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. 04, 2001
Filed:
Jan. 21, 2000
Glenn Owen Scheer, Durango, IA (US);
Deere & Company, Moline, IL (US);
Abstract
An electrical control circuit for supplying an analog voltage signal to an electronic transmission controller for a hydrostatic transmission. The control circuit comprises two switches located on a T-bar handle of a control lever. The first switch is closed for reducing the speed of the vehicle and the second switch is closed for increasing the speed of the vehicle. The circuit is provided with a constant direct current voltage source. A first resistor is mounted in series with the voltage source. A second resistor in turn is mounted in series with the first resistor. The first switch is mounted in parallel with second resistor. A third resistor is mounted in series with the second resistor downstream from the first resistor. The third resistor is coupled to ground. The second switch is mounted in series with the second resistor downstream from the first resistor. A fourth resistor is mounted in series with the second switch. The second switch and fourth resistor are mounted in parallel to the third resistor. A voltage signal output is located between the second and third resistors and supplies an analog voltage signal to the electronic transmission controller.