Spin-on filter assembly and methods

Abstract

A spin-on filter cartridge includes a housing, a filter element operably oriented in the housing, a baffle plate, and a seal arrangement. The baffle plate is operably oriented over the housing open end. The baffle plate defines a central flow aperture. The baffle plate defines a continuous groove immediately adjacent to and circumscribing the central flow aperture. The seal arrangement is secured to the baffle plate spaced from and circumscribing the continuous groove. In another aspect, a filter assembly includes a spin-on filter cartridge as characterized above and a filter head. The spin-on filter cartridge is removably mountable on the filter head. The filter head includes a central spud defining outer threads. An O-ring seal member or a gasket seal member is operably oriented around the central spud. When the spin-on filter cartridge is operably oriented on the filter head, the seal member is received within the continuous groove and the seal arrangement forms a seal between and against the baffle plate and the filter head. The seal can be radial or axial or have both axial and radial components. In another aspect, a method of assembling a filter assembly includes spinning a filter cartridge as characterized above onto a filter head to form a primary seal between the baffle plate on the filter cartridge and the filter head, and until a seal member fixed to the filter head is received within the continuous groove. In another aspect, a filter head is provided. The filter head includes a block defining fluid flow channels; a central spud having a threaded outer wall; and a seal member secured to and circumscribing the central spud.

Description

[0001] Pursuant to 35 U.S.C. § 119(e), this application claims U.S. Provisional Application Serial No. 60 / 748,941, filed December 8, 2005, and filed December 6, 2006 with unknown application serial number Priority of U.S. Invention Applications. The entire contents of application 60 / 748,941 and the unknown US patent application are hereby incorporated by reference. technical field [0002] This application relates to spin-on type fluid filters. Background technique [0003] A spin-on filter assembly consists of two parts - a filter head with a threaded boss, and a removable and replaceable filter element. Filter heads are usually permanently mounted to equipment such as engines, hydraulic systems or generators. The filter head has an inlet channel for delivering fluid to be filtered to the filter cartridge, and an outlet channel for delivering fluid that has been filtered by the filter cartridge for use by the device. Filter cartridges typically include an outer container...

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Problems solved by technology

This seepage can cause particulate material to travel to downstream equipment, potentially causing problems

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