Patent US3762882A successfully refreshed from Google Patents.
US3762882A
Expired / Lapsed
US
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Wear resistant diamond coating and method of application
Assignee: Di Coat Corp
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Filing: 1971-06-23
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Granted: 1973-10-02
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Expires: 1991-06-23
Abstract
Abstract A process for producing an extremely hard and wear resistant coating on a basis metal comprising the electro-deposition of fine grained diamonds and diamond particles in a metal matrix upon said basis metal. The coating comprises a uniform electrolytic deposit of a metal matrix having embedded therein diamonds and diamond particles ranging between 0.01 micron to 30 microns in size.
Inventors
- 👤 Z Grutza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:56
CPC Classifications
C; C25; C25D; C25D15/00; C25D15/02; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/932; Y10S428/9335; Y10S428/934; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12639
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
36 words
The method as set forth in claim 1 wherein the metal is selected from the group consisting of antimony, bismuth, cadmium, chromium, cobalt, copper, gold, indium, iron, lead, nickel, palladium, platinum, silver, tungsten, tin and zinc.
Claim 2
Dependent Claim
21 words
The method as set forth in claim 1 wherein said diamonds are from approximately 0.01 micron to 15 microns average diameter.
Claim 3
Dependent Claim
21 words
The method as set forth in claim 1 wherein said diamonds are from approximately 0.01 micron to 1 micron average diameter.
Claim 4
Dependent Claim
22 words
The method as set forth in claim 1 wherein said bath contains suspended therein about 150 carats per liter of diamond particles.
Claim 5
Dependent Claim
47 words
The method as set forth in claim 1 and further including the step of pretreating the diamond particles by washing the diamond particles, soaking said particles in a wetting agent of the anionic type, and rinsing said particles in water before suspending said particles in said bath.
Claim 6
Dependent Claim
35 words
The method as set forth in claim 1 wherein the metal is essentially nickel and wherein said bath comprises at least one nickel salt selected from the group consisting of nickel sulfate and nickel chloride.
Claim 7
Dependent Claim
23 words
The method as set forth in claim 1 wherein said diamond particles are particles of synthetic diamonds and further including magnetizing the cathode.
Claim 8
Dependent Claim
138 words
A composite wear resistant electroplate on a metal surface comprising diamond particles in a metal matrix, said particles having relatively smooth and ragged surfaces and having an average particle diameter of from about 0.01 to 30 microns and being electrophoretically deposited in the matrix in a spatially oriented pattern wherein said smooth surfaces of said particles are directed outwardly from said metal surface and said ragged surfaces are directed inwardly toward said metal surface,made by a method comprising making said metal surface a cathode in an electroplating bath of said metal having suspended therein said diamond particles and eleCtrolyzing said bath while said particles are in suspension and while keeping said bath in a quiescent state with externally applied current of sufficient density to electrophoretically deposit said diamond particles and metal on said surface in a composite electroplate.
Claim 9
Dependent Claim
21 words
The electroplate as set forth in claim 9 wherein said diamond particles are washed before being suspended in said electroplating bath.
Claim 10
Dependent Claim
26 words
The electroplate as set forth in claim 9 wherein said diamond particles are particles of synthetic diamonds and the method of making includes magnetizing the cathode.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |