Reduce leakage of low-density gas during low-density gas...

Details Reduce leakage of low-density gas during low-density gas... Reduce leakage of low-density gas during low-density gas...

2011-07-26

2011-07-26

Davis, David D (Department: 2627)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

Reexamination Certificate

active

07986490

ABSTRACT:
Embodiments of the present invention help to prevent leakage of low-density gas during low-density gas injection into a disk drive device and to perform low-density gas injection efficiently. In a hard disk drive (HDD) according to one embodiment of the present invention, an injection hole filter with a valve function is attached to a helium injection hole in order to inject helium gas in an enclosure. The injection hole filter has a valve member configured to operate in an open state or closed state. The open state is a state while the helium gas is being injected and the closed state is a state after the helium gas has been finished to be injected. The valve member is in the open state if the outside pressure is higher than the inside pressure and is in the closed state if the inside pressure is higher than the outside pressure.

REFERENCES:
patent: 5075807 (1991-12-01), Inoue et al.
patent: 5138506 (1992-08-01), Beck et al.
patent: 6958876 (2005-10-01), Feliss et al.
patent: 2003/0021054 (2003-01-01), Feliss et al.
patent: 2003/0179489 (2003-09-01), Bernett et al.
patent: 2005/0068666 (2005-03-01), Albrecht et al.
patent: 2008/0088969 (2008-04-01), Uefune et al.
patent: 2008/0165448 (2008-07-01), Ichikawa et al.
patent: 2004-071112 (2004-03-01), None
patent: 2004-295993 (2004-10-01), None

Affiliated with

Also associated with

Rating

Reduce leakage of low-density gas during low-density gas... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reduce leakage of low-density gas during low-density gas..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduce leakage of low-density gas during low-density gas... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2620478