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US 6,270,276 B1Granted
Refillable reservoir
AssigneeParker Pen Products
InventorRoger Virgo
Life of this patent
Estimating the term…
Abstract
A refillable reservoir, particularly an ink converter for a fountain pen, has a cylinder in which a piston is slidable, and an actuating device for displacing the piston for refilling the ink chamber. Without needing to be detached from the piston, the actuating device can be stored substantially within the length of the chamber. The actuating device can be a rod which is disengageable from and slidable through the piston. Alternatively the actuating device can be a flexible ribbon coupled to a sleeve slidably mounted on the cylinder.
Claims7
A refillable reservoir for a pen comprising:
- a) a cylinder enclosing a reservoir chamber;
- b) a piston axially slidable in the cylinder to expel air out of and draw fluid in through the forward end of the cylinder;
- c) a device for actuating the piston having a part extending through a rear part of the cylinder for connection to the piston, the device being movable axially of the cylinder for directly driving the piston and, without becoming detached from the piston, being positionable substantially within the length of the cylinder when the chamber is filled,
- wherein the actuating device comprises an actuating member comprising a sleeve extending about the cylinder, said sleeve being movable parallel with the cylinder axis and alongside the cylinder;
- and
- d) an elongated strip interconnecting the piston and the actuating member.
3 more elements
Dependencies are inferred from the claim text.