US3775547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cast epoxy bushing having a weldable flange
Assignee: ABB Inc USA
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Filing: 1972-10-12
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Granted: 1973-11-27
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Expires: 1992-10-12
Abstract
Abstract An electrical bushing assembly having an electrical conductor extending through a solid body member cast of insulating material, a rigid metallic mounting member or flange having a generally circular opening therein, a certain portion of said flange adjacent to the opening being embedded in said cast body member, and a cylindrical-shaped, thin, less rigid metallic member attached to said flange adjacent to the opening therein. The less rigid metallic member is completely embedded in the resin of the body member. The bushing assembly is mounted in sealed relationship to a casing enclosing electrical apparatus and fluid dielectric by welding the rigid mounting member or flange to the casing.
Inventors
- 👤 E Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:35
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/26; H01B17/30; H01B17/303; H01B17/306
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
201 words
An electrical bushing assembly for mounting on a casing containing oil dielectric with a portion of said bushing assembly extending into said oil dielectric, said bushing assembly comprising: an insulating body member formed of solid insulation, electrical conductor means extending centrally and axially through said body member, a release material disposed about a predetermined portion of said electrical conductor means adjacent said oil dielectric, a first rigid metallic mounting member having an opening therein, said first rigid metallic mounting member having a predetermined continuous portion around its opening embedded in said insulating body member, a second thin and flexible metallic foil member attached to said first rigid metallic mounting member continuously about said opening therein with a fluid-tight seal, said second thin and flexible metallic foil member surrounding in spaced relationship a predetermined portion of said electrical conductor means, a resin material disposed about said second thin and flexible metallic foil member, said resin material bonding said thin and flexible metallic foil member to said solid body member with a fluid-tight seal, said second thin and flexible metallic foil member extending from said fluid-tight seal with said first rigid metallic mounting member and being completely embedded in said insulating body member.
Claim 2
Dependent Claim
201 words
An electrical bushing assembly for mounting on a casing containing oil dielectric with a portion of said bushing assembly extending into said oil dielectric, said bushing assembly comprising: an insulating body member formed of solid insulation, electrical conductor means extending centrally and axially through said body member, a release material disposed about a predetermined portion of said electrical conductor means adjacent said oil dielectric, a first rigid metallic mounting member having an opening therein, said first rigid metallic mounting member having a predetermined continuous portion around its opening embedded in said insulating body member, a second thin and flexible metallic foil member attached to said first rigid metallic mounting member continuously about said opening therein with a fluid-tight seal, said second thin and flexible metallic foil member surrounding in spaced relationship a predetermined portion of said electrical conductor means, a resin material disposed about said second thin and flexible metallic foil member, said resin material bonding said thin and flexible metallic foil member to said solid body member with a fluid-tight seal, said second thin and flexible metallic foil member extending from said fluid-tight seal with said first rigid metallic mounting member and being completely embedded in said insulating body member.
Claim 3
Dependent Claim
37 words
The electrical bushing assembly of claim 1 wherein said second thin and flexible metallic foil member extends from said fluid-tight seal with said first rigid metallic mounting member in a direction substantially parallel to said conductor means.
Claim 4
Dependent Claim
47 words
The electrical bushing assembly of claim 1 wherein said second thin and flexible metallic foil member extends from said fluid-tight seal with said first rigid metallic mounting member in a direction substantially perpendicular to said first rigid metallic mounting member and substantially parallel to said conductor means.
Claim 5
Dependent Claim
21 words
The electrical bushing assembly of claim 1, wherein said second thin and flexible metallic foil member is substantially cylindrical in shape.
Claim 6
Dependent Claim
36 words
The electrical bushing assembly of claim 1 wherein said second thin and flexible metallic foil member is disposed so as to extend from said fluid-tight seal with said first rigid metallic mounting member in one direction.
Claim 7
Dependent Claim
55 words
The electrical bushing assembly of claim 1 wherein said second thin and flexible metallic foil member is disposed so as to extend from said fluid-tight seal with said first rigid metallic mounging member in one direction, said direction being substantially perpendicular to said first rigid metallic mounting member and substantially parallel to said conductor means.
Claim 8
Dependent Claim
46 words
The electrical bushing assembly of claim 1 wherein said second thin and flexible metallic foil member is disposed so as to extend from said fluid-tight seal with said first rigid metallic mounting member in two directions from its attachment to said first rigid metallic mounting member.
Claim 9
Dependent Claim
65 words
The electrical bushing assembly of claim 1 wherein said second thin and flexible metallic foil member is disposed so as to extend from said fluid-tight seal with said first rigid metallic mounting member in two directions from its attachment to said first rigid metallic mounting member, said directions being substantially perpendicular to said first rigid metallic mounting member and substantially parallel to said conductor means.
Claim 10
Dependent Claim
25 words
The electrical bushing assembly of claim 1, wherein said first rigid metallic mounting member is fabricated of a material approximately 1/16 of an inch thick.
Claim 11
Dependent Claim
34 words
The electrical bushing assembly of claim 9, wherein said second thin and flexible metallic foil member is fabricated of a material having a thickness within the limits of 0.002 to 0.010 of an inch.
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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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |