Rotary expansible chamber devices – Shaft or trunnion lubrication or sealing by diverted working...
Patent
1990-11-29
1992-01-28
Bertsch, Richard A.
Rotary expansible chamber devices
Shaft or trunnion lubrication or sealing by diverted working...
418179, 418267, 403359, F04C 2344
Patent
active
050839098
ABSTRACT:
A vane type hydraulic energy translating device for pumping filtered seawater and which uses seawater as a lubricating fluid. The pump is a compact, light weight design in which the bearings and certain other critical components are fabricated from corrosion resistant, low friction, high strength materials. The vanes as well as flexible side plate members are formed of these corrosion resistant materials. The pump body is formed of high corrosion resistant stainless steel. The side plates are flexible and act as wear surfaces for the ends of the vanes as well as sealing surfaces about the rotor thereby preventing leakage of seawater from high to low pressure areas. Each vane is spring biased radially outward from the rotor axis with four springs disposed within apertures located in the vane base. The vanes are generally rectangular in shape and have an outer end portion which serves as a sliding seal against a cam ring track. The rotor of the pump is uniquely splined to the shaft such that axial forces along the shaft do not translate to the rotor. A unique under vane pressurization system facilitates the passage of pressurized seawater to the base of the vane to assist in urging the vane radially outward against the cam track ring.
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Navy Technical Disclosure Bulletin vol. 12, No. 2, Dec. 1986 pp. 27-32. "ervane Pressurization System For Hydraulically Balanced Vane Pumps and Motors".
Kunsemiller John P.
Young Robert R.
Bertsch Richard A.
Cavanaugh David L.
Kalmbaugh David S.
The United States of America as represented by the Secretary of
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