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US 6,149,335 AGranted
Seal for a pen refill system and a method for using the same
OwnerPaul A. Smithinventor
Life of this patent
Estimating the term…
Abstract
A seal that attaches to a pen cap, a sealable pen refill system and a method of using the same are provided. The seal fits over an end of the pen refill cap. The pen refill cap and the seal then fit over a tip of the pen refill compartment acting as a seal to elements such as air and moisture.
Claims18
An apparatus for enclosing a tip of a refill for a writing instrument, the apparatus comprising:
- a seal having a body defined between a first end and a second end wherein the first end has a first opening therein and further wherein the second end has a second opening therein which is smaller than the first opening and forms a stop at the bottom of the first opening, the seal further having an interior wall and an exterior wall wherein the interior wall is substantially parallel to the exterior wall;
- and
- a pen refill cap sealingly engaged within the first opening of the seal in contact with the interior wall of the seal and the stop wherein the cap encloses the tip of the refill for the writing instrument.
A pen refill system comprising:
- a seal having a body defined between a first end and a second end wherein the first end has a first opening therein and further wherein the second end has a second opening therein which is smaller than the first opening and forms a stop at the bottom of the first opening, the seal further having an interior wall and an exterior wall wherein the interior wall is substantially parallel to the exterior wall;
- a pen refill cap sealingly engaged to the seal wherein the pen refill cap is positioned within the first opening of the seal in contact with the interior wall of the seal and the stop;
- and
- a pen refill compartment having an interior containing ink therein removably attached and sealingly engaged to the seal wherein the pen refill compartment is positioned within the second opening of the seal in contact with the interior wall of the seal.
1 more element
A method of making and using a sealed pen refill system, the method comprising the steps of:
- providing a pen refill cap, a seal having a body defined between a first end and a second end wherein the first end has a first opening therein and the second end has a second opening therein which is smaller than the first opening and forms a stop at the bottom of the first opening, the seal further having an interior wall and an exterior wall, and a pen refill compartment having an interior containing ink therein;
- attaching the seal to the pen refill cap wherein the pen refill cap has a first end that fits within the first opening of the seal in contact with the interior wall of the seal and the stop;
- and
- sealingly engaging the seal to the pen refill compartment wherein the pen refill compartment fits within the second opening of the seal in contact with the interior wall of the seal.
1 more element
Dependencies are inferred from the claim text.