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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0028790 (1987-03-23) |
우선권정보 | JP-0043115 (1986-03-26) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 39 인용 특허 : 0 |
An automatic door including a door body connected to a chain or belt extending between and wound around a drive pulley disposed on one side of a door opening and a driven pulley disposed on the other side thereof in which the door body is actuated to open and close by allowing the drive pulley to be
An automatic door which includes a door body connected to a chain or belt means extending between and wound around at least one drive pulley disposed on one side of a door opening and at least one driven pulley disposed on the other side thereof, wherein the door body is actuated to open or close by
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