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US2943797A
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Apparatus for treating surfaces
Assignee: Neilson Chemical Co
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Filing: 1956-06-04
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Granted: 1960-07-05
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Expires: 1976-06-04
Abstract
No abstract record available.
Inventors
- 👤 Shirley W Neilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:53
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/02; B08B3/026; B05; B05B; B05B12/00; B05B12/14; B05B12/1418; B05B7/00; B05B7/24; B05B7/26; B05B7/28; B05B7/32; B08B2203/00; B08B2203/02; B08B2203/0282; B08B2230/00; B08B2230/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
APARATUS FOR CHEMICALLY TREATING METAL SURFACES TO APPLY AN ADHERENT PHOSPHATE COATING WHICH COMPRISES A DELIVERY CONDUIT TERMINATING IN A MANUALLY DIRIGIBLE DISCHARGE NOZZLE FOR DIRECTING THE STREAM FLOWING THEREFROM AGAINST AND OVER THE SURFACE OF THE METAL, A STREAM SUPPLY CONDUIT CONNECTED TO SAID DELIVERY CONDUIT FOR INTRODUCING A CONSTANT UNIFORM FLOW OF STEAM, A PLURALITY OF AUZILIARY SUPPLY CONDUITS CONNECTED TO SAID DELIVERY CONDUIT BETWEEN SAID STREAM SUPPLY AND SAID NOZZLE, A SEPARATE CHEMICAL-CONTAINING TANK FOR EACH AUXILIARY CONDUIT, A PRE-SET METERING DEVICE BETWEEN EACH CHEMICAL TANK AND SAID DELIVERY CONDUIT, A SEPARATE CLOSABLE SUPPLY VALUE FOR EACH AUXILIARY CONDUIT AND MEANS MANUALLY OPERABLE FROM SAID MANUALLY DIRIGIBLE DISCHARGE NOZZLE FOR REMOTELY OPERATING EACH OF SAID SUPPLY VALVES TO THEREBY SELECTIVELY DELIVER THE CHEMICALS FROM EACH TANK INTO SAID STREAM IN EXACT PREDETERMINED PORTIONS.
Claim 2
Dependent Claim
136 words
APARATUS FOR CHEMICALLY TREATING METAL SURFACES TO APPLY AN ADHERENT PHOSPHATE COATING WHICH COMPRISES A DELIVERY CONDUIT TERMINATING IN A MANUALLY DIRIGIBLE DISCHARGE NOZZLE FOR DIRECTING THE STREAM FLOWING THEREFROM AGAINST AND OVER THE SURFACE OF THE METAL, A STREAM SUPPLY CONDUIT CONNECTED TO SAID DELIVERY CONDUIT FOR INTRODUCING A CONSTANT UNIFORM FLOW OF STEAM, A PLURALITY OF AUZILIARY SUPPLY CONDUITS CONNECTED TO SAID DELIVERY CONDUIT BETWEEN SAID STREAM SUPPLY AND SAID NOZZLE, A SEPARATE CHEMICAL-CONTAINING TANK FOR EACH AUXILIARY CONDUIT, A PRE-SET METERING DEVICE BETWEEN EACH CHEMICAL TANK AND SAID DELIVERY CONDUIT, A SEPARATE CLOSABLE SUPPLY VALUE FOR EACH AUXILIARY CONDUIT AND MEANS MANUALLY OPERABLE FROM SAID MANUALLY DIRIGIBLE DISCHARGE NOZZLE FOR REMOTELY OPERATING EACH OF SAID SUPPLY VALVES TO THEREBY SELECTIVELY DELIVER THE CHEMICALS FROM EACH TANK INTO SAID STREAM IN EXACT PREDETERMINED PORTIONS.
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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |