US2955027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the deburring of zinc-base die castings
Assignee: Individual
•
Filing: 1957-08-07
•
Granted: 1960-10-04
•
Expires: 1977-08-07
Abstract
No abstract record available.
Inventors
- 👤 Isaac L Newell
- 👤 Ernest A Walen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:25
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23F1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A METHOD FOR DEBURRING ZINC-BASE DIE CASTINGS CONSISTING OF TREATING THE DIE CASTINGS WITH AN AQUEOUS ACID BATH CONTAINING, IN EACH 1 TO 11 LITERS IN SOLUTION, 110 TO 350 GRAMS OF A CHROMATE RADICAL, 31 TO 150 GRAMS OF A NITRATE RADICAL, 28 TO 120 GRAMS OF RADICAL TAKEN FROM THE GROUP OF WEAK ACID RADICALS CONSISTING OF BORATES, FORMATES, ACETATES, PROPIONATES AND BUTYRATES, 32 TO 180 GRAMS OF A RADICAL TAKEN FROM THE GROUP OF FLUORINE COMPOUNDS CONSISTING OF FLUORIDES, FLUOBORATES AND FLUOSILICATES, 16 TO 30 GRAMS OF A RADICAL TAKEN FROM THE GROUP OF STRONG MINERAL ACID RADICALS CONSISTING OF SULPHATES, PHOSPHATES AND SULFAMATES, AT LEAST 90% OF THE RADICALS TO COME FROM ACIDS AND THE REMAINDER WATER, THE TREATMENT TIME BEING FOR A PERIOD BETWEEN 5 SECONDS AND 10 MINUTES AT A BATH TEMPERATURE BETWEEN 60*F. AND 165*F. AND THEN RINSING THE CASTINGS WITH WATER.
Claim 2
Independent Claim
149 words
A METHOD FOR DEBURRING ZINC-BASE DIE CASTINGS CONSISTING OF TREATING THE DIE CASTINGS WITH AN AQUEOUS ACID BATH CONTAINING, IN EACH 1 TO 11 LITERS IN SOLUTION, 110 TO 350 GRAMS OF A CHROMATE RADICAL, 31 TO 150 GRAMS OF A NITRATE RADICAL, 28 TO 120 GRAMS OF RADICAL TAKEN FROM THE GROUP OF WEAK ACID RADICALS CONSISTING OF BORATES, FORMATES, ACETATES, PROPIONATES AND BUTYRATES, 32 TO 180 GRAMS OF A RADICAL TAKEN FROM THE GROUP OF FLUORINE COMPOUNDS CONSISTING OF FLUORIDES, FLUOBORATES AND FLUOSILICATES, 16 TO 30 GRAMS OF A RADICAL TAKEN FROM THE GROUP OF STRONG MINERAL ACID RADICALS CONSISTING OF SULPHATES, PHOSPHATES AND SULFAMATES, AT LEAST 90% OF THE RADICALS TO COME FROM ACIDS AND THE REMAINDER WATER, THE TREATMENT TIME BEING FOR A PERIOD BETWEEN 5 SECONDS AND 10 MINUTES AT A BATH TEMPERATURE BETWEEN 60*F. AND 165*F. AND THEN RINSING THE CASTINGS WITH WATER.
References Cited (Backward Citations)
US2186579A
Cited
US2434021A
Cited
US2497905A
Cited
US2590927A
Cited
US2613165A
Cited
US2760890A
Cited
US2904414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |