Patent US3309989A successfully refreshed from Google Patents.
US3309989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print hammer
Assignee: General Electric Co
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Filing: 1965-09-16
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Granted: 1967-03-21
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Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Solheim Karsten
- 👤 Duckett Arlie Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:34
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/02; B41J9/127; Y; Y10; Y10S; Y10S101/00; Y10S101/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A PRINT HAMMER FOR USE IN A PRINTER HAVING A PRINTING MEDIUM LOCATED BETWEEN THE PRINT HAMMER AND A ROTATABLE PRINT DRUM, SAID PRINTER HAVING MEANS FOR IMPINGING SAID HAMMER ONTO SAID MEDIUM TO IMPACT THE MEDIUM AGAINST A PRINTING SURFACE OF A PRINT CHARACTER FORMED ON THE DRUM, SAID HAMMER COMPRISING: A MAIN BODY MEMBER; A HAMMER HEAD INCLUDING A SURFACE ADAPTED TO STRIKE SAID MEDIUM AND TO IMPACT SAID MEDIUM AGAINST THE PRINTING SURFACE OF SAID CHARACTER; AND A RESILIENTLY FLEXIBLE PORTION, SAID PORTION SERVING TO CONNECT SAID HEAD TO ONE END OF SAID MEMBER, SAID PORTION BEING ASYMMETRICALLY CONNECTED TO SAID HEAD TO PROVIDE A PORTION WHICH FLEXES WHEN THE SURFACE OF SAID HEAD IMPACTS THE MEDIUM AGAINST THE SURFACE OF SAID CHARACTER TO EFFECT PARALLEL ALIGNMENT OF THE TWO SURFACES, SAID PORTION CAUSING SAID HEAD TO RETURN TO ITS ORIGINAL POSITION RELATIVE TO SAID MEMBER WHEN THE SURFACE OF SAID HEAD NO LONGER MAKES CONTACT WITH THE MEDIUM.
Claim 2
Dependent Claim
162 words
A PRINT HAMMER FOR USE IN A PRINTER HAVING A PRINTING MEDIUM LOCATED BETWEEN THE PRINT HAMMER AND A ROTATABLE PRINT DRUM, SAID PRINTER HAVING MEANS FOR IMPINGING SAID HAMMER ONTO SAID MEDIUM TO IMPACT THE MEDIUM AGAINST A PRINTING SURFACE OF A PRINT CHARACTER FORMED ON THE DRUM, SAID HAMMER COMPRISING: A MAIN BODY MEMBER; A HAMMER HEAD INCLUDING A SURFACE ADAPTED TO STRIKE SAID MEDIUM AND TO IMPACT SAID MEDIUM AGAINST THE PRINTING SURFACE OF SAID CHARACTER; AND A RESILIENTLY FLEXIBLE PORTION, SAID PORTION SERVING TO CONNECT SAID HEAD TO ONE END OF SAID MEMBER, SAID PORTION BEING ASYMMETRICALLY CONNECTED TO SAID HEAD TO PROVIDE A PORTION WHICH FLEXES WHEN THE SURFACE OF SAID HEAD IMPACTS THE MEDIUM AGAINST THE SURFACE OF SAID CHARACTER TO EFFECT PARALLEL ALIGNMENT OF THE TWO SURFACES, SAID PORTION CAUSING SAID HEAD TO RETURN TO ITS ORIGINAL POSITION RELATIVE TO SAID MEMBER WHEN THE SURFACE OF SAID HEAD NO LONGER MAKES CONTACT WITH THE MEDIUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |