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    • 1. 发明授权
    • Hydraulic cylinders
    • 液压缸
    • US06460336B1
    • 2002-10-08
    • US09557887
    • 2000-04-21
    • Patrick DesboisYannick Thenault
    • Patrick DesboisYannick Thenault
    • F15B700
    • B60T11/16B29C45/261B29C45/2628
    • A housing (2) for a master cylinder (1) having a bore (3) in which a piston (4) is slideable to pressurize fluid ahead of a main seal (5) on the piston for the supply of pressurized fluid to an outlet (10). Two inlet openings (7,8) are provided into the bore, a first opening (7) for recuperation of fluid from an associated reservoir to that part (6) of the bore ahead of the main piston seal (5) when the piston is in a retracted position and a second opening (8) placing that portion (11) of the bore between the main piston seal and a second piston seal (9) behind the main seal in permanent communication with the reservoir. The housing also has an external inlet connection (41) formed integrally with the housing. The inlet connection has a free end for direct connection with a conduit (41a) connected with the associated reservoir and having a passage (42) for connection with the conduit which opens into the housing bore at the first (7) and second (8) openings. The configuration of the passage and the first and second openings is such that the passage (42) and the first and second openings (7,8) can be formed by a single moulding core (60).
    • 一种用于主缸(1)的壳体(2),其具有孔(3),其中活塞(4)可滑动,以在活塞上方的主密封件(5)之前的流体加压,以将加压流体供应到出口 (10)。 两个入口开口(7,8)设置在孔中,第一开口(7)用于将活塞从相关贮存器回收到主活塞密封件(5)前方的孔的部分(6) 在缩回位置和第二开口(8)中,将所述孔的所述部分(11)放置在所述主活塞密封件和所述主密封件后面的与所述储存器永久连通的第二活塞密封件(9)之后。 壳体还具有与壳体一体形成的外部入口连接(41)。 入口连接件具有自由端,用于与与相关联的储存器连接的导管(41a)直接连接,并且具有用于与在第一(7)和第二(8)处打开进入壳体孔的导管连接的通道) 开口 通道和第一和第二开口的构造使得通道(42)和第一和第二开口(7,8)可以由单个模制芯(60)形成。
    • 2. 发明授权
    • Hydraulic cylinders
    • 液压缸
    • US06418717B1
    • 2002-07-16
    • US09762361
    • 2001-02-05
    • Yannick Frank Theophile Emile ChristiaensLoic Jean Bernard BouyerPatrick Desbois
    • Yannick Frank Theophile Emile ChristiaensLoic Jean Bernard BouyerPatrick Desbois
    • F15B708
    • B60T11/16F16D25/088
    • A hydraulic cylinder has a piston (13) with a seal (21) in sealed sliding contact within a bore (12) to define a working chamber (16) ahead of the piston for the discharge of pressurised fluid from the bore via an outlet (17) when the piston is undertaking working stroke, an inlet (20) is provided into the bore from an associated reservoir to allow connection between the reservoir and the working chamber when the piston is in a fully retracted state for recuperation of fluid from the reservoir to the working chamber. The connection between the reservoir and working chamber is provided via a sleeve (27) in the bore (12) winch includes axially extending grooves (28), the grooves being closed by the piston seal (21) during a working stroke of the cylinder but the ends (30) of the grooves being open when the piston (13) is in a fully retracted condition within the sleeve thus by-passing the piston sleeve to connect the working chamber and reservoir. The sleeve (27) may also have a secondary function of providing an abutment (31) for a return spring (32) which returns the piston to its fully retracted position when an operating pedal (14) associated with the piston (13) is released.
    • 液压缸具有活塞(13),其具有在孔(12)内密封滑动接触的密封件(21),以限定活塞前方的工作室(16),用于经由出口( 如图17所示,当活塞进行工作行程时,当活塞处于完全缩回状态以从储存器中回收流体时,将入口(20)从相关联的储存器提供到孔中,以允许储存器和工作室之间的连接 到工作室。 储存器和工作室之间的连接通过孔(12)中的套筒(27)提供,绞盘包括轴向延伸的凹槽(28),凹槽在气缸的工作冲程期间被活塞密封件(21)封闭,但是 当活塞(13)处于套筒内的完全缩回状态时,槽的端部(30)打开,从而绕过活塞套筒以连接工作室和储存器。 套筒(27)还可以具有辅助功能,该功能为复位弹簧(32)设置一个邻接件(31),当与活塞(13)相关的操作踏板(14)被释放时,弹簧将活塞返回到其完全缩回位置 。