US5480683A
Expired / Lapsed
US
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Process for reducing the coefficient of friction and wear between a metal part and an organic polymer-or copolymer-based part and its application to artificial limb-joints and fittings working in marine environments
Assignee: Nitruvid SA
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Filing: 1993-12-16
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Granted: 1996-01-02
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Expires: 2013-12-16
Abstract
Abstract A process for reducing the coefficient of friction and the wear between a metal part and an organic polymer- or copolymer-based part, in an aqueous medium containing chlorides, characterized in that the organic polymer- or copolymer-based part is submitted to a surface treatment by ionic implantation of elements selected from nitrogen, argon, oxygen and carbon.
Inventors
- 👤 Claude Chabrol
- 👤 Marc Robelet
- 👤 Robert Leveque
- 👤 Anne L. M. Pichat nec Nedelec
- 👤 Jean F. E. Rieu
- 👤 Louis M. Rabbe
- 👤 Andre Rambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:38
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/16; A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61L; A61L27/00; A61L27/14; A61L27/16; A61L27/50; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61L2400/00; A61L2400/18; B29C35/00; B29C35/02; B29C35/08; B29C35/0866; B29C2035/0872; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/0608; B29K2023/065; B29K2023/0658; B29K2023/0683; B29L; B29L2031/00; B29L2031/747; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A process for simultaneously reducing the coefficient of friction and the wear between a metal part and an organic polymer- or copolymer-based part, in an aqueous medium containing chlorides, comprising the step of: submitting the organic polymer- or copolymer-based part to a surface treatment by ionic implantation of elements selected from the group consisting of nitrogen, argon, oxygen and carbon in an amount and under conditions sufficient to impart a reduced coefficient of friction and wear to the part as compared to an organic polymer- or copolymer-based part which is untreated.
Claim 2
Dependent Claim
91 words
A process for simultaneously reducing the coefficient of friction and the wear between a metal part and an organic polymer- or copolymer-based part, in an aqueous medium containing chlorides, comprising the step of: submitting the organic polymer- or copolymer-based part to a surface treatment by ionic implantation of elements selected from the group consisting of nitrogen, argon, oxygen and carbon in an amount and under conditions sufficient to impart a reduced coefficient of friction and wear to the part as compared to an organic polymer- or copolymer-based part which is untreated.
Claim 3
Dependent Claim
11 words
Process according to claim 1, wherein the polymer is a polyethylene.
Claim 4
Dependent Claim
19 words
Process according to claim 1, wherein the implantation is carried out with an energy of 10 to 300 keV.
Claim 5
Dependent Claim
19 words
Process according to claim 3, wherein the implantation is carried out with an energy of 50 to 150 keV.
Claim 6
Dependent Claim
85 words
A process for simultaneously reducing the coefficient of friction and the wear between a metal part and a polyethylene-based part, in an aqueous medium containing chlorides, comprising the step of: submitting the polyethylene-based part to a surface treatment of ionic implantation of elements selected from the group consisting of nitrogen, argon, oxygen and carbon in an amount and under conditions sufficient to impart a reduced coefficient of friction and wear to the part as compared to an organic polymer- or copolymer-based part which is untreated.
Claim 7
Dependent Claim
85 words
A process for simultaneously reducing the coefficient of friction and the wear between a metal part and a polyethylene-based part, in an aqueous medium containing chlorides, comprising the step of: submitting the polyethylene-based part to a surface treatment of ionic implantation of elements selected from the group consisting of nitrogen, argon, oxygen and carbon in an amount and under conditions sufficient to impart a reduced coefficient of friction and wear to the part as compared to an organic polymer- or copolymer-based part which is untreated.
References Cited (Backward Citations)
US4107350A
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FR2478113A1
Cited
US4452827A
Cited
US4917702A
Cited
US4743493A
Cited
US4764394A
Cited
US4917953A
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| 3.5 Years (Year 4) | 1999-01-01 | 1999-07-03 | 2000-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-01 | 2003-07-03 | 2004-01-02 | $3760.00 | Window Closed / Lapsed |
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