Purolator Filters Na LLC

Mann+hummel Purolator Filters LLC

Rajan Ahuja

L Steven Cline

Travis Canup

An anti-drainback valve contains a locking mechanism for securing the valve into to a filter assembly. The locking mechanism is made up of at least two keys that extend from the valve into beyond a cap of the filter assembly in order to secure the valve within the filter assembly. When multiple keys are employed, such keys may be equally spaced around the circumference of the cap. Manufacturing costs are kept minimal as minimal material is required and a two part mold may be employed during manufacturing.

Anti-drainback valve with position positive locking for spin-on oil and fuel filters

A fluid filter is described, comprising a filter body defining a cavity for a filter element, a first end cap for fitting on one end of the filter body, having an integrated single piece anti drain back valve and seal, and a second end cap for fitting on an opposite end of the filter body, having an integrated two part relief valve and supports for the filter element, formed by a relief valve body and a relief valve disc.

Two part resilient combination bottom support and relief valve end seal assembly for fluid filters

A fluid filter is described, having a filter body defining a cavity for a filter element, a first end cap for fitting on one end of the filter body, having an integrated single piece anti drain back valve and seal, and a second end cap for fitting on an opposite end of the filter body, having an integrated combination relief valve element that includes supports for the filter element.

Single piece resilient combination bottom support and relief valve end seal element for fluid filters

A fluid filter and an end cap of the fluid filter are described. The filter may be a spin on oil filter, which includes a combination dual valve element defining an integral anti-drain back valve and an integral relief valve, a retainer assembly for maintaining the combination dual valve element in position in the end cap, relative to the filter. The combination dual valve element includes an ADB sealing lip forming an anti-drain back valve portion, and an RV sealing lip forming a relief valve portion.

One piece combination anti-drain back and relief valve

The present invention is directed to a no-leak drain pipe connector for a fluid filter which helps prevent the splashing of hot fluid on individuals performing filter element and oil changes.

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Fayetteville, NC, United States of America

Rajan Ahuja