Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1981-10-13
1985-02-26
Apley, Richard J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820524, 128910, 1375122, 137102, A61M 1600
Patent
active
045012717
ABSTRACT:
A two-way valve for use in breathing apparatus comprising a valve chamber having a supply end and a mask end, both ends having openings, a valve plate member of thin lightweight material freely movable within the valve chamber between the supply end and the mask end for closing respective openings, the valve plate member defining a flow axis and a generally circular opening centered on the flow axis, a plurality of support arms extending radially inwardly from the perimeter of the circular opening, the support arms defining and being joined together at a solid central hub, a plurality of stub members extending radially inwardly from the perimeter of the circular opening, a fastening boss extending from the central hub towards the mask end of the chamber, retaining flanges on the boss spaced from the valve plate, a flat planar flexible valve membrane attached to the valve plate member, the membrane having a central opening fitting elastically over the boss, and fitting between the valve plate member and the flanges, the valve membrane normally closing the sector-shaped openings, and vents in the chamber being oriented and located so as to be closed by the valve plate member, when the valve plate member is located at the mask end, the vents being opened when the valve plate member is moved away from the mask end.
REFERENCES:
patent: 2931357 (1960-04-01), Arborelius et al.
patent: 3196866 (1965-07-01), Adams
patent: 3200818 (1965-08-01), Johannisson
patent: 3216413 (1965-11-01), Mota
patent: 3366133 (1968-01-01), Johannisson
patent: 3419029 (1968-12-01), Straub
patent: 3424185 (1969-01-01), Lansky et al.
patent: 3435839 (1969-04-01), Elder
patent: 3795257 (1974-03-01), Fabish et al.
patent: 3799185 (1974-03-01), Milnes et al.
patent: 4121580 (1978-10-01), Fabish
patent: 4239038 (1980-12-01), Holmes
patent: 4336798 (1982-06-01), Beran
Scavenger-OR Gas Evacuator from Air Products Advertisement, 1975.
Clifton John T.
Spear John W.
Apley Richard J.
Macey Harry J.
Rolston George A.
Spear John William
LandOfFree
Resuscitator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Resuscitator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resuscitator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-512528