Cummins Filtration Ip, Inc.

Fleetguard, Inc.

Jeffrey B Sharp

Ismail C Bagci

Kevin C South

Zemin Jiang

Wassem Abdalla

Hendrik Amirkhanian

Peter K Herman

Abby True-Dahl

Jeff Husband

Barry Mark Verdegan

David Paul Genter

Michael J Connor

Gerard Malgorn

Jeffrey A Husband

Kelly R Schmitz

Norman C Blizard

Terry Shults

Aaron M Wells

Melvin Douglas McCormick

Chad T Brummitt

Dean Olson

Donna Butler

Charles W Hawkins

Mark J Johnson

Paul D Miller

Ricky England

Thomas H Steger, Jr

A 'no filter, no run' filtration system that is designed to verify that a filter cartridge is present to safe-guard against damage to fuel injectors, associated fuel components, etc. and engine malfunctions. Fuel flow to the engine is prevented altogether or permitted in an amount insufficient to allow engine operation if a filter cartridge is not installed, and an appropriately designed filter cartridge is required to be used in order to permit sufficient fuel flow for engine operation. In one embodiment, a flow restriction valve is provided that includes a ball.

Standpipe with flow restriction valve, and filter cartridge

Flow restriction valve and filter cartridge

A method and means are described for rapidly evacuating trapped air from the top of a top-loaded liquid filter housing. An air vent means is provided that prevents complete sealing between a bypass valve and a sealing surface on an endcap of a replaceable filter element. The air vent means enables the rapid evacuation of trapped air in the top of the housing chamber, but permits only a negligible flow rate of liquid, for example oil, through the air vent means once air is evacuated due to high viscosity ratio of liquid, such as oil, versus air.

Filter element with air vent

A filter within a filter cartridge design is described that includes a sealing structure on an endplate of an outer filter element. Generally, the sealing structure includes an annular flange on the endplate that can directly seal against an interior surface of a housing when the filter cartridge is assembled for use. During filtration, the annular flange prevents a working fluid from bypassing the outer filter element. The sealing flange can seal with the housing in a press fit engagement.

Filter cartridge having a filter within a filter, and an endplate sealing structure on an outer filter element

One embodiment is a unique replaceable filter element. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.

Replaceable fuel filter element and fuel filter assembly

A priming pump for fluid delivery arranged with a base defining a flow inlet, a flow outlet, and a control valve positioned therebetween. The priming pump includes a housing assembled to the base with an inlet flow valve positioned in an inlet valve compartment and an outlet flow valve positioned in an outlet valve compartment. The valve compartments are in communication with a plunger chamber including an axially movable plunger. A spring-biased control knob is assembled to the plunger and to the control valve for controlling its position between either a direct-flow orientation or a by-pass orientation. With the control valve in the by-pass orientation, upward movement of the control knob draws fluid into the inlet valve compartment and into the plunger chamber. The down stroke of the control knob pushes the fluid out of the plunger chamber.

Auto valve priming pump

A unitary centertube, molded out of a synthetic material and designed for use as part of a fluid filter, includes a tubular body portion arranged with a plurality of annular ribs in alternating sequence with a plurality of annular recessed sections, the tubular body portion defining a plurality of fluid flow apertures and an interior opening. The plurality of fluid flow apertures are arranged in two styles to facilitate the mold design. Included as part of the unitary centertube is a cross-beam section positioned in the interior opening for providing reinforcement to a corresponding filtering element when subjected to a differential pressure.

Unitary centertube for a fluid filter

Growing community of inventors

Cookeville, TN, United States of America

Jeffrey B Sharp