Metal working – Method of mechanical manufacture – Repairing
Reexamination Certificate
2007-12-24
2011-11-08
Omgba, Essama (Department: 3726)
Metal working
Method of mechanical manufacture
Repairing
C029S402030, C029S402090, C029S402110, C029S824000, C029S823000, C029S822000
Reexamination Certificate
active
08051544
ABSTRACT:
A method of replacing an electrical insulator on a conductor-supporting tower includes the steps of providing an elongate beam spanning the tower between a work site and a helicopter accessible site, a trolley movable on the beam between the sites and an insulator cradle detachably supported by the trolley for supporting the insulator during transport between the sites and to and from the tower via helicopter. The cradle is a partially peripherally enclosed, open-topped structure having a floor, an upstanding rear wall, peripheral walls sloping downwardly from the rear wall to a front wall, an opening in the front wall, an elongate slot in the floor extending rearwardly from the opening, the slot having a width greater than the diameter of an insulator shank but less than the diameter of an insulator skirt, the dimensions of the floor allowing an insulator skirt to lie flat thereon.
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Friedman Stuart J.
Haverfield International Incorporated
Omgba Essama
LandOfFree
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