Gas separation: apparatus – With signals – indicators – measuring – or testing means – Light signal
Reexamination Certificate
2007-12-11
2007-12-11
Hopkins, Robert (Department: 1724)
Gas separation: apparatus
With signals, indicators, measuring, or testing means
Light signal
C096S419000, C096S422000, C096S424000, C055SDIG036
Reexamination Certificate
active
10858667
ABSTRACT:
A service recording device for a filter is particularly suited for an extraction hood with an air flow device with a variable volumetric flow. The service recording device has a counter device with a variable counting speed. The counting speed of the air flow device is thus a function of the volumetric flow of the air flow device.
REFERENCES:
patent: 6203590 (2001-03-01), Byrd et al.
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Rohrbach Peter
Schmitt Christoph
BSH Bosch und Siemens Haus-geraete GmbH
Hopkins Robert
Howard James E.
Loest Craig J.
Warnock Russell W.
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