Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2008-03-21
2010-11-30
Huffman, Julian D (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
07841693
ABSTRACT:
A tube pump comprising a flexible tube, a pressing member capable of generating a negative pressure in the tube by sequentially pressing the tube from as the pressing member moves from an upstream portion of the tube to a downstream portion of the tube during a pump operating process, a rotating member which includes a cam surface which the pressing member comes in sliding contact with when the pressing member moves between a pump operating position where a negative pressure is generated in the upstream portion of the tube and a pump non-operating position where the negative pressure is not generated, and a rack member corresponding to the cam surface which includes a plurality of teeth, wherein the pressing member is provided with a pinion member capable of engaging with the rack member when the pressing member rotatably moves between the pump non-operating position and the pump operating position.
REFERENCES:
patent: 6082977 (2000-07-01), Nishioka
patent: 6641249 (2003-11-01), Miyauchi
patent: 7011387 (2006-03-01), Saito et al.
patent: 2002-349452 (2002-12-01), None
patent: 2003-312023 (2003-11-01), None
patent: 2006-044175 (2006-02-01), None
Huffman Julian D
Seiko Epson Corporation
Uhlenhake Jason S
Workman Nydegger
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