US3572954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing device
Assignee: Le Foyer et Cie
•
Filing: 1969-06-30
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Granted: 1971-03-30
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Expires: 1989-06-30
Abstract
Abstract A writing device with a tracing point comprises detachable head fitted with a writing member and ink conducting means so that when the head is mounted on the writing device ink is fed to said member enabling one to write with the same. The member is a nib or a ball.
Inventors
- 👤 Raymond Cheron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:31
CPC Classifications
B; B43; B43K; B43K5/00; B43K5/18; B43K7/00; B43K7/10; B43K7/105
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
71 words
A writing device comprising a writing instrument having a tracing point, ink reserve means connected to said point for capillary feed of ink thereto and a detachable head having a writing member and capillary ink conduction means adapted to cooperate with said point for the controlled feeding by capillarity of said writing member from said ink reserve means and via said point when said head is mounted over said tracing point.
Claim 2
Dependent Claim
71 words
A writing device comprising a writing instrument having a tracing point, ink reserve means connected to said point for capillary feed of ink thereto and a detachable head having a writing member and capillary ink conduction means adapted to cooperate with said point for the controlled feeding by capillarity of said writing member from said ink reserve means and via said point when said head is mounted over said tracing point.
Claim 3
Dependent Claim
16 words
A writing device as claimed in claim 1, in which said writing member is a nib.
Claim 4
Dependent Claim
42 words
A writing device as claimed in claim 2, wherein said conduction means comprises an ink feeding tongue in contact with said nib, said tongue including a leg with which the tracing point cooperates when the head is mounted over said tracing point.
Claim 5
Dependent Claim
49 words
A writing device as claimed in claim 2, wherein the nib is lined by an ink feeding tongue which is extended by a transverse leg covering a washer of porous material, said washer having a central orifice which is of a shape corresponding with that of the tracing point.
Claim 6
Dependent Claim
61 words
A writing device as claimed in claim 1, wherein said ink conduction means comprises a core having a bore adapted to cooperate with said tracing point, and further comprising a nib supported by said core and having slots establishing an ink communication between said bore and the zone of the surface of the conduit with which the nib is in contact.
Claim 7
Dependent Claim
19 words
A writing device as claimed in claim 5, wherein said slots comprise a radial longitudinal slot and oblique slots.
Claim 8
Dependent Claim
19 words
A writing device as claimed in claim 5, wherein the core has a middle longitudinal slot and transverse grooves.
Claim 9
Dependent Claim
15 words
A writing device as claimed in claim 1, wherein said writing member is a ball.
Claim 10
Dependent Claim
54 words
A writing device as claimed in claim 8, wherein said head comprises a stem of spongy material having a high coefficient of swelling in contact with the ball at its front end and the rear end of which is folded and in contact with said point when said head is mounted on said point.
Claim 11
Dependent Claim
29 words
A writing device as claimed in claim 1, wherein said writing instrument comprises a body and means at the rear part of said body to receive the detachable head.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |