3m Innovative Properties Company

Peter D Lee

Desmond T Curran

Daniel Martin

David S Taylor

Christopher P Henderson

Derek S Baker

Richard D Williams

Peter B Allen

Scott R Alexander

Peter N Yates

Paul Hind

A respiratory component mounting assembly includes a first respiratory component, a second respiratory component and a mounting clip for mounting the second respiratory component to the first respiratory component. Each of the first and second respiratory components includes at least two spaced apart clip openings. The mounting clip has an intermediate portion and two spaced apart free ends connected to the intermediate portion. The intermediate portion of the mounting clip is received within both of the clip openings of the first respiratory component and the free ends of the mounting clip are received in the clip openings of the second respiratory component for releasably securing the first and second respiratory components together.

Respiratory component mounting assembly

An anatomically fitted belt is used for carrying one or more waist-mounted respiratory protection components. The belt includes a main belt portion and a belt buckle portion. The main belt portion includes a back section, a left side section, a right side section, a left connective section between the back section and the left side section, and a right connective section between the back section and the right side section. The back section is wider than the other sections of the main belt portion. The main belt portion has a generally conical shape to be secured around a user's pelvic girdle and to align the respiratory component over the lumbar region of the user's spine to distribute a weight of the respiratory component. The belt buckle portion includes a right piece connected to the right side section of the main belt portion and a left piece connected to the left side section of the main belt portion.

Anatomically fitted respiratory component belt

A supplied air helmetcomprises a visorand a face sealthat is secured to the visor. The face sealincludes a sealing memberand a frame memberThe sealing memberextends radially inward from the frame memberand has first and second regions of permeabilityandThe second regionhas greater permeability than the first regionThe use of a face sealthat has differentiated permeability allows for a controlled flow of air through the interior of the supplied air helmet

Supplied air helmet having face seal with differentiated permeability

Side portion of a welding helmet

Air duct

A respirator hoodthat has an air chamberarranged above the head of a user for delivery of breathable air. The air chamberhas an air inletconnected to an air supply hoseand an air outletThe outletis arranged to direct air away from the eyes of the user. The air chamberforms an air ductthat substantially covers the top of the hoodabove the user's head. The ductis collapse-resistant so that the duct shape is maintained in use and air flow through the ductis substantially unrestricted. As a result, a substantially uniform air flow can be achieved in use, which air flow pattern is repeatable from day to day and from hood to hood.

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Hartlepool, United Kingdom

Peter D Lee