Reservoir pens and ink cartridges therefor
AssigneeSanford, L.P.
InventorsRoy Nicoll, Jon Winter
Life of this patent
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Abstract
An ink cartridge (1) for a reservoir pen has a body (2) which encloses an ink-chamber (3) that is initially sealed near the front end of the cartridge by a closure formed by a plug (4). The plug (4) sealingly engages in an axial bore (5) which is open to the front end of the cartridge and is slidably mounted in the cartridge body (2) so as to be moved reawardly by engagement with a peg (34) upon insertion of the cartridge (1) into a pen, thereby allowing ink flow from the ink chamber (3) through the bore (5) and to a writing tip (23) of a nib (22) of the pen. The peg (34) is sized so as to form a seal with the inner surface of the bore (5) when fully inserted thereinto.
Claims18
An ink cartridge (1) for a reservoir pen, comprising a body (2) enclosing a chamber (3), an ink port (8) through which, in use, ink delivered from the chamber (3) is discharged from the cartridge (1), and a resilient valve element mounted on the body (2) at the port (8) for controlling flow of ink therethrough, the valve element having an open condition in which the port (8) is opened,
- characterized in that the valve element is inwardly resiliently deformable for closing the port.
An ink cartridge (1) according to any one of the preceding claims wherein the chamber (3) is sealed at the forward end thereof by a closure which is openable to bring the port (8) into communication with the chamber (3).
Dependencies are inferred from the claim text.