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:
Aug. 14, 1984
Filed:
Nov. 27, 1981
C. Van der Lely N.V., Maasland, NL;
Abstract
A tractor is provided with a wheel slippage control to regulate the load produced by an implement. Wheel slippage is measured by pulses received from tachometers measuring the rotation of a non-driven wheel and a driven wheel. These pulses are applied to associated counters, where the total number of pulses received from each wheel is continuously counted. If the difference between the counts of the counters reaches a preset amount, a signal is applied to the control valve of a lifting device attached to the tractor, so that an implement carried by the device penetrates less deeply into the soil. After the lifting device has been energized, the counters are reset to zero to continue counting until reset again.