Patent References 3502004 Structurally strong heat insulator for high transient temperatures Hydraulically actuated sliding-caliper disc brake Caliper pistons with improved heat isolation Patent #: 6446767 InventorsAssigneeApplicationNo. 10347697 filed on 01/22/2003US Classes:188/264GInsulatorsExaminersPrimary: Schwartz, Christopher P.Attorney, Agent or FirmInternational ClassF16D 65847AbstractA brake caliper has a piston retained in a bore that abuts a brake pad for moving the brake pad into selective engagement with a rotor to effect braking. The piston has a composite cap that is formed of a cap piece made of strong material, such as steel, and an insulator, made of polyimide resin material, for example. The insulator is preferably in the form of a ring clamped between the cap piece and the piston to create a thermal break and minimize heat transfer from the brake pad to the piston and caliper assembly. | |