US3823288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum interrupter capacitance discharge and contact grounding system
Assignee: ABB Inc USA
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Filing: 1972-11-01
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Granted: 1974-07-09
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Expires: 1992-11-01
Abstract
Abstract A vacuum interrupter capacitance discharge and contact grounding system for a withdrawal type telescoping circuit breaker mechanism wherein the interrupter is racked toward the frame of the structure to disconnect it and racked away from the frame to connect it in circuit; the frame carrying a plurality of flexible contact probes electrically connected to the frame which, in turn, has contacts engaging a grounding bus in the compartment. The flexible contact probes are individual to and aligned with a ring on the interrupter through which any capacitance may be discharged and with the respective terminals of the interrupter to discharge the capacitance and ground the terminals of the interrupter when the interrupter is racked to disconnect position and toward the frame.
Inventors
- 👤 G Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:53
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/666; H02; H02B; H02B11/00; H02B11/28; H01H33/662; H01H33/66238; H01H2033/66246
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
238 words
In a withdrawal type of interrupter having a main frame and an interrupter carrying frame with the main frame mountable in a compartment, the interrupter carrying frame being movable with respect to the main frame from a connected position of the interrupter remote from the main frame to the disconnected position of the interrupter adjacent the main frame; said interrupter having a pair of spaced terminal elements, a contact member on said main frame individual to each of said terminal elements, said terminal elements of said interrupter engaging their respective contact members when the interrupter carrying frame is moved to disconnect position with respect to said main frame, an electrical grounding connection between said contact members and said main frame; an additional grounding contact means carried by said main frame and a grounding bus in said compartment; said additional grounding contact means engaging said grounding bus when the main frame is in said compartment; said interrupter being capable of developing a capacitance charge, electrically conductive means external of the interrupter and participating in said capacitance charge; an additional contact member on said main frame substantially aligned with said first mentioned contact members and electrically connected to said main frame, said last mentioned electrically conductive means external of said interrupter being aligned with said additional contact member, and engaging said additional contact member when the interrupter carrying frame is moved to disconnect position with respect to said main frame.
Claim 2
Dependent Claim
238 words
In a withdrawal type of interrupter having a main frame and an interrupter carrying frame with the main frame mountable in a compartment, the interrupter carrying frame being movable with respect to the main frame from a connected position of the interrupter remote from the main frame to the disconnected position of the interrupter adjacent the main frame; said interrupter having a pair of spaced terminal elements, a contact member on said main frame individual to each of said terminal elements, said terminal elements of said interrupter engaging their respective contact members when the interrupter carrying frame is moved to disconnect position with respect to said main frame, an electrical grounding connection between said contact members and said main frame; an additional grounding contact means carried by said main frame and a grounding bus in said compartment; said additional grounding contact means engaging said grounding bus when the main frame is in said compartment; said interrupter being capable of developing a capacitance charge, electrically conductive means external of the interrupter and participating in said capacitance charge; an additional contact member on said main frame substantially aligned with said first mentioned contact members and electrically connected to said main frame, said last mentioned electrically conductive means external of said interrupter being aligned with said additional contact member, and engaging said additional contact member when the interrupter carrying frame is moved to disconnect position with respect to said main frame.
Claim 3
Dependent Claim
32 words
The withdrawal type of interrupter of claim 1 in which said contact members and said additional contact member are flexible resilient members projecting from the main frame toward the interrupter carrying frame.
Claim 4
Dependent Claim
43 words
The withdrawal type oF interrupter of claim 2 in which said additional grounding contact means on said main frame includes a pair of grounding contacts biased toward each other; said grounding contacts being located at and engaging opposite surfaces of the grounding bus.
Claim 5
Dependent Claim
138 words
The withdrawal type of interrupter of claim 3 in which the main frame supports the interrupter carrying frame; the main frame being movable into and out of said compartment, the compartment having a wall parallel to the path of movement of the main frame into and out of said compartment, said grounding bus being supported on said last mentioned wall, said grounding contacts being located on a portion of the main frame which initially enters said compartment when the withdrawal type of interrupter is inserted therein; said grounding contacts having cammed surfaces to receive the end of the grounding bus between them as the withdrawal type of interrupter is inserted therein; said grounding contacts maintaining a sliding electrical connection with said grounding bus as said withdrawal type of interrupter including its main frame is moved in the compartment.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |