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US4987349A Expired / Lapsed US ⏱️ 0.0 years remaining

Infrared remote control toy

Assignee: ALPS SHOJI Co Ltd 16-22 YANAGIBASHI 2-CHOME TAITO-KU TOKYO JAPAN A CORP OF JAPAN
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Filing: 1989-07-19
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Granted: 1991-01-22
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Expires: 2009-07-19
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Abstract

Abstract An infrared remote control toy which needs a small amount of motor starting current includes a logic IC and a motor drive circuit consisting of four transistors connected in the form of a bridge, in which the bases of the third and fourth transistors are connected to the first and second junctions of the bridge.

Inventors

  • 👤 Yoshio Nakamura

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 17:40
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/03; H02P7/04

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 252 words
An infrared remote control toy comprising: a toy body having an electric motor mounted in said toy body for moving the same, a light receiving element mounted on the toy body for receiving infrared light to provide an electrical on/off signal, and a power source, an integrated logic circuit mounted in the toy body for receiving the electrical on/off signal from the light receiving element, said integrated logic circuit having a first terminal for providing a forward driving signal, a second terminal for providing a rearward driving signal, and a transistor connected across the power source and having a collector connected to the first terminal and a base connected to the second terminal, said base receiving a signal corresponding to the electrical on/off signal from the light receiving element, and a motor driving circuit mounted in the toy body and including a pair of a series connection of first and third transistors and a series connection of second and fourth transistors connected across the power source, said electric motor being connected across a first junction between the first and third transistors and a second junction between the second and fourth transistors such that bases of the third and fourth transistors are connected to the second and first junctions, respectively, and bases of the first and second transistors being connected to the first and second terminals of the integrated logic circuit, respectively so that the motor driving circuit operates at low electricity supplied from the logic circuit in both forward and rearward drivings.
Claim 2
Dependent Claim 252 words
An infrared remote control toy comprising: a toy body having an electric motor mounted in said toy body for moving the same, a light receiving element mounted on the toy body for receiving infrared light to provide an electrical on/off signal, and a power source, an integrated logic circuit mounted in the toy body for receiving the electrical on/off signal from the light receiving element, said integrated logic circuit having a first terminal for providing a forward driving signal, a second terminal for providing a rearward driving signal, and a transistor connected across the power source and having a collector connected to the first terminal and a base connected to the second terminal, said base receiving a signal corresponding to the electrical on/off signal from the light receiving element, and a motor driving circuit mounted in the toy body and including a pair of a series connection of first and third transistors and a series connection of second and fourth transistors connected across the power source, said electric motor being connected across a first junction between the first and third transistors and a second junction between the second and fourth transistors such that bases of the third and fourth transistors are connected to the second and first junctions, respectively, and bases of the first and second transistors being connected to the first and second terminals of the integrated logic circuit, respectively so that the motor driving circuit operates at low electricity supplied from the logic circuit in both forward and rearward drivings.
Claim 3
Dependent Claim 24 words
The infrared remote control toy of claim 1, wherein said light receiving element is especially sensitive at wavelengths between 850 nm and 970 nm.

References Cited (Backward Citations)

US4086724A Cited
US4217528A Cited
JPS5694983A Cited
US4371814A Cited
US4584504A Cited
US4618804A Cited
US4754133A Cited
US4828525A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-01-21 1994-07-23 1995-01-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-01-21 1998-07-23 1999-01-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-01-21 2002-07-23 2003-01-22 $7700.00 Window Closed / Lapsed

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