US3323743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ribbon spool
Assignee: Individual
•
Filing: 1965-09-27
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Granted: 1967-06-06
•
Expires: 1985-09-27
Abstract
No abstract record available.
Inventors
- 👤 Walter D Landgraf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:14
CPC Classifications
B; B41; B41J; B41J33/00; B41J33/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A RIBBON SPOOL FOR USE IN BUSINESS MACHINES OF THE TYPE HAVING A RIBBON DRIVING MECHANISM INCLUDING A SPOOL-RETAINING GROOVED SPINDLE AND A SPOOL DRIVE-REVERSE FLANGE ROTATIVE IN RESPONSE TO THE PRINTING OF TYPE CHARACTERS BY THE MACHINE, SAID SPOOL COMPRISING A PAIR OF RELATIVELY RIGID MOLDED PLASTIC COMPONENTS; EACH OF SAID COMPONENTS COMPRISING A FLANGE PORTION AND A HUB PROJECTING AXIALLY THEREFROM, THE HUB ASSOCIATED WITH A FIRST OF SAID COMPONENTS HAVING A GROOVED EXTERIOR SURFACE, THE HUB ASSOCIATED WITH THE SECOND OF SAID COMPONENTS HAVING AN OUTER DIAMETER SUFFICIENT TO PROVIDE AN INTERFERENCE FIT WITH AN AXIAL HOLE EXTENDING THROUGH THE FLANGE PORTION AND HUB OF SAID FIRST COMPONENT SO THAT SAID COMPONENTS ARE SECURELY JOINABLE TO FORM A DOUBLE FLANGE SPOOL, A PAIR
Claim 2
Dependent Claim
126 words
A RIBBON SPOOL FOR USE IN BUSINESS MACHINES OF THE TYPE HAVING A RIBBON DRIVING MECHANISM INCLUDING A SPOOL-RETAINING GROOVED SPINDLE AND A SPOOL DRIVE-REVERSE FLANGE ROTATIVE IN RESPONSE TO THE PRINTING OF TYPE CHARACTERS BY THE MACHINE, SAID SPOOL COMPRISING A PAIR OF RELATIVELY RIGID MOLDED PLASTIC COMPONENTS; EACH OF SAID COMPONENTS COMPRISING A FLANGE PORTION AND A HUB PROJECTING AXIALLY THEREFROM, THE HUB ASSOCIATED WITH A FIRST OF SAID COMPONENTS HAVING A GROOVED EXTERIOR SURFACE, THE HUB ASSOCIATED WITH THE SECOND OF SAID COMPONENTS HAVING AN OUTER DIAMETER SUFFICIENT TO PROVIDE AN INTERFERENCE FIT WITH AN AXIAL HOLE EXTENDING THROUGH THE FLANGE PORTION AND HUB OF SAID FIRST COMPONENT SO THAT SAID COMPONENTS ARE SECURELY JOINABLE TO FORM A DOUBLE FLANGE SPOOL, A PAIR
References Cited (Backward Citations)
US2483528A
Cited
US2880841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |