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US 7,107,989 B2Granted
Mask with gusset
AssigneeResMed Limited
InventorsRobert H. Frater, Joanne Drew, Michael K. Gunaratnam
Life of this patent
Estimating the term…
Abstract
A mask system for delivering air to a user includes a suspension mechanism to allow relative movement between a face-contacting cushion and a mask shell. The suspension mechanism also provides a predetermined force to the cushion that is a fiction of mask pressure, displacement of the cushion or both.
Claims20
A breathable gas mask arrangement comprising:
- a mask shell having a portion adapted to receive a supply of pressurized breathable gas and a user side;
- a gusset portion having a first side attached to the user side of the shell and having a second side;
- a cushion having a first portion attached to the second side of the gusset portion and a second portion constructed and arranged to contact a user's face in use and provide a seal between the mask arrangement and the user's face;
- and
- headgear constructed and arranged to attach the mask shell to the user;
- wherein:
- the gusset portion includes a gusset having a flexible sidewall, and
- a maximum width of the gusset portion over an operating pressure range is greater than a width of the mask shell.
5 more elements
A breathable gas mask arrangement comprising:
- a mask shell having a portion adapted to receive a supply of pressurized breathable gas and a user side;
- a gusset portion having a first side attached to the user side of the shell and having a second side;
- a cushion having a first portion attached to the second side of the gusset portion and a second portion constructed and arranged to contact a user's face in use and provide a seal between the mask arrangement and the user's face;
- and
- headgear constructed and arranged to attach the mask shell to the user;
- wherein:
- the gusset portion includes a gusset having a flexible sidewall, and
- the cushion is directly attached to an elastic sidewall of the gusset portion.
5 more elements
A breathable gas mask arrangement comprising:
- a mask shell having a portion adapted to receive a supply of pressurized breathable gas and a user side;
- a gusset portion having a first side attached to the user side of the shell and having a second side;
- a cushion having a first portion attached to the second side of the gusset portion and a second portion constructed and arranged to contact a user's face in use and provide a seal between the mask arrangement and the user's face;
- and
- headgear constructed and arranged to attach the mask shell to the user;
- wherein:
- the gusset portion includes a gusset having a flexible sidewall, and
- an elastic sidewall of the gusset portion extends outward from the cushion.
5 more elements
A breathable gas mask arrangement comprising:
- a mask shell having a portion adapted to receive a supply of pressurized breathable gas and a user side;
- a gusset portion having a first side attached to the user side of the shell and having a second side;
- a cushion having a first portion attached to the second side of the gusset portion and a second portion constructed and arranged to contact a user's face in use and provide a seal between the mask arrangement and the user's face;
- and
- headgear constructed and arranged to attach the mask shell to the user;
- wherein:
- the gusset portion includes a gusset having a flexible sidewall, and
- a component of contact force Fc provided by the supply of pressurized breathable gas acting on the gusset portion is sufficient to maintain the seal between the mask arrangement and the user's face without adjusting strap tension.
5 more elements
A breathable gas mask arrangement comprising:
- a mask shell having a portion adapted to receive a supply of pressurized breathable gas and a user side;
- a gusset portion having a first side attached to the user side of the shell and having a second side;
- a cushion having a first portion attached to the second side of the gusset portion and a second portion constructed and arranged to contact a user's face in use and provide a seal between the mask arrangement and the user's face;
- and
- headgear constructed and arranged to attach the mask shell to the user;
- wherein:
- the gusset portion includes a gusset having a flexible sidewall, and
- the gusset portion consists essentially of a single gusset.
5 more elements
A breathable gas mask arrangement, comprising:
- a mask shell having a portion adapted to receive a supply of pressurized breathable gas and a user side;
- a gusset portion having a first side attached to the user side of the shell and having a second side;
- a cushion having a first portion attached to the second side of the gusset portion and a second portion constructed and arranged to contact a user's face in use and provide a seal between the mask arrangement and the user's face;
- wherein:
- a distance between the mask shell and the cushion is variable, and
- the cushion is directly attached to an elastic sidewall of the gusset portion.
3 more elements
A breathable gas mask arrangement, comprising:
- a mask shell having a portion adapted to receive a supply of pressurized breathable gas and a user side;
- a gusset portion having a first side attached to the user side of the shell and having a second side;
- a cushion having a first portion attached to the second side of the gusset portion and a second portion constructed and arranged to contact a user's face in use and provide a seal between the mask arrangement and the user's face:
- wherein:
- a distance between the mask shell and the cushion is variable, and
- a maximum width of the gusset portion over an operating pressure range is greater than a width of the mask shell.
3 more elements
A breathable gas mask arrangement, comprising:
- a mask shell having a portion adapted to receive a supply of pressurized breathable gas and a user side;
- a gusset portion having a first side attached to the user side of the shell and having a second side;
- a cushion having a first portion attached to the second side of the gusset portion and a second portion constructed and arranged to contact a user's face in use and provide a seal between the mask arrangement and the user's face;
- wherein:
- a distance between the mask shell and the cushion is variable, and
- an elastic sidewall of the gusset portion extends outward from the cushion.
3 more elements
Dependencies are inferred from the claim text.