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US3289575A Expired / Lapsed US ⏱️ 0.0 years remaining

High speed printer hammer assembly

Assignee: Tracor Aerospace Austin Inc
•
Filing: 1964-01-08
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Granted: 1966-12-06
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Expires: 1984-01-08
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Abstract

No abstract record available.

Inventors

  • 👤 Carl I Wassermann

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 03:47
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/02; B41J9/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 162 words
IN A HIGH SPEED PRINTER, THE COMBINATION OF: A PLURALITY OF HAMMERS EACH COMPRISING A LINEAR BAR-LIKE ELEMENT, AT LEAST TWO LEAF SPRINGS ATTACHED TO EACH OF SAID ELEMENTS, AND MOUNTING MEANS FOR SAID SPRINGS ORIENTED TO RESILIENTLY HOLD SAID LINEAR ELEMENT DIRECTED TOWARD A PREDETERMINED PRINTING AREA ON A HIGH SPEED CHARACTER DRUM; AN ACTUATOR FOR EACH OF SAID HAMMERS COMPRISING THREE ARMS DIRECTED OUTWARDLY FROM TWO FLAT MUTUALLY PERPENDICULAR SURFACES, TWO CROSSED FLAT SPRINGS ONE OF WHICH IS SECURED TO EACH OF SAID SURFACES, MOUNTING SURFACES FOR EACH OF SAID SPRINGS AT RIGHT ANGLES TO EACH OTHER, WHEREIN THE FIRST OF SAID ARMS IS ADAPTED TO BE MAGNETICALLY ATTRACTED BY AN ELECTROMAGNET, THE SECOND OF SAID ARMS IS ADAPTED TO STRIKE ONE END OF ONE OF SAID HAMMERS AND THE THIRD OF SAID ARMS IS ADAPTED TO BEAR AGAINST AN ADJUSTABLE STOP TO CONTROL THE GAP BETWEEN THE FIRST SAID ARM AND ITS ATTRACTING ELECTROMAGNET WHEN SAID MAGNET IS DEENERGIZED.
Claim 2
Dependent Claim 162 words
IN A HIGH SPEED PRINTER, THE COMBINATION OF: A PLURALITY OF HAMMERS EACH COMPRISING A LINEAR BAR-LIKE ELEMENT, AT LEAST TWO LEAF SPRINGS ATTACHED TO EACH OF SAID ELEMENTS, AND MOUNTING MEANS FOR SAID SPRINGS ORIENTED TO RESILIENTLY HOLD SAID LINEAR ELEMENT DIRECTED TOWARD A PREDETERMINED PRINTING AREA ON A HIGH SPEED CHARACTER DRUM; AN ACTUATOR FOR EACH OF SAID HAMMERS COMPRISING THREE ARMS DIRECTED OUTWARDLY FROM TWO FLAT MUTUALLY PERPENDICULAR SURFACES, TWO CROSSED FLAT SPRINGS ONE OF WHICH IS SECURED TO EACH OF SAID SURFACES, MOUNTING SURFACES FOR EACH OF SAID SPRINGS AT RIGHT ANGLES TO EACH OTHER, WHEREIN THE FIRST OF SAID ARMS IS ADAPTED TO BE MAGNETICALLY ATTRACTED BY AN ELECTROMAGNET, THE SECOND OF SAID ARMS IS ADAPTED TO STRIKE ONE END OF ONE OF SAID HAMMERS AND THE THIRD OF SAID ARMS IS ADAPTED TO BEAR AGAINST AN ADJUSTABLE STOP TO CONTROL THE GAP BETWEEN THE FIRST SAID ARM AND ITS ATTRACTING ELECTROMAGNET WHEN SAID MAGNET IS DEENERGIZED.

References Cited (Backward Citations)

US3012499A Cited
US3041964A Cited
US3144821A Cited
US3164084A Cited
US3145650A Cited
US3172352A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-12-05 1970-06-06 1970-12-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-12-05 1974-06-06 1974-12-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-12-05 1978-06-06 1978-12-06 $7700.00 Window Closed / Lapsed

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