Patents Assigned to Bethea Power Products
  • Patent number: 6862861
    Abstract: An improved crossarm support bracket for preventing excessive bending and breakage at the midsection of crossarms caused by conventional horizontal brackets and supporting heavier crossarms. The improvement comprises a base portion for attaching the bracket to a utility pole, a pair of spaced apart flanges for supporting a crossarm, and a pair of arcuate mounting seats providing contact surfaces with outer edges of the crossarm to minimize deformation of the crossarm. By assuming a bowed position along the curvature of the seats, the arcuate shaped seats eliminate point pressure exerted by outer ends of conventional horizontal brackets which act as wedges against a crossarm receiving the combined weight of the distal ends of the crossarm. Mounting seats further minimize deformation of the crossarm by contacting the crossarm at its outer edge rather than the entire surface area.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: March 8, 2005
    Assignee: Bethea Power Products
    Inventor: Wei-Chung Lin
  • Patent number: 6455782
    Abstract: 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.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: September 24, 2002
    Assignee: Bethea Power Products
    Inventors: Wei-Chung Lin, William D. Caldwell
  • Patent number: 5552566
    Abstract: An improved apparatus for deconcentrating an electric field surrounding a high voltage insulator. A clamp assembly centrally formed within a coronal ring permits positive placement of the coronal ring about an insulator end fitting. The clamping assembly comprises an integral clamp with a u-shaped opening for engaging a cylindrical portion of an insulator end fitting. A keeper clamp mounts superjacent to the integral clamp and a smaller second u-shaped opening engages a portion of the insulator end fitting having a smaller diameter. A captive fastener such as a bolt extends upwardly through the clamp and keeper clamp to secure the keeper clamp in position against the insulator end fitting and the integral clamp to secure the corona ring in position relative the insulator end fitting and sheds. The varied sized openings of the clamp and keeper clamp prevent inverted installation of the corona ring.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: September 3, 1996
    Assignee: Reliable Bethea Power Products
    Inventors: Wei-Chung Lin, William D. Caldwell, John W. Cundiff
  • Patent number: 5445348
    Abstract: An auxiliary cable mounting attachment is disclosed which allows mounting a third communication cable at a position displaced from superjacent power lines and existing communication cables. The attachment clamps to an existing support bar without modification thereto and extends outwardly therefrom to support a clamp engagement for the auxiliary cable.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: August 29, 1995
    Assignee: Reliable Bethea Power Products, Inc.
    Inventors: William D. Caldwell, Wei-Chung Lin