Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
135 words
An electric surge arrester comprising a housing, a plurality of stacked varistor blocks in said housing, a pair of terminals extending through apertures formed in said housing and respectively connected to the end ones of said stacked varistor blocks, an electrode disposed in spaced coaxial alignment with said stacked blocks and interposed between one of said terminals and the adjacent one of said varistor blocks to establish a gap between said electrode and the adjacent part of said adjacent one of said varistor blocks, and shunt means interconnected with said electrode and with a part of said adjacent block remote from said electrode so as to provide a by-pass shunt circuit around said adjacent varistor block in coordination with the development of an overvoltage surge condition and the establishment of an arc across said gap.
Claim 2
Dependent Claim
135 words
An electric surge arrester comprising a housing, a plurality of stacked varistor blocks in said housing, a pair of terminals extending through apertures formed in said housing and respectively connected to the end ones of said stacked varistor blocks, an electrode disposed in spaced coaxial alignment with said stacked blocks and interposed between one of said terminals and the adjacent one of said varistor blocks to establish a gap between said electrode and the adjacent part of said adjacent one of said varistor blocks, and shunt means interconnected with said electrode and with a part of said adjacent block remote from said electrode so as to provide a by-pass shunt circuit around said adjacent varistor block in coordination with the development of an overvoltage surge condition and the establishment of an arc across said gap.
Claim 3
Dependent Claim
33 words
An arrester according to claim 1 wherein each of said varistor blocks other than said adjacent one of said blocks is arranged with its outer periphery in heat exchanging contact with said housing.
Claim 4
Dependent Claim
37 words
An arrester according to claim 1 wherein a conductive base plate is interposed between said electrode and said adjacent one of said varistor blocks and is in conductive contact with said adjacent one of said varistor blocks.
Claim 5
Dependent Claim
21 words
An arrester according to claim 3 wherein said conductive base plate is electrically connected with the adjacent one of said terminals.
Claim 6
Dependent Claim
21 words
An arrester according to claim 1 wherein an external terminal plate is mounted on said housing at each of said terminals.
Claim 7
Dependent Claim
33 words
An arrester according to claim 5 wherein said external terminal plates are formed with weakened severance parts for relieving internal pressure within the arrester housing which is in excess of a predetermined pressure.
Claim 8
Dependent Claim
34 words
An arrester according to claim 3 wherein a plurality of insulators are interposed between said electrode and said conductive base plate for securing said electrode and said conductive base plate in spaced insulated relation.
Claim 9
Dependent Claim
49 words
An arrester according to claim 1 wherein a conductive end plate is connected with the adjacent one of said terminals and wherein a plurality of insulators are interposed between said conductive end plate and said electrode for securing said conductive end plate and said electrode in spaced insulated relation.
Claim 10
Dependent Claim
19 words
An arrester according to claim 8 wherein said conductive end plate is electrically connected with said conductive base plate.