Anti-duffusion chemical breather assembly for disk drives
AssigneeDonaldson Company, Inc.
InventorRichard J. Osendorf
Life of this patent
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Abstract
An anti-diffusion chemical breather assembly for disk drives having a body portion (20), a cover portion (40), and a filter media (50), including a layer (51) impregnated with activated charcoal granules (53). When assembled, the body portion (20) and cover portion (40) define therebetween a sealed tortuous passage 15 which provides fluid communication between external environment and a hard disk drive interior when the apparatus is positioned in a receiving cavity of a hard disk drive. The tortuous passage limits the rate of moisture entry into the disk drive unit.
Claims16
An anti-diffusion apparatus for a hard disk drive comprising:
- (a) a body portion having an exterior surface and a lower surface, said lower surface including at least one tortuous therein, said passage extending from an inlet at said exterior surface of said body portion to an outlet along said lower surface of said body portion;
- (b) a cover portion having a first surface and a second surface and at least one opening therethrough, said first surface secured to said body portion with said first surface cooperatively engaging said lower surface of said body portion with said outlet of said body portion aligned with said opening through said cover portion, said engaged body and cover portions forming a sealed passage therebetween, said sealed passage providing fluid communication between external environment and hard disk drive interior when said apparatus is positioned in a receiving cavity of said hard disk drive;
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- (c) a filter media secured to said second surface of said cover.
An anti-diffusion apparatus for a hard disk drive comprising:
- (a) a body portion having an upper surface and a lower surface and at least one tortuous passage therein, said passage forming a channel in said lower surface and extending from an inlet at an outer end of said upper surface of said body portion to an outlet at an inner end of said lower surface;
- (b) a cover portion having a first surface and a second surface and at least one opening therethrough, said first surface secured to said body portion with said first surface cooperatively engaging said lower surface of said body portion with said outlet aligned with said opening through said cover portion, said engaged body and cover portions forming a sealed passage therebetween, said sealed passage providing fluid communication between external environment and hard disk drive interior when said apparatus is positioned in a receiving cavity of said hard disk drive;
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- (c) a filter media secured to said second surface of said cover.
Dependencies are inferred from the claim text.