US3148357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current switching apparatus
Assignee: Unisys Corp
•
Filing: 1959-09-28
•
Granted: 1964-09-08
•
Expires: 1979-09-28
Abstract
No abstract record available.
Inventors
- 👤 James E Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:00
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A SWITCHING CIRCUIT COMPRISING: TWO CURRENT BRANCHES; MEANS INCLUDING AN INDUCTANCE FOR CONTINUOUSLY DELIVERING A PREDETERMINED CONSTANT AMPLITUDE CURRENT TO THE TWO CURRENT BRANCHES ONE OF SAID BRANCHES INCLUDING AN ACTUAL LOAD AND THE OTHER OF SAID BRANCHES INCLUDING A DUMMY LOAD; SAID DUMMY LOAD BRANCH HAVING A SUBSTANTIALLY SIMILAR IMPEDANCE CHARACTERISTIC AS SAID ACTUAL LOAD BRANCH; SWITCHING MEANS COUPLED TO SAID BRANCHES FOR ALLOWING THE SAID CONTINUOUSLY DELIVERED CONSTANT AMPLITUDE CURRENT TO FLOW AT ALL TIMES THROUGH ONLY ONE OF SAID BRANCHES SO THAT SAID CURRENT IS NEITHER INTERRUPTED NOR CHANGED IN AMPLITUDE BUT IS DIVERTED BY SAID SWITCHING MEANS FROM ONE BRANCH TO THE OTHER WITH A MINIMUM OF TRANSIENT EFFECTS TO CAUSE A CONSTANT AMPLITUDE CURRENT TO FLOW THROUGH SAID ACTUAL LOAD BRANCH EACH TIME SAID ACTUAL LOAD BRANCH RECEIVES CURRENT.
Claim 2
Dependent Claim
134 words
A SWITCHING CIRCUIT COMPRISING: TWO CURRENT BRANCHES; MEANS INCLUDING AN INDUCTANCE FOR CONTINUOUSLY DELIVERING A PREDETERMINED CONSTANT AMPLITUDE CURRENT TO THE TWO CURRENT BRANCHES ONE OF SAID BRANCHES INCLUDING AN ACTUAL LOAD AND THE OTHER OF SAID BRANCHES INCLUDING A DUMMY LOAD; SAID DUMMY LOAD BRANCH HAVING A SUBSTANTIALLY SIMILAR IMPEDANCE CHARACTERISTIC AS SAID ACTUAL LOAD BRANCH; SWITCHING MEANS COUPLED TO SAID BRANCHES FOR ALLOWING THE SAID CONTINUOUSLY DELIVERED CONSTANT AMPLITUDE CURRENT TO FLOW AT ALL TIMES THROUGH ONLY ONE OF SAID BRANCHES SO THAT SAID CURRENT IS NEITHER INTERRUPTED NOR CHANGED IN AMPLITUDE BUT IS DIVERTED BY SAID SWITCHING MEANS FROM ONE BRANCH TO THE OTHER WITH A MINIMUM OF TRANSIENT EFFECTS TO CAUSE A CONSTANT AMPLITUDE CURRENT TO FLOW THROUGH SAID ACTUAL LOAD BRANCH EACH TIME SAID ACTUAL LOAD BRANCH RECEIVES CURRENT.
References Cited (Backward Citations)
US2819456A
Cited
US2840801A
Cited
US2785236A
Cited
US2915649A
Cited
US2915650A
Cited
US2989649A
Cited
US2996621A
Cited
US2989686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |