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:
Apr. 18, 1995
Filed:
Dec. 07, 1992
Applicant:
Inventors:
Allen C Thompson, Castro Valley, CA (US);
Max H Parks, Glenside, PA (US);
Assignee:
FMC Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A01C / ;
U.S. Cl.
CPC ...
239156 ; 220565 ; 220 2386 ; 111118 ;
Abstract
A liquid distributor having a pair of variable displacement pumps driven by a single electric motor, the rotation speed of which is determined by a voltage from a controller in response to a predetermined ground speed and application rate which mixes a chemical with water in a desired proportion and delivers a solution to be directed into an open furrow just prior to the furrow being covered with dirt.