Document ZGpxepmanVKvQ8pXM7yEebj8

United States Patent 4,240,530 Page 6 of 6 with synthetic latex and pre-dned, such as is employed as the raw material m the manufacture of fabric|>ased laminates Another material is a rubber-modified epoxide resin film This matenal gives Extremely high shear values, e.g., on the order of 3000 kp It has also been found that the earner plate 1 can be assembled utilizing three parts joined by two bondmg layers 4 Refemng to FIG. 1, it is seen that part 2 of the earner plate, l e, the part which is contacted by the brake piston, is not as long as part 3 Moreover, it has been found desirable to make the width of part 2 one millimeter less than the width of the friction lining 5 and part 3 When this is done, part 2 does not extend to the two lateral edges of the brake pad which, dunng braking, lie against the brake housing. Consequently, part 2 does not come into contact with the brake housing and does not form a bridge by means of which vibrations and heat can be transferred from part 3 to the brake housing and brake piston via part 2. It has also been found that embossings eight millimeters wide and one millimeter m depth can be formed m parts 2 and 3 of the carrier plate 1 m place of the calotte-shaped embossings 7 and 8 shown m FIGS. 1-3. One of the embossings is located parallel to the cut line II--II of FIG. 1 which is parallel to the two lateral edges of the brake pad A third embossing is located in the middle of part 3 of the earner plate 1 in the direction of the line III--III of FIG. 1. To obtain oblique centering surfaces like those present in the calotte-shaped embossings, the centering recesses and projections are sphencally curved at their ends in the longitudinal direction and provided with a rounded cross-section in the transverse direction. This results m the same centenng effect as m the calotte-shaped embossings. fcfrom the above it can be seen that the calotte-shaped embossings provide centenng recesses and projections with oblique centenng surfaces which permit accurate alignment of the parts 2 and 3 of the earner plate 1 and also permit an elastic bonding layer 4 having a uniform thickness. Consequently, the brake pad of the instant invention has a earner plate 1 with a high shear strength but in which metal-tometal contact of the shear plate parts is avoided, with the result that the shear plate parts are isolated from each other for excellent vibration damping and heat insulation * * ie ie ie http //oatft usoto gov/netacei/nDh-Parser`?Sectl=PT02&Sect2=HITOFF&u=/netahtml/sea 10/18/2003