Patent US3257600A successfully refreshed from Google Patents.
US3257600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical power and control mechanism for electrical appliances
Assignee: Unisys Corp
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Filing: 1965-02-18
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Granted: 1966-06-21
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Expires: 1985-02-18
Abstract
No abstract record available.
Inventors
- 👤 Tolmie Robert James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:37
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/38; B26B19/3873; B26B19/28; B26B19/286; B26B19/388; H; H01; H01F; H01F27/00; H01F27/40; H02; H02J; H02J4/00; H02J4/20; H02J4/25; H02J7/00; H02J7/02; H02P; H02P7/00; H02P7/06; H02P7/08; H02P7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
285 words
ELECTRIC POWER AND CONTROL MECHANISM FOR AN ELECTRICAL APPLIANCE COMPRISING: (A) A DRIVING MOTOR HAVING TWO MOTOR TERMINALS; (B) A RECHARGEABLE BATTERY; (C) A POWER PACK HAVING TWO INPUT TERMINALS AND A POSITIVE AND A NEGATIVE OUTPUT TERMINAL, SAID POWER PACK BEING ADAPTED WHEN CONNECTED BY ITS INPUT TERMINALS TO AN ALTERNATING SOURCE OF POWER FOR PROVIDING AT SAID OUTPUT TERMINALS UNIDIRECTIONAL POWER AT A CERTAIN MAGNITUDE FOR ENERGIZING SAID MOTOR; (D) A RESISTOR IN CIRCUIT WITH THE OUTPUT OF SAID POWER PACK; AND (E) A SWITCH HAVING FOUR SPACED CONTACTS AND A ROTARY BRUSH ARM OPERABLE TO THREE DISCRETE POSITIONS; (F) A FIRST CONTACT OF SAID ROTARY STIWCH CONNECTED TO ONE TERMINAL OF THE MOTOR, A SECOND CONTACT CONNECTED TO THE RESISTOR, A THIRD CONTACT CONNECTED TO THE POSITIVE TERMINAL OF THE POWER PACK AND TO THE RESISTOR, AND THE FOURTH CONTACT CONNECTED TO THE POSITIVE TERMINAL OF SAID BATTERY; (G) SAID ROTARY BRUSH ARM BEING SELECTIVELY MOVABLE AND OPERABLE TO A FIRST CERTAIN CONDITION CONNECTING SAID FIRST AND SAID THIRD CONTACTS TO CONNECT SAID DRIVING MOTOR TO THE OUTPUT TERMINALS OF SAID POWER PACK FOR ENERGIZATION AT THE CERTAIN MAGNITUDE OF THE UNIDIRECTIONAL POWER FOR ROTATION IN A PREDETERMINED DIRECTION, SAID ROTARY BRUSH ARM FURTHER BEING SELECTIVELY MOVABLE AND OPERABLE TO A SECOND CERTAIN CONDITION CONNECTING SAID FIRST AND SAID FOURTH CONTACTS TO CONNECT SAID DRIVING MOTOR TO SAID BATTERY FOR ENERGIZATION THEREFROM FOR ROTATION IN SAID PREDETERMINED DIRECTION, AND SAID ROTARY BRUSH ARM STILL FURTHER BEING SELECTIVELY MOVABLE AND OPERABLE TO A THIRD CERTAIN CONDITION CONNECTING SAID SECOND AND SAID FOURTH CONTACTS TO CONNECT SAID BATTERY TO SAID OUTPUT TERMINALS THROUGH SAID RESISTOR FOR CHARGING OF SAID BATTERY AT A CERTAIN RATE.
Claim 2
Dependent Claim
285 words
ELECTRIC POWER AND CONTROL MECHANISM FOR AN ELECTRICAL APPLIANCE COMPRISING: (A) A DRIVING MOTOR HAVING TWO MOTOR TERMINALS; (B) A RECHARGEABLE BATTERY; (C) A POWER PACK HAVING TWO INPUT TERMINALS AND A POSITIVE AND A NEGATIVE OUTPUT TERMINAL, SAID POWER PACK BEING ADAPTED WHEN CONNECTED BY ITS INPUT TERMINALS TO AN ALTERNATING SOURCE OF POWER FOR PROVIDING AT SAID OUTPUT TERMINALS UNIDIRECTIONAL POWER AT A CERTAIN MAGNITUDE FOR ENERGIZING SAID MOTOR; (D) A RESISTOR IN CIRCUIT WITH THE OUTPUT OF SAID POWER PACK; AND (E) A SWITCH HAVING FOUR SPACED CONTACTS AND A ROTARY BRUSH ARM OPERABLE TO THREE DISCRETE POSITIONS; (F) A FIRST CONTACT OF SAID ROTARY STIWCH CONNECTED TO ONE TERMINAL OF THE MOTOR, A SECOND CONTACT CONNECTED TO THE RESISTOR, A THIRD CONTACT CONNECTED TO THE POSITIVE TERMINAL OF THE POWER PACK AND TO THE RESISTOR, AND THE FOURTH CONTACT CONNECTED TO THE POSITIVE TERMINAL OF SAID BATTERY; (G) SAID ROTARY BRUSH ARM BEING SELECTIVELY MOVABLE AND OPERABLE TO A FIRST CERTAIN CONDITION CONNECTING SAID FIRST AND SAID THIRD CONTACTS TO CONNECT SAID DRIVING MOTOR TO THE OUTPUT TERMINALS OF SAID POWER PACK FOR ENERGIZATION AT THE CERTAIN MAGNITUDE OF THE UNIDIRECTIONAL POWER FOR ROTATION IN A PREDETERMINED DIRECTION, SAID ROTARY BRUSH ARM FURTHER BEING SELECTIVELY MOVABLE AND OPERABLE TO A SECOND CERTAIN CONDITION CONNECTING SAID FIRST AND SAID FOURTH CONTACTS TO CONNECT SAID DRIVING MOTOR TO SAID BATTERY FOR ENERGIZATION THEREFROM FOR ROTATION IN SAID PREDETERMINED DIRECTION, AND SAID ROTARY BRUSH ARM STILL FURTHER BEING SELECTIVELY MOVABLE AND OPERABLE TO A THIRD CERTAIN CONDITION CONNECTING SAID SECOND AND SAID FOURTH CONTACTS TO CONNECT SAID BATTERY TO SAID OUTPUT TERMINALS THROUGH SAID RESISTOR FOR CHARGING OF SAID BATTERY AT A CERTAIN RATE.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |