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A fluid filter for spin-on mounting to a base includes an outer shell defining a hollow interior and a nutplate secured to the outer shell by forming an upper edge portion of the outer shell onto the nutplate. A filtering element is positioned within the hollow interior and the base provides fluid-i

A fluid filter for spin-on mounting to a base includes an outer shell defining a hollow interior and a nutplate secured to the outer shell by forming an upper edge portion of the outer shell onto the nutplate. A filtering element is positioned within the hollow interior and the base provides fluid-in and fluid-out passageways for the fluid filter. To provide a face seal against the base and concurrently a radial seal against the formed edge, a retainer and gasket assembly is used. The retainer has a base portion which rests on the nutplate and an inclined portion which extends upwardly and inwardly. An elastomeric gasket with a unique cross sectional shape has a flat portion which rests on the inclined portion. With axial compression of the gasket by the base, the gasket compresses against the retainer and expands radially into sealing contact with the formed edge.

대표청구항 ▼

A fluid filter for spin-on mounting to a base includes an outer shell defining a hollow interior and a nutplate secured to the outer shell by forming an upper edge portion of the outer shell onto the nutplate. A filtering element is positioned within the hollow interior and the base provides fluid-i

A fluid filter for spin-on mounting to a base includes an outer shell defining a hollow interior and a nutplate secured to the outer shell by forming an upper edge portion of the outer shell onto the nutplate. A filtering element is positioned within the hollow interior and the base provides fluid-in and fluid-out passageways for the fluid filter. To provide a face seal against the base and concurrently a radial seal against the formed edge, a retainer and gasket assembly is used. The retainer has a base portion which rests on the nutplate and an inclined portion which extends upwardly and inwardly. An elastomeric gasket with a unique cross sectional shape has a flat portion which rests on the inclined portion. With axial compression of the gasket by the base, the gasket compresses against the retainer and expands radially into sealing contact with the formed edge. leeve is in the lower position, the first lateral passageway is aligned with the lateral port and communication is established between the longitudinal bore of the housing above the second sleeve and the exterior of the housing through the lateral port, and communication is established between the longitudinal bore of the housing below the second sleeve and the first flow passage; and wherein when the first sleeve is in the lower position, the second lateral passageway is aligned with the second flow passage and communication is established between the longitudinal bore of the housing above the sleeves and the longitudinal bore of the housing below the sleeves through the second flow passage, and communication between the longitudinal bore of the housing and the exterior of the housing through the lateral port is prevented by the first sleeve, and communication through the first flow passage is prevented by the first sleeve. 28. The apparatus of claim 27, wherein the apparatus is located above and connected to a gravel pack screen element having a longitudinal bore therethrough and the apparatus is located below and connected to a packer element having a longitudinal bore therethrough and the packer element is connected to a tubing string having a longitudinal bore therethrough, and the packer element is inserted inside a wellbore, and wherein an annular space is formed between the tubing and the wellbore. 29. The apparatus of claim 28, wherein when the first sleeve is in the upper position, and the second sleeve is in the lower position, the first lateral passageway is aligned with the