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US 8,074,648 B2Granted
Respiratory protection device
Assignee3M Innovative Properties Company
InventorsJames R. Betz, Brandon H. Harmon, Andrew S. Viner, Scott A. Larson, David M. Castiglione
Life of this patent
Estimating the term…
Abstract
A respiratory device includes a face seal and a unitary body that forms an interface with the face seal and includes a lens and a chassis. The chassis includes at least one port for fluidic connection.
Claims14
A respiratory protection device that comprises:
- (a) a lens;
- (b) a chassis that surrounds a portion of the lens;
- (c) a face seal that includes an annular ring that has a surface that forms an interface with the chassis;
- and
- (d) a frame that surrounds an outer surface of the annular ring and that enables the face seal to be clamped to the chassis and that allows the lens and the chassis to be removed from the face seal.
2 more elements
Dependencies are inferred from the claim text.