US 11,773,932 B2
Pad return spring for a disc brake caliper body
Marco Fumagalli, Curno (IT); Mauro Mambretti, Curno (IT); Andrea Mecocci, Curno (IT); and Alberto Pendesini, Curno (IT)
Assigned to Brembo S.p.A., Bergamo (IT)
Appl. No. 17/415,549
Filed by BREMBO S.p.A., Curno (IT)
PCT Filed Dec. 19, 2019, PCT No. PCT/IB2019/061094
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/128946, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 102018000020401 (IT), filed on Dec. 20, 2018.
Prior Publication US 2022/0056969 A1, Feb. 24, 2022
Int. Cl. F16D 65/097 (2006.01); F16D 55/22 (2006.01); F16D 55/228 (2006.01); F16D 65/00 (2006.01); F16D 55/00 (2006.01); F16D 127/02 (2012.01)
CPC F16D 65/0972 (2013.01) [F16D 55/22 (2013.01); F16D 55/228 (2013.01); F16D 65/0075 (2013.01); F16D 2055/002 (2013.01); F16D 2127/02 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A pad return spring for a disc brake caliper body configured to straddle a brake disc, said brake disc comprising a first braking surface of brake disc and an opposite second braking surface of brake disc, said disc brake caliper body comprising:
a first elongated wheel-side element comprising an outer caliper side of first elongated wheel-side element and an inner caliper side of first elongated wheel-side element, wherein said outer caliper side of first elongated wheel-side element is suitable for facing a vehicle wheel and wherein at least one portion of the inner caliper side of first elongated wheel-side element is suitable for facing said first braking surface of brake disc by a first pad; and
a second elongated opposite wheel-side element comprising an outer caliper side of second elongated wheel-side element and an inner caliper side of second elongated wheel-side element, wherein at least one portion of the inner caliper side of second elongated wheel-side element is suitable for facing said second braking surface of brake disc by a second opposite pad;
said first elongated wheel-side element comprising at least one thrust means seat configured to receive thrust means configured to influence the first pad against said first braking surface of brake disc;
at least said second elongated opposite wheel-side element comprising at least two portions each defining a connecting seat configured to connect the disc brake caliper body to a support element for supporting the disc brake caliper body on the vehicle;
said disc brake caliper body further comprising at least one elongated element connecting bridge configured to connect said first elongated wheel-side element to said second elongated opposite wheel-side element so as to be suitable for straddling said brake disc;
said at least one elongated element connecting bridge comprising a middle connecting bridge which extends according to axial direction (A-A) and defines an outer middle bridge side externally facing the disc brake caliper body, an inner middle bridge side internally facing the disc brake caliper body, opposite to the outer middle bridge side, a middle bridge disc inlet side, a middle bridge disc outlet side, opposite to the middle bridge disc inlet side;
said pad return spring comprising a first pad retraction element and a second pad retraction element, each of said first pad retraction element and second pad retraction element defining a middle stretch, a first side stretch configured to influence said first pad, and an opposite second side stretch configured to influence said second opposite pad to move away said first pad and said second opposite pad from said first braking surface of brake disc and from said opposite second braking surface of brake disc at the end of a braking action;
wherein said first pad retraction element and said second pad retraction element are shaped as a folded band and comprise a plurality of overlapping sandwiched sheet layers;
said pad return spring further comprising an elongated connecting element which connects the first pad retraction element and the second pad retraction element to each other at said middle stretch;
said pad return spring further comprising anchoring means configured to removably restrain said pad return spring to said middle connecting bridge.