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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
|
출원번호 | US-0055900 (1987-05-28) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 48 인용 특허 : 0 |
An automatic temperature responsive ventilator including a housing having side walls defining an air passageway and an openwork grid across the passageway. At least one shutter is mounted within the housing, with one end of one shutter element being associated with a bimetallic spring, the inner end
An automatic ventilator to be received in an installation opening, the ventilator comprising: (a) a housing, said housing having peripheral side walls defining an air passageway therethrough; (b) at least one shutter element received in said air passageway and mounted to said housing for rotary move
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