3m Innovative Properties Company

Scott Health & Safety Limited

Richard D Marshall

Albert F Zwolinsky

Robert Carr

Christopher G Hall

Steven Thurgood

Barry Lewin

Christopher Sumner

Paul Hensey

Anthony W Pickett

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 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

Growing community of inventors

Skelmersdale, United Kingdom

Richard D Marshall