US4690780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating material and use thereof in insulators
Assignee: S&C Electric Co
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Filing: 1986-07-01
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Granted: 1987-09-01
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Expires: 2006-07-01
Abstract
Abstract An improved insulating material is provided. The insulating material is a mixture of an insulating fluid and solid insulative bodies. The insulating material exhibits desirable insulating, conformal coating, surface adhesion, and low-viscosity characteristics. For example, when the insulating material is used to fill the cavity of a hollow insulator, the insulating material prevents any moisture that enters the insulator from adhering to the walls that define the cavity; thus maintaining the insulating qualities of the insulator. In the event that some of the fluid is lost through leakage, the insulating material also aids in preserving the insulating qualities of the insulator.
Inventors
- 👤 Leonard V. Chabala
- 👤 John Haarsma
- 👤 Raymond P. O'Leary
- 👤 Christopher D. Roman
- 👤 Thomas J. Tobin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:36
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/32; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/56; H04; H04B; H04B1/00; H04B1/06; H04B1/10; Y; Y10; Y10S; Y10S200/00; Y10S200/04
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
89 words
An insulating material consisting of 10% to 80% by volume of an insulating fluid and 20% to 90% by volume of solid insulative bodies, the relative volumes and densities of said insulating fluid and said solid bodies, and the shape of said solid bodies being determined to provide a relatively free-flowing mixture, the densities of said insulating fluid and said solid insulative bodies being generally equal, the apparent viscosity of the insulating material to an object moving therein being less than 20 times the viscosity of said insulating fluid.
Claim 2
Dependent Claim
89 words
An insulating material consisting of 10% to 80% by volume of an insulating fluid and 20% to 90% by volume of solid insulative bodies, the relative volumes and densities of said insulating fluid and said solid bodies, and the shape of said solid bodies being determined to provide a relatively free-flowing mixture, the densities of said insulating fluid and said solid insulative bodies being generally equal, the apparent viscosity of the insulating material to an object moving therein being less than 20 times the viscosity of said insulating fluid.
Claim 3
Dependent Claim
30 words
The insulating material of claim 1 wherein the relative densities of said insulating fluid and said solid insulative bodies are in the range of 0.7 to 1.0 of each other.
Claim 4
Dependent Claim
28 words
The insulating material of claim 1 wherein said solid insulative bodies are generally rounded and have a maximum cross section within the range of 0.01 to 0.5 inch.
Claim 5
Dependent Claim
17 words
The insulating material of claim 3 wherein the maximum viscosity of said insulating fluid is 10,000 centistokes.
Claim 6
Dependent Claim
17 words
The insulating material of claim 1 wherein said solid insulative bodies comprise a plurality of different sizes.
Claim 7
Dependent Claim
40 words
An insulating material consisting of 10% to 80% by volume of an insulating fluid and 20% to 90% by volume of solid insulative bodies, the density of each of said insulating fluid and said solid insulative bodies being generally equal.
Claim 8
Dependent Claim
40 words
An insulating material consisting of 10% to 80% by volume of an insulating fluid and 20% to 90% by volume of solid insulative bodies, the density of each of said insulating fluid and said solid insulative bodies being generally equal.
Claim 9
Dependent Claim
20 words
The insulating material of claim 6 wherein said densities are within the range of 0.7 to 1.0 of each other.
Claim 10
Dependent Claim
21 words
The insulating material of claim 6 wherein said densities are in the range of 0.5 to 2.0 gram per cubic centimeter.
Claim 11
Dependent Claim
14 words
The insulating material of claim 6 wherein said solid insulative bodies are generally rounded.
Claim 12
Dependent Claim
19 words
The insulating material of claim 6 wherein the maximum cross section of said solid insulative bodies is 0.5 inch.
Claim 13
Dependent Claim
19 words
The insulating material of claim 6 wherein the minimum cross section of said solid insulative bodies is 0.01 inch.
Claim 14
Dependent Claim
31 words
The insulating material of claim 6 wherein the apparent viscosity as measured by an object moving in said insulating material is less than 20 times the viscosity of said insulating fluid.
Claim 15
Dependent Claim
47 words
An insulating material consisting of 10% to 80% by volume of an insulating fluid and 20% to 90% by volume of solid insulative bodies, the apparent voscosity of the insulating material to an object moving therein being less than 20 times the viscosity of said insulating fluid.
Claim 16
Dependent Claim
47 words
An insulating material consisting of 10% to 80% by volume of an insulating fluid and 20% to 90% by volume of solid insulative bodies, the apparent voscosity of the insulating material to an object moving therein being less than 20 times the viscosity of said insulating fluid.
Claim 17
Dependent Claim
30 words
The insulating material of claim 13 wherein the relative densities of said insulating fluid and said solid insulative bodies are in the range of 0.7 to 1.0 of each other.
Claim 18
Dependent Claim
14 words
The insulating material of claim 13 wherein said solid insulative bodies are generally rounded.
Claim 19
Dependent Claim
24 words
The insulating material of claim 14 wherein said solid insulative bodies have a maximum cross section in the range of 0.01 to 0.5 inch.
Claim 20
Dependent Claim
17 words
The insulating material of claim 13 wherein the maximum viscosity of said insulating fluid is 10,000 centistokes.
Claim 21
Dependent Claim
32 words
The insulating material of claim 13 wherein said solid insulative bodies constitute 50-75% by volume, are generally rounded, and have a maximum cross section in the range of 0.05 to 0.5 inch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |