US3578136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter printing means for symbols in coded inks
Assignee: Wyeth Holdings LLC
•
Filing: 1969-09-11
•
Granted: 1971-05-11
•
Expires: 1989-09-11
Abstract
Abstract Symbols in coded inks in which the code in the presence or absence of photoluminescent constituents is effected on a modified teletypewriter mechanism by clipping onto the back of a standard teletypewriter type head a portion of ribbon with separate areas registering with the type heads, each area being impregnated with a coded ink having the proper presence or absence of coded photoluminescent components corresponding to the symbol of the type head. The areas are separated from each other somewhat, as is always the case with the teletypewriter head, and so contamination of the coded ink impregnated in one area with that in another area cannot take place. The teletypewriter head is provided with a clip frame and the inked ribbon portions are in suitable disposable frames which slide into the clip and are self-registering.
Inventors
- 👤 Robert H Postal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:45
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/12; G06K1/121; G06K1/123; B; B41; B41J; B41J3/00; B41J3/44; B41J3/50; B41J3/51
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
177 words
In a teletypewriter provided with keyboard and keys, a platen, a typing head movable to bring a predetermined typing head corresponding to the particular key depressed into printing position, and a hammer to cause this type head to move forward against the platen, the modification which comprises: a. a removable holder attachable onto the type box of the teletypewriter and extending down the backface of said type box, the frame being provided with a slot and aligning edges; and b. a separate frame carrying ribbon and mating with the aligning edges of the slot in said holder, the frame carrying a ribbon with discrete areas each with its own particular ink corresponding to a particular symbol, the ink having coding components of photoluminescent constituents and each area having the proper code for the particular symbol whereby when the ribbon frame is inserted, each area with its different coded ink is aligned with the corresponding typeface in the teletypewriter type box and typing results in the coded ink corresponding to the particular symbol of the particular key struck.
Claim 2
Dependent Claim
177 words
In a teletypewriter provided with keyboard and keys, a platen, a typing head movable to bring a predetermined typing head corresponding to the particular key depressed into printing position, and a hammer to cause this type head to move forward against the platen, the modification which comprises: a. a removable holder attachable onto the type box of the teletypewriter and extending down the backface of said type box, the frame being provided with a slot and aligning edges; and b. a separate frame carrying ribbon and mating with the aligning edges of the slot in said holder, the frame carrying a ribbon with discrete areas each with its own particular ink corresponding to a particular symbol, the ink having coding components of photoluminescent constituents and each area having the proper code for the particular symbol whereby when the ribbon frame is inserted, each area with its different coded ink is aligned with the corresponding typeface in the teletypewriter type box and typing results in the coded ink corresponding to the particular symbol of the particular key struck.
Claim 3
Dependent Claim
22 words
A modified teletypewriter according to claim 1 in which the ribbon-containing frame is provided with a tab or handle at the top.
Claim 4
Dependent Claim
43 words
A modified teletypewriter according to claim 1 in which the areas on the ribbon in the different coded inks are separated from each other with uninked zones so that contamination of one area having one coded ink with that from another is impossible.
Claim 5
Dependent Claim
43 words
A modified teletypewriter according to claim 2 in which the areas on the ribbon in the different coded inks are separated from each other with uninked zones so that contamination of one area having one coded ink with that from another is impossible.
Claim 6
Dependent Claim
34 words
A modified teletypewriter according to claim 1 in which the inked areas on the ribbon in the frame carry in addition to the coding components a pigment which is visible under visible light illumination.
Claim 7
Dependent Claim
34 words
A modified teletypewriter according to claim 2 in which the inked areas on the ribbon in the frame carry in addition to the coding components a pigment which is visible under visible light illumination.
References Cited (Backward Citations)
US3205996A
Cited
US3481446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |