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|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F15B-015/00 F15B-015/26 F16K-031/122|
|미국특허분류(USC)||60/404 ; 60/405 ; 60/428 ; 49/26|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 8 인용 특허 : 5|
The control mechanism is for pneumatic apparatus of the kind comprising a piston-and-cylinder motor coupled between two relatively-movable parts (such as door-leaves) for driving them, when energized, to a predetermined relative position. A pilot valve is actuated when required to switch the apparatus to an emergency mode by isolating the motor from its power source and discharging it into an emergency reservoir having a volume large compared with the maximum volume of gas in the motor. While the pilot valve is actuated, the relatively-movable parts are ...
A control mechanism for pneumatic apparatus having a piston-and-cylinder motor coupled between two relatively-movable parts, said motor having an actuating chamber, and means for supplying high-pressure air to the actuating chamber to drive the said parts to a predetermined relative position, the control mechanism comprising a pilot valve coupled between said supply means and said actuating chamber and allowing flow of high-pressure air to said actuating chamber in a normal mode of operation, an emergency reservoir having a volume large compared with the...