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. 17, 1979
Filed:
Mar. 16, 1978
Applicant:
Inventors:
Alfred J Bailey, Berkswell, GB;
Ronald S Sargent, Kenilworth, GB;
Assignee:
Massey-Ferguson Services N.V., Curacao, AN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01C / ; A01B / ; A01B / ; A01B / ;
U.S. Cl.
CPC ...
111 66 ; 111 85 ; 111 87 ; 172316 ; 172462 ; 172464 ; 172474 ; 172497 ; 172570 ; 172573 ; 172657 ; 172705 ; 172763 ;
Abstract
Seed drill has a row of coulters which are raised and lowered by a beam positioned above the coulters and connected to the coulters by spring assemblies. The beam is journalled for pivotal movement about its longitudinal axis and the spring assemblies are connected to the beam so that some exert reaction forces on the beam having clockwise moments about the beam's pivot axis, and others anticlockwise moments, whereby changes in loading of the coulters can be distributed between the coulters by angular movement of the beam about its pivot axis.