Vibration decoupler
AssigneeBAE SYSTEMS plc
InventorsDerek Scholes, Alexander Grint, Michael Fraser, Paul Douglas
Life of this patent
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Abstract
A respirator comprising: an air supply unit arranged to deliver air at its output; headgear comprising a cradle for interfacing with a user's head, and a face covering from within which the user breathes; a tube to receive air from the air supply unit; and a vibration decoupler, provided between the air supply unit and the head gear interface component, such that in use vibrations from the air supply and tube are reduced.
Claims20
A respirator comprising:
- an air supply unit arranged to deliver air at its output and configured to be worn or carried proximate a user's waist;
- headgear comprising a cradle configured to interface with a user's head, and a face covering from within which the user breathes;
- a first tube to receive air from the air supply unit;
- an interface component to receive air from the first tube and to deliver said air within the face covering;
- and
- a vibration decoupler, provided between the first tube and the interface component, such that in use vibrations from the air supply unit and first tube are reduced, wherein the vibration decoupler comprises a tube of non self-supporting material, the non self-supporting material comprising an airtight fabric, wherein the tube of non self-supporting material has a lower bending stiffness than the first tube, and wherein the first tube is longer than the tube of non self-supporting material.
A method of reducing vibrational noise in a respirator assembly, the method comprising coupling a vibration decoupler between an air supply tube and an interface component, the interface component configured to deliver air within a face covering of the respirator by locating over the user's head in use, said air being provided via the air supply tube, wherein said vibration decoupler is configured to reduce vibrational noise from the air supply tube to the interface component wherein the vibration decoupler comprises a tube of non self-supporting material, the non self-supporting material comprising an airtight fabric, wherein the tube of non self-supporting material has a lower bending stiffness than the air supply tube, wherein the air supply tube is longer than the tube of non self-supporting material, and wherein the air supply tube approaches the tube of non self-supporting material in a direction generally parallel to a user's back, and couples to the tube of non self-supporting material proximate to the back of a user's head and/or neck.
A respirator comprising:
- an air supply unit arranged to deliver air at its output and configured to be worn or carried proximate a user's waist;
- headgear comprising a cradle configured to interface with a user's head, and a face covering from within which the user breathes;
- a first tube to receive air from the air supply unit;
- an interface component to receive air from the tube and to deliver said air within the face covering;
- and
- a vibration decoupler comprising a second tube and provided between the first tube and the interface component, such that in use vibrations from the air supply unit and first tube are reduced, wherein the second tube of the vibration decoupler comprises a non self-supporting material, wherein the second tube has a lower bending stiffness than the first tube, and wherein the first tube is longer than the second tube.
Dependencies are inferred from the claim text.