Matsushita Electric Works, Ltd.

Hiromitsu Inoue

Hiroshi Ohashi

Susumu Katayama

Mikio Kondo

Yuji Takada

Hideaki Abe

Toshio Abiko

Izumi Mihara

Yasushi Arikawa

Hideo Iwata

Shosuke Akisada

Yoshikazu Minakuchi

Masahiko Adachi

Yasuhiro Sato

Takeshi Imai

Kazumasa Yamauchi

Yoshiki Isogai

An ultrasonic hair curling device capable of applying ultrasonic vibration efficiently to hairs for effective hair styling in a short time. The device includes a housing, an ultrasonic generator incorporated in the housing for generating ultrasonic vibrations, and a horn connected to receive and transmit the ultrasonic vibrations. The horn is formed at its end with a hollow barrel which projects from the housing for receiving therearound a strand of hair to be curled. The hollow barrel is provided at a portion intermediates at its longitudinal ends with a hair winding zone of which cross-section is smaller than the other portion of the hollow barrel. The hair winding zone of the reduced cross section can vibrate at an amplitude larger than at the front end of the barrel for applying the ultrasonic vibrations efficiently to the hair and making the hair curling effectively.

Ultrasonic hair curling device

A moving object detecting device is arranged for detection in time series of an angle of respective received-wave signals at every moment with respect to basic axes in a vector plane, the basic axes being a pair of intermediate signals obtained by converting frequency deviation components of the received-wave signals responsive to incident on a wave receiver of reflected waves of radiated energy by a wave radiator from an object moving in a supervisory zone. Such moving object can be thereby detected at a high precision, irrespective of how quickly or slowly it moves within the zone.

Moving object detecting device

A superregenerative receiver includes a quenching oscillator for converting a received signal into a low frequency signal. The quenching oscillator comprises a transistor, a positive feedback circuit and an RC time constant circuit. A circuit is provided for modifying oscillation conditions including the base voltage of the transistor, a power supply voltage and the RC time constant of the RC circuit. In response to the output of the quenching oscillator whose oscillation condition or conditions have been modified, the quenching oscillator is placed into its optimum operating state in order that the receiver assumes substantially the maximum sensitivity.

Superregenerative receiver

An intrusion warning system for indicating the presence of an intruder to a given area comprises a single antenna line encircling the area insulated from the ground, a high frequency oscillator (e.g. of 1 kHz to 10 kHz) for feeding a high frequency signal to the antenna, a coupling impedance, for example, a capacitor, connected between the output terminal of the oscillator and the antenna, and a signal processing part which produces an alarm when detecting a voltage change over a predetermined level of the antenna induced by a proximation of the intruder.

Capacitively coupled electromagnetic intrusion warning system

Means for mounting a member functioning with a directivity to a mounting station of an associated device or the like. A housing for the member with its functional end surface exposed to the exterior is tapered at the periphery toward the other end to be, for example, hemispherical and rotatably born at diametrally opposed positions adjacent the functional end surface by both ends of a semiarcuate bearing means, the mounting station has a hole including peripherally opposing grooves of a size and shape capable of slidably engaging with the tapered periphery of the housing and receiving semiarcuate body of the bearing means, the housing is inserted in the hole on said the other end side, and the semiarcuate body of the bearing means in the inserted position of the member engages slidably with a resilient means acting to resiliently urge the tapered periphery of the housing against peripheral edge of the hole. In this mounted state, the functional surface of the member is allowed to be manually freely inclined in all 360.degree. directions with respect to the plane of the mounting station to set the directivity and normally stably retained in set inclined position.

Variable directivity mounting means

A moving object detecting device employing a pair of Doppler signals as a pair of vector signals of respective received-wave signals representing momentary reflected waves from a moving object. These vector signals are processed to obtain signals denoting in which ones of predetermined zones for the vector rotation depending on the movements of the object the vector is momentarily present, and shifting states of such zone signals through the zones are traced to sequentially determine the direction and period of the vector rotation and to actuate an alarm or the like when the rotation is in a fixed direction.

An echo-type switch using ultrasonic wave for detecting any object present in a predetermined area with reliable operation irrespective of environmental variations or foreign waves. After the wave is once radiated, the detection is suspended for a fixed time period T.sub.1 and presence or absence of reflected wave received is confirmed during another period T.sub.2. If reflected wave is received in the period T.sub.2, this period is again set for further confirming if the received wave continues and, until absence of the received wave is confirmed after several times of the waves received during the period T.sub.2, next ultrasonic wave is not radiated. Only in case the reflected wave received continues for more than two of the periods, the presence of the object to be detected in the area is indicated.

Ultrasonic wave echo-type switch

This invention provides an ultrasonic wave watching device for detecting a moving object wherein an ultrasonic wave signal generated by an oscillator is transmitted from a transmitter, reflected signals from a stationary object and moving object are received by a receiver and the variation with time of the phase difference between these received signals and the transmitted signal is detected to determine the presence and moving direction of the moving object.

Ultrasonic wave watching device of moving object detecting type

An ultrasonic wave horn adaptable to any desired radiation pattern varying in length-to-breadth ratio of intended detecting area. The horn comprises at least a horn body having gradually expanding caliber from a constricted throat to an expanded opening which is of a flat shape with an unequal length-to-breadth ratio, and an ultrasonic wave generating source of which wave emitting side is disposed adjacent the constricted throat of the horn body, wherein the constricted throat of the horn body is also of a flat shape having an unequal length-to-breadth ratio and the respective major axes of the flat-shaped constricted throat and expanded opening of the horn body are in a relation of intersecting each other at right angles.

Growing community of inventors

Kyoto, Japan

Hiromitsu Inoue