The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 1990
Filed:
May. 30, 1989
Harry H Takata, Edina, MN (US);
Ag-Chem Equipment Co., Inc., Minneapolis, MN (US);
Abstract
An improved system for pneumatic spreader systems for selective distribution of particulate material onto agricultural fields from selected ones of a plurality of elongated delivery tubes or booms. The improved feature of the present invention comprises a means to interrupt flow of particulate material from certain preselected booms without clogging the system. The system includes a means for substantially completely blocking the flow cross-sectional area from a preselected one or plurality of delivery tubes, along with a line which normally functions as a feed line when the system is in normal operation, but as a recycling line when the delivery tube is in blocked or shut-off disposition. The arrangement provides a means for converting a twin-boom arrangement to a single-boom arrangement for accommodating unusual operation such as less-than-a-full boom width when undertaking the final run of a field application.