US3724962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fountain pen
Assignee: MONTBLANC SIMPLO GmbH DT
•
Filing: 1971-03-15
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Granted: 1973-04-03
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Expires: 1991-03-15
Abstract
Abstract A fountain pen, in which the barrel of the pen includes an ink holding body in the form of a coiled up strip having webs on one face to hold the convolutions of the coiled up strip apart to create capillary passages. Ink can be supplied to the body from the pen end thereof or from the opposite end thereof. The body is held in the barrel of the pen between ink conducting bodies which interconnect the capillary spaces in the body and one of which communicates with the pen to supply ink thereto.
Inventors
- 👤 H Herrnring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:41
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/02
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
187 words
In a fountain pen, a tubular housing having a pen at one end, and ink storage means in said housing in communication with said pen, said ink storage means comprising a spirally coiled strip forming a storage body, said strip being formed with protuberant webs whereby adjacent convolutions of the storage body formed by said strips are radially spaced from each other for flatter through-passages, said storage body thereby increasing in capillarity in the axial and radial directions toward said pen, said webs extending from edge to edge of said strip and being inclined to the direction of the length of said strip and having a greater pitch near the axis of said storage body than near the periphery thereof, the ratio of the spacing between adjacent webs in longitudinal direction of the web to the height of the web at the side of the web adjacent to rear end of the storage body being from about 5 to 1 to about 8 to 1 and at the opposite side of the web adjacent to the pen being about 8 to 1 to about 18 to 1.
Claim 2
Dependent Claim
187 words
In a fountain pen, a tubular housing having a pen at one end, and ink storage means in said housing in communication with said pen, said ink storage means comprising a spirally coiled strip forming a storage body, said strip being formed with protuberant webs whereby adjacent convolutions of the storage body formed by said strips are radially spaced from each other for flatter through-passages, said storage body thereby increasing in capillarity in the axial and radial directions toward said pen, said webs extending from edge to edge of said strip and being inclined to the direction of the length of said strip and having a greater pitch near the axis of said storage body than near the periphery thereof, the ratio of the spacing between adjacent webs in longitudinal direction of the web to the height of the web at the side of the web adjacent to rear end of the storage body being from about 5 to 1 to about 8 to 1 and at the opposite side of the web adjacent to the pen being about 8 to 1 to about 18 to 1.
Claim 3
Dependent Claim
26 words
A fountain pen according to claim 1 in which the radial spacing between adjacent convolutions of said storage body increases in the radially outward direction thereof.
Claim 4
Dependent Claim
47 words
A fountain pen according to claim 2 in which the distance between said web is formulated as d Square Root K1R + f1 (R) wherein R represents variable radius and K factors are constants such that the webs of adjacent convolutions are circumferentially offset from each other.
Claim 5
Dependent Claim
20 words
A fountain pen according to claim 1 in which said webs are from about 10 to 100 microns in height.
Claim 6
Dependent Claim
20 words
A fountain pen according to claim 1 in which said webs are from about 20 to 40 microns in height.
Claim 7
Dependent Claim
24 words
A fountain pen according to claim 1 in which said webs are formed by residual portions of a photosensitive lacquer deposited on said strip.
Claim 8
Dependent Claim
28 words
A fountain pen according to claim 1 in which said webs are polygonal and having distance between said webs formulated as d R X K2 + f2 (R).
Claim 9
Dependent Claim
20 words
A fountain pen according to claim 1 in which the end faces of said storage body are Connected to atmosphere.
Claim 10
Dependent Claim
26 words
A fountain pen according to claim 1 in which at least one of the axial and peripheral portions of said storage body is connected to atmosphere.
Claim 11
Dependent Claim
24 words
A fountain pen according to claim 1 in which at least the pen end of said storage body is formed as a frustoconical recess.
Claim 12
Dependent Claim
20 words
A fountain pen according to claim 1 which includes a tubular core member on which said storage body is mounted.
Claim 13
Dependent Claim
35 words
A fountain pen according to claim 1 which includes a tubular core member extending axially through said storage body and having radial apertures at the level of at least one end of said storage body.
Claim 14
Dependent Claim
29 words
A fountain pen according to claim 12 in which ink is adapted to be supplied to said storage body via at least one open end of said core member.
Claim 15
Dependent Claim
26 words
A fountain pen according to claim 12 in which one end of said tubular core member is in the form of an ink cartridge piercing point.
Claim 16
Dependent Claim
55 words
A fountain pen according to claim 1 which includes a tubular core member extending axially through said storage body and having radial apertures at the level of at least one end of said storage body, said tubular core member having axial ridges protuberant therefrom axially outwardly from said storage body and serving as locating elements.
Claim 17
Dependent Claim
53 words
A fountain pen according to claim 1 which includes an ink conducting body abutting at least the pen end of said storage body and provided with at least one capillary passage interconnecting the spaces between all convolutions of said storage body with said pen and also being provided with passages to the atmosphere.
Claim 18
Dependent Claim
22 words
A fountain pen according to claim 16 in which said capillary passage is wedge shaped and increases in capillarity toward said pen.
Claim 19
Dependent Claim
35 words
A fountain pen according to claim 1 which includes an ink conductor body at each end of said storage body, and resilient means clamping said ink conductor bodies against the ends of said storage body.
Claim 20
Dependent Claim
16 words
A fountain pen according to claim 18 in which said resilient means comprises resilient foam washers.
Claim 21
Dependent Claim
43 words
A fountain pen according to claim 1 which includes an ink conducting body abutting said storage body on the pen end thereof, said ink conducting body engaging the inside surface of said pen and locating said pen relative to the ink conducting body.
Claim 22
Dependent Claim
29 words
A fountain pen according to claim 1 in which each said web is in the form of a series of elongated protuberance arranged in axial alignment in spaced relation.
Claim 23
Dependent Claim
25 words
A fountain pen according to claim 21 in which the gaps between adjacent protuberances in each web are staggered from those in the adjacent webs.
References Cited (Backward Citations)
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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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |