US3363109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Model railroad electric power supplies and distribution equipment
Assignee: Individual
•
Filing: 1963-01-23
•
Granted: 1968-01-09
•
Expires: 1983-01-23
Abstract
No abstract record available.
Inventors
- 👤 John R Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:00
CPC Classifications
A; A63; A63H; A63H19/00; A63H19/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A TOY TRAIN POWER SUPPLY FOR A TWO RAIL TRACK SYSTEM UTILIZING A STEP DOWN TRANSFORMER WHOSE SECONDARY VOLTAGE IS NOMINALLY TWICE THE OPERATING VOLTAGE OF THE ELECTRIC TOY, FOUR RECTIFIERS DISPOSED AND CONNECTED AS A CONVENTIONAL FULL WAVE RECTIFIER ACROSS THE OUTPUT OF THE SECONDARY COIL OF THE TRANSFORMER, A HIGH RESISTANCE IN ELECTRICAL PARALLEL WITH A CONDENSER CONNECTED ACROSS THE OUTPUT OF SAID RECTIFIER CIRCUITRY, SAID HIGH RESISTANCE HAV-
Claim 2
Dependent Claim
71 words
A TOY TRAIN POWER SUPPLY FOR A TWO RAIL TRACK SYSTEM UTILIZING A STEP DOWN TRANSFORMER WHOSE SECONDARY VOLTAGE IS NOMINALLY TWICE THE OPERATING VOLTAGE OF THE ELECTRIC TOY, FOUR RECTIFIERS DISPOSED AND CONNECTED AS A CONVENTIONAL FULL WAVE RECTIFIER ACROSS THE OUTPUT OF THE SECONDARY COIL OF THE TRANSFORMER, A HIGH RESISTANCE IN ELECTRICAL PARALLEL WITH A CONDENSER CONNECTED ACROSS THE OUTPUT OF SAID RECTIFIER CIRCUITRY, SAID HIGH RESISTANCE HAV-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |