Patent US3281555A successfully refreshed from Google Patents.
US3281555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protectors for electric circuits
Assignee: McGraw Edison Co
•
Filing: 1962-09-07
•
Granted: 1966-10-25
•
Expires: 1982-09-07
Abstract
No abstract record available.
Inventors
- 👤 Aloysius J Fister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:03
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/04; H01H85/041; H01H85/044; H01H85/045; H01H85/0452; H01R; H01R13/00; H01R13/66; H01R13/68; H01H2085/0233; H01H85/0013; H01H85/0017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
496 words
AN ELECTRIC FUSE THAT COMPRISES: (A) A HOUSING, (B) SAID HOUSING BEING HOLLOW AND HAVING A PLURALITY OF PARTITIONS THEREIN TO FORM A PLURALITY OF RECESSES THEREIN, (C) SAID RECESSES HAVING OPENINGS IN THE BOTTOMS THEREOF WHICH COMMUNICATE WITH THE BOTTOM SURFACE OF SAID HOUSING, (D) A PLURALITY OF ELECTRIC FUSE UNITS DISPOSED IN SAID PLURALITY OF RECESSES IN SAID HOUSING, (E) EACH OF SAID ELECTRIC FUSE UNITS HAVING A PAIR OF TERMINALS AND A PLURALITY OF FUSIBLE ELEMENTS, (F) THE TERMINALS OF SAID ELECTRIC FUSE UNITS HAVING PRONGS ON THE LOWER ENDS THEREOF WHICH EXTEND THROUGH SAID OPENINGS IN THE BOTTOMS OF SAID RECESSES AND WHICH SERVE AS "PLUG IN" TERMINALS FOR SAID ELECTRIC FUSE, (G) SAID FUSIBLE ELEMENTS BEING SECURED TO SAID PAIRS OF TERMINALS BEFORE SAID ELECTRIC FUSE UNITS ARE TELESCOPED INTO SAID RECESSES IN SAID HOUSING, (H) SAID RECESSES IN SAID HOUSING BEING FORMED SO SAID TERMINALS OF SAID ELECTRIC FUSE UNITS ARE MOVED IN DIRECTIONS WHICH ARE GENERALLY PARALLEL TO THE AXES OF SAID TERMINALS AS SAID ELECTRIC FUSE UNITS ARE TELESCOPED INTO SAID RECESSES, (I) SAID RECESSES HAVING SURFACES THEREIN WHICH ENGAGE THE SIDES OF THE TERMINALS OF SAID ELECTRIC FUSE UNITS TO HOLD SAID ELECTRIC FUSE UNITS SOLIDLY AGAINST SIDEWAYS MOVEMENT RELATIVE TO SAID HOUSING AND WHICH PERMIT ENDWISE MOVEMENT OF SAID ELECTRIC FUSE UNITS AFTER SAID ELECTRIC FUSE UNITS ARE TELESCOPED WITHIN SAID RECESSES, (J) EACH OF SAID ELECTRIC FUSE UNITS BEING ADAPTED TO PROTECT A DIFFERENT ELECTRIC CIRCUIT, (K) THE TOP OF SAID HOUSING BEING OPEN BUT NORMALLY BEING CLOSED BY A CLOSURE, (L) SEALS THAT SURROUND AND ENGAGE SAID PRONGS OF SAID TERMINALS OF SAID ELECTRIC FUSE UNITS AND THAT ENGAGE THE INNER SURFACES OF SAID RECESSES AND THAT COACT WITH SAID PRONGS TO CLOSE AND SEAL SAID OPENINGS IN THE BOTTOMS OF SAID RECESSES, (M) ARC-QUENCHING FILLER MATERIAL DISPOSED WITHIN SAID RECESSES, (N) SAID ELECTRIC FUSE UNITS BEING OPEN IN NATURE SO SAID ARC-QUENCHING FILLER MATERIAL CAN FLOW FREELY INTO ENGAGEMENT WITH SAID FUSIBLE ELEMENTS OF SAID ELECTRIC FUSE UNITS AFTER SAID ELECTRIC FUSE UNITS HAVE BEEN TELESCOPED INTO SAID RECESSES, AND (O) A PLATE OF RESILIENT MATERIAL THAT UNDERLIES SAID CLOSURE AND OVERLIES THE UPPER ENDS OF SAID TERMINALS OF SAID ELECTRIC FUSE UNITS AND OVERLIES SAID ARCQUENCHING FILLER MATERIAL WHEN SAID ELECTRIC FUSE UNITS ARE TELESCOPED WITHIN SAID RECESSES, (P) SAID CLOSURE BEING HELD IN SUFFICIENTLY INTIMATE ENGAGEMENT WITH SAID HOUSING TO COMPRESS SAID PLATE OF RESILIENT MATERIAL, (Q) SAID PLATE OF RESILIENT MATERIAL APPLYING PRESSURE TO SAID ARC-QUENCHING FILLER MATERIAL AND FORCING SAID ARC-QUENCHING FILLER MATERIAL INTO INTIMATE ENGAGEMENT WITH SAID FUSIBLE ELEMENTS OF SAID ELECTRIC FUSE UNITS, (R) SAID SEALS APPLYING PRESSURE TO SAID TERMINALS TO URGE SAID TERMINALS TOWARD SAID TOP OF SAID HOUSING, (S) SAID PLATE OF RESILIENT MATERIAL APPLYING PRESSURE TO SAID TERMINALS TO URGE SAID TERMINALS TOWARD SAID BOTTOMS OF SAID RECESSES AND COACTING WITH SAID SEALS TO RESILIENTLY MOUNT SAID ELECTRIC FUSE UNITS WITHIN SAID RECESSES.
Claim 2
Dependent Claim
496 words
AN ELECTRIC FUSE THAT COMPRISES: (A) A HOUSING, (B) SAID HOUSING BEING HOLLOW AND HAVING A PLURALITY OF PARTITIONS THEREIN TO FORM A PLURALITY OF RECESSES THEREIN, (C) SAID RECESSES HAVING OPENINGS IN THE BOTTOMS THEREOF WHICH COMMUNICATE WITH THE BOTTOM SURFACE OF SAID HOUSING, (D) A PLURALITY OF ELECTRIC FUSE UNITS DISPOSED IN SAID PLURALITY OF RECESSES IN SAID HOUSING, (E) EACH OF SAID ELECTRIC FUSE UNITS HAVING A PAIR OF TERMINALS AND A PLURALITY OF FUSIBLE ELEMENTS, (F) THE TERMINALS OF SAID ELECTRIC FUSE UNITS HAVING PRONGS ON THE LOWER ENDS THEREOF WHICH EXTEND THROUGH SAID OPENINGS IN THE BOTTOMS OF SAID RECESSES AND WHICH SERVE AS "PLUG IN" TERMINALS FOR SAID ELECTRIC FUSE, (G) SAID FUSIBLE ELEMENTS BEING SECURED TO SAID PAIRS OF TERMINALS BEFORE SAID ELECTRIC FUSE UNITS ARE TELESCOPED INTO SAID RECESSES IN SAID HOUSING, (H) SAID RECESSES IN SAID HOUSING BEING FORMED SO SAID TERMINALS OF SAID ELECTRIC FUSE UNITS ARE MOVED IN DIRECTIONS WHICH ARE GENERALLY PARALLEL TO THE AXES OF SAID TERMINALS AS SAID ELECTRIC FUSE UNITS ARE TELESCOPED INTO SAID RECESSES, (I) SAID RECESSES HAVING SURFACES THEREIN WHICH ENGAGE THE SIDES OF THE TERMINALS OF SAID ELECTRIC FUSE UNITS TO HOLD SAID ELECTRIC FUSE UNITS SOLIDLY AGAINST SIDEWAYS MOVEMENT RELATIVE TO SAID HOUSING AND WHICH PERMIT ENDWISE MOVEMENT OF SAID ELECTRIC FUSE UNITS AFTER SAID ELECTRIC FUSE UNITS ARE TELESCOPED WITHIN SAID RECESSES, (J) EACH OF SAID ELECTRIC FUSE UNITS BEING ADAPTED TO PROTECT A DIFFERENT ELECTRIC CIRCUIT, (K) THE TOP OF SAID HOUSING BEING OPEN BUT NORMALLY BEING CLOSED BY A CLOSURE, (L) SEALS THAT SURROUND AND ENGAGE SAID PRONGS OF SAID TERMINALS OF SAID ELECTRIC FUSE UNITS AND THAT ENGAGE THE INNER SURFACES OF SAID RECESSES AND THAT COACT WITH SAID PRONGS TO CLOSE AND SEAL SAID OPENINGS IN THE BOTTOMS OF SAID RECESSES, (M) ARC-QUENCHING FILLER MATERIAL DISPOSED WITHIN SAID RECESSES, (N) SAID ELECTRIC FUSE UNITS BEING OPEN IN NATURE SO SAID ARC-QUENCHING FILLER MATERIAL CAN FLOW FREELY INTO ENGAGEMENT WITH SAID FUSIBLE ELEMENTS OF SAID ELECTRIC FUSE UNITS AFTER SAID ELECTRIC FUSE UNITS HAVE BEEN TELESCOPED INTO SAID RECESSES, AND (O) A PLATE OF RESILIENT MATERIAL THAT UNDERLIES SAID CLOSURE AND OVERLIES THE UPPER ENDS OF SAID TERMINALS OF SAID ELECTRIC FUSE UNITS AND OVERLIES SAID ARCQUENCHING FILLER MATERIAL WHEN SAID ELECTRIC FUSE UNITS ARE TELESCOPED WITHIN SAID RECESSES, (P) SAID CLOSURE BEING HELD IN SUFFICIENTLY INTIMATE ENGAGEMENT WITH SAID HOUSING TO COMPRESS SAID PLATE OF RESILIENT MATERIAL, (Q) SAID PLATE OF RESILIENT MATERIAL APPLYING PRESSURE TO SAID ARC-QUENCHING FILLER MATERIAL AND FORCING SAID ARC-QUENCHING FILLER MATERIAL INTO INTIMATE ENGAGEMENT WITH SAID FUSIBLE ELEMENTS OF SAID ELECTRIC FUSE UNITS, (R) SAID SEALS APPLYING PRESSURE TO SAID TERMINALS TO URGE SAID TERMINALS TOWARD SAID TOP OF SAID HOUSING, (S) SAID PLATE OF RESILIENT MATERIAL APPLYING PRESSURE TO SAID TERMINALS TO URGE SAID TERMINALS TOWARD SAID BOTTOMS OF SAID RECESSES AND COACTING WITH SAID SEALS TO RESILIENTLY MOUNT SAID ELECTRIC FUSE UNITS WITHIN SAID RECESSES.
References Cited (Backward Citations)
US531355A
Cited
US601286A
Cited
US633576A
Cited
GB190220483A
Cited
GB167713A
Cited
US1646629A
Cited
FR811555A
Cited
US2209823A
Cited
FR1129716A
Cited
US2794096A
Cited
US2920164A
Cited
US2800557A
Cited
US2834852A
Cited
US2950370A
Cited
FR1164019A
Cited
US3015709A
Cited
US3139499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |