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Patent US3876911A successfully refreshed from Google Patents.
US3876911A
Expired / Lapsed
US
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Fault indicator system for high voltage connectors
Assignee: EO Schweitzer Manufacturing Co LLC
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Filing: 1974-02-11
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Granted: 1975-04-08
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Expires: 1994-02-11
Abstract
Abstract The housing of a high voltage connector has embedded therein a Ushaped yoke of low coercive magnetic material embracing the conductor in the housing and having a magnetizing winding thereon connected to external terminals. Adjacent the ends of the yoke and also embedded in the housing is a reed switch which is closed when the yoke is magnetized. It is also connected to external terminals. A reset tool has external terminals connected across a chargeable capacitor for connection to the winding terminals for magnetizing the yoke and connected to a lamp in series with a current source for connection to the external terminals of the reed switch for detecting whether it occupies a closed or an open position.
Inventors
- 👤 Jr Edmund O Schweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:04
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/165; G01R19/16504; G01R19/16509; G01R19/145; G01R31/00; G01R31/50; H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/2445; Y; Y10; Y10S; Y10S174/00; Y10S174/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
Fault detecting connector means for interconnecting a high voltage alternating current conductor and a terminal comprising: an insulating housing, a conductor extension in said housing for connecting said conductor to said terminal, a yoke of low coercive magnetic material within said housing and embracing said conductor extension, winding means on said yoke for magnetizing it, switch means adjacent said yoke, said switch means occupying one position when said yoke is magnetized and an alternate position when said yoke is demagnetized by flow of fault current through said conductor extension, terminal means exterior to and mounted on said housing, and conductor means interconnecting said winding means and said switch means to said terminal means.
Claim 2
Dependent Claim
113 words
Fault detecting connector means for interconnecting a high voltage alternating current conductor and a terminal comprising: an insulating housing, a conductor extension in said housing for connecting said conductor to said terminal, a yoke of low coercive magnetic material within said housing and embracing said conductor extension, winding means on said yoke for magnetizing it, switch means adjacent said yoke, said switch means occupying one position when said yoke is magnetized and an alternate position when said yoke is demagnetized by flow of fault current through said conductor extension, terminal means exterior to and mounted on said housing, and conductor means interconnecting said winding means and said switch means to said terminal means.
Claim 3
Dependent Claim
33 words
Fault detecting connector means according to claim 1 wherein said housing is formed of moldable plastic and said yoke with said winding means thereon and said switch means are embedded in said housing.
Claim 4
Dependent Claim
30 words
Fault detecting connector means according to claim 1 wherein said terminal means exterior to said housing are connected to fault indicating means and to reset means for remagnetizing the yoke.
Claim 5
Dependent Claim
26 words
Fault detecting connector means according to claim 3 wherein said fault indicating means includes a current source and signalling means for connection across said switch means.
Claim 6
Dependent Claim
26 words
Fault detecting connector means according to claim 3 wherein said reset means includes a direct current source and a capacitor for connection across said winding means.
Claim 7
Dependent Claim
80 words
Fault detecting connector means according to claim 3 wherein said fault indicating means includes a series connectable direct current source and a signalling device, said reset means includes a capacitor connected to one terminal of said direct current source, and a manually operable switch is arranged to connect said series connected direct current source and said signalling device across said switch means and to connect said capacitor to another terminal of said direct current source and across said winding means.
Claim 8
Dependent Claim
40 words
Fault detecting connector means according to claim 1 wherein cable means connect said winding means and said switch means to terminal means remote from said housing for connection to fault indicating means and to reset means for magnetizing said yoke.
Claim 9
Dependent Claim
225 words
For combination with an insulating housing enclosing a high voltage alternating current conductor embraced by a yoke of low coercive magnetic material having reset winding means thereon, switch means adjacent said yoke having switch contacts operated from closed position to open position depending upon the magnetization or demagnetization of said yoke, and external contacts connected to said reset winding means and to said switch contacts; a combination indication and reset tool comprising an insulating tool housing having a pair of contacts for connection to said external contacts and across either said reset winding means or across said switch contacts of said switch means, a source of direct current in said tool housing having one terminal connected to one of said pair of contacts, signalling means carried by said tool housing and connected to the other of said pair of contacts, manually operable switch means for connecting said signalling means to another terminal of said source of direct current whereby said signalling means is energized when said pair of contacts engages said external contacts connected to said switch contacts and said switch contacts are closed, and capacitor means connected across said pair of contacts and charged when said manually operable switch means is closed whereby said reset winding means is energized and said pair of contacts engages said external contacts connected to said reset winding means.
Claim 10
Dependent Claim
225 words
For combination with an insulating housing enclosing a high voltage alternating current conductor embraced by a yoke of low coercive magnetic material having reset winding means thereon, switch means adjacent said yoke having switch contacts operated from closed position to open position depending upon the magnetization or demagnetization of said yoke, and external contacts connected to said reset winding means and to said switch contacts; a combination indication and reset tool comprising an insulating tool housing having a pair of contacts for connection to said external contacts and across either said reset winding means or across said switch contacts of said switch means, a source of direct current in said tool housing having one terminal connected to one of said pair of contacts, signalling means carried by said tool housing and connected to the other of said pair of contacts, manually operable switch means for connecting said signalling means to another terminal of said source of direct current whereby said signalling means is energized when said pair of contacts engages said external contacts connected to said switch contacts and said switch contacts are closed, and capacitor means connected across said pair of contacts and charged when said manually operable switch means is closed whereby said reset winding means is energized and said pair of contacts engages said external contacts connected to said reset winding means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |