Joseph W. Schaffer, SR.;Neal J. Stoffel;Andrew J. Theisen;Keith A. Johnson
发明人:
Andrew J. Theisen,Keith A. Johnson,Neal J. Stoffel,Joseph W. Schaffer, SR.
申请号：
US16413876
公开号：
US20190387681A1
申请日:
2019.05.16
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A concave section for a harvester is provided. The concave section includes a concave body having an upstream side, a downstream side, a leading end and a trailing end. The concave body defines an arcuate crop engagement face facing radially inwardly. A plurality of crop passage openings are defined through the arcuate crop engagement face. A cover is configured to at least partially cover at least some of the crop passage openings. The cover is carried by the concave body and is movable thereon between at least two different positions to adjust a degree of openness of at least some of the crop passage openings.
