US3174077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker load center
Assignee: Murray Manufacturing Corp
•
Filing: 1959-04-28
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Granted: 1965-03-16
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Expires: 1979-04-28
Abstract
No abstract record available.
Inventors
- 👤 Erwin H Wippermann
- 👤 Carl E Brunner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:34
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/015; H02B1/04; H02B1/056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A LOAD CENTER INCLUDING MEANS FOR PREVENTING THE INTERCHANGEABILITY OF CIRCUIT INTERRUPTERS OF DIFFERENT RATING CLASSIFICATIONS, COMPRISING A PLURALITY OF CIRCUIT INTERRUPTERS, EACH HAVING A MOUNTING AND INCLUDING A FOOT PORTION AT THE BOTTOM THEREOF, THE FOOT PORTION INCLUDING A PAIR OF PROJECTIONS SEPARATED BY A RECESSED PORTION, AND A BAR HAVING AN INDENTIFICATION LUG OF SUCH DIMENSION AS TO EXTEND APPROXIMATELY TO THE END OF SAID PROJECTIONS AND TO COVER A GREATER OR LESSER AREA OF SAID RECESSED PORTION DEPENDING ON THE RATING OF SAID INTERRUPTER, WHEREBY A LUG COVERING HALF OF THE RECESSED PORTION INDICATES A FIRST RATING CLASSIFICATION AND A LUG COVERING SUBSTANTIALLY ALL OF THE RECESSED PORTION INDICATES A SECOND RATING CLASSIFICATION; A LOAD CENTER BASE ASSEMBLY HAVING A SUPPORTING SURFACE FOR SAID CIRCUIT INTERRUPTERS, THE SUPPORTING SURFACE HAVING A PLURALITY OF RAISED TABS, EACH OF THE TABS INCLUDING A RETAINING PORTION EXTENDING PARALLEL TO THE
Claim 2
Dependent Claim
150 words
A LOAD CENTER INCLUDING MEANS FOR PREVENTING THE INTERCHANGEABILITY OF CIRCUIT INTERRUPTERS OF DIFFERENT RATING CLASSIFICATIONS, COMPRISING A PLURALITY OF CIRCUIT INTERRUPTERS, EACH HAVING A MOUNTING AND INCLUDING A FOOT PORTION AT THE BOTTOM THEREOF, THE FOOT PORTION INCLUDING A PAIR OF PROJECTIONS SEPARATED BY A RECESSED PORTION, AND A BAR HAVING AN INDENTIFICATION LUG OF SUCH DIMENSION AS TO EXTEND APPROXIMATELY TO THE END OF SAID PROJECTIONS AND TO COVER A GREATER OR LESSER AREA OF SAID RECESSED PORTION DEPENDING ON THE RATING OF SAID INTERRUPTER, WHEREBY A LUG COVERING HALF OF THE RECESSED PORTION INDICATES A FIRST RATING CLASSIFICATION AND A LUG COVERING SUBSTANTIALLY ALL OF THE RECESSED PORTION INDICATES A SECOND RATING CLASSIFICATION; A LOAD CENTER BASE ASSEMBLY HAVING A SUPPORTING SURFACE FOR SAID CIRCUIT INTERRUPTERS, THE SUPPORTING SURFACE HAVING A PLURALITY OF RAISED TABS, EACH OF THE TABS INCLUDING A RETAINING PORTION EXTENDING PARALLEL TO THE
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |