BREATHING APPARATUS
申请公布号:US2010147306(A1)
申请号:US20090482105
申请日期:2009.06.10
申请公布日期:2010.06.17
发明人:TOWNSEND PAUL;HODSON DAVID
分类号:A62B9/02;A62B18/10
主分类号:A62B9/02
摘要:A face mask (10) mechanically coupled to a lung demand valve (LDV) (12). The face mask (10) comprises a main mask and an inner mask (15) which fits over the wearer's mouth and nose. The interior of the inner mask (15) is in fluidic communication with the interior of the main mask (10) by means of non-return valves (16). The interior of the main mask is in fluidic communication with an inlet port (18) which is mechanically and fluidically coupled to a supply port (20) of an LDV. The LDV (12) includes a diaphragm and a cover (44) which comprises three parts (44a, 44b) and (44c). Exhaled air is used to flush the space around the diaphragm. Thus, any toxic or undesirable gas in the vicinity of the diaphragm is pushed out to atmosphere by the exhaled air flowing past and around the diaphragm.
INVERTED F ANTENNA HAVING MEANDER RADIATION
CHAIR ASSEMBLY THILTHING CONTROL UNIT
CHARGER WITH WAITING CURRENT CUT-OFF SWITCH
CLOSED CIRCULAR-TYPE SYNTHETIC FIBER FOR CONCRETE REINFORCEMENT
METHOD AND APPARATUS OF TRANSMITTING AND RECEIVING A FRAME SYNCHRONIZATION DETECTION SIGNAL
SCALABLE VIDEO ENCODING/DECODING METHOD AND APPARATUS FOR PARALLEL ARRAY PROCESSOR
METHOD TO COMPOSE EMAIL MESSAGE IN CELLULAR PHONE
MULTI-FUNCTIONAL SUCTION MUFFLER FOR AIR COMPRESSOR
METHOD FOR OPERATING SHORTCUT KEY IN FIXED MOBILE CONVERGENCE TERMINAL
EDM ELCTRODE STRUCTURE FOR SIDE SEAL SLOT OF THE GAS TURBINE NOZZLES
COMPOSITE MAGNETIC MATERIAL AND METHOD FOR FABRICATING THE SAME