Patent US3083503A successfully refreshed from Google Patents.
US3083503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line follower device, especially for toys
Assignee: Individual
•
Filing: 1958-03-13
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Granted: 1963-04-02
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Expires: 1978-03-13
Abstract
No abstract record available.
Inventors
- 👤 Albert M Zalkind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:25
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
IN A LINE FOLLOWING TOY, A METALLIC SURFACED MEANS HAVING AN INSULATING PATH OF PREDETERMINED CURVATURE CARRIED THEREON, A VEHICLE FOR FOLLOWING SAID PATH COMPRISING ELECTRICALLY CONTROLLABLE STEERING MEANS, CONDUCTIVE CONTACT ELEMENTS ELECTRICALLY CONNECTED TO SAID STEERING MEANS FOR EFFECTING CONTROL THEREOF, SAID CONTACT ELEMENTS COMPRISING AT LEAST ONE PAIR OF SUCH CONDUCTIVE ELEMENTS SPACED SO AS TO NORMALLY STRADDLE SAID PATH AND BE IN ELECTRICALLY CONDUCTIVE ENGAGEMENT WITH SAID METALLIC SURFACE MEANS, WHEREBY CURRENT MAY BE TRANSMITTED THROUGH SAID CONDUCTIVE ELEMENTS TO SAID STEERING MEANS,
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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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |