Patent US3566183A successfully refreshed from Google Patents.
US3566183A
Expired / Lapsed
US
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Lightning arrester cooling apparatus
Assignee: General Electric Co
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Filing: 1968-07-11
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Granted: 1971-02-23
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Expires: 1988-07-11
Abstract
Abstract A lightning arrester having voltage-grading resistors that generate heat due to leakage currents therethrough, in combination with heat exchanger means adapted to cool the grading resistors and other internal components. In one form of the invention the grading resistors are biased into contact with the interior wall of the insulating housing of the lightning arrester by resilient spring means to assure optimum thermal conduction between the resistors and the housing.
Inventors
- 👤 Arthur A Olsen
- 👤 Vale P Myler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:20
CPC Classifications
H; H01; H01T; H01T4/00; H01T4/16; B; B62; B62D; B62D7/00; B62D7/16; H02; H02B; H02B3/00
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
145 words
A lightning arrester having an insulating hollow housing, a pair of end cap terminals mounted respectively over opposed ends of said housing thereby to seal the housing, a plurality of operating components mounted within said housing and electrically connected to form a normally nonconducting surge voltage discharge circuit between said terminals, said discharge circuit being conductive only when a voltage in excess of a predetermined sparkover voltage rating of the arrester is applied to one of said terminals, means defining a second series circuit between said terminals, said second series circuit being normally conductive when a predetermined operating voltage that is smaller than the sparkover voltage of the arrester is applied to said terminals to create a voltage gradient therebetween, in combination with means for removing heat from the interior of said arrester housing when heat is developed by current through said second series circuit.
Claim 2
Dependent Claim
145 words
A lightning arrester having an insulating hollow housing, a pair of end cap terminals mounted respectively over opposed ends of said housing thereby to seal the housing, a plurality of operating components mounted within said housing and electrically connected to form a normally nonconducting surge voltage discharge circuit between said terminals, said discharge circuit being conductive only when a voltage in excess of a predetermined sparkover voltage rating of the arrester is applied to one of said terminals, means defining a second series circuit between said terminals, said second series circuit being normally conductive when a predetermined operating voltage that is smaller than the sparkover voltage of the arrester is applied to said terminals to create a voltage gradient therebetween, in combination with means for removing heat from the interior of said arrester housing when heat is developed by current through said second series circuit.
Claim 3
Dependent Claim
17 words
An invention as defined in claim 1 wherein said means comprises heat exchanger means for removing heat.
Claim 4
Dependent Claim
44 words
An invention as defined in claim 2 wherein said lightning arrester comprises an insulating housing having a sealed compartment therein, and said heat exchanger means comprises at least one fluid-conducting passageway disposed in heat-exchanging relation with both the interior and exterior of said compartment.
Claim 5
Dependent Claim
14 words
An invention as defined in claim 3 wherein said passageway extends into said compartment.
Claim 6
Dependent Claim
29 words
An invention as defined in claim 3 wherein said passageway is sealed with respect to said compartment to prevent an exchange of fluid between said passage and said compartment.
Claim 7
Dependent Claim
30 words
An invention as defined in claim 1 wherein said means is a fluid-moving means adapted to control the flow of a coolant in heat exchange relation with said lightning arrester.
Claim 8
Dependent Claim
29 words
An invention as defined in claim 6 wherein said fluid-moving means comprises at least one fan mounted in proximity to said lightning arrester, and wherein said coolant is air.
Claim 9
Dependent Claim
21 words
An invention as defined in claim 6 in combination with control means for controlling the actuation of said fluid moving means.
Claim 10
Dependent Claim
17 words
An invention as defined in claim 8 wherein said control means is operatively responsive to temperature variations.
Claim 11
Dependent Claim
54 words
An invention as defined in claim 9 in combination with sensing means for sensing temperature variations at least one predetermined point adjacent said lightning arrester, and means operatively coupling said sensing means to said control means thereby to cause said control means to be responsive to temperature variations at at least said predetermined point.
Claim 12
Dependent Claim
37 words
An invention as defined in claim 1 wherein said means comprises a fluid atmosphere confined within said lightning arrester and adapted to improve the transfer of heat from the interior of said arrester to the exterior thereof.
Claim 13
Dependent Claim
15 words
An invention as defined in claim 11 wherein said fluid comprises a mixture of gases.
Claim 14
Dependent Claim
15 words
An invention as defined in claim 11 wherein said fluid comprises an electrically insulating liquid.
Claim 15
Dependent Claim
72 words
A lightning arrester including a hollow insulating housing, means for sealing said housing to define a substantially fluidtight compartment therein, a plurality of series-connected spArk gaps and at least one block of nonlinear resistance material electrically connected in series conducting relation therewith within said compartment, in combination with voltage grading means for distributing voltage across said spark gaps in a predetermined manner, and means for removing heat from said voltage grading means.
Claim 16
Dependent Claim
72 words
A lightning arrester including a hollow insulating housing, means for sealing said housing to define a substantially fluidtight compartment therein, a plurality of series-connected spArk gaps and at least one block of nonlinear resistance material electrically connected in series conducting relation therewith within said compartment, in combination with voltage grading means for distributing voltage across said spark gaps in a predetermined manner, and means for removing heat from said voltage grading means.
Claim 17
Dependent Claim
61 words
A lightning arrester as defined in claim 14 wherein said voltage-grading means comprises a plurality of electrical impedance means, each of said impedance means being electrically connected in parallel respectively with at least one of said spark gaps, and wherein said means for removing heat comprises holding means for holding said impedance means in heat exchange relation with said insulating housing.
Claim 18
Dependent Claim
35 words
A lightning arrester as defined in claim 15 wherein said holding means comprises a spring means mounted within said insulating housing and adapted to bias each of said impedance means into said heat exchange relation.
Claim 19
Dependent Claim
55 words
A lightning arrester as defined in claim 16 wherein each of said impedance means comprises a plurality of nonlinear resistance blocks, and said spring means comprises a plurality of separate springs each respectively disposed between at least two of said blocks to bias them toward a position such that said heat exchange relation is enhanced.
Claim 20
Dependent Claim
53 words
A lightning arrester having a tubular insulating housing, a plurality of nonlinear resistance blocks, an annular insulating member disposed within said housing and adapted to support said blocks in spaced-apart relation around the periphery thereof, and spring means adapted to bias each of said blocks into heat exchange relation with said insulating housing.
Claim 21
Dependent Claim
53 words
A lightning arrester having a tubular insulating housing, a plurality of nonlinear resistance blocks, an annular insulating member disposed within said housing and adapted to support said blocks in spaced-apart relation around the periphery thereof, and spring means adapted to bias each of said blocks into heat exchange relation with said insulating housing.
Claim 22
Dependent Claim
31 words
A lightning arrester as defined in claim 18 in which thermally conductive material is positioned respectively between said housing and each of said blocks to improve the conduction of heat therebetween.
Claim 23
Dependent Claim
30 words
A lightning arrester as defined in claim 19 wherein said material is an epoxy having a coefficient of thermal expansion between the related coefficients of said blocks and said housing.
Claim 24
Dependent Claim
41 words
In combination, a plurality of lightning arresters as defined in claim 2 each having an insulating housing and heat-generating means disposed therein, and including heat exchange means for transferring heat between the interior and the exterior of each of said housings.
Claim 25
Dependent Claim
52 words
A combination as defined in claim 21 wherein said heat exchange means comprises at least one fluid conducting passageway disposed in heat exchange relation with the interior of each of said housings and the exterior thereof, a fluid disposed in said passageway, and fluid-moving means for circulating said fluid through said passageway.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |