Scott Health & Safety Limited

3M Innovative Properties Company

Christopher G Hall

Albert F Zwolinsky

Sally Leyland

Richard D Marshall

Robert Carr

Frank Angear

Richard D Marshal

Christopher Sumner

A safety breathing apparatus has a sensor for measuring the difference in pressure between two pointin the gas delivered to a head unit. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.

Powered air breathing apparatus

A safety breathing apparatus has a sensor for measuring the difference in pressure between two point in the gas delivered to a head unit. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.

Breathing apparatus

A headgear support device () supports a face shield (). The device includes a headband () having an elongated slot () and a pivot element () which is affixed to the face shield (). The pivot element is slidably located within the slot to enable translational movement of the face shield. The pivot element is also rotatable within the slot to enable rotational movement of the face shield. The device also includes a retaining element for retaining the pivot element in the slot to enable translational movement of the pivot element and face shield. Translational movement of the pivot element enables the face shield to be positioned closer to, or further from, a user's face in order to provide greater comfort for the user.

Headgear support device having front-back adjustment

A safety breathing apparatus has a sensor for measuring the difference in pressure between two points in the gas delivered to a head unit. The sensor is used to measure the difference in the pressure of the gas supplied through the apparatus between the two points in the gas flow, and the pressure difference is then used to calculate the gas flow rate.

Improvements to powered air breathing apparatus

Blower unit for breathing mask

Breathing mask

Growing community of inventors

Skelmersdale, United Kingdom

Christopher G Hall