US3978494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stylus assembly
Assignee: Unisys Corp
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Filing: 1975-11-13
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Granted: 1976-08-31
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Expires: 1995-11-13
Abstract
Abstract A structure and method of manufacture of a disposable stylus for use as a writing tip in a printer using electrosensitive papers. The stylus comprises a plurality of conductive wires embedded in a Teflon ribbon which is cut away exposing the ends and a portion of the middle. The ribbon is wrapped around a plastic form to provide two writing tips and a connector in one integral structure.
Inventors
- 👤 Alvin John Noker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:32
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/385; B41J2/425
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
A stylus for writing on electrosensitive paper, comprising in combination; support means a plurality of electrically conductive wires wrapped about said support means to form at least one writing tip extending from one end of the support means and an electrical connector at the other end of said support means, said support means comprising a relatively thin form with opposing flat surfaces having a plurality of grooves formed around one end and extending substantially halfway down each flat surface thereof for receiving individual ones of said plurality of wires.
Claim 2
Dependent Claim
89 words
A stylus for writing on electrosensitive paper, comprising in combination; support means a plurality of electrically conductive wires wrapped about said support means to form at least one writing tip extending from one end of the support means and an electrical connector at the other end of said support means, said support means comprising a relatively thin form with opposing flat surfaces having a plurality of grooves formed around one end and extending substantially halfway down each flat surface thereof for receiving individual ones of said plurality of wires.
Claim 3
Dependent Claim
46 words
A stylus according to claim 1, wherein said plurality of wires are embedded at each end in an electrically insulating ribbon for holding the wires in closely spaced parallel relationship leaving the ends of said wires and a length of the middle of said wires exposed.
Claim 4
Dependent Claim
79 words
A stylus according to claim 2, wherein said support means includes recessed portions in said flat surfaces at the end opposite from that containing said grooves, each of said recessed portions having abutments disposed at each side, said plurality of wires being wrapped around said form with part of each of the exposed lengths of wires disposed in a respective groove in said form and the remainder of the exposed middle length of wires housed in said recessed portions.
Claim 5
Dependent Claim
25 words
A stylus according to claim 3, wherein each of said ribbons are disposed in said recessed portions with their inner ends disposed against said abutments.
Claim 6
Dependent Claim
40 words
A stylus according to claim 4 wherein, a sleeve is recessed on said form covering the part of the middle length of the exposed wires disposed in said recessed portions and a portion of the inner length of said ribbons.
Claim 7
Dependent Claim
22 words
A stylus according to claim 5, wherein said form, said ribbons and said sleeve are all made of a plastic insulating material.
Claim 8
Dependent Claim
41 words
A stylus according to claim 6, wherein said wires disposed in said grooves protrude slightly from said grooves in the opposing flat surfaces of said form to permit electrical contact therewith when said stylus is plugged into a compatible electrical connector.
Claim 9
Dependent Claim
25 words
A stylus according to claim 7, wherein the ends of said plurality of wires extending from said ribbons are bent outwardly to form writing tips.
Claim 10
Dependent Claim
13 words
A stylus according to claim 8, wherein said wires are made of tungsten.
References Cited (Backward Citations)
US2966726A
Cited
US2966727A
Cited
US3340381A
Cited
US3478191A
Cited
US3578946A
Cited
US3862394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |