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US3172352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing hammer assembly
Assignee: Ricoh Printing Systems America Inc
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Filing: 1963-05-13
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Granted: 1965-03-09
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 Clifford J Helms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:59
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/26; B41J9/38; B41J9/02; B41J9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A HAMMER ASSEMBLY COMPRISING A SHANK; ELECTRICALLY ENERGIZABLE MEANS SECURED TO SAID SHANK FOR GENERATING A FIRST MAGNETIC FIELD; A SUPPORT BASE: A PAIR OF ELECTRICALLY CONDUCTIVE SUPPORT MEMBERS SEUCRED BETWEEN SAID SUPPORT BASE AN SAID SHANK; CONDUCTIVE MEANS CONNECTING SAID SUPPORT MEMBERS TO SAID ELECTRICALLY ENERGIZABLE MEANS; AND MEANS FOR ESTABLISHING A SECOND MAGNETIC FIELD ADAPTED TO INTERACT WITH SAID FIRST MAGNETIC FIELD GENERATING MEANS.
Claim 2
Dependent Claim
66 words
A HAMMER ASSEMBLY COMPRISING A SHANK; ELECTRICALLY ENERGIZABLE MEANS SECURED TO SAID SHANK FOR GENERATING A FIRST MAGNETIC FIELD; A SUPPORT BASE: A PAIR OF ELECTRICALLY CONDUCTIVE SUPPORT MEMBERS SEUCRED BETWEEN SAID SUPPORT BASE AN SAID SHANK; CONDUCTIVE MEANS CONNECTING SAID SUPPORT MEMBERS TO SAID ELECTRICALLY ENERGIZABLE MEANS; AND MEANS FOR ESTABLISHING A SECOND MAGNETIC FIELD ADAPTED TO INTERACT WITH SAID FIRST MAGNETIC FIELD GENERATING MEANS.
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) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |