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公开(公告)号：US4859152A
公开(公告)日：1989-08-22
申请号：US122464
申请日：1987-11-19
IPC分类号： F04B45/047 , H02K33/16
CPC分类号： F04B45/047
摘要： An air pump includes a housing body containing an electromagnetic drive mechanism for oscillating a pair of diaphragms. The diaphragms define variable volume chambers, the chambers communicating with suction and discharge ports for establishing an air flow in response to diaphragm oscillation. The drive mechanism comprises coils defining an air gap and a permanent magnet type actuator reciprocably mounted in the air gap. The top of the housing body is open to enable the actuator to be visually inspected for proper alignment within the air gap. A cover is installed over the open top of the housing body with the actuator properly installed in the air gap. The cover contains air passages communicating with the suction and discharge ports. The weight of the diaphragm can be altered to achieve a desired resonance frequency tuned to the frequency of the electrical current.
摘要翻译： 空气泵包括壳体，其容纳有用于使一对隔膜振动的电磁驱动机构。 隔膜限定可变容积室，室与吸入口和排出口连通，以响应膜片振动建立空气流。 驱动机构包括限定气隙的线圈和可往复地安装在气隙中的永磁式致动器。 外壳主体的顶部是开放的，以使得执行器能够被视觉检查以在气隙内正确对准。 在壳体的敞开的顶部安装一个盖子，其中执行机构正确安装在气隙中。 盖子包含与抽吸和排出口连通的空气通道。 可以改变隔膜的重量以实现调谐到电流频率的所需谐振频率。
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公开(公告)号：US4825486A
公开(公告)日：1989-05-02
申请号：US137584
申请日：1987-12-24
CPC分类号： A61G7/05776
摘要： A bedsore-preventing air mattress controller provided with an air pump for generating a magnetomotive force in a plurality of stages proportional to the feed air amount of the pump, and with an electric switch for changing over the magnetomotive force of the pump and integrally assembled with an air shut-off valve for discharging and halting air, whereby the controller arrangement is simplified to effectively reduce the required number of parts for lowering manufacturing costs.
摘要翻译： 一种防褥疮气垫控制器，其具有用于产生与泵的进料空气量成比例的多个级的磁动势的气泵，以及用于切换泵的磁动势的电开关，并与 用于排出和停止空气的空气截止阀，由此控制器装置被简化以有效地减少所需数量的部件以降低制造成本。
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公开(公告)号：US5865418A
公开(公告)日：1999-02-02
申请号：US964827
申请日：1997-11-05
CPC分类号： G05D23/026 , F16K31/002
摘要： A compact fluid control valve effects a reliable fluid flow regulation by the use of a shape memory alloy wire. The valve comprises a barrel provided with a base member and a valve body. The valve body is cooperative with the base member to define therebetween a valve opening in the course of an internal flow path through the valve for a fluid. The valve body is movable towards and away from the base member to vary the valve opening for regulating the flow of the fluid. A bias spring urges the valve body for varying the valve opening in one direction. The shape memory alloy wire connects the valve body to the barrel to move the valve body against the bias spring for varying the valve opening when heated. The barrel has anchor members for securing the ends of the wire. The anchor members are disposed on the exterior of the barrel and at such a portion that the wire stretches between the barrel and the valve body exteriorly of the barrel in an overlapping relation with a major portion of the barrel along the axial length thereof. Thus, the wire can be kept substantially away from the internal flow path of the fluid and consequently kept thermally unaffected thereby for a reliable flow regulation. Further, since the wire overlaps with the barrel, the entire valve can have a reduced axial dimension and be therefore made compact enough to be installed in a limited space.
摘要翻译： 紧凑的流体控制阀通过使用形状记忆合金线来实现可靠的流体流动调节。 阀包括设置有基部构件和阀体的筒体。 阀体与基座构件协作以在其间限定通过用于流体的阀的内部流路的过程中的阀开口。 阀体可以朝向和远离基部构件移动以改变用于调节流体流动的阀开口。 偏压弹簧促使阀体在一个方向上改变阀开口。 形状记忆合金线将阀体连接到筒体上，以将阀体抵靠偏压弹簧移动，以在加热时改变阀门开口。 枪管具有用于固定线的端部的锚定构件。 锚固构件设置在筒的外部上，并且在这样的部分处，该线在筒的外部在筒的外部沿着其轴向长度与筒的主要部分重叠的关系延伸在筒体和阀体之间。 因此，电线可以保持基本上远离流体的内部流动路径，并因此保持热不受影响，从而实现可靠的流量调节。 此外，由于线与筒重叠，所以整个阀可以具有减小的轴向尺寸，并且因此被制成足够紧凑以安装在有限的空间中。
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公开(公告)号：US5323806A
公开(公告)日：1994-06-28
申请号：US33740
申请日：1993-03-22
IPC分类号： A61B5/0235 , A61B5/02
CPC分类号： A61B5/0235 , Y10T137/7792 , Y10T137/7869 , Y10T137/7884
摘要： A constant-speed exhaust valve device has a valve body of a cylindrical shape opened at both axial ends, and a push means disposed to apply an axial compressive force to the valve body, whereby the exhaust speed of the device can be made steady and manufacturing yield of the device is made excellent.
摘要翻译： 恒速排气阀装置具有在两个轴向端部开口的圆筒形的阀体和设置成向阀体施加轴向压缩力的推动装置，由此能够使装置的排气速度稳定并制造 该装置的产量优良。
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公开(公告)号：US5332370A
公开(公告)日：1994-07-26
申请号：US49378
申请日：1993-04-21
CPC分类号： F04B43/043
摘要： A miniature diaphragm pump comprises a motor having an output shaft rotating about its axis, an eccentric pin fixed in eccentric relation to the axis of the output shaft, a drive member connected to the eccentric pin to be driven thereby to reciprocate in a direction perpendicular to the axis of the output shaft, at least one pump chamber disposed radially outwardly of the drive element with respect to the axis of the output shaft and having inlet and outlet valves. Each pump chamber has one diaphragm surface with a rigid joint rod and is connected with the drive member through the joint rod. The reciprocating motion of the drive member is transmitted to each pump chamber such that one pumping action including a compression step and an inflation step is provided to the respective pump chamber during one revolution of the eccentric pin about the output shaft. In addition, since the drive member is reciprocated in the direction perpendicular to the output shaft, it is not necessary to take a large space between the motor and each pump chamber for obtaining the reciprocating motion of the drive member, so that the diaphragm pump as a whole becomes to be small.
摘要翻译： 微型隔膜泵包括具有围绕其轴线旋转的输出轴的电动机，以与输出轴的轴线偏心固定的偏心销;连接到待驱动的偏心销的驱动构件，从而沿垂直于...的方向往复运动; 输出轴的轴线，至少一个泵室，其相对于输出轴的轴线径向向外设置在驱动元件上，并且具有入口和出口阀。 每个泵室具有一个具有刚性接头杆的隔膜表面，并通过接头杆与驱动构件连接。 驱动构件的往复运动被传递到每个泵室，使得在围绕输出轴的偏心销旋转一圈期间，将包括压缩步骤和充气步骤的一个泵送动作提供给相应的泵室。 此外，由于驱动部件在与输出轴垂直的方向上往复运动，所以不需要在电动机和各泵室之间留出较大的空间，以获得驱动部件的往复运动，使得隔膜泵为 整体变小了
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公开(公告)号：US4433357A
公开(公告)日：1984-02-21
申请号：US309397
申请日：1981-10-07
CPC分类号： H01H47/226
摘要： A drive circuit for a latching relay includes a flip-flop, a timer and a semiconductive switching circuit for the relay. First and second input signals are applied to the flip-flop and first and second control signals at the output of the flip-flop are applied alternately to the timer as a time limit output for controlling the energization of the switching circuit in concert with a high-speed changeover signal.
摘要翻译： 用于锁存继电器的驱动电路包括用于继电器的触发器，定时器和半导体开关电路。 第一和第二输入信号被施加到触发器，触发器的输出处的第一和第二控制信号被交替地施加到定时器作为用于控制开关电路的通电的时间限制输出 速度切换信号。
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