EP 0332031 A3 19910731 - ZIGZAG SIFTER
Title (en)
ZIGZAG SIFTER
Publication
Application
Priority
DE 3808116 A 19880311
Abstract (en)
[origin: EP0332031A2] The invention has a sifting space provided with air feed lines (4, 9) and divided up into zigzag-shaped channels (5) connected in parallel in terms of fluid technics and whose length 1 is greater than their width b. In this way, a sifting packet with a large number of small channel cross-sections is formed. This design principle permits substantially smaller constructional heights with an identical number of kink-points. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
B07B 4/04 (2013.01 - EP US)
Citation (search report)
- [X] CH 419810 A 19660831 - ALPINE AG [DE]
- [XD] EP 0163836 A1 19851211 - BAYER AG [DE]
- [XD] US 3437202 A 19690408 - KAISER FRITZ W
- [X] FR 2602699 A1 19880219 - URALSKY POLITEKHN INST [SU]
- [A] DE 1135841 B 19620906 - THEODOR EDER DR
- [A] US 3929628 A 19751230 - DENEVI PIETRO G, et al
- [AD] US 1861248 A 19320531 - STEBBINS ALBERT H
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0332031 A2 19890913; EP 0332031 A3 19910731; EP 0332031 B1 19940126; DE 3808116 A1 19890921; DE 58906793 D1 19940310; JP 2753848 B2 19980520; JP H01274880 A 19891102; US 4931174 A 19900605
DOCDB simple family (application)
EP 89103544 A 19890301; DE 3808116 A 19880311; DE 58906793 T 19890301; JP 5657189 A 19890310; US 31636889 A 19890227