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    • 5. 发明申请
    • PNEUMATIC DEVICE AND SYSTEM
    • 气动装置和系统
    • WO1996008657A1
    • 1996-03-21
    • PCT/GB1995002208
    • 1995-09-18
    • XCALIBRE EQUIPMENT LTD.SKINNER, Keith, Thomas
    • XCALIBRE EQUIPMENT LTD.
    • F15B15/08
    • F15B15/065E05F3/02E05F3/224E05F15/53E05Y2201/21E05Y2201/256E05Y2201/264E05Y2201/41E05Y2201/422E05Y2201/448E05Y2400/44E05Y2400/454E05Y2800/112E05Y2800/113E05Y2900/132F15B11/076F15B2211/212F15B2211/30525F15B2211/40584F15B2211/455F15B2211/46F15B2211/625F15B2211/7716F15B2211/8855
    • A pneumatic device (10) comprises a piston (12) moveable along a cylinder (10). The piston has opposite ends (18, 26) defining a space (30) therebetween. The space is divided into two chambers (30a, 30b) by a housing (40) fixed relative to the cylinder and having a fluid flow control passageway (42) therethrough. The space (30) is filled with fluid, such as oil. The piston (12) is arranged such that movement thereof against a spring (16) causes the fluid to be displaced from one chamber (30a) of the space (30) to the other chamber (30b) through the passageway (42). The spring (16) is arranged to apply a return force to the piston (12) and the rate of return of the piston (12) is controlled by the return flow of fluid through the passageway (42). A pneumatic system (100) includes a device (10) connected between first and second members (58, 58a) of a building, such as a door and door frame. The pneumatic system comprises a source of compressed gas (C) for operating the device (10) to enable the device (10) to move the first member (58) relative to the second member (58a), i.e. to open and close the door. A switching device (72) controls the supply of compressed gas to the device (10).
    • 气动装置(10)包括可沿气缸(10)移动的活塞(12)。 活塞具有在其间限定空间(30)的相对端(18,26)。 空间通过相对于气缸固定的壳体(40)分成两个腔室(30a,30b),并具有通过其的流体流动控制通道(42)。 空间(30)填充有诸如油的流体。 活塞(12)被布置成使得其相对于弹簧(16)的移动使得流体通过通道(42)从空间(30)的一个室(30a)移动到另一个室(30b)。 弹簧(16)布置成向活塞(12)施加返回力,并且活塞(12)的返回速度由流体通过通道(42)的回流控制。 气动系统(100)包括连接在诸如门和门框架之类的建筑物的第一和第二构件(58,58a)之间的装置(10)。 气动系统包括用于操作装置(10)的压缩气体源(C),以使装置(10)能够相对于第二构件(58a)移动第一构件(58),即打开和关闭门 。 开关装置(72)控制向装置(10)供应压缩气体。