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1. 发明授权

US4821545A Installation for the detensioning of expanded tubes, particularly in a heat exchanger 失效
标题翻译：安装用于放大膨胀管，特别是在热交换器中
公开(公告)号：US4821545A
公开(公告)日：1989-04-18
申请号：US55454
申请日：1987-05-28
申请人： Philippe Druelle , Pierre Vidal , Robert Saglio , Jean-Louis Tocci
发明人： Philippe Druelle , Pierre Vidal , Robert Saglio , Jean-Louis Tocci
IPC分类号： B23P9/04 , B24B39/00 , C21D7/06 , B21D7/06
CPC分类号： B23P9/04 , B24B39/006 , C21D7/06 , Y10T29/479
摘要： Detensioning of expanded tubes is brought by way of an installation using a rotopeening method. The tool is constituted by a cage moved along a helical path centered on the axis of the tube to be treated. The cage supports in rotary manner a shaft, whose axis is parallel and offcentered with respect to that of the cage. The shaft carries flexible plates, called brushes, whose ends are equipped with shot able to peen the inner wall of the tube during the rotation of the shaft. The helical path ensures a regular distribution of the impacts and consequently a uniform treatment of the surface.
摘要翻译：通过使用滚压方法的安装来实现扩管的分离。该工具由沿着待处理管的轴线的中心的螺旋路径移动的保持架构成。保持架以旋转的方式支撑轴，其轴线相对于保持架的轴线平行且偏心。轴带有柔性板，称为刷子，其端部装备有在轴的旋转期间能够喷射管的内壁的射流。螺旋路径确保冲击的规则分布，从而确保表面的均匀处理。

2. 发明授权

US4960650A Method of repairing or protecting an end of a metal tube in a heat exchanger and sleeve for implementing same 失效
标题翻译：在热交换器和套管中修复或保护金属管的端部以实现其的方法
公开(公告)号：US4960650A
公开(公告)日：1990-10-02
申请号：US366362
申请日：1989-06-15
申请人： Gilbert Vigneron , Jean Bezier , Thong Nguyen-Thanh , Pierre Vidal , Guy Zacharie , Lucien Guillemin
发明人： Gilbert Vigneron , Jean Bezier , Thong Nguyen-Thanh , Pierre Vidal , Guy Zacharie , Lucien Guillemin
IPC分类号： F28F11/02
CPC分类号： F28F11/02 , Y10T29/49352 , Y10T29/49742 , Y10T29/49748 , Y10T29/49911 , Y10T29/4994 , Y10T428/12347
摘要： To repair a corroded region of the end of a heat exchanger tube, a sleeve is inserted, then expanded into the tube both in the area of the tube sheet and beyond the corroded area, then local welds are made in each of the expanded regions. Thereafter, the end of the sleeve is expanded against the tube in a region inside the tube sheet and above the local weld.
摘要翻译：为了修复热交换器管的端部的腐蚀区域，插入套筒，然后在管板区域中扩展到管中并且超过腐蚀区域，然后在每个扩展区域中形成局部焊缝。此后，套管的端部在管板内部和局部焊缝上方的区域中相对于管扩张。

3. 发明授权

US5620706A Polyionic insoluble hydrogels comprising xanthan and chitosan 失效
标题翻译：包含黄原胶和壳聚糖的聚阴离子不溶性水凝胶
公开(公告)号：US5620706A
公开(公告)日：1997-04-15
申请号：US416025
申请日：1995-04-03
申请人： Severian Dumitriu , Esteban Chornet , Pierre Vidal
发明人： Severian Dumitriu , Esteban Chornet , Pierre Vidal
IPC分类号： A61K9/00 , A61K9/16 , A61K38/46 , A61K47/36 , C12N11/04 , A61K9/10 , A61K9/14
CPC分类号： C12N11/04 , A61K38/14 , A61K38/465 , A61K38/47 , A61K38/48 , A61K45/06 , A61K47/36 , A61K9/0014 , A61K9/1652 , Y10S514/944
摘要： A method for the preparation of insoluble hydrogels from the complexation of polycations and xanthan is reported. Stable hydrogels capable of retaining between 65 and 95 % weight water were prepared particularly with chitosan and xanthan. The water retention and properties of the hydrogels were studied as a function of the degree of acetylation of chitosan and the ratio chitosan/xanthan used in the preparation of the gel. The chitosan-xanthan complex was used to immobilize biological material. Hydrogels containing enzymes (for example endo-1,4-.beta.-xylanase and protease) either as single enzymes or as a binary system have been prepared. Immobilization varied between 85 and 98 % . The immobilized xylanase activity was significantly greater with respect to the free enzyme while the binary enzyme system promoted protease activity. Other hydrogels prepared with polybasic drugs complexed to xanthan with or without chitosan have been prepared. These complexes slowly dissociate in acidic media and provide for sustained release of compounds in near neutral pHs. Gels containing chitosan are stable in all physiological pHs and the immobilized molecules are released therefrom by diffusion.
摘要翻译：报道了从聚阳离子和黄原胶的络合制备不溶性水凝胶的方法。特别是用壳聚糖和黄原胶制备能够保持65至95重量％水的稳定的水凝胶。研究了水凝胶的保水性和性能，作为凝胶制备中壳聚糖的乙酰化程度和壳聚糖/黄原胶比例的函数。壳聚糖 - 黄原胶配合物用于固定生物材料。已经制备了含有酶（例如内-4,4-β-木聚糖酶和蛋白酶）的单独酶或二元体系的水凝胶。固定在85％和98％之间变化。相对于游离酶，固定化的木聚糖酶活性显着更大，而二元酶系统促进蛋白酶活性。已经制备了与具有或不具有壳聚糖的黄原胶复合的多元药物制备的其它水凝胶。这些复合物在酸性介质中缓慢解离并提供化合物在近中性pH值的持续释放。含有壳聚糖的凝胶在所有生理pH中都是稳定的，并且通过扩散将固定的分子从其中释放出来。

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