Classifying – separating – and assorting solids – Sifting – Elements
Patent
1997-04-24
1999-08-31
Bollinger, David H.
Classifying, separating, and assorting solids
Sifting
Elements
209401, B07B 149
Patent
active
059441976
ABSTRACT:
A woven wire screen cloth having a plurality of parallel warp filaments intersected by a plurality of parallel shute filaments configured to enhance both conductance and screen life. A greater number of warp filaments are provided than shute filaments per given area. A plurality of rectangular openings are formed from the warp and shute filaments with each rectangular opening having a length and width. The length to width ratio of the rectangular openings is between approximately 2.7 to 2.8. The length of the rectangular openings to the diameter of the shute filaments is a ratio of between approximately 5.5 to 5.7. The screen cloth is calendared to assist in locking the intersections of the warp and shute filaments in place.
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American Petroleum Institute, API Recommended Practice, BE (RPI3E), Third Edition, May 1, 1993.
Baltzer Terry L.
Norman Robert E.
Bollinger David H.
Southwestern Wire Cloth, Inc.
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