Wicket dam lifting module
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsRalph B. Snowberger, Rick W. Schultz
Life of this patent
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Abstract
In one embodiment, the invention is directed to a hydraulic lifting module hich is removable as a unit from a wicket dam. A hydraulic cylinder is pivotably mounted about an axis in the frame and extends outwardly of an apertured cover between extreme positions. A slidable shield is secured and is pivotable with a portion of the cylinder extending out of the cover for closing the aperture and the extreme positions of the cylinder. A flexible boot interior of the frame renders the housing water and silt resistant.
Claims18
A removable hydraulic lifting module for a wicket or gate pivotable about a wicket axis in a dam, said module being removably mounted in a support at an open top of a lift cylinder chamber in the sill of the dam comprising:
- an enclosed frame having an open bottom portion and being positionable in the open top of the support;
- an apertured cover secured to the frame about an upper margin enclosing the frame;
- a hydraulic lift cylinder pivotably mounted about an axis in the frame and extending outwardly of the apertured cover in the open bottom and pivotable between extreme positions;
- a slidable shield secured to and pivotable with the lift cylinder extending out of the cover for closing the aperture and the cover between the extreme positions of the lift cylinder;
- means coupled to the frame for facilitating removal of the frame and cylinder from the support.
Dependencies are inferred from the claim text.