US6068422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ecologically beneficial refill for a pen including a level indicator and writeout scale
Assignee: Eversharp Pen Co
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Filing: 1998-10-22
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Granted: 2000-05-30
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Expires: 2018-10-22
Abstract
Abstract A refill is provided that is packaged in a recyclable assembly of recyclable plastic and recyclable paper or cardboard. The refill is further constructed from recyclable plastic and uses soy resins for the ink. On a barrel of the ink refill is a graduated scale indicative of the amount of writeout of ink remaining in the pen. In addition, a follower, such as a floating ball or chemical chaser, clearly identifies the level of ink remaining in the refill. The assembly may further include a scale corresponding to the scale on the refill and may further include information relating to the recyclability utilization of the assembly and refill.
Inventors
- 👤 Paul A. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:55
CPC Classifications
B; B43; B43K; B43K7/00; B43K7/02; B43K7/06; B43K5/00; B43K5/02; B43K5/12
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
122 words
A pen refill comprising: an elongated barrel having a first end and a second end defining an interior wherein the first end is a writing tip; ink contained within the interior of the barrel disposed between the first end and a point intermediate the first end and the second end wherein the ink has a level; a level indicator in the interior of the barrel capable of advancing with the ink in the interior of the barrel from the point intermediate the first end and the second end and toward the first end wherein the level indicator is visible through the barrel at the level of the ink; and a graduated scale associated with the barrel identifying various levels of the ink.
Claim 2
Dependent Claim
122 words
A pen refill comprising: an elongated barrel having a first end and a second end defining an interior wherein the first end is a writing tip; ink contained within the interior of the barrel disposed between the first end and a point intermediate the first end and the second end wherein the ink has a level; a level indicator in the interior of the barrel capable of advancing with the ink in the interior of the barrel from the point intermediate the first end and the second end and toward the first end wherein the level indicator is visible through the barrel at the level of the ink; and a graduated scale associated with the barrel identifying various levels of the ink.
Claim 3
Dependent Claim
33 words
The refill of claim 1 wherein the level indicator is a ball capable of floating at the level of the ink and advancing in the interior of the barrel as the level decreases.
Claim 4
Dependent Claim
12 words
The refill of claim 2 wherein the ball is constructed from plastic.
Claim 5
Dependent Claim
40 words
The refill of claim 1 wherein the level indicator is a chemical compound that follows the ink without mixing with the ink and advances with the level of the ink as the ink decreases in the interior of the barrel.
Claim 6
Dependent Claim
41 words
The refill of claim 1 wherein the graduated scale has: a plurality of marks associated with the barrel identifying various levels of the ink wherein one of the plurality of marks is distinct from a remainder of the plurality of marks.
Claim 7
Dependent Claim
13 words
The refill of claim 1 wherein the barrel is constructed from recyclable plastic.
Claim 8
Dependent Claim
10 words
The refill of claim 1 wherein the barrel is transparent.
Claim 9
Dependent Claim
15 words
The refill of claim 1 wherein the level indicator is distinctly colored from the ink.
Claim 10
Dependent Claim
83 words
A packaged refill assembly comprising: a recyclable paper layer; a recyclable plastic layer wherein the plastic layer attaches to the paper layer; a pen refill sandwiched between the paper layer and the plastic layer wherein the refill includes a writing end and an opposite end defining a length having an interior; ink within the interior of the refill; a graduated scale on the packaged refill assembly associated with the refill identifying various levels of the ink remaining in the interior of the refill.
Claim 11
Dependent Claim
83 words
A packaged refill assembly comprising: a recyclable paper layer; a recyclable plastic layer wherein the plastic layer attaches to the paper layer; a pen refill sandwiched between the paper layer and the plastic layer wherein the refill includes a writing end and an opposite end defining a length having an interior; ink within the interior of the refill; a graduated scale on the packaged refill assembly associated with the refill identifying various levels of the ink remaining in the interior of the refill.
Claim 12
Dependent Claim
34 words
The assembly of claim 9 further comprising: a plurality of marks identifying the various levels wherein at least one of the plurality of marks is distinct from a remainder of the plurality of marks.
Claim 13
Dependent Claim
28 words
The assembly of claim 9 further comprising: a level indicator in the interior of the refill capable of advancing with the ink in the interior of the refill.
Claim 14
Dependent Claim
36 words
The assembly of claim 9 further comprising: a ball in the interior of the refill capable of floating at the level of the ink and advancing in the interior of the refill as the level decreases.
Claim 15
Dependent Claim
12 words
The assembly of claim 12 wherein the ball is constructed from plastic.
Claim 16
Dependent Claim
14 words
The assembly of claim 12 wherein the ball is distinctly colored from the ink.
Claim 17
Dependent Claim
19 words
The assembly of claim 12 further comprising: information disposed on the paper layer indicating that the assembly is recyclable.
Claim 18
Dependent Claim
41 words
The assembly of claim 9 further comprising: a chemical compound capable of following the ink without mixing with the ink and further capable of advancing with the level of the ink as the ink decreases in the interior of the barrel.
Claim 19
Dependent Claim
15 words
The assembly of claim 16 wherein the chemical compound is distinctly colored from the ink.
Claim 20
Dependent Claim
24 words
The assembly of claim 9 further comprising: a scale associated with the paper layer which corresponds to the graduated scale associated with the refill.
Claim 21
Dependent Claim
125 words
A packaged refill assembly comprising: a recyclable paper layer; a recyclable plastic layer wherein the plastic layer attaches to the paper layer; a pen refill sandwiched between the paper layer and the plastic layer wherein the refill includes a writing end and an opposite end defining a length having an interior; ink within the interior of the refill; a graduated scale associated with the refill identifying various levels of the ink remaining in the interior of the refill; a ball in the interior of the refill capable of floating at the level of the ink and advancing in the interior of the refill as the level decreases; and a scale associated with the paper layer which corresponds to the graduated scale associated with the refill.
Claim 22
Dependent Claim
125 words
A packaged refill assembly comprising: a recyclable paper layer; a recyclable plastic layer wherein the plastic layer attaches to the paper layer; a pen refill sandwiched between the paper layer and the plastic layer wherein the refill includes a writing end and an opposite end defining a length having an interior; ink within the interior of the refill; a graduated scale associated with the refill identifying various levels of the ink remaining in the interior of the refill; a ball in the interior of the refill capable of floating at the level of the ink and advancing in the interior of the refill as the level decreases; and a scale associated with the paper layer which corresponds to the graduated scale associated with the refill.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-05-30 | 2003-11-29 | 2004-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-30 | 2007-11-29 | 2008-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-30 | 2011-11-29 | 2012-05-30 | $7700.00 | Window Closed / Lapsed |