EP 0290200 A3 19890621 - SELF-CLEANING ROTARY SCREEN FOR FILTERING AIR
Title (en)
SELF-CLEANING ROTARY SCREEN FOR FILTERING AIR
Publication
Application
Priority
US 4391587 A 19870429
Abstract (en)
[origin: EP0290200A2] A self cleaning rotary screen of a combine harvester is provided with a planar circular screen (54) that is secured to an outwardly extending circular flange having an external groove and an internal groove. The screen is rotatably mounted on a hinged door (30) by a plurality of freely rotatable wheels (44-48) which are spaced around an aperture (40) in a door plate (38) and engage in the internal groove of the flange. Also secured to the door are two freely rotatable idler sheaves (66, 68) located adjacent to the hinge axis (P) of the door so that the endless drive belt which runs in the external groove passes from the two idler sheaves to a positionally fixed drive sheave (70) in tangential directions approximately aligned with the hinge axis (P). The drive sheave is driven by the propulsion system of the harvester and its rotational axis intersects the hinge axis (P). The door (30) can thus be opened without uncoupling the belt (64).
IPC 1-7
IPC 8 full level
F01P 11/12 (2006.01)
CPC (source: EP)
F01P 11/12 (2013.01)
Citation (search report)
- [AD] US 4233040 A 19801111 - VOGELAAR BERNARD F, et al
- [A] DE 2542568 A1 19770407 - LTG LUFTTECHNISCHE GMBH
- [A] DE 1407943 A1 19691002 - DREHER ELMER
- [A] WO 8501311 A1 19850328 - MASSEY FERGUSON SERVICES NV [NL]
- [A] DE 2556687 A1 19760708 - MASSEY FERGUSON SERVICES NV
Designated contracting state (EPC)
BE DE FR IT
DOCDB simple family (publication)
EP 0290200 A2 19881109; EP 0290200 A3 19890621; EP 0290200 B1 19910911; CA 1318607 C 19930601; DE 3864733 D1 19911017
DOCDB simple family (application)
EP 88303843 A 19880428; CA 564168 A 19880414; DE 3864733 T 19880428