US3162772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic sequence timer
Assignee: Individual
•
Filing: 1961-06-20
•
Granted: 1964-12-22
•
Expires: 1981-06-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:11
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H03K17/292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
AN ELECTRONIC SEQUENCE TIMER COMPRISING A SOURCE OF DIRECT CURRENT HAVING A POSITIVE AND NEGATIVE LINE, A SWITCH IN THE POSITIVE LINE, A WORK LOAD AND A SILICON CONTROLLED RECTIFIER CONNECTED IN SERIES BETWEEN SAID POSITIVE AND NEGATIVE LINES, AND A PULSE DISCHARGE CIRCUIT ACROSS THE ANODE-CATHODE OF SAID RECTIFIER FOR PRODUCING A POSITIVE PULSE AT THE GATE OF SAID RECTIFIER AFTER A PREDETERMINED INTERVAL OF TIME CAUSING IT TO FIRE AND ALLOW THE CURRENT TO FLOW THROUGH THE LOAD, AND A SECOND SEQUENCE TIMING DEVICE CONNECTED TO SAID POSITIVE LINE, THE NEGATIVE LINE OF SAID SECOND TIMING DEVICE BEING CONNECTED TO THE ANODE OF SAID RECTIFIER OF SAID FIRST TIMING DEVICE, WHEREBY SAID SECOND TIMING DEVICE WILL NOT TIME OUT UNTIL SAID FIRST DEVICE HAS TIMED OUT.
Claim 2
Dependent Claim
128 words
AN ELECTRONIC SEQUENCE TIMER COMPRISING A SOURCE OF DIRECT CURRENT HAVING A POSITIVE AND NEGATIVE LINE, A SWITCH IN THE POSITIVE LINE, A WORK LOAD AND A SILICON CONTROLLED RECTIFIER CONNECTED IN SERIES BETWEEN SAID POSITIVE AND NEGATIVE LINES, AND A PULSE DISCHARGE CIRCUIT ACROSS THE ANODE-CATHODE OF SAID RECTIFIER FOR PRODUCING A POSITIVE PULSE AT THE GATE OF SAID RECTIFIER AFTER A PREDETERMINED INTERVAL OF TIME CAUSING IT TO FIRE AND ALLOW THE CURRENT TO FLOW THROUGH THE LOAD, AND A SECOND SEQUENCE TIMING DEVICE CONNECTED TO SAID POSITIVE LINE, THE NEGATIVE LINE OF SAID SECOND TIMING DEVICE BEING CONNECTED TO THE ANODE OF SAID RECTIFIER OF SAID FIRST TIMING DEVICE, WHEREBY SAID SECOND TIMING DEVICE WILL NOT TIME OUT UNTIL SAID FIRST DEVICE HAS TIMED OUT.
References Cited (Backward Citations)
US3040270A
Cited
US3113241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-22 | 1968-06-22 | 1968-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-22 | 1972-06-22 | 1972-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-22 | 1976-06-22 | 1976-12-22 | $7700.00 | Window Closed / Lapsed |