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    • 89. 发明授权
    • Method of manufacturing gas springs
    • 制造气弹簧的方法
    • US06425279B1
    • 2002-07-30
    • US09744287
    • 2001-04-02
    • Mark S. Jeffries
    • Mark S. Jeffries
    • B21D1502
    • F16F9/3235B21C37/20B21C37/202B21H7/187F16F9/0218F16F9/3207F16F9/346
    • The method includes making a fluid communication channel (44), which has a selectively variable cross-sectional area profile, in the inner face of a gas spring cylinder (32) so as to permit fluid communication at different selective rates bypassing around or across the piston assembly (68) of the gas spring (52)as the piston assembly (68) moves within the cylinder (32). Preferably the cross-sectional area profile of the fluid communication channel (44) is initially substantially the same throughout the length of the channel(44) and is thereafter selectively changed in certain portions of the channel (44) so as to restrict and in some instances block gas or fluid flow through the fluid communication channel (44).
    • 该方法包括在气弹簧缸(32)的内表面中形成具有可选择的可变截面区域轮廓的流体连通通道(44),以便允许以不同的选择速率流体连通,绕过或跨越 当活塞组件(68)在气缸(32)内移动时,气弹簧(52)的活塞组件(68)。 优选地,流体连通通道(44)的横截面面积轮廓最初在通道(44)的整个长度上基本相同,并且此后在通道(44)的某些部分中选择性地改变,以限制和在一些 实例阻止气体或流体流过流体连通通道(44)。
    • 90. 发明授权
    • Method and device for producing press-rolled pipes with inner wall
thickenings at the ends
    • 用于生产压延管的方法和装置,其端部具有内壁增厚
    • US06038901A
    • 2000-03-21
    • US29222
    • 1998-09-01
    • Bernd SteinHeinz LehnertWilhelm ZimmermannHeinz Steinhauer
    • Bernd SteinHeinz LehnertWilhelm ZimmermannHeinz Steinhauer
    • B21C37/20B21D22/16B21H7/18
    • B21C37/20B21D22/16B21H7/187
    • A method for producing press-rolled tubes (3) with a press mandrel (1) and one or more pressure rollers (2), with the tube (3) being arranged between the press mandrel (1) and the pressure rollers (2) and being plastically deformed by means of force loading of the pressure rollers (2). To produce tubes with end wall thickenings, in a first working operation, a first press mandrel (1a) with a tailstock-end shoulder (4) is used. The pressure rollers (2) begin their transforming work at the tailstock-end shoulder (4) and work in the direction of the machine spindle. The half-finished tube (3a) is taken from the first press mandrel (1a), and, in a second working operation, the half-finished tube (3a) is clamped at the end with the wall thickening (5) which has already produced into a lathe chuck (6) (tensioning spindle or similar) mounted in the press-rolling machine, and a second press mandrel (1b), fastened on the tailstock end and having an outer diameter (d.sub.2) which corresponds to the inner diameter of the wall thickening, is pushed into the half-finished tube (3a). Then the pressure rollers (2) form the second wall thickening from the tailstock-end in the direction of the machine-spindle end.
    • PCT No.PCT / EP96 / 03870 Sec。 371日期:1998年9月1日 102(e)1998年9月1日PCT PCT 1996年9月4日PCT公布。 出版物WO97 / 09135 日期1997年3月13日利用压力心轴(1)和一个或多个压力辊(2)制造压制管(3)的方法,其中管(3)布置在压力心轴(1)和 压力辊(2)并且通过压力辊(2)的力加载而塑性变形。 为了制造具有端壁增厚的管,在第一工作操作中,使用具有尾架端肩部(4)的第一压力心轴(1a)。 压力辊(2)在尾座肩部(4)处开始变形,并沿机床主轴方向工作。 半成品管(3a)从第一压力心轴(1a)中取出,并且在第二工作操作中,半成品管(3a)在端部夹紧,其中已经具有壁增厚(5) 被制造成安装在压制机中的车床卡盘(6)(张紧轴或类似物)和紧固在尾架端部并具有对应于内径的外径(d2)的第二压力心轴(1b) 的壁增厚,被推入半成品管(3a)中。 然后,加压辊(2)在机床主轴端的方向上形成从尾架端部增厚的第二壁。