US3742422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage resistor
Assignee: CTS Corp
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Filing: 1971-11-22
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Granted: 1973-06-26
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Expires: 1991-11-22
Abstract
Abstract A high voltage electrical resistor comprises a resistive path supported on a dielectric hollow cylindrical substrate, termination means electrically connected to the resistive path, an insulation system and a heat dissipation system. The high voltage end of the substrate is spaced from the wall of an insulative jacket by means of projections extending radially inwardly from the wall. The low voltage end of the substrate is spaced from the wall of the jacket by means of a heat dissipating mounting member. The termination means include insulated lead wires electrically connected to the resistive path with a lead wire adjacent the high voltage end of the substrate passing through a tubular projection of the jacket. A heat shrunk sleeve forms a tight seal between the tubular projection and the lead wire. Dielectric material fills the space between the substrate and the jacket forming a moisture impervious barrier around the resistive path and improving the dielectric strength of the resistor.
Inventors
- 👤 A Rozema
- 👤 C Osburn
- 👤 Benthuysen J Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:09
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/08; H01C1/02; H01C1/028; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
151 words
A high voltage resistor comprising a cylindrical housing of dielectric material having an inner wall extending longitudinally of the housing, a high heat resistant dielectric cylindrical substrate disposed within said housing, the substrate being provided with a cylindrical opening extending longitudinally through the substrate, a resistive path supported on the substrate, termination means electrically connected to the resistive path, said resistive path having a high voltage end and a low voltage end, positioning means for maintaining said high voltage end of the resistive path spaced from the wall of said housing, said positioning means being provided with at least one opening between said high voltage end of said resistive path and the wall of said housing, the cylindrical opening in the substrate communicating with the one opening, and dielectric material disposed between said resistive path and the wall of said housing and forming a moisture impervious barrier around said resistive path.
Claim 2
Dependent Claim
151 words
A high voltage resistor comprising a cylindrical housing of dielectric material having an inner wall extending longitudinally of the housing, a high heat resistant dielectric cylindrical substrate disposed within said housing, the substrate being provided with a cylindrical opening extending longitudinally through the substrate, a resistive path supported on the substrate, termination means electrically connected to the resistive path, said resistive path having a high voltage end and a low voltage end, positioning means for maintaining said high voltage end of the resistive path spaced from the wall of said housing, said positioning means being provided with at least one opening between said high voltage end of said resistive path and the wall of said housing, the cylindrical opening in the substrate communicating with the one opening, and dielectric material disposed between said resistive path and the wall of said housing and forming a moisture impervious barrier around said resistive path.
Claim 3
Dependent Claim
25 words
The high voltage resistor of claim 1, wherein said positioning means comprises a plurality of projections extending from said housing into engagement with said substrate.
Claim 4
Dependent Claim
26 words
The high voltage resistor of claim 2, wherein second positioning means spaces the resistive path at said low voltage end from the wall of the housing.
Claim 5
Dependent Claim
27 words
The high voltage resistor of claim 3, wherein said second positioning means comprises a mounting member bearing against said substrate and engaging the wall of said housing.
Claim 6
Dependent Claim
41 words
The high voltage resistor of claim 4, wherein said mounting member has a latching tab projecting outwardly from said housing and a screw tab having an aperture therethrough extending outwardly from said housing for securing said resistor to a mounting panel.
Claim 7
Dependent Claim
36 words
The high voltage resistor of claim 5, wherein said latching tab has an angled portion bent at an angle to said mounting member and a lateral portion extending outwardly of said housing from said angled portion.
Claim 8
Dependent Claim
41 words
The high voltage resistor of claim 4, wherein a thermally conductive bonding material secures the mounting member and substrate in fixed assembled relationship, said bonding material providing a thermally conductive path for dissipating heat from the substrate to the mounting member.
Claim 9
Dependent Claim
54 words
The high voltage resistor of claim 1, wherein said housing has an aperture in one end and an opening in the other end, said termination means including an insulated lead wire electrically connected to said resistive path adjacent said high voltage end and projecting through said aperture, said lead wire substantially sealing said aperture.
Claim 10
Dependent Claim
38 words
The high voltage resistor of claim 8, wherein said housing is provided with a tubular projection defining said aperture, and a sleeve is disposed over said projection and engages said insulated lead wire to completely seal said aperture.
Claim 11
Dependent Claim
32 words
The high voltage resistor of claim 8, wherein said housing is provided with a tubular projection defining said aperture, and said tubular projection is welded to the insulation of said insulated wire.
Claim 12
Dependent Claim
41 words
The high voltage resistor of claim 8, wherein second positioning means is prOvided for maintaining the resistive path at said low voltage end spaced from the wall of said housing and comprises a mounting member electrically connected to said resistance path.
Claim 13
Dependent Claim
48 words
The high voltage resistor of claim 2, wherein said termination means includes an insulated lead wire electrically connected to the resistive path adjacent said high voltage end, the point of electrical connection between the insulated lead wire and the resistive path being positioned between two of said projections.
Claim 14
Dependent Claim
53 words
The high voltage resistor of claim 1, wherein said termination means includes a tap comprising an insulated lead wire electrically connected to the resistive path intermediate the high voltage end and the low voltage end, said substrate providing a continuous heat transfer path from said high voltage end to said low voltage end.
Claim 15
Dependent Claim
31 words
The high voltage resistor of claim 13, wherein said insulated lead wire is disposed adjacent said resistive path and passes between the wall of the housing and said low voltage end.
Claim 16
Dependent Claim
58 words
The high voltage resistor of claim 2, wherein said termination means includes an insulated lead wire electrically connected to said resistive path adjacent said high voltage end, said projections spacing the point of electrical connection between the lead wire and the resistive path from the wall of the housing, said dielectric material surrounding the point of electrical connection.
Claim 17
Dependent Claim
34 words
The high voltage resistor of claim 15, wherein said housing has an indicator lug projecting therefrom indicating the position of said projections whereby said insulated lead wire is accurately positioned relative to said projections.
Claim 18
Dependent Claim
193 words
A high voltage resistor comprising a cylindrical housing of dielectric material, a high heat resistant dielectric cylindrical substrate disposed within said housing, a resistive path supported on the substrate, termination means electrically connected to the resistive path, said substrate having a high voltage end and a low voltage end, said housing having an aperture in one end and an opening in the other end, a plurality of projections extending from said housing adjacent said one end into engagement with said substrate adjacent said high voltage end whereby said resistive path at said high voltage end is spaced from the wall of the housing, said termination means including an insulated lead wire electrically connected to said resistive path adjacent said high voltage end, said insulated lead wire passing through and substantially sealing said aperture, a mounting member bearing against said low voltage end and frictionally engaging the housing adjacent said other end maintaining the resistive path at said low voltage end spaced from the wall of the housing, and dielectric material positioned between said resistive path and the wall of said housing, said dielectric material forming a moisture impervious barrier around said resistive path.
Claim 19
Dependent Claim
193 words
A high voltage resistor comprising a cylindrical housing of dielectric material, a high heat resistant dielectric cylindrical substrate disposed within said housing, a resistive path supported on the substrate, termination means electrically connected to the resistive path, said substrate having a high voltage end and a low voltage end, said housing having an aperture in one end and an opening in the other end, a plurality of projections extending from said housing adjacent said one end into engagement with said substrate adjacent said high voltage end whereby said resistive path at said high voltage end is spaced from the wall of the housing, said termination means including an insulated lead wire electrically connected to said resistive path adjacent said high voltage end, said insulated lead wire passing through and substantially sealing said aperture, a mounting member bearing against said low voltage end and frictionally engaging the housing adjacent said other end maintaining the resistive path at said low voltage end spaced from the wall of the housing, and dielectric material positioned between said resistive path and the wall of said housing, said dielectric material forming a moisture impervious barrier around said resistive path.
Claim 20
Independent Claim
171 words
The method of manufacturing a high voltage resistor comprising the steps of: depositing a resistance material on a hollow dielectric cylindrical substrate thereby defining a resistive path, applying termination means to said resistive path, securing a mounting bracket having an aperture therein to one end of said substrate with said aperture being in communication with the interior of said substrate, centering said substrate relative to the walls of a cylindrical housing of dielectric material having an aperture in one end and an opening of sufficient size to receive said substrate in the other end, positioning said substrate within said housing with said one end of said substrate adjacent said opening, said mounting bracket being in frictional engagement with said housing, said resistive path being spaced from the walls of said housing, sealing substantially the aperture in said housing, and injecting a dielectric material through the aperture in said mounting bracket whereby said material passes through said substrate and enters the space between the Resistive path and the walls of said housing.
Claim 21
Independent Claim
171 words
The method of manufacturing a high voltage resistor comprising the steps of: depositing a resistance material on a hollow dielectric cylindrical substrate thereby defining a resistive path, applying termination means to said resistive path, securing a mounting bracket having an aperture therein to one end of said substrate with said aperture being in communication with the interior of said substrate, centering said substrate relative to the walls of a cylindrical housing of dielectric material having an aperture in one end and an opening of sufficient size to receive said substrate in the other end, positioning said substrate within said housing with said one end of said substrate adjacent said opening, said mounting bracket being in frictional engagement with said housing, said resistive path being spaced from the walls of said housing, sealing substantially the aperture in said housing, and injecting a dielectric material through the aperture in said mounting bracket whereby said material passes through said substrate and enters the space between the Resistive path and the walls of said housing.
Claim 22
Dependent Claim
36 words
The method of claim 18, wherein the step of applying termination means to said resistive path comprises securing an insulated lead wire to the other end of said substrate in electrical connection with said resistive path.
Claim 23
Dependent Claim
47 words
The method of claim 19, wherein the step of centering the substrate relative to the walls of a cylindrical housing comprises nesting the other end of the substrate against a plurality of projections in the housing with said insulated lead wire disposed between two of said projections.
Claim 24
Dependent Claim
27 words
The method of claim 19, wherein the step of sealing substantially the aperture in said housing comprises placing said lead wire through the aperture in said housing.
Claim 25
Dependent Claim
59 words
The method of claim 21, wherein the housing is provided with a tubular projection defining said aperture in the one end of the housing, and including the additional steps of applying a heat shrinkable tubing over said lead wire and the projection, and shrinking said tubing into engagement with the tubing and the lead wire to seal the aperture.
Claim 26
Dependent Claim
41 words
The method of claim 21, wherein the housing is provided with a tubular projection defining said aperture in the one end of the housing, and including the additional step of welding said projection to the insulation of said insulated lead wire.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |