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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0199471 (1980-10-22) |
발명자 / 주소 |
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인용정보 | 피인용 횟수 : 5 인용 특허 : 1 |
A release structure is disclosed for automatically closing or opening a valve on the happening of an earthquake. The release structure includes a pendulum, which is biased upwardly against stop means formed for pivotal contact with an upper end of the pendulum, the stop means and the upper end havin
A vibrationally actuated release structure for use with a valve or the like having a closure member movable between a first position and a second position for controlling fluid flow therethrough, said release structure including a pendulum, mounting means formed for swinging support of said pendulum
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