Appeal No. 1998-1650 Page 9
Application No. 08/715,749
the material of the block 3 to be deformed so that
simultaneously with the creation of the conical step 4, the
material is displaced and swaged to fill the countersunk edges
11 and 12 as seen in Figure 3. As a result of the
compression, the bearing block 3 lies with its outer
cylindrical face in secure engagement with the face of the
opening 9 so that the entire block 3 is immovably held in the
bushing 2. Wendel teaches (column 3, lines 20-22) the bushing
2 and block 3 can be made of different materials as for
example steel and bronze respectively.
Murray discloses a method of manufacturing an axial
bearing part made of a sintered metal powder having a carbon
content of less than 0.1 percent and having a plurality of
spiral grooves in at least one face thereof consisting of the
steps of forming in a pressing die a plurality of grooves
corresponding to the ridges between the grooves in the bearing
part, grinding the die face smoothly and thereafter pressing
the die face in the bearing part to form the spiral grooves.
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