H. Alfred Eberhardt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A discharge valve for controlling the discharge flow of water from the delivery end of a fire pump including a valve body having an integral extension portion forming an inlet waterway for delivering water from the delivery end of the fire pump to the valve chamber of the discharge valve, a valve cover having an integral discharge portion for directing the water to the fire hose in a downward direction, and a push-pull drain valve formed integrally with and contained within the valve cover.
Abstract: Apparatus is provided for admixing a relatively small quantity of one fluid with a larger quantity of another fluid in a proportion which remains relatively constant over a wide range of demand flow rates for the mixed fluids. The apparatus comprises a body having an inlet cavity and an outlet chamber in fluid communication therewith through an annular port. A disc-like valving member is mounted for displacement vertically in the chamber into elevations which depend on the rate at which a primary fluid flows through the annular port. A reservoir for a secondary fluid has an upwardly-open orifice and is located interiorly of the annular port. The valving member has a central tapered plug which depends into the reservoir-orifice, and the valving member is weighted so as to be biased downwardly by a constant pressure into a normally-closed position blocking fluid flow through the annular port.
Abstract: An in-line ball valve having a locking device which permits the positioning of the valve member to a set position by operation of a valve handle with the valve member being locked in this position against any creeping movement by reason of flow-induced forces acting on the valve member. The valve also includes a handle design which permits the handle to be positioned on the shaft of the valve member in eight different handle configurations to provide for simplicity of installation and ease of adaptability to push-pull controls.
April 29, 1976
Date of Patent:
May 24, 1977
Hale Fire Pump Company
H. Alfred Eberhardt, Kenneth F. Hoffman, Raymond R. Petersen
Abstract: Centrifugal pump including: (a) impeller drive with parallel low speed input and high speed output shafts having integral drive and pinion gears: (b) a combination housing-pumphead configured to maintain concentricity in critical areas and adapt the pump for either a gas engine or an electric motor drive; and (c) a clearance ring assembly which will allow clearance ring and impeller to shift radially to natural positions.