US 12,000,443 B2
Brake assembly with active piston retraction
Hyungjin Baek, Novi, MI (US); and Daniel Smith, Novi, MI (US)
Assigned to HL MANDO CORPORATION, Gyeonggi-Do (KR)
Filed by HL MANDO CORPORATION, Gyeonggi-do (KR)
Filed on Oct. 14, 2021, as Appl. No. 17/502,021.
Prior Publication US 2023/0123351 A1, Apr. 20, 2023
Int. Cl. B60T 13/74 (2006.01); B60T 1/06 (2006.01); B60T 13/58 (2006.01); F16D 55/226 (2006.01); F16D 65/18 (2006.01); F16D 65/42 (2006.01); F16D 65/38 (2006.01); F16D 121/24 (2012.01); F16D 125/40 (2012.01); F16D 125/58 (2012.01); F16D 127/02 (2012.01); F16H 25/20 (2006.01)
CPC F16D 55/226 (2013.01) [B60T 1/065 (2013.01); B60T 13/58 (2013.01); B60T 13/741 (2013.01); B60T 13/746 (2013.01); F16D 65/183 (2013.01); F16D 65/42 (2013.01); F16D 2065/386 (2013.01); F16D 2121/24 (2013.01); F16D 2125/40 (2013.01); F16D 2125/58 (2013.01); F16D 2127/02 (2013.01); F16H 25/20 (2013.01); F16H 2025/2075 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A brake assembly comprising:
a brake piston configured to be movable for a brake apply or release, the brake piston having an inner wall forming a piston cavity, wherein a groove is formed on the inner wall of the brake piston;
a linearly movable structure positioned within the piston cavity of the brake piston, the linearly movable structure configured to be linearly movable within the piston cavity in response to rotation of a rotatable structure operably coupled to the linearly movable structure; and
a resilient material, wherein at least a part of the resilient material is located within the groove formed on the inner wall of the brake piston and an other part of the resilient material is disposed on an outer surface of the linearly movable structure positioned within the piston cavity of the brake piston so that the resilient material is engageable with side walls of the groove formed on the inner wall of the brake piston to move the brake piston by a restoring force of the resilient material in response to linear movement of the linearly movable structure,
wherein the resilient material does not contact a circumferential surface formed between the side walls of the groove of the brake piston so that the resilient material is movable between the side walls of the groove of the brake piston without contacting the side walls of the groove of the brake piston.