The Nupro Company

Other

Edward E Kish, Jr

Earl D Shufflebarger

Bernard J Gallagher

Donald J Murauskas

John R Boylan

Frank M Cunningham

Oliver L Danko

William P Tobbe

David M Simko

George D Diehl

A bellows valve construction which facilitates valve use at elevated temperatures and pressures. The valve includes a valve body having a passageway extending thereinto for defining a valve chamber with a valve seat disposed along this passageway and a fluid inlet and a fluid outlet communicating therewith on opposite sides of the seat. A bonnet is integrally associated with the valve body and includes a bonnet opening coaxial with the valve body passageway. A valve assembly is receivable as a unit in the bonnet opening with a portion thereof extending into the valve chamber for selectively controlling fluid flow between the fluid inlet and outlet. This valve assembly is removable from the valve body as a unit for repair or replacement purposes and includes an adapter nut threadedly receivable in the bonnet opening, a valve member, an elongated stem, and a hollow bellows passing through the bonnet opening in a surrounding relationship with at least a portion of the stem. One end of the bellow is affixed to the adapter nut with the other end being affixed adjacent the valve member such that fluid passing through the valve exerts a compressive force against the bellows. A first urging means is adapted to selectively move the valve stem and member into a valve opened condition and a second urging means is adapted to move the valve stem and member into a valve closed condition. The valve is adapted for either manual or remote operation.

Bellows valve

The specification and drawings disclose a fluid filter device which includes a central body section clamped between a pair of end fittings by a plurality of longitudinally extending tie bolts. The tie bolt arrangement is such that only one bolt must be removed to permit the central body section to be swung out of position between the end fittings for filter cleaning, changing, or the like. The central body section includes a cylindrical through passage which extends longitudinally of the body perpendicularly to end faces which mate with the end fittings. A filter cartridge is received in the through passage and includes a cylindrical sleeve which is sized so as to be closely and slidably received in the passage. Filter elements are mounted within the sleeve. Additionally, seal rings are carried about the opposite ends of the sleeve to provide a fluid seal between the end fittings and the central body, as well as to prevent leakage between the outside of the sleeve and the wall of the passageway.

Fluid filter

A fluid filter including a filter body having inlet and outlet passages communicating with an open ended chamber on opposite sides of a tapered seat area. A cupshaped fluid filter or strainer element is located in the chamber through the open end thereof and is adapted to be closely received in the seat area. A bonnet assembly covers the open end of the chamber, is threadedly mounted to the body and is comprised of a bonnet, a bonnet nut and biasing means. The biasing means is employed to exert a biasing force against the filter or strainer element to continuously urge it toward the seat area. At least the bonnet and bonnet nut are themselves interconnected in a manner that permits both rotational and limited axial movement therebetween. The disclosed structure facilitates access to the chamber and filter or strainer element without the necessity for removing the entire fluid filter structure from a service installation. The interconnection between at least the bonnet and bonnet nut permits the bonnet assembly to be removed from the filter body as a single unit and the tapered seat area is configured such that the filter or strainer element is thereby retained in the chamber when the bonnet assembly is removed from the body for subsequent separate removal therefrom by hand.

A fluid strainer element capable of withstanding high differential pressures when used and which facilitates straining of fluid flowing through the continuous side wall and one end wall of the element. The strainer is generally cup-shaped and includes an inner cup-shaped support structure having staggered perforations extending through the surfaces thereof. An outer cup-shaped strainer structure constructed of wire mesh is closely received over the support structure with the open ends of the two structures being substantially coextensive with each other. An annular binding ring is closely received over the structure open ends and is rigidly affixed thereto. The mesh size of the straining structure may be varied as is desired and/or necessary for any use and normal fluid flow through the strainer is from outside to inside the element.

Growing community of inventors

Kirtland, OH, United States of America

Edward E Kish, Jr