Patent US3264551A successfully refreshed from Google Patents.
US3264551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple stage d. c. signal control device
Assignee: Toshiba Corp
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Filing: 1963-08-14
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Granted: 1966-08-02
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Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 Segawa Yasuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:40
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/24; H03H7/25; H03H7/253
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
225 words
A MULTIPLE STAGE D.C. SIGNAL CONTROL DEVICE COMPRISING, A FIRST D.C. SOURCE INCLUDING TERMINALS, A FIRST VARIABLE RESISTOR WITH A SLIDABLE ARM CONNECTED IN PARALLEL WITH SAID FIRST D.C. SOURCE, A SECOND D.C. SOURCE INCLUDING TERMINALS AND A COMMON JUNCTION SO THAT SAID SECOND D.C. SOURCE IS CONNECTED IN SERIES WITH SAID FIRST D.C. SOURCE, A SECOND VARIABLE RESISTOR WITH A SLIDABLE AR CONNECTED IN PARALLEL WITH SAID SECOND D.C. SOURCE, A FIRST D.C. SOURCE BUS SUPPLIED WITH THE OUTPUT VOLTAGE OF ANY ONE OF THE TERMINALS OF SAID FIRST AND SECOND D.C. SOURCES OTHER THAN SAID COMMON JUNCTION, A SECOND D.C. SOURCE BUS SUPPLIED WITH THE OUTPUT VOLTAGE OF THE SLIDABLE ARM OF SAID FIRST VARIABLE RESISTOR, A THIRD D.C. SOURCE BUS SUPPLIED WITH THE OUTPUT VOLTAGE OF THE SLIDABLE ARM OF SAID SECOND VARIABLE RESISTOR, A PLURALITY OF D.C. SIGNAL BUSSES TO BE SELECTIVELY SUPPLIED WITH THE OUTPUT VOLTAGE OF THE D.C. SOURCE BUSSES, TWO SETS OF THREE GANG SWITCHES, EACH GANG INCLUDING THREE PAIRS OF SWITCHES, EACH GANG HAVING A SET OF THREE CONTACTS CLOSING THE SWITCHES, CONNECTED IN CASCADE FOR SUPPLYING SAID SOURCE BUSSES OUTPUT VOLTAGE TO SAID SIGNAL BUSSES, A PLURALITY OF LEVEL SETTING VARIABLE RESISTORS EACH HAVING A SLIDING ARM ONE END OF EACH OF SAID LEVEL SETTING VARIABLE RESISTORS BEING CONNECTED TO A SELECTED ONE OF SAID D.C.
Claim 2
Dependent Claim
225 words
A MULTIPLE STAGE D.C. SIGNAL CONTROL DEVICE COMPRISING, A FIRST D.C. SOURCE INCLUDING TERMINALS, A FIRST VARIABLE RESISTOR WITH A SLIDABLE ARM CONNECTED IN PARALLEL WITH SAID FIRST D.C. SOURCE, A SECOND D.C. SOURCE INCLUDING TERMINALS AND A COMMON JUNCTION SO THAT SAID SECOND D.C. SOURCE IS CONNECTED IN SERIES WITH SAID FIRST D.C. SOURCE, A SECOND VARIABLE RESISTOR WITH A SLIDABLE AR CONNECTED IN PARALLEL WITH SAID SECOND D.C. SOURCE, A FIRST D.C. SOURCE BUS SUPPLIED WITH THE OUTPUT VOLTAGE OF ANY ONE OF THE TERMINALS OF SAID FIRST AND SECOND D.C. SOURCES OTHER THAN SAID COMMON JUNCTION, A SECOND D.C. SOURCE BUS SUPPLIED WITH THE OUTPUT VOLTAGE OF THE SLIDABLE ARM OF SAID FIRST VARIABLE RESISTOR, A THIRD D.C. SOURCE BUS SUPPLIED WITH THE OUTPUT VOLTAGE OF THE SLIDABLE ARM OF SAID SECOND VARIABLE RESISTOR, A PLURALITY OF D.C. SIGNAL BUSSES TO BE SELECTIVELY SUPPLIED WITH THE OUTPUT VOLTAGE OF THE D.C. SOURCE BUSSES, TWO SETS OF THREE GANG SWITCHES, EACH GANG INCLUDING THREE PAIRS OF SWITCHES, EACH GANG HAVING A SET OF THREE CONTACTS CLOSING THE SWITCHES, CONNECTED IN CASCADE FOR SUPPLYING SAID SOURCE BUSSES OUTPUT VOLTAGE TO SAID SIGNAL BUSSES, A PLURALITY OF LEVEL SETTING VARIABLE RESISTORS EACH HAVING A SLIDING ARM ONE END OF EACH OF SAID LEVEL SETTING VARIABLE RESISTORS BEING CONNECTED TO A SELECTED ONE OF SAID D.C.
References Cited (Backward Citations)
US2529989A
Cited
US3040575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |