US3373345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current line regulator
Assignee: Forbro Design Corp
•
Filing: 1966-02-03
•
Granted: 1968-03-12
•
Expires: 1986-02-03
Abstract
No abstract record available.
Inventors
- 👤 Hung Han-Min
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:32
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/24; G05F1/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN AN ALTERNATING CURRENT LINE VOLTAGE REGULATING SYSTEN THE COMBINATION OF, INPUT TERMINALS FOR RECEIVING ALTERNATING CURRENT TO BE REGULATED, OUTPUT TERMINALS TO TRANSMIT REGULATED ALTERNATING CURRENT, A BUCK-BOOST TRANSFORMER CONNECTED IN SERIES BETWEEN ONE OF SAID INPUT TERMINALS AND ONE OF SAID OUTPUT TERMINALS FOR INCREASING OR DECREASING THE ALTERNATING CURRENT VOLTAGE BETWEEN SAID INPUT AND OUTPUT TERMINALS, PROGRAMMABLE VARIABLE TRANSFORMER MEANS CONNECTED TO SAID INPUT TERMINALS AND SAID BUCK-BOOST TRANSFORMER FOR PROVIDING INPUT VOLTAGE TO SAID BUCK-BOOST TRANSFORMER, A SHADED POLE REVERSIBLE INDUCTION MOTOR INCLUDING A FIELD WINDING, CLOCKWISE DRIVE SHADING COILS AND COUNTERCLOCKWISE DRIVE SHADING COILS, MECHANICAL COUPLING MEANS BETWEEN SAID MOTOR AND SAID VARIABLE TRANSFORMER TO PROGRAM SAID VARIABLE TRANSFORMER IN ACCORDANCE WITH THE ROTATION OF SAID MOTOR, MEANS FOR EXCITING SAID FIELD, MEANS FOR SENSING THE VOLTAGE ACROSS SAID OUTPUT TERMINALS, MEANS FOR RECTIFYING SAID SENSED
Claim 2
Dependent Claim
141 words
IN AN ALTERNATING CURRENT LINE VOLTAGE REGULATING SYSTEN THE COMBINATION OF, INPUT TERMINALS FOR RECEIVING ALTERNATING CURRENT TO BE REGULATED, OUTPUT TERMINALS TO TRANSMIT REGULATED ALTERNATING CURRENT, A BUCK-BOOST TRANSFORMER CONNECTED IN SERIES BETWEEN ONE OF SAID INPUT TERMINALS AND ONE OF SAID OUTPUT TERMINALS FOR INCREASING OR DECREASING THE ALTERNATING CURRENT VOLTAGE BETWEEN SAID INPUT AND OUTPUT TERMINALS, PROGRAMMABLE VARIABLE TRANSFORMER MEANS CONNECTED TO SAID INPUT TERMINALS AND SAID BUCK-BOOST TRANSFORMER FOR PROVIDING INPUT VOLTAGE TO SAID BUCK-BOOST TRANSFORMER, A SHADED POLE REVERSIBLE INDUCTION MOTOR INCLUDING A FIELD WINDING, CLOCKWISE DRIVE SHADING COILS AND COUNTERCLOCKWISE DRIVE SHADING COILS, MECHANICAL COUPLING MEANS BETWEEN SAID MOTOR AND SAID VARIABLE TRANSFORMER TO PROGRAM SAID VARIABLE TRANSFORMER IN ACCORDANCE WITH THE ROTATION OF SAID MOTOR, MEANS FOR EXCITING SAID FIELD, MEANS FOR SENSING THE VOLTAGE ACROSS SAID OUTPUT TERMINALS, MEANS FOR RECTIFYING SAID SENSED
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |