Patent US3355324A successfully refreshed from Google Patents.
US3355324A
Expired / Lapsed
US
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Method of cleaning ink from rubber dies
Assignee: Covington Manufacturing Corp
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Filing: 1964-01-24
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Granted: 1967-11-28
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Expires: 1984-01-24
Abstract
No abstract record available.
Inventors
- 👤 Catzen Robert William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:57
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/06; B41F; B41F35/00; B41F35/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD OF CLEANING AND REMOVING INK FROM RUBBER PRINTING DIES WITHOUT THE NEED FOR MECHANICAL SCRUBBING OR BRUSHES, SAID METHOD COMPRISING THE STEPS OF: (A) SUPPORTING THE DIES WITH THE PRINTING FACES THEREOF DIRECTED UPWARDLY, ON AN ARCUATE FORAMINOUS SURFACE; (B) INTERMITTENTLY SUBJECTING THE PRINTING FACES ON THE DIES TO A SPRAY OF SODIUM SILICATE CLEANING SOLUTION FOR A FIRST GIVEN PERIOD OF TIME OF SUFFICIENT LENGTH SUCH THAT SAID DIES ARE CLEANED AND EFFECTIVELY FREE OF INK WHEN SUBJECTED TO STEPS (C) AND (D); (C) THEN FOR A SECOND GIVEN PERIOD OF TIME LESS THAN SAID FIRST GIVEN PERIOD OF TIME, INTERMITTENTLY SUBJECTING THE PRINTING FACES ON THE DIES TO A WATER SPRAY; (D) THEN FOR A THIRD GIVEN PERIOD OF TIME LESS THAN SAID FIRST GIVEN PERIOD OF TIME, INTERMITRTENTLY SUBJECTING THE PRINTING FACES ON THE DIES TO AN AIR BLAST.
Claim 2
Independent Claim
144 words
A METHOD OF CLEANING AND REMOVING INK FROM RUBBER PRINTING DIES WITHOUT THE NEED FOR MECHANICAL SCRUBBING OR BRUSHES, SAID METHOD COMPRISING THE STEPS OF: (A) SUPPORTING THE DIES WITH THE PRINTING FACES THEREOF DIRECTED UPWARDLY, ON AN ARCUATE FORAMINOUS SURFACE; (B) INTERMITTENTLY SUBJECTING THE PRINTING FACES ON THE DIES TO A SPRAY OF SODIUM SILICATE CLEANING SOLUTION FOR A FIRST GIVEN PERIOD OF TIME OF SUFFICIENT LENGTH SUCH THAT SAID DIES ARE CLEANED AND EFFECTIVELY FREE OF INK WHEN SUBJECTED TO STEPS (C) AND (D); (C) THEN FOR A SECOND GIVEN PERIOD OF TIME LESS THAN SAID FIRST GIVEN PERIOD OF TIME, INTERMITTENTLY SUBJECTING THE PRINTING FACES ON THE DIES TO A WATER SPRAY; (D) THEN FOR A THIRD GIVEN PERIOD OF TIME LESS THAN SAID FIRST GIVEN PERIOD OF TIME, INTERMITRTENTLY SUBJECTING THE PRINTING FACES ON THE DIES TO AN AIR BLAST.
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |