Control device for hydrostatic apparatus
AssigneeHydro-Gear Limited Partnership
InventorsRaymond M. Hauser, Thomas J. Langenfeld, William H. Ward
Life of this patent
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Abstract
A control device for hydrostatic apparatus is disclosed. One embodiment in the control device is optimized for use with a hydrostatic transmission having a casing. The control arm is movably mounted to the casing and frictional structure engages the control arm to resist rotational movement of the control arm. A spring may be used to bias a wedge into frictional relation with the control arm to resist rotation of the control arm. The wedge may also be secured with removable attachments.
Claims16
A control device for a hydrostatic transmission having a casing, the device comprising:
- a control arm movably mounted in the casing;
- a stud mounted in the casing extending past the control arm;
- and
- frictional structure guidingly engaging the stud and frictionally engaging the control arm, wherein the frictional structure includes a wedge, whereby movement of the control arm is frictionally resisted.
A motion control device for a vehicle having a transmission including a casing and a swashplate operably mounted in the casing to control vehicle motion, the control device comprising:
- a control arm operable connected to the swash plate to move in a plane perpendicular to an axis about which the swashplate rotates;
- frictional structure including a wedge engaging the control arm to frictionally resist movement of the control arm;
- and
- a spring connected to and biasing the wedge toward increased friction.
A hydrostatic apparatus comprising:
- a hydrostatic element having a casing and hydraulic fluid therein;
- a control arm operably connected to the casing to control the hydraulic fluid;
- and
- frictional structure comprising a wedge frictionally engaging the control arm.
Dependencies are inferred from the claim text.