US3740701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective connector devices
Assignee: General Electric Co
•
Filing: 1971-12-22
•
Granted: 1973-06-19
•
Expires: 1991-12-22
Abstract
Abstract At least one of the elongated electrodes of a protective connector are provided with elongated extensions of metal oxide varistor material. The metal oxide varistor material has an alpha in excess of 10 in the current density range of 10 3 to 102 amperes per square centimeter. Accordingly, when the electrodes are disengaged from the electrodes of a mating connector, the metal oxide varistor extension of the protective connector is the last to be disengaged from the electrodes of the mating connector, thereby placing such an extension in series with any discharge currents and thus limiting the magnitude of any voltage developed by the disengagement of the connectors.
Inventors
- 👤 J Harnden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:36
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/12; H01C7/102; H01R; H01R13/00; H01R13/46; H01R13/53
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
33 words
The combination of claim 1 in which said metal oxide varistor material has an alpha in excess of 10 in the current density range of 10 3 to 102 amperes per square centimeter.
Claim 2
Dependent Claim
58 words
The combination of claim 1 in which said member of metal oxide varistor material limits the voltage between said elongated electrode and said mating conductor to a low value when they are initially disengaged determined by the separation of said elongated electrode from said mating conductor and by the voltage gradient versus current density characteristic of said Material.
Claim 3
Dependent Claim
77 words
The combination of claim 1 in which the other of said electrodes is an elongated electrode, one end of said other elongated electrode adapted to engage another mating conductor, the other end of said other electrode being provided with means for connecting said other electrode in circuit, another member of metal oxide varistor material in contact with said other elongated electrode and extending said one end thereof, the longitudinal axes of said elongated electrodes being substantially parallel.
Claim 4
Dependent Claim
33 words
The combination of claim 4 in which said members of metal oxide varistor material are elongated slabs in which the longitudinal axes thereof are parallel to the longitudinal axis of said elongated electrodes.
Claim 5
Dependent Claim
47 words
The combination of claim 4 in which said members of metal oxide varistor material are surface adjacent portion of a block of metal oxide varistor material in contact with adjacent opposed surfaces of the conductive electrodes, said block extending beyond said one end of said conductive electrodes.
Claim 6
Dependent Claim
25 words
The combination of claim 4 in which said members of metal oxide varistor material are elongated members secured to the ends of said elongated electrodes.
References Cited (Backward Citations)
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Cited
US2097370A
Cited
US2508551A
Cited
US2511192A
Cited
US3111641A
Cited
US3414806A
Cited
US3553628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |