US4232094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprayed coatings on metal surfaces
Assignee: SKF Industrial Trading and Development Co BV
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Filing: 1973-12-10
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Granted: 1980-11-04
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Expires: 1993-12-10
Abstract
Abstract Process of improving a sprayed layer on a bearing or tool component subjected to relatively high stresses, characterized in that the layer is remelted by a heat-source in a vacuum chamber, the heating being arranged such that only the layer itself is remelted.
Inventors
- 👤 Cyril E. Rhodes
- 👤 Martin B. Verburgh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:24
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/62; C; C23; C23C; C23C26/00; C23C26/02; C23C4/00; C23C4/18; F16C33/64; F16C2206/00; F16C2206/80; F16C2206/82; Y; Y10; Y10S; Y10S148/00; Y10S148/902; Y10S148/903; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/932; Y10S428/9335; Y10S428/937; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/12493; Y10T428/125; Y10T428/12507; Y10T428/12535; Y10T428/12576; Y10T428/12611; Y10T428/12771; Y10T428/12861; Y10T428/12937
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
91 words
A method of producing an improved layer bonding in a bearing tool component subjected to relatively high stresses and comprising a sprayed exterior coating layer on a base member, said method comprising the steps of: spraying said exterior coating layer on said base member; and applying heat directly only to said exterior coating layer in an amount sufficient for remelting only said layer, in a chamber evacuated to a pressure of 10 -1 torr or less, so that the properties of said base member remain substantially unaltered and the bonding improved.
Claim 2
Independent Claim
91 words
A method of producing an improved layer bonding in a bearing tool component subjected to relatively high stresses and comprising a sprayed exterior coating layer on a base member, said method comprising the steps of: spraying said exterior coating layer on said base member; and applying heat directly only to said exterior coating layer in an amount sufficient for remelting only said layer, in a chamber evacuated to a pressure of 10 -1 torr or less, so that the properties of said base member remain substantially unaltered and the bonding improved.
Claim 3
Dependent Claim
25 words
A method as in claim 1, wherein said remelting is executed with an electron beam, said beam being produced by an electron beam welding apparatus.
Claim 4
Dependent Claim
14 words
A method as in claim 1, wherein said layer consists of a metal alloy.
Claim 5
Dependent Claim
18 words
A method as in claim 1, wherein said layer consists of an alloy of ceramic material and metal.
Claim 6
Dependent Claim
15 words
A method as in claim 1, wherein said layer consists of metal and metal carbide.
Claim 7
Dependent Claim
21 words
A method as in claim 5, wherein said layer consists essentially of about 50% tungsten carbide distributed in a nickel-cobalt matrix.
Claim 8
Dependent Claim
16 words
A method as in claim 1, wherein said layer consists of an alloy containing oxide material.
Claim 9
Dependent Claim
12 words
A rolling bearing ring produced by the method defined in claim 1.
Claim 10
Dependent Claim
11 words
A cutting tool produced by the method defined in claim 1.
Claim 11
Independent Claim
127 words
A method of producing improved layer bonding in a layer coated metallic base member component, comprising the steps of spraying a metallic base member compound with a continuous exterior coating layer of a relatively porous oxidic alloy, placing said sprayed base member component in a reduced pressure chamber of 10 -1 torr or less, and heating said layer in said chamber with a heat source employing a focussed heat confined to limited points only on said layer without said base member component being affected, and with sufficient energy to effect only remelting of said layer to reduce the porosity and oxide content of said layer, the properties of said base member remaining substantially unaltered, and the bonding of said layer to said base member thereby being improved.
Claim 12
Independent Claim
127 words
A method of producing improved layer bonding in a layer coated metallic base member component, comprising the steps of spraying a metallic base member compound with a continuous exterior coating layer of a relatively porous oxidic alloy, placing said sprayed base member component in a reduced pressure chamber of 10 -1 torr or less, and heating said layer in said chamber with a heat source employing a focussed heat confined to limited points only on said layer without said base member component being affected, and with sufficient energy to effect only remelting of said layer to reduce the porosity and oxide content of said layer, the properties of said base member remaining substantially unaltered, and the bonding of said layer to said base member thereby being improved.
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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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |