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US3213218A
Expired / Lapsed
US
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Voidable interlocks for panelboard units
Assignee: ITE Circuit Breaker Co
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Filing: 1962-01-24
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Granted: 1965-10-19
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 John A Herrmann
- 👤 Darwin H Crall
- 👤 Gerald A Lively
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:27
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/20; H01H9/22; H01H9/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
A PANELBOARD UNIT COMPRISING A BOX HAVING A HOUSING AND A REMOVABLE COVER THEREOF, SAID COVER HAVING AN OUTER SURFACE AND AN INNER SURFACE, MEANS MOUNTING A HANDLE TO SAID OUTER SURFACE, MEANS MOUNTING A HANDLE OPERATING MECHANISM TO SAID INNER SURFACE, MEANS ROTATABLY POSITIONING SAID OPERATING MECHANISM RESPONSIVE TO MOVEMENT OF SAID HANDLE TO AN ON POSITION AND AN OFF POSITION, SAID HOUSING CONTAINING A PLURALITY OF ELECTRICAL CONTACT PAIRS, A CONTACT OPERATING MECHANISM AND A DOOR INTERLOCK ABUTMENT, SAID CONTACT PAIRS HAVING AN ON AND OFF POSITION, MEANS CONNECTING SAID CONTACT OPERATING MECHANISM TO SAID CONTACT PAIRS FOR SWITCHING SAID CONTACT PAIRS TO SAID POSITIONS; MEANS CONNECTING SAID CONTACT OPERATING MECHANISM TO SAID HANDLE OPERATING MECHANISM WHEREBY MOVEMENT OF SAID HANDLE TO ITS ON OR OFF POSITION WILL EFFECT CORRESPONDING MOVEMENT BETWEEN SAID CONTACT ON AND OFF POSITIONS, SAID HANDLE OPERATING MECHANISM CONTAINING A FORWARD PORTION, SAID INTERLOCK ABUTMENT BEING LOCATED BETWEEN SAID FORWARD PORTION AND SAID COVER WHEN SAID CONTACTS AND HANDLE ARE IN THE ON POSITION, SAID FORWARD PORTION BEING LOCATED IN ENGAGEMENT BELOW SAID INTERLOCK ABUTMENT WHEREBY SAID COVER IS PREVENTED FROM BEING REMOVED, A DOOR OPENING DEFEATER SYSTEM EXTERNALLY ACCESSIBLE VIA A DEFEATER SLOT, SAID DEFEATER SLOT BEING SHAPED TO RECEIVE A TOOL FOR RELEASING THE ENGAGEMENT OF SAID
Claim 2
Dependent Claim
215 words
A PANELBOARD UNIT COMPRISING A BOX HAVING A HOUSING AND A REMOVABLE COVER THEREOF, SAID COVER HAVING AN OUTER SURFACE AND AN INNER SURFACE, MEANS MOUNTING A HANDLE TO SAID OUTER SURFACE, MEANS MOUNTING A HANDLE OPERATING MECHANISM TO SAID INNER SURFACE, MEANS ROTATABLY POSITIONING SAID OPERATING MECHANISM RESPONSIVE TO MOVEMENT OF SAID HANDLE TO AN ON POSITION AND AN OFF POSITION, SAID HOUSING CONTAINING A PLURALITY OF ELECTRICAL CONTACT PAIRS, A CONTACT OPERATING MECHANISM AND A DOOR INTERLOCK ABUTMENT, SAID CONTACT PAIRS HAVING AN ON AND OFF POSITION, MEANS CONNECTING SAID CONTACT OPERATING MECHANISM TO SAID CONTACT PAIRS FOR SWITCHING SAID CONTACT PAIRS TO SAID POSITIONS; MEANS CONNECTING SAID CONTACT OPERATING MECHANISM TO SAID HANDLE OPERATING MECHANISM WHEREBY MOVEMENT OF SAID HANDLE TO ITS ON OR OFF POSITION WILL EFFECT CORRESPONDING MOVEMENT BETWEEN SAID CONTACT ON AND OFF POSITIONS, SAID HANDLE OPERATING MECHANISM CONTAINING A FORWARD PORTION, SAID INTERLOCK ABUTMENT BEING LOCATED BETWEEN SAID FORWARD PORTION AND SAID COVER WHEN SAID CONTACTS AND HANDLE ARE IN THE ON POSITION, SAID FORWARD PORTION BEING LOCATED IN ENGAGEMENT BELOW SAID INTERLOCK ABUTMENT WHEREBY SAID COVER IS PREVENTED FROM BEING REMOVED, A DOOR OPENING DEFEATER SYSTEM EXTERNALLY ACCESSIBLE VIA A DEFEATER SLOT, SAID DEFEATER SLOT BEING SHAPED TO RECEIVE A TOOL FOR RELEASING THE ENGAGEMENT OF SAID
References Cited (Backward Citations)
US2674666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |