Title:
LEAF SPRING DEVICE AND METHOD FOR MANUFACTURING LEAF SPRING DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/080249
Kind Code:
A1
Abstract:
Provided is a leaf spring device (1) equipped with a main leaf spring (20) having an elastic section (20b) that generates elastic force when bent and eye sections (20a) formed at the ends of the elastic section (20b), with the elastic section (20b) and the eye sections (20a) being annealed. Also provided is a method for manufacturing this leaf spring device (1). The eye sections (20a) are formed by rolling the ends of the elastic section (20b) into a circular shape. The eye sections (20a) are annealed at a higher temperature than the elastic section (20b).
More Like This:
JPH04297312 | SUSPENSION FOR VEHICLE |
Inventors:
KAYAHARA HIDENORI (JP)
TSUJI HIROTO (JP)
KUWATSUKA SHINICHIRO (JP)
TSUJI HIROTO (JP)
KUWATSUKA SHINICHIRO (JP)
Application Number:
PCT/JP2015/081643
Publication Date:
May 26, 2016
Filing Date:
November 10, 2015
Export Citation:
Assignee:
NHK SPRING CO LTD (JP)
International Classes:
F16F1/18; B21D19/00; B21D53/00; B60G11/04; C21D9/02; F16F1/02
Foreign References:
JPS53147158A | 1978-12-21 | |||
JP2006212655A | 2006-08-17 | |||
US20150091225A1 | 2015-04-02 |
Other References:
See also references of EP 3222872A4
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P. C. (JP)
Patent business corporation Isono international patent trademark office (JP)
Patent business corporation Isono international patent trademark office (JP)
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