US4418171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-tracking material for high voltage applications
Assignee: LEXINGTON PRECISION Corp A CORP OF DE
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Filing: 1982-02-16
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Granted: 1983-11-29
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Expires: 2002-02-16
Abstract
Abstract A silicone rubber composition for electrical connector housings having increased resistance to tracking and the ability to cure the damage caused by tracking should it occur. A heat during silicone rubber and a non-curing silicone oil incompatible with the silicone rubber are combined with the liquid oil dispersed throughout the solid rubber and molded into desired shapes.
Inventors
- 👤 Harold E. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:48
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; C08G77/20; C08G77/70; Y; Y10; Y10S; Y10S439/00; Y10S439/933; Y10S439/936
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
98 words
In a high voltage insulated connector for a high voltage electrical connection to a device having an insulating surface surrounding said connection, said connector comprised of a metallic electrical clip, a cup formulated from an elastomeric insulating material surrounding said metallic clip and having a skirt with a surface adapted to be pressed against said insulating surface over a wide area, the improvement which comprises an insulating oil incompatible with said elastomeric insulating material dispersed throughout the material of said cup and exuding from said material to fill the interface between said skirt surface and said insulating surface.
Claim 2
Dependent Claim
98 words
In a high voltage insulated connector for a high voltage electrical connection to a device having an insulating surface surrounding said connection, said connector comprised of a metallic electrical clip, a cup formulated from an elastomeric insulating material surrounding said metallic clip and having a skirt with a surface adapted to be pressed against said insulating surface over a wide area, the improvement which comprises an insulating oil incompatible with said elastomeric insulating material dispersed throughout the material of said cup and exuding from said material to fill the interface between said skirt surface and said insulating surface.
Claim 3
Dependent Claim
20 words
The improvement of claim 1 wherein said elastomeric material is a silicone rubber and said oil is a silicone oil.
Claim 4
Dependent Claim
12 words
The improvement of claim 2 wherein said elastomeric material is methyl-silicone rubber.
Claim 5
Dependent Claim
14 words
The improvement of claim 3 wherein said elastomeric material is a methyl-vinyl silicone rubber.
Claim 6
Dependent Claim
16 words
The improvement of claim 3 or claim 4 wherein said silicone oil is a phenyl-silicone oil.
Claim 7
Dependent Claim
16 words
The improvement of claim 3 or claim 4 wherein said silicone oil is a phenyl-methyl-silicone oil.
Claim 8
Dependent Claim
45 words
The improvement of claim 1 wherein said elastomeric material is comprised of the following ingredients by weight percentage of the elastomeric material and insulating oil total weight: ______________________________________
Weight
Ingredients Percent
______________________________________
Silicone Rubber 40-99%
Mineral Filler 0-60%
Curing Agent 0.5-03%
Incompatible Oil 0.25-20%
______________________________________
Claim 9
Dependent Claim
13 words
The improvement of claim 7 wherein said silicone rubber is a methyl-silicone rubber.
Claim 10
Dependent Claim
13 words
The improvement of claim 7 wherein said silicone rubber is a vinyl-methyl-silicone rubber.
Claim 11
Dependent Claim
16 words
The improvement of claim 8 or claim 9 wherein said incompatible oil is a phenyl-silicone oil.
Claim 12
Dependent Claim
16 words
The improvement of claim 8 or claim 9 wherein said incompatible oil is a phenyl-methyl-silicone oil.
Claim 13
Dependent Claim
18 words
The improvement of claim 7 wherein said incompatible oil is present in the range of 0.5 to 5%.
Claim 14
Dependent Claim
13 words
The improvement of claim 7 wherein said incompatible oil is a phenyl-silicone oil.
Claim 15
Dependent Claim
13 words
The improvement of claim 7 wherein said incompatible oil is a phenyl-methyl-silicone oil.
Claim 16
Dependent Claim
18 words
The improvement of claim 7 wherein said incompatible oil is present in the range of 0.75 to 4.0%.
Claim 17
Dependent Claim
18 words
The improvement of claim 7 wherein said incompatible oil is present in the range of 1.0 to 3.5%.
Claim 18
Dependent Claim
64 words
A process for fabricating high voltage insulators comprising: forming a mixture of a silicone rubber, a mineral filler, a curing agent for said silicone rubber and a silicone oil incompatible with said silicone rubber; charging said mixture into a mold; and, applying heat to said mold thereby curing said mixture into a solid elastomer part having a liquid silicone oil dispersed through said part.
Claim 19
Dependent Claim
64 words
A process for fabricating high voltage insulators comprising: forming a mixture of a silicone rubber, a mineral filler, a curing agent for said silicone rubber and a silicone oil incompatible with said silicone rubber; charging said mixture into a mold; and, applying heat to said mold thereby curing said mixture into a solid elastomer part having a liquid silicone oil dispersed through said part.
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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) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |