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:
May. 28, 1991
Filed:
Mar. 30, 1990
Norman A Bauer, Watertown, MN (US);
Ag-Chem Equipment Co., Inc., Minnetonka, MN (US);
Abstract
An improved drive system for pneumatic spreader systems for effective distribution of particulate material onto agricultural fields from a plurality of elongated delivery tubes or booms. The improved drive means of the present invention is utilized to power the lift-auger bringing particulate material from the hopper to the distributor head, and is provided with dual operating parameters or modes, the first mode being low-speed high-torque, the second mode being high-speed low-torque. The low-speed high-torque mode is designed to provide power to initially 'break-loose' or otherwise activate the rotation of the auger, with the high-rotational speed being utilized for normal operation. The system is designed to automatically convert from the low-speed mode to the high-speed mode after only a short interval of time, such as may be required to complete from between 1 and 3 revolutions of the lift-auger.