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:
Nov. 14, 2000
Filed:
Mar. 17, 1999
Jacob Gust, Fargo, ND (US);
Bradley J Meyer, Fargo, ND (US);
Case Corporation, Racine, WI (US);
Abstract
An agricultural material metering system includes a metering member, a hydraulically driven actuator, a pump, a rotatable ground driven member, a variable drive control and an actuator coupled to the variable drive control. The metering member is configured to meter agricultural material upon being driven. The hydraulically driven actuator is coupled to the metering member to drive the metering member. The variable drive control is coupled between an inlet of the pump and the metering member and is configured for actuation between a first position in which the hydraulically driven actuator drives the metering member at a first rate and a second position in which the hydraulically driven actuator drives the metering member at a second rate. The rotatable ground driven member is coupled to the pump and drives the pump when rotating. The pump is coupled to the hydraulically driven actuator and displaces fluid upon being driven to drive the hydraulically driven actuator. The actuator coupled to the variable drive control is configured to actuate the variable drive control between the first and second positions to vary the rate in which materials metered by the metering member. One exemplary embodiment, the variable drive control is incorporated into the pump, wherein the pump comprises a variable displacement pump. In another embodiment, the variable drive control is incorporated into the hydraulically driven actuator such that hydraulically driven actuator comprises a variable displacement hydraulic motor.