US5853797A
Expired / Lapsed
US
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Method of providing corrosion protection
Assignee: FCI Americas Technology LLC
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Filing: 1997-09-30
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Granted: 1998-12-29
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Expires: 2017-09-30
Abstract
Abstract Disclosed is a method and solution for providing corrosion protection for electrical contact members. The contact members are exposed to the solution, which in one embodiment includes a phosphonate, a lubricant, and a solvent. In a preferred embodiment, the phosphonate is phosphonic acid, the lubricant is polyphenyl ether or tricresylphosphate, and the solvent includes an isoparaffinic hydrocarbon. In a further embodiment, the lubricant can be omitted from the solution.
Inventors
- 👤 Harold E. Fuchs
- 👤 Henry Hon Law
- 👤 Daniel George Muth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:42
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/02; C23C22/03; C10; C10M; C10M101/00; C10M101/02; C10M105/00; C10M105/08; C10M105/10; C10M105/12; C10M105/74; C10M107/00; C10M107/20; C10M107/30; C10M107/32; C10M137/00; C10M137/12; C10M169/00; C10M169/04; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/167; C23F11/1676; C10M2203/00; C10M2203/10; C10M2203/1006; C10M2203/102; C10M2203/1025; C10M2203/104; C10M2203/1045; C10M2203/106; C10M2203/1065; C10M2203/108; C10M2203/1085; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/0215; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/101; C10M2209/1013; C10M2209/102; C10M2209/1023; C10M2223/00; C10M2223/003; C10M2223/02; C10M2223/023; C10M2223/04; C10M2223/0405; C10M2223/041; C10M2223/049; C10M2223/0495; C10M2223/06; C10M2223/0603; C10M2223/061; C10M2223/065; C10M2223/08; C10M2223/083; C10M2223/10; C10M2223/103; C10N; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/015; C10N2050/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
43 words
A method for treating electrical contact members for corrosion protection comprising exposing the members to a solution consisting essentially of a phosphonate, a lubricant, and a solvent having a flash point above 49 degrees C., wherein the lubricant is not a phosphonate material.
Claim 2
Independent Claim
43 words
A method for treating electrical contact members for corrosion protection comprising exposing the members to a solution consisting essentially of a phosphonate, a lubricant, and a solvent having a flash point above 49 degrees C., wherein the lubricant is not a phosphonate material.
Claim 3
Dependent Claim
25 words
The method according to claim 1, wherein the phosphonate is selected from a group consisting of phosphonic acids, esters of phosphonic acids, and salts thereof.
Claim 4
Dependent Claim
37 words
The method according to claim 1, wherein the phosphonate is a phosphonic acid having a formula CH 3 (CH 2 ) n PH 2 O 3 , where n is in a range of 5 to 13.
Claim 5
Independent Claim
61 words
A method for treating electrical contact members for corrosion protection comprising exposing the members to a solution consisting essentially of phosphonic acid having the formula CH 3 (CH 2 ) n PH 2 O 3 , where n is in a range of 5-13, and a solvent, wherein the solvent comprises an isoparaffinic hydrocarbon and, optionally one of octanol and polyolesters.
Claim 6
Independent Claim
61 words
A method for treating electrical contact members for corrosion protection comprising exposing the members to a solution consisting essentially of phosphonic acid having the formula CH 3 (CH 2 ) n PH 2 O 3 , where n is in a range of 5-13, and a solvent, wherein the solvent comprises an isoparaffinic hydrocarbon and, optionally one of octanol and polyolesters.
Claim 7
Independent Claim
25 words
The method according to claims 3 or 4, wherein a concentration of the phosphonic acid is within a range of 0.01 to 10 weight percent.
Claim 8
Dependent Claim
20 words
The method according to claim 3, wherein the lubricant is selected from a group consisting of polyphenyl ether and tricresylphosphate.
Claim 9
Dependent Claim
13 words
The method according to claim 3, wherein the solvent comprises an isoparaffinic hydrocarbon.
Claim 10
Dependent Claim
12 words
The method according to claim 7, wherein the solvent further comprises octanol.
Claim 11
Independent Claim
34 words
The method according to claims 1 or 4, wherein the contact members comprise conductive pins having one end which is matable with a connector and an opposite end which is adapted for wire wrapping.
Claim 12
Independent Claim
29 words
The method according to claims 1 or 4, wherein the members are exposed by immersing in the solution for a period in a range of 1 to 30 seconds.
Claim 13
Dependent Claim
23 words
The method according to claim 1, wherein the solution is heated to a temperature with a range of 20 to 60 degrees C.
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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) | 2001-12-28 | 2002-06-29 | 2002-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-28 | 2006-06-29 | 2006-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-28 | 2010-06-29 | 2010-12-29 | $7700.00 | Window Closed / Lapsed |