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US 6,455,782 B1Granted
Apparatus for preventing coronal discharge
AssigneeBethea Power Products
InventorsWei-Chung Lin, William D. Caldwell
Life of this patent
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AssigneeBethea Power Products
InventorsWei-Chung Lin, William D. Caldwell
Estimating the term…
An improved apparatus for deconcentrating an electric field, surrounding a high voltage insulator. A clamp assembly centrally formed within a coronal ring permitting positive placement of the coronal ring about an insulator end fitting. The clamping assembly includes an integral clamp with a U-shaped opening for engaging a cylindrical portion of an insulator end fitting. Two keeper clamps are pivotally mounted superjacent to the integral clamp, each keeper clamp having a smaller U-shaped opening both of which engage a portion of the insulator end fitting and pivot toward each other between an insulator receiving position and an insulator securing position, securing the insulator between the integral clamp and the two keeper clamps. A captive fastener such as a bolt extends upwardly through the clamp and the keeper clamps to secure the keeper clamps in position against the insulator end fitting and the integral clamp to secure the corona ring in position relative the insulator end fitting. The varied sized openings of the integral clamp and keeper clamps prevent inverted installation of the corona ring.
An apparatus for deconcentrating an electric field surrounding a high voltage insulator comprising:
An apparatus for deconcentrating an electric field surrounding a high voltage insulator comprising a corona ring having a integral cross member connecting inner edges of said ring, said cross member forming an integral clamp seat at center of said ring, said clamp seat defining a first U-shaped opening therein, two keeper clamps pivotally mounted superjacent said integral cross member, said keeper clamps defining second and third U-shaped openings of a dimension lesser than said first U-shaped opening, and fasteners retaining said keeper clamps adjacent said integral cross member, such that said first, second and third U-shaped openings receive there within an insulator end fitting on a high voltage insulator having a major and minor diameter, wherein said keeper clamps are pivotally mounted about an axis passing through the integral cross member such that said keeper clamps rotate concomitantly in opposing direction between a first fixed position for receiving said insulator end fitting and a second fixed position for securing said insulator end fitting against said clamp seat.
An apparatus for deconcentrating an electric field surrounding a high voltage insulator comprising a corona ring having an integral cross member connecting inner edges of said ring, said cross member forming a clamp seat at a center of said ring, said clamp seat defining a first U-shaped opening, said first U-shaped opening further comprising a pair of parallel walls for engaging a major diameter of an insulator end fitting, said clamp seat defining curved walls extending upwardly from said first U-shaped opening to accommodate a first surface of an annular bell of said insulator end fitting, two keeper clamps pivotally mounted on said clamp seat superjacent said cross member, said keeper clamps defining aligned second and third U-shaped openings of a dimension lesser than said first U-shaped opening, said keeper clamps rotating concomitantly in opposite directions between a first fixed position for receiving said insulator end fitting and a second fixed position for securing said insulator end fitting against said clamp seat, said second and third U-shaped openings comprising a pair of parallel walls for engaging a minor diameter of said insulator end fitting, said keeper clamps defining a surface outwardly extending from said second and third U-shaped openings to accommodate an opposite surface of said annular bell of said insulator end fitting, a fastener retaining each said keeper clamp adjacent said clamp seat.
An improved apparatus for deconcentrating an electric field surrounding a high voltage insulator comprising a corona ring and a clamp assembly for mounting said corona ring to an insulator end fitting of a high voltage insulator said clamp assembly for engaging an annular bell on said insulator end fitting wherein said clamp assembly further comprises an integral cross member connecting interior edges of said corona ring, said integral cross member forming a clamp seat at a central portion of said cross member, said cross member defining a first U-shaped opening therein, and a keeper mechanism wherein the improvement comprises:
Dependencies are inferred from the claim text.