US3776646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing implement
Assignee: Individual
•
Filing: 1972-10-04
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Granted: 1973-12-04
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Expires: 1992-10-04
Abstract
Abstract A writing implement is disclosed in which a nib holder provides a tortuous air passageway between the exterior of the writing implement and an ink reservoir in its interior. The nib holder includes a stem, a frusto-conical tip, and at least one raised rib surrounding the stem and spaced apart from the tip. Through the center of the frusto-conical tip and stem there is a hollow passageway in which a writing nib is securely fitted. The nib holder fits into the front end of the barrel of the writing implement; and the tip, the rib, the interior of the barrel, and a portion of the stem cooperate to form a small air chamber in the writing implement. Another passageway in the tip provides for the communication of air between the exterior of the writing implement and the air chamber and a passageway in the rib provides for the communication of air between the air chamber and the remainder of the interior of the writing implement. The points at which the two passageways enter the air chamber have a different angular orientation with respect to the axis of the stem, thereby providing a tortuous air passage that minimizes any ink leakage from the interior of the writing implement.
Inventors
- 👤 C Bich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:23
CPC Classifications
B; B43; B43K; B43K8/00; B43K8/02; B43K8/003
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
231 words
In a writing implement including a barrel, a nib, and an ink reservoir, a nib holder comprising: a stem having a hollow passageway that extends along the axis of the stem and is adapted to receive the nib; a tip at one end of the stem, said tip containing a hollow passageway that is a continuation of the passageway in the stem and is likewise adapted to receive the nib; a first annular rib extending outwardly of the stem portion and engaging the interior surface of the barrel, said rib being spaced on the stem apart from the tip to define a first air chamber between the rib, the tip, an interior surface of the barrel, and a portion of the stem; a passageway in said tip permitting the communication of air between the exterior of the writing implement and the air chamber; and a passageway in said rib permitting the communication of air between the air chamber and the remainder of the interior of the writing implement, said air passageway entering the air chamber at a point that has a different angular position with respect to the axis of the stem than that at which the air passageway in the tip enters the air chamber, whereby a tortuous passageway is provided between the exterior and interior of the writing implement that permits the passage of air while minimizing ink leakage.
Claim 2
Dependent Claim
231 words
In a writing implement including a barrel, a nib, and an ink reservoir, a nib holder comprising: a stem having a hollow passageway that extends along the axis of the stem and is adapted to receive the nib; a tip at one end of the stem, said tip containing a hollow passageway that is a continuation of the passageway in the stem and is likewise adapted to receive the nib; a first annular rib extending outwardly of the stem portion and engaging the interior surface of the barrel, said rib being spaced on the stem apart from the tip to define a first air chamber between the rib, the tip, an interior surface of the barrel, and a portion of the stem; a passageway in said tip permitting the communication of air between the exterior of the writing implement and the air chamber; and a passageway in said rib permitting the communication of air between the air chamber and the remainder of the interior of the writing implement, said air passageway entering the air chamber at a point that has a different angular position with respect to the axis of the stem than that at which the air passageway in the tip enters the air chamber, whereby a tortuous passageway is provided between the exterior and interior of the writing implement that permits the passage of air while minimizing ink leakage.
Claim 3
Dependent Claim
23 words
The nib holder of claim 1 further comprising means for supporting the forward end of the nib against movement into the writing implement.
Claim 4
Dependent Claim
34 words
The nib holder of claim 1 wherein a shoulder in the hollow passageway through the tip cooperates with a tapered portion of the nib to prevent motion of the nib into the writing implement.
Claim 5
Dependent Claim
89 words
The nib holder of claim 1 further comprising: a second annular rib extending outwardly of the stem portion and engaging the interior surface of the barrel, said rib being spaced on the stem apart from the first rib to define a second air chamber between the first and second ribs, an interior surface of the barrel, and a portion of the stem; and a passageway in said second rib permitting the communication of air between the second air chamber and the remainder of the interior of the writing implement.
Claim 6
Dependent Claim
50 words
The nib holder of claim 4 wherein the passageway in the first rib enters the second air chamber at a point that has a different angular position with respect to the axis of the stem than that at which the passageway in the second rib enters the second air chamber.
Claim 7
Dependent Claim
44 words
The nib holder of claim 1 further comprising an annulus at the end of the stem removed from the tip that cooperates with a set of shoulders defined in the interior of the barrel to prevent movement of the ink reservoir beyond said annulus.
Claim 8
Dependent Claim
31 words
The nib holder of claim 6 wherein the annulus defines an end of the hollow passageway and causes the nib to be positioned on approximately the axis of the ink reservoir.
Claim 9
Dependent Claim
46 words
The nib holder of claim 1 wherein a portion of said tip, located at the point where the tip joins the stem, extends beyond said stem transversely to the axis of the stem and butts against an open end of the barrel of the writing implement.
Claim 10
Dependent Claim
13 words
The nib holder of claim 8 wherein the tip is frusto-conical in shape.
Claim 11
Dependent Claim
234 words
A writing implement comprising: a barrel; a nib; an ink reservoir; and a nib holder, said nib holder further comprising: a stem having a hollow passageway that extends along the axis of the stem and is adapted to receive the nib; a tip at one end of the stem, said tip containing a hollow passageway that is a continuation of the passageway in the stem and is likewise adapted to receive the nib; a first annular rib extending outwardly of the stem portion and engaging the interior surface of the barrel, said rib being spaced on the stem apart from the tip to define a first air chamber between the rib, the tip, an interior surface of the barrel, and a portion of the stem; a passageway in said tip permitting the communication of air bEtween the exterior of the writing implement and the air chamber; and a passageway in said rib permitting the communication of air between the air chamber and the remainder of the interior of the writing implement, said air passageway entering the air chamber at a point that has a different angular position with respect to the axis of the stem than that at which the air passageway in the tip enters the air chamber, whereby a tortuous passageway is provided between the exterior and interior of the writing implement that permits the passage of air while minimizing ink leakage.
Claim 12
Dependent Claim
234 words
A writing implement comprising: a barrel; a nib; an ink reservoir; and a nib holder, said nib holder further comprising: a stem having a hollow passageway that extends along the axis of the stem and is adapted to receive the nib; a tip at one end of the stem, said tip containing a hollow passageway that is a continuation of the passageway in the stem and is likewise adapted to receive the nib; a first annular rib extending outwardly of the stem portion and engaging the interior surface of the barrel, said rib being spaced on the stem apart from the tip to define a first air chamber between the rib, the tip, an interior surface of the barrel, and a portion of the stem; a passageway in said tip permitting the communication of air bEtween the exterior of the writing implement and the air chamber; and a passageway in said rib permitting the communication of air between the air chamber and the remainder of the interior of the writing implement, said air passageway entering the air chamber at a point that has a different angular position with respect to the axis of the stem than that at which the air passageway in the tip enters the air chamber, whereby a tortuous passageway is provided between the exterior and interior of the writing implement that permits the passage of air while minimizing ink leakage.
Claim 13
Dependent Claim
188 words
In a writing implement including a barrel, a nib, and an ink reservoir, a nib holder comprising: a stem; a tip at one end of the stem; a first annular rib extending outwardly of the stem portion and engaging the interior surface of the barrel, said rib being spaced on the stem apart from the tip to define a first air chamber between the rib, the tip, an interior surface of the barrel, and a portion of the stem; a passageway in said tip permitting the communication of air between the exterior of the writing implement and the air chamber; and a passageway in said rib permitting the communication of air between the air chamber and the remainder of the interior of the writing implement, said air passageway entering the air chamber at a point that has a different angular position with respect to the axis of the stem than that at which the air passageway in the tip enters the air chamber, whereby a tortuous passageway is provided between the exterior and interior of the writing implement that permits the passage of air while minimizing ink leakage.
Claim 14
Dependent Claim
188 words
In a writing implement including a barrel, a nib, and an ink reservoir, a nib holder comprising: a stem; a tip at one end of the stem; a first annular rib extending outwardly of the stem portion and engaging the interior surface of the barrel, said rib being spaced on the stem apart from the tip to define a first air chamber between the rib, the tip, an interior surface of the barrel, and a portion of the stem; a passageway in said tip permitting the communication of air between the exterior of the writing implement and the air chamber; and a passageway in said rib permitting the communication of air between the air chamber and the remainder of the interior of the writing implement, said air passageway entering the air chamber at a point that has a different angular position with respect to the axis of the stem than that at which the air passageway in the tip enters the air chamber, whereby a tortuous passageway is provided between the exterior and interior of the writing implement that permits the passage of air while minimizing ink leakage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |