Anti-surf head on dry-type snorkel

Details Anti-surf head on dry-type snorkel Anti-surf head on dry-type snorkel

2006-02-07

2006-02-07

Mitchell, Teena (Department: 3743)

Surgery

Respiratory method or device

Draw-type snorkel

C128S201270, C405S186000

Reexamination Certificate

active

06994084

ABSTRACT:
The present invention relates to an anti-surf head on a dry-type snorkel, including a buoy formed on a lateral, an air chamber formed in a lid to increase buoyancy, thereby keeping an upright floating to prevent the buoy from fast shutting off or prevent seawater from entering the snorkel easily, and a set of guiding groove formed on a bottom of a partition to facilitate draining water out of the snorkel without causing retro-flow.

REFERENCES:
patent: 5117817 (1992-06-01), Lin et al.
patent: 6679253 (2004-01-01), Feng et al.
patent: 6843246 (2005-01-01), Shiue et al.
patent: WO 94/29167 (1994-12-01), None

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