Patent ID: 7599148

Claim:
A method for guiding bypass reentry flow through a filter integrated into a bypass channel wall in a hard disk drive comprising: providing a bypass channel for directing airflow away from a first portion of a disk of the hard disk drive and toward a second portion of the disk of the hard disk drive, said bypass channel comprising an inner bypass channel sidewall and an outer bypass channel sidewall; providing a first filter portion integral with said inner bypass channel sidewall, said filter portion for filtering a first portion of said airflow directed toward a third portion of the disk of the hard disk drive wherein a second portion of said airflow is directed toward said second portion of said disk drive; and providing a second filter portion in-line with said bypass channel, said second filter portion provided after said first filter portion with respect to said airflow wherein a contraction portion is located closer to the second portion of the disk of the hard disk drive than the filter portion.