US2748549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating relatively small metallic parts
Assignee: J N TUTTLE Inc
•
Filing: 1953-06-17
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Granted: 1956-06-05
•
Expires: 1973-06-17
Abstract
No abstract record available.
Inventors
- 👤 James N Tuttle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:25
CPC Classifications
C; C23; C23C; C23C22/00; C25; C25D; C25D17/00; C25D17/16; C25D17/18; C25D17/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN THE METHOD OF TREATING A MASS OF RELATIVELY SMALL METALLIC PARTS TO PRODUCE A CORROSION-RESISTANT CHEMICAL COATING, THE STEPS WHICH COMPRISE DISPOSING SAID PARTS IN AN ANNULAR CHAMBER OF A DRUM DEFINED BY CONCENTRIC INNER AND OUTER FORAMINOUS WALLS, THE PARTS BEING PACKED SO THAT THEY HAVE A SLIGHT DEGREE OF FREEDOM OF MOVEMENT, BUT INSUFFICIENT TO UNDERGO TUMBLING ACTION, THEREBY INSURING A BALANCED LOAD, IMMERSING SAID DRUM AND PARTS INTO A CHEMICAL TREATING SOLUTION REACTIVE WITH SAID PARTS TO PRODUCE A CORROSION-RESISTANT COATING, AND ROTATING SAID DRUM SO AS TO CAUSE SAID TREATING SOLUTION TO MIGATE THROUGH SAID FORAMINOUS WALLS AND UNIFORMLY REACT WITH SAID PARTS.
Claim 2
Dependent Claim
108 words
IN THE METHOD OF TREATING A MASS OF RELATIVELY SMALL METALLIC PARTS TO PRODUCE A CORROSION-RESISTANT CHEMICAL COATING, THE STEPS WHICH COMPRISE DISPOSING SAID PARTS IN AN ANNULAR CHAMBER OF A DRUM DEFINED BY CONCENTRIC INNER AND OUTER FORAMINOUS WALLS, THE PARTS BEING PACKED SO THAT THEY HAVE A SLIGHT DEGREE OF FREEDOM OF MOVEMENT, BUT INSUFFICIENT TO UNDERGO TUMBLING ACTION, THEREBY INSURING A BALANCED LOAD, IMMERSING SAID DRUM AND PARTS INTO A CHEMICAL TREATING SOLUTION REACTIVE WITH SAID PARTS TO PRODUCE A CORROSION-RESISTANT COATING, AND ROTATING SAID DRUM SO AS TO CAUSE SAID TREATING SOLUTION TO MIGATE THROUGH SAID FORAMINOUS WALLS AND UNIFORMLY REACT WITH SAID PARTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |