Metering device for the conveyance of small substance...

Details Metering device for the conveyance of small substance... Metering device for the conveyance of small substance...

2006-03-07

2006-03-07

Nguyen, Dinh Q. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including supply holder for material

C239S102100, C239S101000, C239S102200

Reexamination Certificate

active

07007866

ABSTRACT:
A metering device for the conveyance of small substance quantities out of a reservoir into an application space by a diaphragm micropump that can be used, in particular, for the conveyance of small doses of gases includes the diaphragm micropump conveying an aromatic through a nozzle/diffuser system in fixed doses out of a reservoir first into a pump chamber and subsequently into an application space. As such, by the action of the diaphragm micropump, the volume and pressure of the pump chamber are varied so that aromatic is alternately drawn out of the reservoir into the pump chamber and pressed out of the pump chamber into the application space. In the event of a periodic change in the volume of the pump chamber, a substance located in the reservoir is, thus, conveyed slowly and in predetermined minimal doses into the application space in the course of time.

REFERENCES:
patent: 4702418 (1987-10-01), Carter et al.
patent: 5336062 (1994-08-01), Richter
patent: 5899381 (1999-05-01), Gordon et al.
patent: 6109889 (2000-08-01), Zengerle et al.
patent: 6474566 (2002-11-01), Hirota et al.
patent: 02302534 (1990-12-01), None
patent: 94/19609 (1994-09-01), None
Anders Olsson et al.: “The First Valve-Less Diffuser Gas Pump”,Proceedings IEEE 10thAnnual Int. Workshop on Micro Electro Systems, Jan. 26-30, 1997, pp. 108-113.

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