Appeal No. 2003-1254 Page 8
Application No. 09/284,793
compression. The resilient material of the spring means 17 is preferably polyurethane,
and the spring means 17 can have the shape of an elastic strip or similar of
polyurethane.
Strömberg's spring means 17 is preferably arranged such that the tightening
ruler 9 engages the side wall 8b of the slot 6 through the spring means 17.
Furthermore, that side 9a of the tightening ruler 9 facing the side wall 8b of the slot 6
may be provided with at least one recess 9b for the spring means 17, which is of such
thickness that it protrudes out of the recess 9b and engages the side wall 8b of the slot
6. That portion 17a of the spring means 17 situated outside the recess 9b has, for
example, a width of 0.3-1.0 mm, preferably about 0.5 mm. Furthermore, the spring
means 17 preferably has a height which exceeds half the height of the tightening ruler
9. Additionally, a plurality of spring means 17 are preferably disposed along the
tightening ruler 9, preferably on the portions thereof located between the
height-adjustment screws 13 provided thereon.
Figure 5 of Strömberg is a schematic view of the retaining device before wedging
up the knife blade. The original shape of the spring means 17, before the knife blade 2
is wedged up in the slot 6, is shown. By means of the height-adjustment device H, the
wedge device K is set at a height in the slot 6 adapted for wedging up knife blades 2 of
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007