James P Huebert

US Patent:

44085184, Oct 11, 1983

Filed:

Mar 17, 1981

Appl. No.:

6/244831

Inventors:

Robert McK. Diel - Hutchinson KS
James P. Huebert - Halstead KS

Assignee:

The Cessna Aircraft Company - Wichita KS

International Classification:

F15B 1306

US Classification:

91 31

Abstract:

A self-leveling series type hydraulic system including boom and bucket valves which separately control boom and bucket cylinders and a flow divider valve positioned in the exhaust flow path from the rod end of the boom cylinder. The flow divider valve splits the flow sending a portion of it to the cap end of the bucket cylinder so as to maintain the bucket in a level condition during raising of the boom with the remaining flow connected to one of the boom valve motor ports whereby the bucket valve can be separately actuated concurrent with the boom valve and supplied with oil so as to override the self-leveling function if desired.