Patent US3152259A successfully refreshed from Google Patents.
US3152259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective circuit for electrical systems on automotive vehicles
Assignee: Mack Trucks Inc
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Filing: 1960-12-29
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Granted: 1964-10-06
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Expires: 1980-12-29
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Heine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:54
CPC Classifications
B; B60; B60R; B60R16/00; B60R16/02; B60R16/023; B60R16/0231; B60R16/0235
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A VEHICLE ELECTRICAL SYSTEM INCLUDING A BATTERY HAVING POSITIVE AND NEGATIVE TERMINALS, ONE OF WHICH IS GROUNDED, A STARTING MOTOR, A FIRST STARTER RELAY INCLUDING A NORMALLY OPEN SWITCH INTERPOSED BETWEEN SAID MOTOR AND THE OTHER TERMINAL, AND AUXILIARY CIRCUITS CONNECTED TO SAID OTHER TERMINAL AND TO GROUND, THE COMBINATION OF A BATTERY PROTECTIVE CIRCUIT COMPRISING A SECOND STARTER RELAY INCLUDING A NORMALLY OPEN SWITCH OPERABLE WITH SAID FIRST RELAY SWITCH AND INTERPOSED BETWEEN SAID ONE BATTERY TERMINAL AND GROUND, SAID SECOND STARTER RELAY SWITCH BEING CLOSED WHEN SAID FIRST RELAY SWITCH IS CLOSED TO ACTUATE SAID MOTOR AND A NORMALLY CLOSED, OVERLOAD SWITCH INTERPOSED BETWEEN GROUND AND SAID ONE BATTERY TERMINAL, SAID OVERLOAD SWITCH CONNECTING SAID TERMINAL TO GROUND AT LEAST DURING THE TIME WHEN THE STARTING MOTOR IS NOT ACTUATED AND SAID OVERLOAD SWITCH BEING OPENED IN RESPONSE TO OVERLOADS AND SHORT CIRCUITS TO DISCONNECT SAID ONE TERMINAL FROM GROUND.
Claim 2
Dependent Claim
153 words
IN A VEHICLE ELECTRICAL SYSTEM INCLUDING A BATTERY HAVING POSITIVE AND NEGATIVE TERMINALS, ONE OF WHICH IS GROUNDED, A STARTING MOTOR, A FIRST STARTER RELAY INCLUDING A NORMALLY OPEN SWITCH INTERPOSED BETWEEN SAID MOTOR AND THE OTHER TERMINAL, AND AUXILIARY CIRCUITS CONNECTED TO SAID OTHER TERMINAL AND TO GROUND, THE COMBINATION OF A BATTERY PROTECTIVE CIRCUIT COMPRISING A SECOND STARTER RELAY INCLUDING A NORMALLY OPEN SWITCH OPERABLE WITH SAID FIRST RELAY SWITCH AND INTERPOSED BETWEEN SAID ONE BATTERY TERMINAL AND GROUND, SAID SECOND STARTER RELAY SWITCH BEING CLOSED WHEN SAID FIRST RELAY SWITCH IS CLOSED TO ACTUATE SAID MOTOR AND A NORMALLY CLOSED, OVERLOAD SWITCH INTERPOSED BETWEEN GROUND AND SAID ONE BATTERY TERMINAL, SAID OVERLOAD SWITCH CONNECTING SAID TERMINAL TO GROUND AT LEAST DURING THE TIME WHEN THE STARTING MOTOR IS NOT ACTUATED AND SAID OVERLOAD SWITCH BEING OPENED IN RESPONSE TO OVERLOADS AND SHORT CIRCUITS TO DISCONNECT SAID ONE TERMINAL FROM GROUND.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |