Title:
BRAKE DISC FOR RAILROAD VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/210475
Kind Code:
A1
Abstract:
This brake disc (100) comprises a disc body (10) and fins (20). The thickness of the disc body (10) decreases toward the inside in the radial direction. The fins (20) are disposed in a radial formation on the reverse surface (12) of the disc body (10). At least part of each fin (20) has a bolt hole (22) in the radial-direction center thereof. The disc body (10) includes protrusions (13). The protrusions (13) are formed on the reverse surface (12) in portions positioned further outward in the radial direction than the bolt holes (22). Each of the fins (20) includes a top surface (21) and a convex part (25). The convex part (25) protrudes inward in the radial direction beyond an imaginary plane (S1). The imaginary plane (S1) passes through an end part (212) of the top surface (21) and an inner peripheral edge (122) of the reverse surface (12).
Inventors:
NOGAMI HIROSHI (JP)
KATO TAKANORI (JP)
TAMURA KENJI (JP)
MIYABE NARUO (JP)
KANAMORI SEIJI (JP)
KITAZAWA YUZUKA (JP)
KAMIYA MASAHIRO (JP)
KATO TAKANORI (JP)
TAMURA KENJI (JP)
MIYABE NARUO (JP)
KANAMORI SEIJI (JP)
KITAZAWA YUZUKA (JP)
KAMIYA MASAHIRO (JP)
Application Number:
PCT/JP2022/014829
Publication Date:
October 06, 2022
Filing Date:
March 28, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
B61H5/00; F16D65/12; F16D65/847
Domestic Patent References:
| WO2014038621A1 | 2014-03-13 | |||
| WO2014169196A1 | 2014-10-16 | |||
| WO2010071169A1 | 2010-06-24 |
Foreign References:
| JP2012530231A | 2012-11-29 | |||
| JPH0874900A | 1996-03-19 | |||
| JP2001090759A | 2001-04-03 | |||
| JPH05346126A | 1993-12-27 | |||
| JPH07269613A | 1995-10-20 | |||
| JPS521266B1 | 1977-01-13 |
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
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