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특허 상세정보

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내보내기 페이스북 공유 카카오톡 공유

Seat belt retractor employing ultrasonic motor

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B60R-022/10    B60R-022/40    B60R-022/34   
미국특허분류(USC) 242/390.9 ; 180/268 ; 280/806 ; 280/807 ; 297/478 ; 242/382.6
출원번호 US-0628256 (1996-04-05)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Foley & Lardner
인용정보 피인용 횟수 : 81  인용 특허 : 0
초록
▼

A reel of a seat belt retractor equipped in a automobile for reeling a seat belt is integral with a shaft of an ultrasonic motor. The ultrasonic motor is rotated either one direction or the other so as to retract or draw out the seat belt. A control device for controlling the rotation of the ultrasonic motor by supplying a control signal based on the signals sensed by a buckle sensor which senses a buckle is locked, a tension sensor which senses tension of a seat belt, a speed sensor which senses speed of the automobile, a rotation sensor which senses th...

대표
청구항
▼

[ What is claimed is:] [1.] A seat belt retractor comprising:a) a reel having a shaft for reeling and unreeling a seat belt;b) an ultrasonic motor for rotating the shaft, the ultrasonic motor comprising:1) a plurality of piezo-electric devices, said piezo-electric devices receiving a control signal for actuating said ultrasonic motor,2) a stator secured to said piezo-electric devices and3) a rotor placed adjacent said stator;c) said rotor integral with or rigidly attached to said shaft for rotating said shaft upon actuation of said motor, said shaft rota...

이 특허를 인용한 특허 피인용횟수: 81

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