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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0857667 (1977-12-05) |
우선권정보 | FI-0003571 (1976-12-13) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 9 인용 특허 : 1 |
A door closer is connected to a door. The movements of the door cause a piston member in the door closer to pump a pressure medium through a flow duct. There is also a flow limiting member influencing at least the speed of the opening movement of the door, and this flow limiting member cooperates wi
A door closer comprising a movable piston member including a main flow duct with a movable valve body; said piston member having a power transmitting connection to a door; a pressure medium and chambers; the movements of said door causing said piston member to pump said pressure medium within said d
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