Low physiological deadspace snorkel

Details Low physiological deadspace snorkel Low physiological deadspace snorkel

2004-11-15

2009-11-24

Yu, Justine R (Department: 3771)

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

C128S201260, C128S201110, C405S186000, C405S187000

Reexamination Certificate

active

07621268

ABSTRACT:
A snorkel has an inhalation tube and a check valve near a mouthpiece which allows air to flow toward the mouthpiece, and a float valve which closes the inhalation tube. An exhalation tube has a second check valve also located near the mouthpiece which only allows air to flow into the exhalation tube. The snorkel has a purge valve positioned below the mouthpiece. A further check valve is positioned between the inhalation tube and the exhalation tube to allow air or water in the exhalation tube to pass to the inhalation tube placed as close to the first check valve as possible. The exhalation tube outlet orifice may be closed by a simple gravity actuated valve which will float open during a dive. Alternatively the exhalation tube outlet orifice may be closed by a float valve.

REFERENCES:
patent: 1946126 (1934-02-01), Black
patent: 2317237 (1943-04-01), Wilen
patent: 2780224 (1957-02-01), Wallace
patent: 2815751 (1957-12-01), Ferraro
patent: 2865369 (1958-12-01), Kline
patent: 2975439 (1961-03-01), Bentley
patent: 3166083 (1965-01-01), Girden
patent: 3370586 (1968-02-01), Aragona et al.
patent: 3860042 (1975-01-01), Green
patent: 4061140 (1977-12-01), Saito
patent: 4071024 (1978-01-01), Blanc
patent: 4278080 (1981-07-01), Schuch
patent: 4610246 (1986-09-01), Delphia
patent: 4655212 (1987-04-01), Delphia
patent: 4793341 (1988-12-01), Arasmith
patent: 4805610 (1989-02-01), Hunt
patent: 4860739 (1989-08-01), Vandepol
patent: 4872453 (1989-10-01), Christianson
patent: 4877022 (1989-10-01), Christianson
patent: 4896664 (1990-01-01), Harayama
patent: 5117817 (1992-06-01), Lin
patent: 5143059 (1992-09-01), Delphia
patent: 5239990 (1993-08-01), Delphia
patent: 5413059 (1995-05-01), Schips
patent: 5664558 (1997-09-01), Wagner
patent: 5868129 (1999-02-01), Christianson
patent: 5893362 (1999-04-01), Evans
patent: 5937850 (1999-08-01), Kawashima et al.
patent: 6119685 (2000-09-01), Kawashima et al.
patent: 6295983 (2001-10-01), Semeia
patent: 6302102 (2001-10-01), Giroux et al.
patent: 6318363 (2001-11-01), Monnich
patent: 6516897 (2003-02-01), Thompson
patent: 6550479 (2003-04-01), Duxbury
patent: 6655378 (2003-12-01), Swetish
patent: 6668822 (2003-12-01), Monnich
patent: 6668823 (2003-12-01), Liu
patent: 6679253 (2004-01-01), Feng
patent: 6904910 (2005-06-01), Christianson
patent: 6971386 (2005-12-01), Duxbury
patent: 7032591 (2006-04-01), Monnich
patent: 7047965 (2006-05-01), Ball
patent: 7077127 (2006-07-01), Christianson
patent: 7163012 (2007-01-01), Delphia
patent: 2002/0026939 (2002-03-01), Silvestri
patent: 2002/0088460 (2002-07-01), Monnich
patent: 2002/0135380 (2002-09-01), Estelle
patent: 2003/0029448 (2003-02-01), Swetish
patent: 2003/0047182 (2003-03-01), Chen-Lieh
patent: 2003/0121547 (2003-07-01), Aucoin
patent: 2004/0035414 (2004-02-01), Johnson
patent: 2004/0211413 (2004-10-01), Monnich
patent: 2005/0188986 (2005-09-01), Christianson
patent: 2006/0102176 (2006-05-01), Junck
patent: 2006/0185667 (2006-08-01), Delphia
patent: 2006/0254582 (2006-11-01), Christianson
patent: 2006/0272637 (2006-12-01), Johnson
patent: 408048291 (1996-02-01), None
patent: 2002154480 (2002-05-01), None
patent: WO 9109772 (1991-07-01), None
Riffe Snorkel “The Stable” web page printout http://www.speargun.com
ew.htm# May 27, 2004.

Affiliated with

Also associated with

Rating

Low physiological deadspace snorkel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low physiological deadspace snorkel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low physiological deadspace snorkel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4055330