公开(公告)号：US06232435B1

公开(公告)日：2001-05-15

申请号：US09646174

申请日：2000-09-14

申请人： Thomas Heitz ,  Helmut Heel ,  Peter Braune ,  Martin Klatt

发明人： Thomas Heitz ,  Helmut Heel ,  Peter Braune ,  Martin Klatt

IPC分类号： C08F600

CPC分类号： C08L77/00 ,  C08G63/183 ,  C08G63/78 ,  C08L67/02 ,  C08L69/00 ,  C08L67/03

摘要： A process for preparing polyalkylene arylates by esterifying or transesterifying an aromatic dicarboxylic acid or its esters or ester-forming derivatives with a molar excess of an aliphatic dihydroxy compound and polycondensing the resultant esterification or transesterification product comprises polycondensing the prepolymer with a viscosity number (VN) of

摘要翻译： 通过用摩尔过量的脂族二羟基化合物酯化或酯交换芳族二羧酸或其酯或酯形成衍生物并缩聚得到的酯化或酯交换产物来制备聚亚烷基芳基化物的方法包括使预聚物与粘度数（VN）缩聚， 在含氧气体存在下为<30ml / g。

公开(公告)号：US5199748A

公开(公告)日：1993-04-06

申请号：US820547

申请日：1992-01-14

申请人： Liebhard Jung ,  Helmut Heel

发明人： Liebhard Jung ,  Helmut Heel

IPC分类号： F16L27/08 ,  F16L39/04

CPC分类号： F16L27/087 ,  B23Q11/103 ,  F16L39/04

摘要： A rotary coupling for two different fluids. The coupling includes a fixed housing and hollow shaft mounted rotatably but axially immovably in the housing. The shaft is provided with a central through-flow channel for a first fluid and at least one second through-flow channel parallel thereto for a second fluid. In the housing there are provided two separate supply channels for the two fluids and two sliding ring sealing devices between these channels and the hollow shaft, arranged coaxially with an axis of rotation of the hollow shaft, through which sealing devices the fluids can be fed separately to the through-flow channels. The first sliding ring sealing device is arranged centrally between an inner end of the hollow shaft and a housing part with the first supply channel, while the second sliding ring sealing device surrounds the hollow shaft concentrically and includes a sliding ring rotatable with the hollow shaft and has at least one radial through passage, as well as two sliding rings bearing constantly under spring pressure on its two axially facing end faces. The second sliding ring sealing device is axially movable relative to the housing and the hollow shaft. The rotatable sliding ring is fixed to an inner bush coaxially surrounding the hollow shaft, which inner bush is adapted to be coupled and uncoupled from the hollow shaft in response to an axial sliding movement of the inner bush.

摘要翻译： 用于两种不同流体的旋转联轴器。 联接器包括固定壳体和空心轴，其可旋转但轴向地固定在壳体中。 轴设置有用于第一流体的中心通流通道和与其平行于第二流体的至少一个第二通流通道。 在壳体中，为两个流体提供了两个单独的供应通道和两个这些通道之间的两个滑动环密封装置和与空心轴的旋转轴同轴布置的空心轴，密封装置可以分别供给流体 到通流通道。 第一滑动环密封装置设置在中空轴的内端和具有第一供应通道的壳体部分之间的中间，而第二滑环密封装置同心地围绕中空轴，并且包括可与中空轴一起旋转的滑动环， 具有至少一个径向通过通道，以及在其两个轴向面向的端面上恒定地在弹簧压力下承受的两个滑环。 第二滑环密封装置相对于壳体和中空轴线可轴向移动。 可旋转的滑动环固定到同轴地围绕中空轴的内衬套上，该衬套适于与内衬的轴向滑动运动相结合并与空心轴脱离。

公开(公告)号：US5186476A

公开(公告)日：1993-02-16

申请号：US674554

申请日：1991-03-22

申请人： Helmut Heel ,  Manfred Fauter ,  Peter Mohr ,  Franz Friedl ,  Hans Kettel

发明人： Helmut Heel ,  Manfred Fauter ,  Peter Mohr ,  Franz Friedl ,  Hans Kettel

IPC分类号： B23B31/117 ,  B23B31/20 ,  B23B31/26

CPC分类号： B23B31/261 ,  Y10T279/1008 ,  Y10T279/1058 ,  Y10T409/30952 ,  Y10T82/2589

摘要： A clamping device for gripping a tool in a carrier. The clamping device has a hollow centering extension or spigot and an abutment surface surrounding it are provided on the tool. A tool receptacle provided in the carrier has a receiving bore matched to the centering extension and an end face surrounding the bore and against which the abutment surface can be pressed by a clamping arrangement. The clamping arrangement comprises a clamping sleeve movable coaxially with respect to the central axis and a clamping ring or collet movable in the opposite direction to the clamping sleeve, both of which are provided with clamping cones facing towards one another. The collet is movable axially on the clamping sleeve by means of a clamping nut screwable on the sleeve. A plurality of clamping jaws surround the clamping sleeve and the collet concentrically and are supported in each case by one end against their clamping cones. The clamping jaws have at their two ends clamping surfaces which cooperate with a conical surface of the tool receptacle and with a conical surface oppositely directed with respect to that conical surface in the centering extension.

摘要翻译： 一种用于将工具夹持在载体中的夹紧装置。 夹紧装置具有中空的中心延伸部或套管，并且在工具上设有围绕其的邻接表面。 设置在载体中的工具容器具有与定心延伸部相匹配的容纳孔和围绕孔的端面，抵靠面可以通过夹紧装置被压靠在该孔上。 夹紧装置包括可相对于中心轴线同轴运动的夹紧套筒和夹紧环或夹头，该夹紧环或夹头可在与夹紧套筒相反的方向上移动，两者都具有面向彼此的夹紧锥体。 夹头可通过可套在套筒上的夹紧螺母在夹紧套筒上轴向移动。 多个夹爪围绕夹紧套筒和夹头同心地围绕，并且在每种情况下由一端支撑在其夹紧锥体上。 夹爪在它们的两端处具有夹紧表面，该表面与工具容器的圆锥形表面配合，并且具有在定心延伸部中相对于该锥形表面相对定向的锥形表面。