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    • 1. 发明授权
    • Off-on control for an inflation aspirator
    • 充气吸气器的即时控制
    • US5002465A
    • 1991-03-26
    • US420582
    • 1989-10-12
    • Valerie H. LagenSteven P. NagodeRichard B. Dustman
    • Valerie H. LagenSteven P. NagodeRichard B. Dustman
    • F04F5/46
    • F04F5/466F04F5/468
    • In an aspirator (10) for pumping air into an inflatable (16), initial delivery of an aspirating fluid extends a piston (68) and the piston (68) extends an aspirator tube (24) to open an ambient air inlet (30) and render the aspirator (10) operable. Aspirating fluid pressure acts on a valve plug (112) and moves it into a first position in which the aspirating fluid pressure is connected to the linear fluid motor (66) for extending the piston (68). When inflation is substantially completed, back pressure from the inflatable (16) acts on a movable wall (74) which is connected to the valve plug (112) to produce a force which overrides the force of the aspirating fluid pressure acting on the valve plug (112). The overriding force moves the valve plug (112) into a second position in which flow of aspirating fluid into the linear motor (66) is blocked and the piston (68) is vented. A spring (48) then retracts the aspirator tube (24 ) closing the ambient air inlet (30), and disabling the aspirator (10).
    • 在用于将空气泵送到可充气(16)的吸气器(10)中,吸入流体的初始输送延伸活塞(68),活塞(68)延伸吸气管(24)以打开环境空气入口(30) 并使抽吸器(10)可操作。 吸气流体压力作用在阀塞(112)上并将其移动到第一位置,在第一位置,抽吸流体压力连接到用于延伸活塞(68)的线性流体马达(66)。 当膨胀基本上完成时,来自可充气装置(16)的背压作用在连接到阀塞(112)的可动壁(74)上,以产生超过作用在阀塞上的抽吸流体压力的力 (112)。 超压力将阀塞(112)移动到第二位置,在第二位置,吸入流入线性马达(66)的流动被阻塞并且活塞(68)被排出。 然后,弹簧(48)缩回关闭环境空气入口(30)的抽吸管(24),并使吸气器(10)无效。