Shorting cage for protector wells

Claim 2

An overvoltage surge arrester apparatus for protecting communication lines and equipment connected thereto from voltage surges comprising: (a) a housing of insulating material having at least one well-type aperture disposed therein, said well-type aperture being provided with a first electrode adapted to be connected to earth ground and disposed at the closed end thereof having an upwardly extending portion and a second electrode disposed about the periphery of the open end of said well-type aperture, said second electrode being adapted to be connected to one of said communication lines; (b) a hollow, electrically conductive shorting cage adapted to be received into said well-type aperture, said shorting cage being in continuous intimate electrical contact with said second electrode and having at least one inwardly extending finger portion adapted to be in electrically conductive contact with said upwardly extending portion of said first electrode; and (c) a protector cartridge including an electrically conductive shell adapted to be received into said hollow shorting cage and be in electrically conductive contact at the upper portion thereof providing electrically conductive contact with a protective device disposed within said shell, one terminal of said protective device extending downwardly beyond said shell and being adapted to be in electrical contact with said upwardly extending portion of said first electrode when in position in said shorting cage, said protector cartridge shell displacing the inwardly extending finger portion of said shorting cage causing it to be out of electrically conductive contact with said upwardly extending portion of said first electrode when in position in the well-type aperture.

Claim 3

An overvoltage surge arrester according to claim 1 wherein said second electrode is provided with a threaded portion and is adapted to receive and cooperate with a threaded portion provided at the upper portion of said shorting cage, and said shorting cage threaded portion is also adapted to receive a threaded portion provided on the shell of said protector cartridge.

Claim 4

An overvoltage surge arrester according to claim 1 wherein said shorting cage is provided with a plurality of inwardly extending finger portions.

Claim 5

An overvoltage surge arrester according to claim 1 wherein said shorting cage is provided with means for accurately determining its depth within said well-type aperture.

Claim 6

An overvoltage surge arrester according to claim 1 wherein said shorting cage includes retaining means for retaining said cage in position in said well-type aperture when said protector cartridge is removed therefrom.

Claim 7

An overvoltage surge arrester according to claims 1, 2, 3, 4 or 5 wherein said well-type aperture, said shorting cage and said protector cartridge are cylindrically-shaped.

Claim 8

An overvoltage surge arrester apparatus for providing communication lines and equipment connected thereto from voltage surges having a housing of insulating material with at least one well-type aperture disposed therein, said well-type aperture being provided with a first electrode disposed at the closed end thereof having an upwardly extending portion adapted to be connected to earth ground and a second electrode disposed about the periphery of the open end of said well-type aperture, said second electrode being adapted to be connected to one of said communication lines and a protector cartridge including an electrically conductive shell adapter to be received into said well-type aperture and be in electrically conductive contact at the upper portion thereof providing electrically conductive contact with a protective device disposed within said shell, one terminal of said protective device extending downwardly and being adapted to be in electrical conductive contact with said upwardly extending portion of said first electrode when in position in said well-type aperture, the improvement comprising, a hollow, electrically conductive shorting cage adapted to be received into said well-type aperture disposed between said second electrode and said protector cartridge shell, said shorting cage being in continuous intimate electrical contact with said second electrode and having at least one inwardly extending finger portion adapted to be in electrically conductive contact with said upwardly extending portion of said first electrode, said protector cartridge having one terminal of said protective device extending downwardly beyond said shell and being in contact with the upwardly extending portion of said first electrode and displacing said shorting cage finger portion out of contact with said first electrode extending portion when said protector is in position.

Claim 9

An overvoltage surge arrester apparatus for providing communication lines and equipment connected thereto from voltage surges having a housing of insulating material with at least one well-type aperture disposed therein, said well-type aperture being provided with a first electrode disposed at the closed end thereof having an upwardly extending portion adapted to be connected to earth ground and a second electrode disposed about the periphery of the open end of said well-type aperture, said second electrode being adapted to be connected to one of said communication lines and a protector cartridge including an electrically conductive shell adapter to be received into said well-type aperture and be in electrically conductive contact at the upper portion thereof providing electrically conductive contact with a protective device disposed within said shell, one terminal of said protective device extending downwardly and being adapted to be in electrical conductive contact with said upwardly extending portion of said first electrode when in position in said well-type aperture, the improvement comprising, a hollow, electrically conductive shorting cage adapted to be received into said well-type aperture disposed between said second electrode and said protector cartridge shell, said shorting cage being in continuous intimate electrical contact with said second electrode and having at least one inwardly extending finger portion adapted to be in electrically conductive contact with said upwardly extending portion of said first electrode, said protector cartridge having one terminal of said protective device extending downwardly beyond said shell and being in contact with the upwardly extending portion of said first electrode and displacing said shorting cage finger portion out of contact with said first electrode extending portion when said protector is in position.

Claim 10

The overvoltage surge arrester apparatus according to claim 7 wherein said shorting cage is provided with a threaded upper portion adapted to mate and cooperate with threaded portions provided on said second electrode and said protector cartridge shell.

Claim 11

An overvoltage surge arrester apparatus according to claim 7 wherein said shorting cage is provided with retaining means for retaining said cage in position in said well-type aperture when said protector cartridge is removed therefrom.