US4488771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorosilicone elastomers, method of making such elastomers and electrical connectors including the elastomers
Assignee: Amphenol Corp
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Filing: 1982-03-08
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Granted: 1984-12-18
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Expires: 2002-03-08
Abstract
Abstract Fluorosilicone elastomeric compositions, and electrical connectors including inserts molded from such compositions, formed of an organosilicone polymer and a telomer of a solid particulate organofluoro compound, preferably tetrafluoroethylene, dispersed in the silicone polymer.
Inventors
- 👤 Stuart K. Koford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:16
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/46; C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
90 words
In an electrical connector comprising an outer housing, an insert within said housing and having aperture means therein and electric contact means in communication with said aperture means, the improvement comprising: said insert being formed of an elastomeric material comprising a two-phase composition formed of an organosilicone polymer having dispersed therein a telomer of an organofluoro compound selected from the group consisting of perfluorinated hydrocarbons, said telomer being present in solid particulate form and having a particle size in the range of about 1 to 10 microns prior to processing.
Claim 2
Dependent Claim
90 words
In an electrical connector comprising an outer housing, an insert within said housing and having aperture means therein and electric contact means in communication with said aperture means, the improvement comprising: said insert being formed of an elastomeric material comprising a two-phase composition formed of an organosilicone polymer having dispersed therein a telomer of an organofluoro compound selected from the group consisting of perfluorinated hydrocarbons, said telomer being present in solid particulate form and having a particle size in the range of about 1 to 10 microns prior to processing.
Claim 3
Dependent Claim
27 words
The electrical connector of claim 1 wherein said organosilicon polymer is the reaction product of a dimethylpolysiloxane and polymethylhydrogensiloxane and said telomer is a telomer of tetrafluoroethylene.
Claim 4
Dependent Claim
30 words
The electrical connector of claim 1 wherein said telomer is present in an amount of about 5 to 15 percent by weight, based on the total weight of said composition.
Claim 5
Dependent Claim
19 words
The electrical connector of claim 1 wherein said telomer is selected from the group consisting of tetrafluoroethylene and trifluoropropylene.
Claim 6
Dependent Claim
14 words
The electrical connector of claim 4 wherein said telomer is a telomer of tetrafluoroethylene.
Claim 7
Dependent Claim
20 words
The electrical connector of claim 5 wherein said organosilicone polymer is the reaction product of a polyorganosiloxane and a polyorganohydrogensiloxane.
Claim 8
Dependent Claim
12 words
The electrical connector of claim 6 wherein said polyorganosiloxane is a polydimethylhydrogensiloxane.
Claim 9
Dependent Claim
20 words
The electrical connector of claim 7 wherein said polydimethylsiloxane is end-blocked by vinyl radicals and said polymethylhydrogensiloxane is a polydimethylhydrogensiloxane.
Claim 10
Dependent Claim
29 words
The electrical connector of claim 5 wherein said telomer is present in an amount of about 1 to 25 weight percent, based on the total weight of said composition.
Claim 11
Dependent Claim
29 words
The electrical connector of claim 9 wherein said telomer is present in an amount of about 5 to 15 weight percent, based on the total weight of said composition.
Claim 12
Dependent Claim
22 words
The electrical connector of claim 10 wherein the melt index of said telomer is in the range of about 0.02 to 2.
Claim 13
Dependent Claim
20 words
The electrical connector of claim 11 wherein said organosilicone polymer is the reaction product of a polydimethylsiloxane and a polydimethylhydrogensiloxane.
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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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |