US4034360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for disabling the reset circuit of fault indicating means
Assignee: Individual
•
Filing: 1976-08-06
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Granted: 1977-07-05
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Expires: 1996-08-06
Abstract
Abstract The reset circuit of a fault indicator is disabled to prevent automatic restoration of the movable target from fault indicating position where it can be observed and manually rest. A manually operable switch is connected across the reset ciruit and its contacts are closed by permanent magnet means or by manually operable switch means.
Inventors
- 👤 Edmund O. Schweitzer, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:22
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/165; G01R19/16504; G01R19/16509; G01R19/145
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
98 words
Fault indicating means responsive to flow of fault current in an electrical distribution system comprising: indicator means movable from one position to another position on flow of fault current in said system, a trip circuit responsive to flow of fault current in said system to shift said indicator means from said one position to said other position, a reset circuit to shift said indicator means automatically back to said one position on restoration of said system to normal operating condition; and manually operable means for disabling said reset circuit to maintain said indicator means in said one position.
Claim 2
Dependent Claim
98 words
Fault indicating means responsive to flow of fault current in an electrical distribution system comprising: indicator means movable from one position to another position on flow of fault current in said system, a trip circuit responsive to flow of fault current in said system to shift said indicator means from said one position to said other position, a reset circuit to shift said indicator means automatically back to said one position on restoration of said system to normal operating condition; and manually operable means for disabling said reset circuit to maintain said indicator means in said one position.
Claim 3
Dependent Claim
22 words
Fault indicating means according to claim 1 wherein said disabling means includes switch means connected across a portion of said reset circuit.
Claim 4
Dependent Claim
31 words
Fault indicating means according to claim 2 wherein said switch means includes magnetically operable contacts, and means generating a magnetic field is juxtaposed to said switch means to close said contacts.
Claim 5
Dependent Claim
36 words
Fault indicating means according to claim 2 wherein a permanent magnet is movably mounted adjacent said switch means and is arranged in one position to close said contacts and in another position to open said contacts.
Claim 6
Dependent Claim
16 words
Fault indicating means according to claim 4 wherein said permanent magnet is pivoted intermediate its ends.
Claim 7
Dependent Claim
16 words
Fault indicating means according to claim 4 wherein said permanent magnet is pivoted at one end.
Claim 8
Dependent Claim
25 words
Fault indicating means according to claim 2 wherein said switch means includes: normally open contact means, and manually operable means for closing said contact means.
Claim 9
Dependent Claim
22 words
Fault indicating means according to claim 7 wherein over-center toggle means cooperates with said manually operable means for closing said contact 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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |