Donaldson Comapny, Inc.

Randy J Logan

Daniel L Tuma

Andrew C Dahlgren

Vijay Kumar Garikipati

Son T Nguyen

David J Tuffley

Filters and filtering methods for placement in an electronic enclosure, such as a hard disk drive housing, are disclosed. In one embodiment the filter includes a housing having a top, a base, and at least one sidewall extending from the top to the base, the housing defining an inlet port and an outlet port through the sidewall, and a breather port in the base, the housing further defining an internal volume. Adsorbent filter media is disposed within the internal volume of the housing such that the housing defines a first path for flow of fluid through the breather port in the base to the filter media and a second path for flow of fluid through the inlet port, into contact with the filter media, and out the outlet port.

Filter constructions containing breather and recirculation filter elements

A filter assembly includes a shaped adsorbent article disposed in a housing. The shaped adsorbent article has one or more projections extending from a surface of the article toward the housing to provide for flow of fluid between the shaped adsorbent article and the housing. The filter assembly may optionally include a diffusion channel for additional filtering and/or one or more porous polymer films disposed over inlet or outlet openings in the housing to reduce or prevent particulate contamination. The filter assembly may be used in a device, such as a computer disk drive, to filter a fluid, such as air, within and/or entering or exiting the device.

Filter assembly with shaped adsorbent article; and devices and methods of use

An adsorbent pouch assembly for removing gaseous contaminants and impurities from a gas stream. The assembly is particularly designed for non-adhesively mounting into the internal enclosure of a disk drive.

Adsorbent pouch for removal of gaseous contaminants

A filter assembly includes a shaped adsorbent article disposed in a housing. The shaped adsorbent article has one or more projections extending from a surface of the article toward the housing to provide for flow of fluid between the shaped adsorbent article and the housing. The filter assembly may optionally include a diffiusion channel for additional filtering and/or one or more porous polymer films disposed over inlet or outlet openings in the housing to reduce or prevent particulate contamination. The filter assembly may be used in a device, such as a computer disk drive, to filter a fluid, such as air, within and/or entering or exiting the device.

A filter has a channel layer film defining a channel, a boundary layer mounted to at least a portion of the channel layer film and forming a non-adhesive boundary for the channel, and filter media disposed in fluid communication with the channel. The boundary layer typically includes a non-porous or semipermeable film. The filter is configured and arranged to provide for flow of at least a portion of a fluid along the channel and into the filter media. This filter can be used in a device as a filter over a vent in a housing of the device.

Growing community of inventors

Saint Paul, MN, United States of America

Randy J Logan