Patent US4865575A successfully refreshed from Google Patents.
US4865575A
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Light responsive remote control vehicle
Assignee: Mattel Inc
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Filing: 1988-11-04
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Granted: 1989-09-12
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Expires: 2008-11-04
Abstract
Abstract A light responsive remote control vehicle is operated in response to a beam of colored control light eminating from a hand operated and handheld controller. The vehicle is operative on a track having confining side walls and includes a pair of light sensors which respond solely to the illumination of the vehicle by the colored light beam. Electronic circuitry controls the operation of the vehicle in response to the relative illuminations of internal photosensors. A diffuser and light filter configuration is interposed between the controlled light and the photosensors to provide color selectivity.
Inventors
- 👤 Doren Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:41
CPC Classifications
A; A63; A63H; A63H30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A remote control vehicle for use in response to a controlling beam of colored light comprising: a vehicle having a body portion, a plurality of wheels, and a motor for propelling said vehicle; a motor control operatively coupled to said motor for selectively energizing said motor; circuit means coupled to said motor control including an pair of serially coupled photosensors defining a common junction therebetween producing a control signal in response to illumination of said photosensors by said colored light; and light coupling means, interposed between said photosensors and said colored light and supported by said vehicle, having a common diffuser and individual filters having different colors coupling the light illuminating said coupling means to said photosensors as distinct colored light.
Claim 2
Dependent Claim
121 words
A remote control vehicle for use in response to a controlling beam of colored light comprising: a vehicle having a body portion, a plurality of wheels, and a motor for propelling said vehicle; a motor control operatively coupled to said motor for selectively energizing said motor; circuit means coupled to said motor control including an pair of serially coupled photosensors defining a common junction therebetween producing a control signal in response to illumination of said photosensors by said colored light; and light coupling means, interposed between said photosensors and said colored light and supported by said vehicle, having a common diffuser and individual filters having different colors coupling the light illuminating said coupling means to said photosensors as distinct colored light.
References Cited (Backward Citations)
US2922929A
Cited
US3621356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |