US4189736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facsimile stylus assembly
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1977-08-29
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Granted: 1980-02-19
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Expires: 1997-08-29
Abstract
Abstract A facsimile stylus assembly comprises one or more electrical conductors which are completely enshrouded by an electrically insulating sheath except for one end of the conductors which terminates in an uninsulated surface so as to form an output electrode. In one specific embodiment, the sheath comprises an electrically insulating cable having opposed flat surfaces and a plurality of spring wires which are situated within the cable. The spring wires are parallel to and insulated from the conductors. The spring wires are curved to bias the stylus assembly against the document upon which the facsimile recording is to be made.
Inventors
- 👤 Fred A. DeFilipps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:12
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/06; G01D15/08; H; H04; H04N; H04N1/00; H04N1/024; H04N1/032
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
97 words
A stylus assembly for use in recording on a document, said stylus assembly comprising: an electrical conductor terminating at one extremity so as to form an output electrode surface adapted to mark a recording medium in response to an electrical potential between the conductor and the recording medium; an electrically insulating sheath extending to a plane substantially flush with said electrode surface; and elongated means comprising at least one spring wire and extending substantially parallel to said conductor coupled to said sheath said elongated means comprising a material having a higher modulus of elasticity than said conductor.
Claim 2
Dependent Claim
97 words
A stylus assembly for use in recording on a document, said stylus assembly comprising: an electrical conductor terminating at one extremity so as to form an output electrode surface adapted to mark a recording medium in response to an electrical potential between the conductor and the recording medium; an electrically insulating sheath extending to a plane substantially flush with said electrode surface; and elongated means comprising at least one spring wire and extending substantially parallel to said conductor coupled to said sheath said elongated means comprising a material having a higher modulus of elasticity than said conductor.
Claim 3
Dependent Claim
21 words
The stylus assembly of claim 1 wherein said conductor and said are curved to bias said stylus against said recording medium.
Claim 4
Dependent Claim
23 words
The stylus assembly of claim 2 wherein said assembly further comprises an input electrode electrically connected to the other extremity of said conductor.
Claim 5
Dependent Claim
24 words
The stylus assembly of claim 3 wherein said sheath comprises an insulating cable having opposing flat surfaces, said conductor being encapsulated between said surfaces.
Claim 6
Dependent Claim
34 words
The stylus assembly of claim 4 wherein said input electrode comprises an electrically conductive clip having first and second projecting arm, each of said arms grasping one of said opposed surfaces of said sheath.
Claim 7
Dependent Claim
95 words
A stylus assembly for use in recording on a document, said stylus assembly comprising: an electrical conductor terminating at one extremity so as to form an output electrode surface adapted to mark a recording medium in response to an electrical potential between the conductor and the recording medium; an electrically insulating sheath surrounding said conductor; and elongated spring means extending through said sheath in a direction generally parallel with said spring means such that said sheath substantially surrounds said conductor, said elongated means comprising a material having a higher modulus of elasticity than said conductor.
Claim 8
Dependent Claim
95 words
A stylus assembly for use in recording on a document, said stylus assembly comprising: an electrical conductor terminating at one extremity so as to form an output electrode surface adapted to mark a recording medium in response to an electrical potential between the conductor and the recording medium; an electrically insulating sheath surrounding said conductor; and elongated spring means extending through said sheath in a direction generally parallel with said spring means such that said sheath substantially surrounds said conductor, said elongated means comprising a material having a higher modulus of elasticity than said conductor.
Claim 9
Dependent Claim
16 words
The stylus assembly of claim 6 wherein said conductor and said elongated spring means are curved.
Claim 10
Dependent Claim
27 words
The stylus assembly of claim 7 wherein said elongated spring means comprises a pair of elongated members generally parallel with and on opposite sides of said conductor.
Claim 11
Dependent Claim
28 words
The stylus assembly of claim 8 wherein said sheath comprises an insulating cable having opposing flat surfaces, said members and said conductor being substantially aligned between said surfaces.
Claim 12
Dependent Claim
121 words
A stylus assembly for use in recording on a document, said stylus assembly comprising: an electrically insulating sheath having a longitudinal dimension adapted to extend toward a recording medium having an exterior surface at the periphery of said sheath; an electrical conductor extending longitudinally through said sheath and terminating one extremity so as to form an output electrode surface adapted to mark a recording medium in response to an electrical potential between the conductor and the recording medium; and elongated spring means extending longitudinally through said sheath so as to be positioned between said conductor and a portion of the exterior surface of said sheath said elongated spring means having a material having a higher modulus of eleasticity than said conductor.
Claim 13
Dependent Claim
121 words
A stylus assembly for use in recording on a document, said stylus assembly comprising: an electrically insulating sheath having a longitudinal dimension adapted to extend toward a recording medium having an exterior surface at the periphery of said sheath; an electrical conductor extending longitudinally through said sheath and terminating one extremity so as to form an output electrode surface adapted to mark a recording medium in response to an electrical potential between the conductor and the recording medium; and elongated spring means extending longitudinally through said sheath so as to be positioned between said conductor and a portion of the exterior surface of said sheath said elongated spring means having a material having a higher modulus of eleasticity than said conductor.
Claim 14
Dependent Claim
19 words
The stylus assembly of claim 10 wherein said conductor is curved to bias said stylus against said recording medium.
Claim 15
Dependent Claim
29 words
The stylus assembly of claim 10 wherein said sheath comprises an insulating cable having opposing flat surfaces, said conductor and said elongated spring means being encapsulated between said surfaces.
Claim 16
Dependent Claim
24 words
The stylus assembly of claim 12 wherein said elongated spring means comprises a pair of elongated spring members on opposite sides of said conductor.
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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) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |