Patent US3871776A successfully refreshed from Google Patents.
US3871776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing pens
Assignee: Individual
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Filing: 1974-03-08
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Granted: 1975-03-18
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Expires: 1994-03-08
Abstract
Abstract A pen for varying the width of the line being written, free from nib separating movements, employs a flexible embouchure means to constitute a writing tip. The embouchure is characterized primarily in that it utilizes a pair of shaped lips to constitute nibs, forming a substantially curvate capillary mouth to effect the transfer of ink onto a writing surface. When pressure is applied to the tip of the pen, the lips are transversely flexed, reforming thereby the mouth of the pen into a cross slit in the plane of writing contact to produce an ink track of corresponding breadth.
Inventors
- 👤 Ben Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:48
CPC Classifications
B; B43; B43K; B43K17/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
143 words
A pen having a pair of contiguous nibs defining an intervening ink feeding channel and terminating at their forward ends in a flexible writing tip wherein the improvement comprises, an embouchure to constitute means for tracking ink, said embouchure having a pair of shaped lips constituting the respective forward ends of said nibs, said lips being disposed in progressive-spring contact defining a capillary mouth for passing ink therethrough, said lips being generally turned upwardly from the point of common contact in the absence of writing pressure on the pen, means resiliently supporting said lips for movements together in response to writing pressure thereon and for reforming thereby said mouth into a cross-slit for ink feeding action, said lips constituting substantially a progressive-spring means responsive to hand pressure for controlling the spreading movements of said mouth whereby a line may drawn of corresponding breadth.
Claim 2
Dependent Claim
143 words
A pen having a pair of contiguous nibs defining an intervening ink feeding channel and terminating at their forward ends in a flexible writing tip wherein the improvement comprises, an embouchure to constitute means for tracking ink, said embouchure having a pair of shaped lips constituting the respective forward ends of said nibs, said lips being disposed in progressive-spring contact defining a capillary mouth for passing ink therethrough, said lips being generally turned upwardly from the point of common contact in the absence of writing pressure on the pen, means resiliently supporting said lips for movements together in response to writing pressure thereon and for reforming thereby said mouth into a cross-slit for ink feeding action, said lips constituting substantially a progressive-spring means responsive to hand pressure for controlling the spreading movements of said mouth whereby a line may drawn of corresponding breadth.
Claim 3
Dependent Claim
18 words
A pen as claimed in claim 1, wherein said lips constitute substantially a circle and an osculating circle.
Claim 4
Dependent Claim
18 words
A pen as claimed in claim 1, wherein said lips constitute substantially a conic and an osculating conic.
Claim 5
Dependent Claim
21 words
A pen as claimed in claim 1, wherein said lips constitute substantially respective segments of a conic and an osculating conic.
Claim 6
Dependent Claim
119 words
A pen as claimed in claim 1, wherein said pen comprises a quill pen body, said pen body having a concurrent body portion bent about longitudinal fold axes to form a pair of integral nibs, said nibs being disposed in osculating relationship and terminating at their forward ends in respective lips to form an embouchure writing tip, said nibs defining an axial through passage and an intervening capillary channel communicating therewith to constitute respectively an ink chamber and means for feeding ink to said tip, said fold axes resiliently supporting said nibs for osculating movements with the application of writing pressure thereon and for simultaneously distending by progressive-spring means said embouchure tip to produce a line of corresponding breadth.
Claim 7
Dependent Claim
46 words
A pen as claimed in claim 5, wherein said tip defines an osculating point for tracking ink therewith and a pair of substantially arcuately-tapered openings symmetrically disposed on each side of said osculating point to constitute vent means facilitating the passage of ink and air therethrough.
Claim 8
Dependent Claim
28 words
A pen as claimed in claim 5, wherein said embouchure tip includes a tongue, said tongue being disposed between said nibs for regulating the flow of ink therethrough.
Claim 9
Dependent Claim
25 words
A pen as claimed in claim 5, wherein said channel tapers transversely and longitudinally toward the tip of the pen at all permissable writing pressures.
Claim 10
Dependent Claim
30 words
A pen as claimed in claim 5, wherein said nibs constitute substantially superposed segments of a cylinder and said lips constitute substantially segments of a conic and an osculating conic.
Claim 11
Dependent Claim
138 words
A pen as claimed in claim 5, wherein said pen comprises a circumferentially-discontinuous cylindrical pen body, said pen body having symmetrical wing segments at the forward end thereof bent about respective fold axes to form with the side opposite thereto respective upper and lower nibs, said nibs being disposed in osculating contact and defining an intervening ink feeding channel, said upper nib having a longitudinal slit superjacent to said channel, said lower nib having a tongue extending upwardly and forwardly to engage and secure said wing segments to prevent the separation thereof under pressure, said nibs terminating in respective lips to constitute an embouchure writing tip, said fold axes resiliently supporting said lips for movements together in response to pressure thereon and for distending by progressive-spring means said tip to vary the width of the line being written.
Claim 12
Dependent Claim
24 words
A pen as claimed in claim 10, wherein said embouchure includes a tongue, said tongue having a plurality of compartments for retaining ink therein.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |