Flow control in an ink pen

Details Flow control in an ink pen Flow control in an ink pen

2011-01-04

2011-01-04

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S085000

Reexamination Certificate

active

07862138

ABSTRACT:
In one embodiment a pressure regulator for an ink pen includes: a diaphragm between a lower pressure region and a higher pressure region, the diaphragm movable toward the lower pressure region in response to an increase in a pressure difference across the diaphragm; a valve operative between an open position in which ink may flow into the lower pressure region and a closed position in which ink may not flow into the lower pressure region; a first lever rotatable on a first fulcrum in response to movement of the diaphragm toward the lower pressure region; and a second lever connected to the valve, the second lever rotatable on a second fulcrum in response to rotation of the first lever to move the valve from the closed position to an open position.

REFERENCES:
patent: 6508545 (2003-01-01), Dowell
patent: 2002/0149646 (2002-10-01), Pawlowski et al.
patent: 2004/0257413 (2004-12-01), Anderson
patent: 08156280 (1996-06-01), None
patent: 09-118021 (1997-06-01), None
International Search Report dated Mar. 31, 2009 for PCT Application No. PCT/US2008/078629 Filing Date Oct. 2, 2008.

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