Directional valve
First Claim
Patent Images
1. A directional valve for a breathing apparatus, comprising:
- a valve seat surrounding a valve port;
a valve plate resting unattached on said valve seat and thereby occluding said valve port; and
said valve plate having a soft, pliable surface region in contact with said valve seat and a substantially stiff region spanning said valve port.
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Accused Products
Abstract
A directional valve for a breathing apparatus, such as an anaesthetic machine, has a valve seat with a valve port and a valve plate resting loosely on a valve seat. The valve plate has a soft, pliant area on its surface in contact with the valve seat and a relatively rigid area across the valve port.
81 Citations
4 Claims
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1. A directional valve for a breathing apparatus, comprising:
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a valve seat surrounding a valve port;
a valve plate resting unattached on said valve seat and thereby occluding said valve port; and
said valve plate having a soft, pliable surface region in contact with said valve seat and a substantially stiff region spanning said valve port. - View Dependent Claims (2, 3, 4)
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Specification