Mask with inhalation valve
First Claim
Patent Images
1. A mask for use in inhaling a substance comprising:
- a mask housing defining a chamber and having an inlet and an outlet communicating with said chamber; and
an inhalation valve disposed in said inlet and integrally formed with said mask housing, wherein said valve and said mask housing are formed as a one-piece unit, wherein said inhalation valve is moveable between open and closed positions, and wherein said inhalation valve is positioned entirely exteriorly to said chamber and does not extend into said chamber when positioned in said open and closed positions.
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Accused Products
Abstract
A mask for use in inhaling a substance includes a mask housing defining a chamber. The housing has an inlet and an outlet communicating with the chamber. A valve is disposed in the inlet and is integrally formed with the housing, such that the valve and the housing are formed as a one-piece unit. In a preferred embodiment, the housing further comprises an exhaust port and an exhalation valve disposed in the exhaust port, with a shield disposed around the exhaust port. In another aspect, a method of manufacturing a mask also is provided.
139 Citations
22 Claims
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1. A mask for use in inhaling a substance comprising:
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a mask housing defining a chamber and having an inlet and an outlet communicating with said chamber; and an inhalation valve disposed in said inlet and integrally formed with said mask housing, wherein said valve and said mask housing are formed as a one-piece unit, wherein said inhalation valve is moveable between open and closed positions, and wherein said inhalation valve is positioned entirely exteriorly to said chamber and does not extend into said chamber when positioned in said open and closed positions. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A mask for use in inhaling a substance comprising:
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a mask housing defining a chamber and having an inlet and an outlet communicating with said chamber, said inlet defined by a first tubular wall, wherein said housing further comprises a channel formed around an outer surface of said inlet between said first tubular wall and a second tubular wall, wherein said second tubular wall is formed circumferentially around said first tubular wall in a radially spaced apart relationship therewith; and an inhalation valve disposed in said inlet and integrally formed with said mask housing, wherein said valve and said mask housing are formed as a one-piece unit. - View Dependent Claims (8)
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9. A method of manufacturing an apparatus for delivering a substance to a user, the method comprising:
molding a one-piece mask comprising a mask housing defining a chamber and having an inlet and an outlet communicating with said chamber and an inhalation valve disposed in said inlet and integrally formed with said mask housing, wherein said inhalation valve is moveable between open and closed positions, and wherein said inhalation valve is positioned entirely exteriorly to said chamber and does not extend into said chamber when positioned in said open and closed positions. - View Dependent Claims (10, 11, 12, 13, 14, 15, 17)
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16. A method of manufacturing an apparatus for delivering a substance to a user, the method comprising:
molding a one-piece mask comprising a mask housing defining a chamber and having an inlet and an outlet communicating with said chamber and an inhalation valve disposed in said inlet and integrally formed with said mask housing, said inlet defined by a first tubular wall, wherein said molding said one-piece mask comprises forming a channel around an outer surface of said inlet between said first tubular wall and a second tubular wall, wherein said second tubular wall is formed circumferentially around said first tubular wall in a radially spaced apart relationship. - View Dependent Claims (18)
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19. A mask for use in inhaling a substance comprising:
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a mask housing defining a chamber and having an inlet tube and an outlet communicating with said chamber; an inhalation valve disposed in said inlet tube and integrally formed with said mask housing, wherein said valve and said mask housing are formed as a one-piece unit; and a holding chamber comprising an outlet tube circumferentially disposed around said inlet tube wherein at least a portion of said inhalation valve is disposed in said outlet tube. - View Dependent Claims (20)
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21. A method of manufacturing an apparatus for delivering a substance to a user, the method comprising:
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molding a one-piece mask comprising a mask housing defining a chamber and having an inlet tube and an outlet communicating with said chamber and an inhalation valve disposed in said inlet tube and integrally formed with said mask housing; and inserting an outlet tube of a holding chamber circumferentially around said inlet tube of said mask housing wherein said inhalation valve is disposed in said outlet tube. - View Dependent Claims (22)
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Specification