of damage to a material, represented by equivalent stress or the maximum shearing stress.
SOLUTION: The change of a cam 12 to the axial direction in a gap between the peripheral face of the cam 12 and the upper end face 15 of a valve lifter 14 is so determined as to uniform damage to a material, represented by equivalent stress distribution or the maximum shearing stress distribution in the axial direction. In this way, the concentration of damage to the material, represented by equivalent stress or the maximum shearing stress, at the edges of both axial ends of the cam 12 is prevented. As a result, the static maximum load capacity and the dynamic maximum load capacity of the cam 12 are improved, equivalent to eliminating the concentration of damage to the material, represented by equivalent stress or the maximum shearing stress.

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Inventors:

Shigeo Kamamoto

Application Number:

JP30309297A

Publication Date:

August 31, 2005

Filing Date:

November 05, 1997

Export Citation:

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Assignee:

Koyo Seiko Co., Ltd.

International Classes:

F01L1/08; F16H25/08; F16H53/02; (IPC1-7): F16H53/02; F01L1/08; F16H25/08

Domestic Patent References:

JP5036005U

Attorney, Agent or Firm:

Aoyama Aoi
Hiroshi Yamazaki

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