US3772749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite wheel
Assignee: Fagersta Bruks AB
•
Filing: 1972-03-31
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Granted: 1973-11-20
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Expires: 1992-03-31
Abstract
Abstract The invention provides a composite wheel having a hardened steel body rimmed with a hard metal carbide peripheral surface rim. The hard metal carbide peripheral surface is physically in contact with said steel body along the central portion of the periphery of said steel body. The hard metal carbide rim is brazed to said steel body by means of two joints. One of the brazed joints is between the hard metal carbide rim and said steel body along one side of said periphery and the other said joints along the other side of said periphery. The two joints are separated by the central portion of said hard metal carbide rim which is physically in contact with said steel body.
Inventors
- 👤 K Loqvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:49
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/19; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K2103/00; B23K2103/02; B23K2103/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
The composite wheel of claim 1 wherein said brazed joints are joints of silver-base brazing filler metal.
Claim 2
Dependent Claim
17 words
The composite wheel of claim 1 wherein said brazed joints are joints of copper-base brazing filler metal.
References Cited (Backward Citations)
US3432902A
Cited
US3609849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |