US 12,338,867 B2
Disk brake disk, disk brake and manufacturing method
Gianluigi Maronati, Curno (IT); Nino Ronchi, Curno (IT); and Massimo Damiani, Curno (IT)
Assigned to Brembo S.p.A., Curno (IT)
Appl. No. 17/757,720
Filed by BREMBO S.p.A., Curno (IT)
PCT Filed Dec. 15, 2020, PCT No. PCT/IB2020/061924
§ 371(c)(1), (2) Date Jun. 20, 2022,
PCT Pub. No. WO2021/130601, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 102019000025222 (IT), filed on Dec. 23, 2019.
Prior Publication US 2023/0035715 A1, Feb. 2, 2023
Int. Cl. F16D 65/12 (2006.01); F16D 65/00 (2006.01); F16D 65/02 (2006.01)
CPC F16D 65/123 (2013.01) [F16D 65/125 (2013.01); F16D 65/128 (2013.01); F16D 2065/1308 (2013.01); F16D 2065/1328 (2013.01); F16D 2065/1344 (2013.01); F16D 2200/0013 (2013.01); F16D 2250/0015 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A disk brake disk, made in a single piece by co-casting two materials, comprising:
a bell made of a first material and configured to connect said disk brake disk to a rotating support;
a braking band made of a second material;
said disk brake disk defining an axial direction (A-A) coinciding with, or parallel to, a rotation axis (X-X), a radial direction (R-R) orthogonal to said rotation axis (X-X) and defining a radially outer direction when moving away from said rotation axis (X-X), and a radially inner direction when moving close to said rotation axis (X-X), a circumferential direction (C-C) orthogonal to said axial direction (A-A) and to said radial direction (R-R), and a tangential direction (T-T) orthogonal to said axial direction (A-A) and to said radial direction (R-R) in a point of intersection of said axial direction (A-A) and to said radial direction (R-R); wherein
said bell comprises a bell body having a radially outer bell body portion;
said bell forms a plurality of bell projections in a single piece, which radially protrude from said radially outer bell body portion according to said radially outer direction;
each bell projection comprises a projection base, arranged close to said radially outer bell body portion, and a distal projection portion, arranged far from said radially outer bell body portion;
wherein
said braking band comprises a braking band body;
said braking band body is connected and intimately coupled to said distal projection portion, wrapping said distal projection portion all around and at the top; and
wherein
adjacent projection bases of said plurality of bell projections are joined to one another by a bell rib made in a single piece with said bell body;
the bell rib comprises an inner axial rib face and an opposite outer axial rib face; and
said braking band body is connected and intimately coupled to said inner axial rib face, leaving said outer axial rib face free and externally facing said disk brake disk.