Appeal No. 1998-0616
Application No. 08/614,347
control element axially to the shaft member.
Matt discloses a camshaft for controlling valves in
internal combustion engines including a shaft 1 and at least
one cam 2 affixed to the shaft. The cam has a recess or
aperture 4 for receiving the shaft. The recess has at least
one radially inwardly directed projection 5 which engages a
corresponding groove in the shaft. At least one portion C of
the area of the shaft in which the cam is to be provided has a
diameter which is greater than the remaining areas of the
shaft. The increased diameter portion C of the shaft is a
bead-like material displacement which extends
circumferentially on the shaft. The cam is forced onto the
increased diameter portion of the shaft by means of a tool,
not illustrated. As a result, each projection 5 performs a
chip-removing procedure in the manner of a planing tool so as
to form a groove 9, in the increased diameter portion C as
illustrated in Figures 6 and 7. See col. 4, l. 57 through
col. 5, l. 11.
The appellants argue (brief, p. 8) that the grooves 9 are
formed by Matt in such a manner that no burr is formed. In
support, the appellants rely on Matt’s teaching that
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