Patent US835845A successfully refreshed from Google Patents.
US3289293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedure for welding a joint and protecting the joint and adjacent metal surfaces against rust and corrosion
Assignee: Torsten Stenquist Ingerjorsfirma
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Filing: 1963-02-06
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Granted: 1966-12-06
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Expires: 1983-02-06
Abstract
No abstract record available.
Inventors
- 👤 Stenquist Knut Torsten
- 👤 Ringstrom Gunnar Walfrid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:16
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; B23K35/22; B23K35/24; B23K35/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A PROCESS FOR WELDING A PAIR OF EDGES AND PROTECTING THE WELDING JOINT FORMED THEREBY AND ADJACENT METALLIC SURFACES AGAINST RUST AND CORROSION COMPRISING CLEANING SAID EDGES AND SAID SURFACES, APPLYING A FIRST COATING LAYER OF A ZINC-RICH PAINT CONTAINING 90-96 PERCENT ZINC IN THE DRY FILM TO A PORTION OF SAID SURFACES WHILE LEAVING UNCOATED AREAS UP TO A DISTANCE OF 5-25 CENTIMETERS FROM EACH OF SAID EDGES, WELDING SAID EDGES TOGETHER TO FORM A WELDING JOINT, CLEANING SAID WELDING JOINT AND SAID UNCOATED AREAS, APPLYING A COATING LAYER OF RUST AND CORROSION INHIBITING HOT ZINC TO SAID WELDING JOINT AND ADJACENT PORTIONS OF SAID UNCOATED AREAS WHILE LEAVING UNCOATED ZONES BETWEEN SAID HOT ZINC LAYER AND SAID FIRST LAYER OF ZINC-RICH PAINT, IMMEDIATELY APPLYING A SECOND COATING LAYER OF SAID ZINC-RICH PAINT OVER SAID HOT ZINC LAYER AND SAID UNCOATED ZONES, SAID SECOND LAYER OF ZINC RICH PAINT OVERLAPPING PORTIONS OF SAID FIRST LAYER OF ZINCRICH PAINT.
Claim 2
Dependent Claim
159 words
A PROCESS FOR WELDING A PAIR OF EDGES AND PROTECTING THE WELDING JOINT FORMED THEREBY AND ADJACENT METALLIC SURFACES AGAINST RUST AND CORROSION COMPRISING CLEANING SAID EDGES AND SAID SURFACES, APPLYING A FIRST COATING LAYER OF A ZINC-RICH PAINT CONTAINING 90-96 PERCENT ZINC IN THE DRY FILM TO A PORTION OF SAID SURFACES WHILE LEAVING UNCOATED AREAS UP TO A DISTANCE OF 5-25 CENTIMETERS FROM EACH OF SAID EDGES, WELDING SAID EDGES TOGETHER TO FORM A WELDING JOINT, CLEANING SAID WELDING JOINT AND SAID UNCOATED AREAS, APPLYING A COATING LAYER OF RUST AND CORROSION INHIBITING HOT ZINC TO SAID WELDING JOINT AND ADJACENT PORTIONS OF SAID UNCOATED AREAS WHILE LEAVING UNCOATED ZONES BETWEEN SAID HOT ZINC LAYER AND SAID FIRST LAYER OF ZINC-RICH PAINT, IMMEDIATELY APPLYING A SECOND COATING LAYER OF SAID ZINC-RICH PAINT OVER SAID HOT ZINC LAYER AND SAID UNCOATED ZONES, SAID SECOND LAYER OF ZINC RICH PAINT OVERLAPPING PORTIONS OF SAID FIRST LAYER OF ZINCRICH PAINT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |