US3386003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground protective circuit
Assignee: Burdick Corp
•
Filing: 1966-07-18
•
Granted: 1968-05-28
•
Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Leslie W Partridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:13
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A CIRCUIT FOR MINIMIZING THE POSSIBILITY OF SHOCK TO USERS OF APPARATUS COMPRISING AN ELECTRICAL LOAD DEVICE AND A CHASSIS AND ENERGIZED FROM AN ALTERNATING CURRENT SOURCE HAVING ONE TERMINAL GROUNDED, THE CHASSIS BEING UNGROUNDED, A SERIES CONNECTED FIRST RESISTOR AND CAPACITOR CONNECTED ACROSS THE LOAD DEVICE WITH THE CAPACITOR CONNECTED TO THE GROUNDED SIDE OF THE LOAD DEVICE, AND A SECOND RESISTOR OF HIGH RESISTANCE OR A HIGH IMPEDANCE CAPACITANCE CONNECTED FROM THE JUNCTION OF THE CAPACITOR AND FIRST RESISTOR TO THE CHASSIS, SAID FIRST RESISTOR AND
Claim 2
Dependent Claim
88 words
A CIRCUIT FOR MINIMIZING THE POSSIBILITY OF SHOCK TO USERS OF APPARATUS COMPRISING AN ELECTRICAL LOAD DEVICE AND A CHASSIS AND ENERGIZED FROM AN ALTERNATING CURRENT SOURCE HAVING ONE TERMINAL GROUNDED, THE CHASSIS BEING UNGROUNDED, A SERIES CONNECTED FIRST RESISTOR AND CAPACITOR CONNECTED ACROSS THE LOAD DEVICE WITH THE CAPACITOR CONNECTED TO THE GROUNDED SIDE OF THE LOAD DEVICE, AND A SECOND RESISTOR OF HIGH RESISTANCE OR A HIGH IMPEDANCE CAPACITANCE CONNECTED FROM THE JUNCTION OF THE CAPACITOR AND FIRST RESISTOR TO THE CHASSIS, SAID FIRST RESISTOR AND
References Cited (Backward Citations)
US3072827A
Cited
US3253188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |