US3303607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line follower device, especially for toys
Assignee: Individual
•
Filing: 1965-10-12
•
Granted: 1967-02-14
•
Expires: 1985-10-12
Abstract
No abstract record available.
Inventors
- 👤 Albert M Zalkind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:08
CPC Classifications
A; A63; A63H; A63H18/00; A63H18/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A TOY VEHICLE COMPRISING A PAIR OF MOTORS HAVING ROTARY MOTOR SHAFTS EXTENDING DOWNWARDLY THEREFROM WITH SAID SHAFTS MOUNTED AT AN ACUTE ANGLE WITH RELATION TO THE VERTICAL AXIS OF SAID VEHICLE AND SAID SHAFTS SERVING AS MEANS TO SUPPORT AT LEAST A PORTION OF SAID VEHICLE ON A SURFACE AND EFFECT PROPULSION OF SAID VEHICLE BY DIRECT ROTARY ENGAGEMENT OF SAID SHAFTS WITH SAID SURFACE.
Claim 2
Dependent Claim
66 words
A TOY VEHICLE COMPRISING A PAIR OF MOTORS HAVING ROTARY MOTOR SHAFTS EXTENDING DOWNWARDLY THEREFROM WITH SAID SHAFTS MOUNTED AT AN ACUTE ANGLE WITH RELATION TO THE VERTICAL AXIS OF SAID VEHICLE AND SAID SHAFTS SERVING AS MEANS TO SUPPORT AT LEAST A PORTION OF SAID VEHICLE ON A SURFACE AND EFFECT PROPULSION OF SAID VEHICLE BY DIRECT ROTARY ENGAGEMENT OF SAID SHAFTS WITH SAID SURFACE.
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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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |