Filtering face mask that uses an exhalation valve that has a...

Details Filtering face mask that uses an exhalation valve that has a... Filtering face mask that uses an exhalation valve that has a...

2006-04-18

2006-04-18

Bennett, Henry (Department: 3743)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S207120

Reexamination Certificate

active

07028689

ABSTRACT:
A filtering face mask that includes a mask body and an exhalation valve. The mask body is adapted to fit at least over the nose and mouth of a wearer to create an interior gas space when worn, and the exhalation valve is in fluid communication with the interior gas space. The exhalation valve comprises a valve seat that has a seal surface and an orifice through which an exhale flow stream may pass to leave the interior gas space. A flexible flap is mounted to the valve seat such that the flap makes contact with the seal surface when the valve is in its closed position and such that the flap can flex away from the seal surface during an exhalation to allow exhaled air to pass through the orifice to ultimately enter an exterior gas space. The flexible flap has at least first and second juxtaposed layers where at least one of the layers is stiffer or has a different elastic modulus than the other layer.

REFERENCES:
patent: 2072516 (1937-03-01), Ferenci et al.
patent: 2230770 (1941-02-01), Van Almelo
patent: 2895472 (1959-07-01), Matheson
patent: 3557265 (1971-01-01), Chisholm et al.
patent: 3983900 (1976-10-01), Airhart
patent: 3994319 (1976-11-01), Airhart
patent: 4306584 (1981-12-01), Schlobohm
patent: 4630604 (1986-12-01), Montesi
patent: 4934362 (1990-06-01), Braun
patent: 5285816 (1994-02-01), Herlihy
patent: 5325892 (1994-07-01), Japuntich et al.
patent: 5355910 (1994-10-01), Gies et al.
patent: 5509436 (1996-04-01), Japuntich et al.
patent: 5687767 (1997-11-01), Bowers
patent: 5829433 (1998-11-01), Shigematsu et al.
patent: 6047698 (2000-04-01), Magidson et al.
patent: 6210266 (2001-04-01), Barton
patent: RE37974 (2003-02-01), Bowers
patent: 6584976 (2003-07-01), Japuntich et al.
patent: 0928917 (1999-07-01), None
patent: 2641597 (1990-07-01), None
patent: 2688287 (1993-09-01), None
patent: 349412 (1987-04-01), None
U.S. Appl. No. 09/888,943, filed Jun. 25, 2001, Respirator Valve.
U.S. Appl. No. 09/888,732, filed Jun. 25, 2001, Respirator Valve.
U.S. Appl. No. 09/837,800, filed Apr. 18, 2001, Filtering Face Mask That Has A New Exhalation Valve.
U.S. Appl. No. 09/837,714, filed Apr. 18, 2001, Filtering Face Mask That Has A New Exhalation Valve.
U.S. Appl. No. 09/680,465, filed Oct. 6, 2000, Fibrous Filtration Face Mask Having A New Unidirectional Fluid Valve.
U.S. Appl. No. 09/678,581, filed Oct. 3, 2000, Fibrous Filtration Face Mask Having A New Unidirectional Fluid Valve.
U.S. Appl. No. 09/678,580, filed Oct. 3, 2000, Fibrous Filtration Face Mask Having A New Unidirectional Fluid Valve.
U.S. Appl. No. 09/678,579, filed Oct. 3, 2000, Fibrous Filtration Face Mask Having A New Unidirectional Fluid Valve.
U.S. Appl. No. 09/678,488, filed Oct. 3, 2000, Fibrous Filtration Face Mask Having A New Unidirectional Fluid Valve.
U.S. Appl. No. 09/677,637, filed Oct. 3, 2000, Fibrous Filtration Face Mask Having A New Unidirectional Fluid Valve.
U.S. Appl. No. 09/677,636, filed Oct. 3, 2000, Fibrous Filtration Face Mask Having A New Unidirectional Fluid Valve.
U.S. Appl. No. 08/240,877, filed May 11, 1994, Filtering Face Mask That Has A New Exhalation Valve.
U.S. Appl. No. 09/888,943, Respirator Valve, filed Jun. 25, 2001.
U.S. Appl. No. 09/888,732, Respirator Valve, filed Jun. 25, 2001.
U.S. Appl. No. 9/837,800, Filtering Face Mask That Has a New Exhalation Valve, Apr. 18, 2001.
U.S. Appl. No. 09/837,714, Filtering Face Mask That Has A New Exhalation Valve, Apr. 18, 2001.
U.S. Appl. No. 09/680,465, Fibrous Filtration Face Mask Having A New Undirectional Fluid Valve, filed Oct. 6, 2000.
U.S. Appl. No. 09/678,581, Fibrous Filtration Face Mask Having A New Undirectional Fluid Valve, filed Oct. 3, 2000.
U.S. Appl. No. 09/678,580, Fibrous Filtration Face Mask Having A New Undirectional Fluid Valve, filed Oct. 3, 2000.
U.S. Appl. No. 09/678,579, Fibrous Filtration Face Mask Having A New Undirectional Fluid Valve, filed Oct. 3, 2000.
U.S. Appl. No. 09/678,488, Fibrous Filtration Face Mask Having A New Undirectional Fluid Valve, filed Oct. 3, 2000.
U.S. Appl. No. 09/677,637, Fibrous Filtration Face Mask Having A New Undirectional Fluid Valve, filed Oct. 3, 2000.
U.S. Appl. No. 09/677,636, Fibrous Filtration Face Mask Having A New Undirectional Fluid Valve, filed Oct. 3, 2000.
U.S. Appl. No. 08/240,877, Filtering Face Mask That Has A New Exhalation Valve, filed May 11, 1994.

Affiliated with

Also associated with

Rating

Filtering face mask that uses an exhalation valve that has a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filtering face mask that uses an exhalation valve that has a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filtering face mask that uses an exhalation valve that has a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3590810