Measuring and testing – Sampler – sample handling – etc. – Capture device
Patent
1994-12-20
1995-10-31
Asher, Kimberly L.
Measuring and testing
Sampler, sample handling, etc.
Capture device
12820422, 12820524, 12820128, 12820213, 12820418, G01N 114, A62B 902
Patent
active
054619343
ABSTRACT:
An ambient air collection device comprising a primary induction valve having a body, an air inlet, an air outlet, an ambient air output port, a channel extended between the air inlet and air outlet, an actuation chamber having an input port coupled to the channel and an output port coupled to the ambient air output port, an ambient air intake valve coupled to the actuation chamber for delivering ambient air thereto, switch means positioned within the input port and output port of the actuation chamber and having a biased orientation for allowing transfer of ambient air within the actuation chamber to the ambient air output port based upon detection of a flow of breathable air through the channel and an unbiased orientation for preventing such transfer when no flow is detected; and a removable hollow vacuum pressurized vacuum test cylinder coupled to the ambient air output port for collecting the ambient air.
REFERENCES:
patent: 4195524 (1980-04-01), Hansen
patent: 4476708 (1984-10-01), Baker et al.
patent: 4949582 (1990-08-01), Vollweiler
patent: 5072737 (1991-12-01), Goulding
patent: 5335653 (1994-08-01), Blomqvist et al.
patent: 5368021 (1994-11-01), Beard et al.
Asher Kimberly L.
Raciti Eric P.
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