USRE27175E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print hammer unit for high speed printers
Assignee: —
•
Filing: 1968-04-29
•
Granted: 1971-09-21
•
Expires: 1988-04-29
Abstract
Abstract PRINTING APPARATUS FOR A HIGH SPEED PRINTER HAVING AN ELONGATED PRINT HAMMER WITH AN UPSTANDING ARMATURE PORTION AT THE END REMOTE FROM THE PRINT LINE AND A PAIR OF PARALLEL FLAT SPRINGS SUPPORTING THE PRINT HAMMER. AN ELECTROMAGNET HAVING A HOLD WINDING FOR PRODUCING MAGNETIC FLUX TO HOLD THE PRINT HAMMER IN A RETRACTED POSITION AND MEANS FOR REDUCING THE MAGNETIC FLUX BELOW THE HOLDING VALUE TO PERMIT THE SUPPORT SPRINGS TO ACTUATE THE HAMMER TO A PRINTING POSITION.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:45
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/26; B41J9/36; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |