Title:
IMPROVEMENTS TO POWERED AIR BREATHING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/051715
Kind Code:
A3
Abstract:
A safety breathing apparatus has a sensor for measuring the difference in pressure between two point (1a, 1b) in the gas delivered to a head unit (9). 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.
Inventors:
ZWOLINSKY ALBERT F (CH)
MARSHALL RICHARD D (GB)
HALL CHRISTOPHER G (GB)
MARSHALL RICHARD D (GB)
HALL CHRISTOPHER G (GB)
Application Number:
PCT/GB2010/051803
Publication Date:
August 18, 2011
Filing Date:
October 27, 2010
Export Citation:
Assignee:
SCOTT HEALTH & SAFETY LTD (GB)
ZWOLINSKY ALBERT F (CH)
MARSHALL RICHARD D (GB)
HALL CHRISTOPHER G (GB)
ZWOLINSKY ALBERT F (CH)
MARSHALL RICHARD D (GB)
HALL CHRISTOPHER G (GB)
International Classes:
A62B9/04; A62B9/00; A62B18/00
Domestic Patent References:
| WO2009029326A1 | 2009-03-05 | |||
| WO2009020765A1 | 2009-02-12 | |||
| WO2001080952A1 | 2001-11-01 | |||
| WO1996029116A1 | 1996-09-26 | |||
| WO2002011815A1 | 2002-02-14 |
Foreign References:
| GB2336319A | 1999-10-20 | |||
| US20050183721A1 | 2005-08-25 | |||
| EP2070563A1 | 2009-06-17 | |||
| US20050263155A1 | 2005-12-01 | |||
| US20060090754A1 | 2006-05-04 | |||
| EP0916369A2 | 1999-05-19 |
Attorney, Agent or Firm:
HEDGES, Martin Nicholas (London, Greater London WC1V 7LE, GB)
Download PDF: