US3971042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing apparatus having wear resistant material
Assignee: Xerox Corp
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Filing: 1972-10-12
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Granted: 1976-07-20
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Expires: 1992-10-12
Abstract
Abstract A stylus and its method of manufacture for forming an image on the recording medium of a printing apparatus having the structure of a substrate upon which a plurality of conductors are etched or printed. The writing edge of the stylus containing the pin electrodes formed by the conductors has a chip of wear resistant or hard material laminated to the substrate to prevent excessive wear of the pin electrodes. Alternately, the substrate itself is made of a wear resistant or hard material to prevent wear of the pin electrodes.
Inventors
- 👤 Howard D. Ring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:39
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/06; G03; G03G; G03G15/00; G03G15/22; G03G15/32; G03G15/321; G03G15/325
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A stylus for forming images on the recording medium of a printing apparatus comprising: a base adapted to be inserted in a connector socket of said printing apparatus to receive control signals, one end of said stylus mounted on said base, a writing edge formed at the free end of said stylus, and a chip of wear resistant material attached to the free end of said stylus initially on the side opposite from the writing edge whereby said writing edge is eventually protected from excessive wear in sweeping across said recording medium.
Claim 2
Dependent Claim
92 words
A stylus for forming images on the recording medium of a printing apparatus comprising: a base adapted to be inserted in a connector socket of said printing apparatus to receive control signals, one end of said stylus mounted on said base, a writing edge formed at the free end of said stylus, and a chip of wear resistant material attached to the free end of said stylus initially on the side opposite from the writing edge whereby said writing edge is eventually protected from excessive wear in sweeping across said recording medium.
References Cited (Backward Citations)
US2346675A
Cited
US3267485A
Cited
US3291276A
Cited
US3478191A
Cited
US3644930A
Cited
US3694574A
Cited
US3673600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |