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US 6,273,562 B1Granted
Ink jet printer pen vent facility
AssigneeHewlett-Packard Company
InventorGovind Sanjeevanrao Deshmukh
Life of this patent
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Abstract
An inkjet pen has a body enclosing an ink reservoir and defining a vent aperture. A vent plug defining an elongated serpentine channel occupies the aperture. The plug may be cylindrical, with smaller diameter pilot ends to facilitate insertion. The serpentine channel may include several segments that alternate in direction, and which occupy a major portion of the plug surface away from an elongated spine surface portion that extends the length of the plug without interruption by the channel.
Claims5
An inkjet pen comprising:
- a body enclosing an ink reservoir;
- the body defining a vent aperture;
- a vent plug occupying the aperture;
- the vent plug defining an elongated serpentine channel;
- and wherein the plug is a cylindrical body having opposed cylindrical end portions and an intermediate portion, and wherein the end portions have smaller diameters than the intermediate portion.
2 more elements
An inkjet ink supply facility comprising:
- a body enclosing an ink reservoir;
- the body defining a vent aperture;
- a vent plug occupying the aperture and defining a vent channel;
- and
- the plug being a cylindrical body having opposed cylindrical end portions and an intermediate portion, and wherein the end portions have smaller diameters than the intermediate portion, such that the end portions serve as pilots to facilitate insertion of the plug into the aperture sized to closely receive the intermediate portion.
2 more elements
Dependencies are inferred from the claim text.