US3683331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum rf connector and method for making same
Assignee: JOHN S OVERHOLSER
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Filing: 1970-01-30
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Granted: 1972-08-08
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Expires: 1990-01-30
Abstract
Abstract An RF component of the aluminum body, silver faced connector type for use in salty environments is of generally cylindrical configuration, and hard anodized over its entire exposed face to a predetermined depth. A generally cylindrical insert sleeve of brass is silver plated, over its entire exposed face, in a predetermined thickness and then press fitted into the hard anodized aluminum component. No electric current can be generated between the dissimilar metals, even in a slat environment, because of the isolation of the aluminum within its anodized surface. Defects in any rubber end caps and pores developing in the silver plate still prevent salt air from reaching the aluminum.
Inventors
- 👤 John S Overholser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:17
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/46; H01R13/533
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
26 words
A radio frequency connector as specified in claim 1 wherein: said hard anodized layer thickness is in the range of about one mil to five mils.
Claim 2
Dependent Claim
22 words
A radio frequency connector, as specified in claim 1 wherein: said silver plating thickness is about one-tenth of a mil in thickness.
Claim 3
Dependent Claim
32 words
A radio frequency connector as specified in claim 1 wherein: said hard anodized layer is about 0.001 to 0.005 inches in thickness and said silver plating is about 0.0001 inches in thickness.
Claim 4
Dependent Claim
23 words
A radio frequency connector as specified in claim 1 wherein: said silver plating is about one-tenth the thickness of said hard anodized layer.
Claim 5
Dependent Claim
103 words
A radio frequency component for use in a salty environment, said component comprising: a generally, hollow, cylindrical body of aluminum, said body having a hard anodized surface of predetermined thickness completely covering all of the exterior faces of said body, and a generally hollow, cylindrical, metal insert sleeve, press-fitted within said body, said sleeve having a layer of silver in a predetermined thickness completely covering all of the exterior faces thereof; whereby the aluminum of said body is protected from further oxidation, and electrically insulated from said silver, to prevent generation of current due to inter-action of dissimilar metals in said salty environment.
Claim 6
Dependent Claim
121 words
A process for making a radio frequency connector of an aluminum body having a silver facing by means of a metal insert sleeve, which comprises the steps of; forming said aluminum body into a generally, hollow, cylindrical configuration. hard anodizing the entire exposed outer, end and inner faces of said body to a uniform predetermined depth, at least 1 mil in thickness, separately silver plating, the entire exposed outer, end and inner surfaces of said metal insert sleeve to a uniform, predetermined thickness, at least one-tenth of a mill in thickness, and then affixing said silver plated insert firmly within said hard anodized aluminum body to form a connector free of electrical deterioration from inter-action of dissimilar metals in salty environments.
Claim 7
Independent Claim
121 words
The method of protecting a silver faced aluminum RF component of generally cylindrical configuration from deterioration in salt-containing environments, said method comprising the steps of, plating a generally cylindrical sleeve with a relatively thin coating of silver to a predetermined depth to entirely enclose the same in a silver coating; separately hard anodizing the entire exteRior face of said aluminum component to a depth at least twice the depth of said silver coating, by immersion to entirely enclose the same in a hard anodized coating, and then affixing said silver plated sleeve within said hard anodized aluminum component so that said sleeve lines the inner cylindrical face thereof, but no electrical interaction takes place between the dissimilar metals, silver and aluminum.
References Cited (Backward Citations)
US2858520A
Cited
US2986720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |