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. 07, 1995
Filed:
Sep. 30, 1994
William L Welscher, Ames, IA (US);
Sauer Inc., Ames, IA (US);
Abstract
A control assembly for hydrostatic transmission having a valve controlling the flow of fluid to the pump includes a pump body member having a cavity with a moveable valve element mounted in the body and connected to a fluid pressure source, and having a neutral position. Linkage including an upstanding pin interconnects the pump to the valve element. A cover extends over the body and is secured thereto. A control shaft extends through the cover having an exterior end with a manual control lever mounted thereon, and an interior end to which a cam plate having an elongated cam slot therein is secured. A detent portion in the cam slot opposite to the upstanding pin defines a neutral position for the pin. A screw adjusts the valve element into a neutral position. A torsional spring in the cover yieldingly holds the control shaft, the control lever, the cam plate, the valve element, and the remainder of the linkage in a neutral position. The method of assembling the control assembly involves placing an elongated alignment tool on the upstanding pin and moving the tool into a prepositioned cam slot detent, placing the cover on said body and extending said tool through an aperture in the cover; securing the cover to the body, and removing the tool.