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US3350581A Expired / Lapsed US ⏱️ 0.0 years remaining

Condition-initiated circuit-controlling apparatus

Assignee: Sigma Instruments Inc
•
Filing: 1963-07-11
•
Granted: 1967-10-31
•
Expires: 1983-07-11
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Abstract

No abstract record available.

Inventors

  • 👤 Jr Laurence B Stein

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-22 23:12
CPC Classifications
G; G04; G04C; G04C23/00; G04C23/14; G04C23/34; G04C23/36

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 230 words
APPARATUS FOR CONTROLLING THE TRANSMISSION OF ELECTRICAL POWER BETWEEN A POWER SOURCE AND A POWER CONSUMING LOAD, COMPRISING: CONDITION SENSING MEANS OPERABLE IN RESPONSE TO A PREDETERMINED FIRST LEVEL OF PHYSICAL CONDITION AND INOPERABLE IN RESPONSE TO A PREDETERMINED SECOND LEVEL OF PHYSICAL CONDITION; A SWITCH OPERATING MEANS CONNECTED TO SAID SOURCE IN SERIES WITH SAID SENSING MEANS AND OPERABLE FROM THE POWER SOURCE BY SAID CONDITION SENSING MEANS WHEN SAID SENSING MEANS IS OPERABLE; RECTIFYING MEANS AND CAPACITOR MEANS CONNECTED IN SERIES WITH EACH OTHER IN A CHARGING CIRCUIT CONNECTED TO SAID SOURCE; A DISCHARGE CIRCUIT FOR SAID CAPACITOR MEANS CONTROLLED BY CONTACTS OPERATED BY SAID SWITCH OPERATING MEANS, SAID CAPACITOR MEANS BEING CHARGEABLE FROM THE POWER SOURCE WHEN SAID CONDITION SENSING MEANS AND SAID SWITCH OPERATING MEANS ARE INOPERABLE; SAID CAPACITOR MEANS, WHEN CHARGED, DISCHARGING THROUGH SAID DISCHARGE CIRCUIT WHEN SAID CONDITION SENSING MEANS AND SAID SWITCH OPERATING MEANS BECOME OPERABLE AS THE PHYSICAL CONDITION CHANGES FROM SAID SECOND LEVEL TO SAID FIRST LEVEL; A FURTHER SWITCH OPERATING MEANS CONNECTED IN SAID DISCHARGE CIRCUIT AND OPERABLE RESPONSIVE TO DISCHARGE OF SAID CAPACITOR MEANS; AND TIMING MEANS CONNECTED TO SAID SOURCE AND INCLUDING CONTACT MEANS COUPLED BETWEEN THE LOAD AND THE SOURCE, ENERGIZED RESPONSIVE TO CLOSURE OF FURTHER CONTACTS BY SAID FURTHER SWITCH OPERATING MEANS TO CONTROL THE CONNECTION BETWEEN THE LOAD AND SOURCE FOR A PREDETERMINED TIME DURATION.
Claim 2
Dependent Claim 230 words
APPARATUS FOR CONTROLLING THE TRANSMISSION OF ELECTRICAL POWER BETWEEN A POWER SOURCE AND A POWER CONSUMING LOAD, COMPRISING: CONDITION SENSING MEANS OPERABLE IN RESPONSE TO A PREDETERMINED FIRST LEVEL OF PHYSICAL CONDITION AND INOPERABLE IN RESPONSE TO A PREDETERMINED SECOND LEVEL OF PHYSICAL CONDITION; A SWITCH OPERATING MEANS CONNECTED TO SAID SOURCE IN SERIES WITH SAID SENSING MEANS AND OPERABLE FROM THE POWER SOURCE BY SAID CONDITION SENSING MEANS WHEN SAID SENSING MEANS IS OPERABLE; RECTIFYING MEANS AND CAPACITOR MEANS CONNECTED IN SERIES WITH EACH OTHER IN A CHARGING CIRCUIT CONNECTED TO SAID SOURCE; A DISCHARGE CIRCUIT FOR SAID CAPACITOR MEANS CONTROLLED BY CONTACTS OPERATED BY SAID SWITCH OPERATING MEANS, SAID CAPACITOR MEANS BEING CHARGEABLE FROM THE POWER SOURCE WHEN SAID CONDITION SENSING MEANS AND SAID SWITCH OPERATING MEANS ARE INOPERABLE; SAID CAPACITOR MEANS, WHEN CHARGED, DISCHARGING THROUGH SAID DISCHARGE CIRCUIT WHEN SAID CONDITION SENSING MEANS AND SAID SWITCH OPERATING MEANS BECOME OPERABLE AS THE PHYSICAL CONDITION CHANGES FROM SAID SECOND LEVEL TO SAID FIRST LEVEL; A FURTHER SWITCH OPERATING MEANS CONNECTED IN SAID DISCHARGE CIRCUIT AND OPERABLE RESPONSIVE TO DISCHARGE OF SAID CAPACITOR MEANS; AND TIMING MEANS CONNECTED TO SAID SOURCE AND INCLUDING CONTACT MEANS COUPLED BETWEEN THE LOAD AND THE SOURCE, ENERGIZED RESPONSIVE TO CLOSURE OF FURTHER CONTACTS BY SAID FURTHER SWITCH OPERATING MEANS TO CONTROL THE CONNECTION BETWEEN THE LOAD AND SOURCE FOR A PREDETERMINED TIME DURATION.

References Cited (Backward Citations)

US2617972A Cited
US2640958A Cited
US2788482A Cited
US2859960A Cited
US3024372A Cited
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US3240960A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-10-30 1971-05-01 1971-10-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-10-30 1975-05-01 1975-10-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-10-30 1979-05-01 1979-10-31 $7700.00 Window Closed / Lapsed

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