Appeal 2007-1908
Application 10/442,950
1 positioners 74, 76 whereby each of the tool on shafts 66, 68, 70 and
2 72 is moved to a parking position adjacent the side frame 40.
3 Thereafter, in a known manner, the tool positioners 74, 76 position the
4 respective tools on their associated shafts in accordance with the
5 requirements for the next production run.” (Coburn '495, col. 10, ll.
6 43-50).
7 From our review of Coburn '761 we make the following findings of
8 fact:
9 12. A corrugated paperboard slitter scorer has slitting and
10 scoring heads movable individually or as a group along an
11 expandable shaft by way of a master shifter. The expandable
12 shaft provides a friction drag to maintain a head in position
13 until all heads are simultaneously locked to the shaft.
14 (Coburn ‘761, abstract).
15 13. The general sequence of events for changing the position of
16 the heads 34 is as follows. Tube 46 is exhausted. The master
17 shifter 64 moves from one end of the shaft 30 to the other so
18 that all of the heads are moved to one end of the shaft 30.
19 The fingers 76-82 on the master shifter 64 are then
20 retracted. Thereafter, the master shifter 64 moves and
21 distributes the heads 34 to the new position for the next
22 production order.
23 As the master shifter 64 moves, it pushes all of the heads
24 in front of it until the last head reaches its predetermined
25 position. At that point, the master shifter stops and the fingers
26 76-82 are retracted. Then the master shifter moves forward
27 through a distance corresponding to the thickness of the last
28 head at which point the fingers are then extended. Thereafter,
29 the master shifter 64 continues to push the remainder of the
30 heads until the then existing last head reaches its predetermined
31 position. The sequence is then repeated until all of the operative
8
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Last modified: September 9, 2013