Patent US3140825A successfully refreshed from Google Patents.
US3140825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracks for electrically driven model vehicles
Assignee: Minic Ltd
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Filing: 1961-10-24
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Granted: 1964-07-14
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Expires: 1981-10-24
Abstract
No abstract record available.
Inventors
- 👤 Edmondson Anthony Jam Kinghorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:17
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A SECTION OF TRACK FOR AN ELECTRICALLY PROPELLED MODEL VEHICLE COMPRISING: A BASE OF ELECTRICALLY INSULATING MATERIAL HAVING A SLOT IN ONE FACE THEREOF; TWO CONDUCTING RAILS REMOVABLE MOUNTED WITHIN SAID SLOT IN CONTACT WITH THE SIDE WALLS THEREOF; AN INSULATING STRIP CO-EXTENSIVE IN LENGTH WITH SAID RAILS, DIMENSIONED TO BE A PUSH FIT BETWEEN SAID RAILS, AND POSITIONED AT THE BASE OF SAID SLOT TO URGE SAID RAILS AGAINST THE OPPOSITE SIDE WALLS OF SAID SLOT; TONGUES PROJECTING LATERALLY FROM SAID RAILS; AND MEANS DEFINING RECESSES IN THE SIDE WALLS OF SAID SLOT FOR RECEIVING SAID TONGUES WHEREBY SAID RAILS ARE
Claim 2
Dependent Claim
102 words
A SECTION OF TRACK FOR AN ELECTRICALLY PROPELLED MODEL VEHICLE COMPRISING: A BASE OF ELECTRICALLY INSULATING MATERIAL HAVING A SLOT IN ONE FACE THEREOF; TWO CONDUCTING RAILS REMOVABLE MOUNTED WITHIN SAID SLOT IN CONTACT WITH THE SIDE WALLS THEREOF; AN INSULATING STRIP CO-EXTENSIVE IN LENGTH WITH SAID RAILS, DIMENSIONED TO BE A PUSH FIT BETWEEN SAID RAILS, AND POSITIONED AT THE BASE OF SAID SLOT TO URGE SAID RAILS AGAINST THE OPPOSITE SIDE WALLS OF SAID SLOT; TONGUES PROJECTING LATERALLY FROM SAID RAILS; AND MEANS DEFINING RECESSES IN THE SIDE WALLS OF SAID SLOT FOR RECEIVING SAID TONGUES WHEREBY SAID RAILS ARE
References Cited (Backward Citations)
US1660715A
Cited
US2068403A
Cited
US2534458A
Cited
US2912745A
Cited
US3048124A
Cited
US3037265A
Cited
FR1246030A
Cited
US3027682A
Cited
US3000573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |