Starting device for a toy motor using an ultrasonic wave signal

• US 4,701,681 A
• Filed: 06/17/1986
• Issued: 10/20/1987
• Est. Priority Date: 06/28/1985
• Status: Expired due to Fees

• Current Assignee: Ozen Corporation
• Original Assignee: Ozen Corporation
• Inventors: Koike, Eishi
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): Ro, Bentsu
• Application Number:
  US06/875,199
• Time in Patent Office: 490 Days
• Field of Search: 318/16, 446/409, 446/410, 446/416, 446/456, 446/454, 310/322, 310/334, 455/151, 455/603, 455/617, 455/619
• US Class Current: 318/16
• CPC Class Codes: A63H 29/24 Details or accessories for drive mechanisms, e.g. means for winding-up or starting toy engines
• CPC Class Codes: A63H 30/04 using wireless transmission

Abstract

Disclosed is a starting device for a toy motor using an ultrasonic wave signal. The starting device comprises a transmitter external to the toy which generates an ultrasonic wave signal and a receiving and starting element disposed within the toy for receiving the transmitted ultrasonic wave signal and starting the toy motor. In a preferred embodiment, the motor drives a sound reproducing device. The ultrasonic wave signal from the transmitter is received, amplified, and detected, and when the detected output reaches a predetermined level, a switching transistor forming an energization path to the motor is turned on to start the motor. Once the motor is started, a self-holding switch associated with the switching transistor causes the switching transistor to supply continuous current to the motor even when the transmission of the ultrasonic wave signal has been terminated.

Claims

1. A starting device for a toy motor using an ultrasonic wave signal comprising:

a transmitter for generating an ultrasonic wave signal; and

a receiving and starting circuit for receiving the ultrasonic wave signal from said transmitter and for starting said toy motor, said receiving and starting circuit including;

a receiving transducer for receiving said ultrasonic wave signal;

an amplifier section connected to said receiving transducer for amplifying the received signal including R-C amplifier circuits;

a detection section connected to the output of said amplifier section for generating a detected output signal including diode rectifiers and charging-discharging capacitor; and

a motor starting section connected to said detection section for energizing said motor in response to an output signal from said detection section.

2. A starting device according to claim 1, wherein said motor starting section further comprises:

a switching element for supplying a driving current to said toy motor in response to a detected output signal from said detection section; and

a self-holding switch associated with said switching element for supplying a continuous supply of driving current to said toy motor for a predetermined period of time.