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:
Jul. 04, 1989
Filed:
Apr. 01, 1987
Applicant:
Inventor:
Robert Zimmerman, Almira, WA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01B / ;
U.S. Cl.
CPC ...
172538 ; 172172 ; 172177 ; 111195 ;
Abstract
A press wheel improvement for seed drills in which one or more open recesses are presented through the circular rim of the press wheel to form transverse dams along packed furrow walls. The recesses are bounded by walls that present a projecting tab extended beyond the conical wheel surfaces. A complementary insert can be fastened to each tab when damming of the furrows is not desired or required by field conditions. The tabs cooperate with straw walkers to assist in clearing trash and preventing obstruction of the straw walkers by rocks wedged between them and the conical press wheel walls.