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. 25, 1978
Filed:
Jan. 24, 1977
Applicant:
Inventor:
Henry K Orthman, Lexington, NE (US);
Assignee:
Orthman Manufacturing, Inc., Lexington, NE (US);
Primary Examiner:
Int. Cl.
CPC ...
A01B / ; A01B / ;
U.S. Cl.
CPC ...
172540 ; 172177 ; 172184 ; 172548 ;
Abstract
Water-holding and retaining cavities are formed in furrows with the cavities being staggered between adjacent rows. An arm spring biased downwardly carries a hub having spikes in planes laterally spaced apart with the spikes around the hub being staggered between the planes. Each spike is concave longitudinally and in transverse cross section and is secured to opposite sides of a disc mounting plate by a pair of clamping elements one of which is integrally connected to the mounting plate.