Parker-hannifin Corporation

Brook Cutshaw

Jason Scot Richardson

Richard C Hynes

Michael Tholan Crosby

Roger Paul Gray

Dean L Mish

Somer Renee Malone

Jason Lee Emmette

Mark D Schuster

Billie Frances Burleigh

Jim McBurnett

Jamie Coates

Kristy Konrardy

Wayne R Sinks

A hydraulic apparatus is provided with a return to neutral mechanism for returning a trunnion control bracket arm to a neutral position. The return to neutral mechanism comprises a pair of springs, one spring connecting a fixed bracket to a first rotatable bracket and the other spring connecting the fixed bracket to a second rotatable bracket. The mechanism uses springs with different spring constants and the springs are attached to the brackets in a single plane.

Hydraulic apparatus return to neutral mechanism

Hydraulic powered assembliesandare disclosed. The assemblyincludes a support unit, a hydraulic motor, and a driven memberthat is integral with the hydraulic motor. The hydraulic motorincludes a power groupthat includes six gerotor power units-. Each gerotor power unit-includes an inner rotorthat is fixed to a stationary through-shaftand an outer rotorthat is mounted for hypocycloidal movement relative to the inner rotor. The driven memberincludes segmentsthat support the outer rotorswithin the segments. The segmentscarry a winch cable receiving memberwhen the assemblyis used as a winch. The hydraulic powered assemblyis an alternative embodiment that includes two power groupsand. The power groupsandmay be symmetrical or asymmetrical.

Integrated hydraulic motor and winch

A return to neutral mechanism to bias the trunnion of a hydraulic apparatus into the neutral position is provided. The trunnion is rotationally coupled to a bracket which is coupled to a glide member that is positioned between, and biased to a predetermined position by, a pair of compression springs.

Growing community of inventors

Greeneville, TN, United States of America

Brook Cutshaw