Title:
SUSPENSION SPRING AND SUSPENSION SPRING MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2015/098182
Kind Code:
A1
Abstract:
The suspension spring is provided with first sections (11b) and second sections (w1) that corrode more easily than the first sections (11b). The compressive residual stress in the area up to 0.5 mm from the surface of the second section (w1) is at least 800 MPa. Even if corrosion of the second section (w1) progresses to 0.5 mm from the surface, fatigue strength is maintained by the 800 MPa or greater compressive residual stress.
Inventors:
SAKAKIBARA TAKAYUKI (JP)
HIRATA YUICHI (JP)
KONDA AKIRA (JP)
HIRATA YUICHI (JP)
KONDA AKIRA (JP)
Application Number:
PCT/JP2014/072454
Publication Date:
July 02, 2015
Filing Date:
August 27, 2014
Export Citation:
Assignee:
CHUO HATSUJO KK (JP)
International Classes:
F16F1/02; B24C1/10; F16F1/18
Domestic Patent References:
| WO2010146898A1 | 2010-12-23 | |||
| WO2011129179A1 | 2011-10-20 | |||
| WO2004085685A1 | 2004-10-07 |
Foreign References:
| JP2006071082A | 2006-03-16 | |||
| JPH11241143A | 1999-09-07 | |||
| JPS56167938A | 1981-12-23 |
Attorney, Agent or Firm:
KAI-U PATENT LAW FIRM (JP)
Patent business corporation KAI-U Patent Law Firm (JP)
Patent business corporation KAI-U Patent Law Firm (JP)
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