Parker-Hannifin Corporation

Other

Bruce E Shane

Albert F Cella

Donald J Gembolis

Anita L Reynolds

Wayne L Conner

Keith D Leady

A filter media that inhibits the formation of static charge in a liquid flowing through the filter media comprises a filtration layer having a first surface and a second surface opposite the first surface and comprising a non-conductive fibrous material having a plurality of fibers, the fibrous material comprising a metal layer deposited on at least a portion of the fibers through at least a portion of the thickness of the filtration layer. The filter media or a filter apparatus incorporating the filter media does not require means for dissipating static charge from the fluid and, therefore, does not require grounding.

Surface modified filtration media

A filter element includes a ring of filtration media circumscribing a central axis, and first and second end caps. The first end cap includes i) an annular body portion defining a central opening around the central axis, sealingly bonded to the first end of the media ring, ii) an annular sealing ring having an annular, peripheral resilient sealing portion; and iii) axial support stanchions around the periphery of the body portion. The stanchions support the sealing ring at a location spaced apart from the body portion, and define radial flow openings between adjacent stanchions. One or more non-radial flow members extend from each stanchion along the outer surface of the annular body portion to direct flow in a spiral or helical manner, where the flow then passes through the flow openings and downwardly along the outer surface of the media in a swirling manner.

Filter element with flow directing end cap

Filter element

A fluid filter includes a cylindrical pleated filter media disposed around a central perforated support core or self-supporting. An outer support sleeve comprising a extruded nylon, diamond-shaped mesh is stretched across the pleated media, and elastically conforms to the pleat peaks to structurally retain the pleats of the pleat peaks in fixed relation to one another. A bead of adhesive is then applied over the sleeve to fix the sleeve to the pleat peaks. End caps are disposed at opposite ends of the fluid filter.

Filter cartridge with structurally and adhesively attached outer sleeve and method of assembly

A fluid filter includes a cylindrical pleated filter media disposed around a central perforated support core or self-supporting. An outer support sleeve comprising a extruded nylon, diamond-shaped mesh is stretched across the pleated media, and elastically conforms to the pleat peaks to structurally retain the pleats of the pleat peaks in fixed relation to one another without mechanical or chemical connection to the pleats. Preferably, the support layer has a strand angle between 60 and 90 degrees, and a strand density sufficient to mark the element with appropriate identification indicia. End caps are disposed at opposite ends of the fluid filter. The cylindrical filter media is radially compressed through a conical tool into the outer sleeve. An inner support core or mandrel with a second conical tool is then forced into the cylindrical filter media to enlarge the media such that the outer sleeve elastically stretches and conforms to the pleat peaks.

Filter cartridge with structurally attached outer sleeve and method of

A coreless filter element for a filter housing includes cylindrical filter media having longitudinally-extending pleats extending from one end cap on the filter media to another end cap on the filter media. The filter media is preferably a multi-layered structure with an outer support mesh layer attached to an inner prefiltration layer by an intermediate adhesive web layer. An inner wrap of a porous fibrous filter media is provided within the central cylindrical cavity of the pleated filter media. The wrap has a cylindrical form with an outer surface which is joined to the inner pleat peaks of the media such as with one or more beads of adhesive, or with a continuous adhesive layer applied to the outer surface of the support wrap. The filter element with inner support wrap can be easily located over a metal support core integral with the filter housing, and provides structural integrity for the pleats of the filter media. According to another embodiment, a series of circumferential bands formed from porous or imperforate material can be provided within the central cylindrical cavity and adhesively joined to the inner pleat peaks of the filter media. In either embodiment, the inner support wrap or bands provide structural integrity for the pleats, provides a filter element which is easily manufactured, and which allows the filter element to be easily located over the support core in the filter housing, and removed therefrom when the filter element becomes spent. The coreless filter element is also preferably formed from components which can be easily incinerated or disposed of in a landfill.

Coreless non-metallic filter element

A filter apparatus (10) which dissipates static charge from fluid flowing through the apparatus has a filter housing (12) enclosing a filter element (14). The filter element includes a tubular filter media assembly (15) which incorporates a conductive structure to draw off static charge in fluid passing through the media. The tubular filter media assembly comprises an outer steel mesh support layer (24); a first intermediate layer (25) of a filtration media; a second intermediate layer (26) of a carbon material, e.g., stainless steel, nickel or carbon fiber mesh, mat or matrix; and an inner steel mesh support layer (27). The filter media assembly is pleated and disposed around a central perforated conductive tube (16). The filter media is electrically connected at one or both ends through conductive adhesive or epoxy to at least one conductive end cap (20, 22). The conductive end cap has a central opening (33, 34), and receives a portion of the grounded filter housing (50, 52), for example, an inlet tube. A conductive elastomeric O-ring seal (48, 49) is disposed between the conductive end cap and the respective portion of the filter housing extending through the end cap opening. The O-ring seal electrically connects (grounds) the conductive end cap(s) to the respective housing portion to provide a flexible ground path for carrying away static charge in the fluid passing thorough the cartridge.

Static dissipating filter cartridge with conductive resilient seal

A cartridge style, pop up, differential pressure indicator includes a threaded body member, a cover structure and a cylindrical indicator button, which carries a magnet at its lower end, and is slidably supported in the cover for movement between a depressed, hidden position and an extended indicating position. The button is engaged at one side by a leaf spring which in the depressed position urges a lip on the button under a ledge in the cover to serve as a detent. A piston slidably supported in the body is subject to differential fluid pressures and carries a magnet at its upper end, poled in a manner to repel the magnet in the indicator button to urge the latter against the bias of the detent spring and upwardly to the extended, indicating position. A semicircular bimetal strip supported in the cover engages the detent spring at lower temperatures to prevent false release of the indicator button due to cold weather, high fluid viscosity situations.

Differential pressure indicator

The invention relates generally to stereo photography and particularly to a simple method and apparatus which enables an unskilled individual to produce three-dimensional stereoscopic pictures through the use of inexpensive, readily available cameras and viewing devices. In the practice of the invention, two cameras are mounted in an adjacent vertical orientation in a novel housing or holder, interaxial spacing between the cameras being either fixed or adjustable within defined limits to produce slide transparencies croppable according to the invention and mountable on available reel mounts for viewing with standard viewing devices.

Growing community of inventors

Delta, OH, United States of America

Bruce E Shane