Abstract: An electrical device having therein a dielectric fluid composition, wherein the dielectric fluid composition includes at least one refined, bleached and deodorized vegetable oil and at least one antioxidant, wherein the dielectric fluid composition has a pour point of less than about ?20° C. as measured according to either of ASTM D97 or ASTM D5950.
Type:
Grant
Filed:
May 17, 2007
Date of Patent:
August 12, 2014
Assignee:
Cooper Industries, LLC
Inventors:
Kevin J. Rapp, Charles Patrick McShane, Gary A. Gauger, Arthur W. Lemm
Abstract: A dielectric fluid comprising hydrocarbon liquid admixed with an ester-based compound, wherein the ester-based compound is present in an effective amount to impart breakdown inhibiting properties to a paper insulation material when the dielectric fluid is in contact with the paper material.
Type:
Grant
Filed:
December 21, 2012
Date of Patent:
December 31, 2013
Assignee:
Cooper Industries, LLC
Inventors:
Kevin J. Rapp, Jerry L. Corkran, Gary A. Gauger, Charles P. McShane
Abstract: A fitting for connecting conduit. The fitting includes a plurality of electrical conductors running through the fitting and a sealing compound that has been expanded within the fitting to separate the electrical conductors from each other and sides of the fitting. In a further embodiment, the fitting includes a plurality of conductors running through the fitting and a sealing compound that has been expanded within the fitting to separate the conductors from each other and sides of the fitting. The fitting includes a first plug that is secured within a first opening in the fitting such that the first plug is inserted into the first opening after the sealing compound is added to the fitting through the first opening.
Type:
Grant
Filed:
January 31, 2008
Date of Patent:
September 22, 2009
Assignee:
Cooper Industries, LLC
Inventors:
Paul S. Babiarz, William Bradley Delans