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:
Sep. 15, 1981
Filed:
May. 08, 1979
Applicant:
Inventor:
Giuseppe Roncarolo, Modena, IT;
Assignee:
Fiat Trattori S.p.A., Modena, IT;
Primary Examiner:
Int. Cl.
CPC ...
A01B / ;
U.S. Cl.
CPC ...
172-7 ;
Abstract
A device for controlling an agricultural implement mounted on a tractor includes an auxiliary hydraulic jack which exerts a force on a resiliently flexible bar sufficient to limit the deformation of the bar due to reaction forces, when the implement is in use in a ground-engaging position, thereby acting, through a transmission linkage, on a movable control member of an hydaulic distributor to urge the member into its rest position and return the implement rapidly to its lowered position to achieve an even working of the ground. An adjustable throttle valve meters the operation of the auxiliary jack to maintain a desired working characteristic.