Material or article handling – Apparatus for moving intersupporting articles into – within,... – Stack forming apparatus
Reexamination Certificate
2000-08-28
2002-05-28
Skaggs, H. Grant (Department: 3652)
Material or article handling
Apparatus for moving intersupporting articles into, within,...
Stack forming apparatus
C414S793400, C271S218000
Reexamination Certificate
active
06394741
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an apparatus for stacking at least two sheets.
2. Description of Background Art
Apparatuses of the type concerned in the invention are used for stacking sheet substacks at least one sheet thick into higher stacks. From the prior art are known embodiments utilizing a carrier means similar to a conveyor band as an intermediate support member at a stacking station. These conventional arrangements are hampered by a number of drawbacks including, among others, an inferior resistance of the material used in their intermediate support member to pointed/edged mechanical stress, which tends to cause tearing and cutting of the support means surface. Moreover, the conveyor material has in certain situation been able to mar the sheet material being stacked.
SUMMARY AND OBJECTS OF THE INVENTION
It is an object of the present invention to provide an apparatus capable of overcoming the disadvantages of the above-described prior-art embodiments.
The embodiment of the invention is characterized by what is stated in the appended claims.
An apparatus according to the invention offers a number of significant benefits. The structure of the intermediate support member used in the apparatus provides an extremely durable construction. The multilayer structure of the intermediate support member has a very good wear resistance. It is also resistant against cutting. Its soft outer layers are incapable of marring the sheets being stacked. Furthermore, its the felt-like surface texture complies to the small surface irregularities of the stacked sheets. Moreover, the apparatus is capable of making extremely neat stacks. The stack edges become straight as the intermediate support member can push the transferred stacks of sheets very reliably against a back gage.
REFERENCES:
patent: 2958527 (1960-11-01), Seel
patent: 3894638 (1975-07-01), Hovekamp
patent: 3902711 (1975-09-01), Lenoir et al.
patent: 4162649 (1979-07-01), Thornton
patent: 4902195 (1990-02-01), Lucas
patent: 4927321 (1990-05-01), Lucas
patent: 5375695 (1994-12-01), Daringer et al.
patent: 5413324 (1995-05-01), Flade
patent: 5478638 (1995-12-01), Springer et al.
patent: 5672045 (1997-09-01), Schmid et al.
patent: 34-34115 (1986-04-01), None
patent: 0470362 (1992-02-01), None
patent: 0048148 (1980-04-01), None
patent: 405097317 (1993-04-01), None
Skaggs H. Grant
Valmet Panelhandling OY
LandOfFree
Apparatus for stacking sheets does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for stacking sheets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for stacking sheets will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2900828