Dual type composition brake block specifically designed for use in predetermined type brake systems

摘要

A dual type composition brake block member specifically designed for use in predetermined type brake systems. The brake block member consists of a brake surface having a predetermined configuration and a predetermined surface area. It further includes a first low friction type composition material having a predetermined friction range and extends over a first predetermined portion of the surface area of the brake surface. It further includes a second high static friction type composition material having a second predetermined friction range. The second high static friction type composition material extends over a second portion of the surface area of the brake surface. One of such first low friction type composition material and such second high static friction type composition material being formed as a discrete insert type member and the opposite one of such first low friction type composition material and such second high static friction type composition material being formed around the insert of such first low friction type composition material and such second high static friction type composition material during production of the brake block member. Such one of such first low friction type composition material and such second high static friction type composition material being formed as the discrete insert member extends into such opposite one of such first low friction type composition material and such second high static friction type composition material to a predetermined depth of the brake block member.