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11. 发明授权

US5467492A Dry-cleaning of garments using liquid carbon dioxide under agitation as cleaning medium 失效
标题翻译：在搅拌下使用液体二氧化碳干燥清洁衣服作为清洁介质
公开(公告)号：US5467492A
公开(公告)日：1995-11-21
申请号：US236776
申请日：1994-04-29
申请人： Sidney C. Chao , Thomas B. Stanford , Edna M. Purer , Angela Y. Wilkerson
发明人： Sidney C. Chao , Thomas B. Stanford , Edna M. Purer , Angela Y. Wilkerson
IPC分类号： C01B32/50 , D06F43/00 , D06B15/09
CPC分类号： D06F43/007
摘要： Liquid carbon dioxide, in combination with agitation and, optionally, with process enhancers, such as surfactants, and solvents, such as water, is used to remove contaminants from garments or fabrics. Both apparatus and process are disclosed. Carbon dioxide-cleaned garments are rendered free of odor, require no drying, and the cost per unit solvent (by weight) is a fraction of that of conventional solvents.
摘要翻译：液体二氧化碳与搅拌和任选的加工增效剂（如表面活性剂）和溶剂（如水）的混合物用于从衣服或织物中除去污染物。公开了装置和方法。二氧化碳清洁的衣服没有气味，不需要干燥，每单位溶剂（重量比）的成本是常规溶剂的一小部分。

12. 发明授权

US5316591A Cleaning by cavitation in liquefied gas 失效
标题翻译：液化气体气蚀清洗
公开(公告)号：US5316591A
公开(公告)日：1994-05-31
申请号：US927443
申请日：1992-08-10
申请人： Sidney C. Chao , Edna M. Purer , Thomas B. Stanford , Carl W. Townsend
发明人： Sidney C. Chao , Edna M. Purer , Thomas B. Stanford , Carl W. Townsend
IPC分类号： B01D11/00 , B08B3/12 , B08B7/00 , D06F19/00 , D06F43/00 , D06F43/08 , H05K3/26 , C02F1/46
CPC分类号： D06F19/00 , B08B3/12 , B08B7/0021 , D06F43/007 , D06F43/08 , H05K3/26
摘要： Undesired material is removed from a chosen substrate by a process comprising the steps of (a) placing the substrate containing the undesired material in a cleaning chamber provided with cavitation-producing means; (b) introducing a liquefied gas, such as liquid carbon dioxide, into the cleaning chamber and contacting the substrate containing the undesired material with the liquid carbon dioxide at a temperature below its critical temperature; and (c) exposing the liquid carbon dioxide to the cavitation-producing means for a period of time sufficient to remove the undesired material from the substrate. The substrate containing the undesired material may optionally be contacted with carbon dioxide in the dense phase prior to and/or after the cavitation treatment to aid in removal of the undesired material. Further, spent liquid carbon dioxide may be treated to regenerate fresh liquid carbon dioxide which is recycled to the cleaning chamber. Other gases besides carbon dioxide which may be used include nitrous oxide, sulfur hexafluoride, and xenon.
摘要翻译：不期望的材料通过包括以下步骤的方法从所选择的衬底中移除：（a）将含有不需要的材料的衬底放置在设置有空化产生装置的清洁室中; （b）将液化二氧化碳等液化气体引入清洗室，并将含有不需要的材料的基材与液体二氧化碳在低于其临界温度的温度下接触; 和（c）将液体二氧化碳暴露于产生气蚀的装置一段足以从衬底去除不想要的材料的时间。在空化处理之前和/或之后，含有不想要的材料的基材可以任选地与致密相中的二氧化碳接触以帮助去除不需要的材料。此外，废液二氧化碳可以被处理以再生再循环到清洁室的新鲜液体二氧化碳。除二氧化碳之外的其他气体可以使用包括一氧化二氮，六氟化硫和氙。

13. 发明授权

US06346126B1 Acoustic-energy-assisted removal of soil from fabric in a gaseous environment 有权
标题翻译：在气体环境中声能去除织物中的土壤
公开(公告)号：US06346126B1
公开(公告)日：2002-02-12
申请号：US09453194
申请日：1999-12-02
申请人： Sidney C. Chao , Nelson W. Sorbo
发明人： Sidney C. Chao , Nelson W. Sorbo
IPC分类号： D06B330
CPC分类号： D06G1/00 , B08B7/026
摘要： A soiled piece of fabric is cleaned by mechanical agitation while the fabric is simultaneously subjected to acoustic energy in a gaseous environment wherein the piece of fabric is not immersed in a liquid cleaning medium. Mechanical agitation may be by gas jet action and/or by tumbling. The acoustic energy vibrates the fibers of the fabric to enhance the cleaning action. The piece of fabric may be chemically treated to mobilize the soil.
摘要翻译：通过机械搅拌清洁被污染的织物，同时织物在气体环境中同时受到声能，其中织物不浸没在液体清洁介质中。机械搅拌可能是通过气体喷射作用和/或通过翻滚。声能使织物的纤维振动以增强清洁作用。织物可以进行化学处理以移动土壤。

14. 发明授权

US5456759A Method using megasonic energy in liquefied gases 失效
标题翻译：在液化气中使用兆声波能量的方法
公开(公告)号：US5456759A
公开(公告)日：1995-10-10
申请号：US283927
申请日：1994-08-01
申请人： Thomas B. Stanford, Jr. , Sidney C. Chao
发明人： Thomas B. Stanford, Jr. , Sidney C. Chao
IPC分类号： B08B3/12 , B08B7/00 , D06F19/00 , D06F43/00 , D06F43/08 , H01L21/00 , H05K3/26 , B08B3/08
CPC分类号： H01L21/67028 , B08B3/12 , B08B7/0021 , D06F19/00 , D06F43/007 , D06F43/08 , H05K3/26
摘要： A process for removing undesired sub-micrometer particulates from a chosen substrate (16) comprising the steps of: (a) placing the substrate containing the undesired particulates in a cleaning chamber (12) provided with megasonic energy-producing means (20); (b) introducing a liquefied gas (22), such as liquid carbon dioxide, into the cleaning chamber and contacting the substrate containing the undesired particulates with the liquid carbon dioxide at a temperature below its critical temperature; and (c) exposing the liquid carbon dioxide to the megasonic energy-producing means for a period of time sufficient to remove the undesired particulates from the substrate. The substrate containing the undesired particulates may optionally be contacted with carbon dioxide in the dense phase prior to and/or after the treatment with megasonic energy to aid in removal of the undesired particulates. Further, spent liquid carbon dioxide may be treated to regenerate fresh liquid carbon dioxide which is recycled to the cleaning chamber. Other gases besides carbon dioxide which may be used include nitrous oxide, sulfur hexafluoride, and xenon. Further, gas mixtures and gas mixtures with suitable modifiers may be employed.
摘要翻译：一种用于从所选择的衬底（16）去除不想要的亚微米颗粒的方法，包括以下步骤：（a）将含有不需要的微粒的衬底放置在设置有兆声波能量产生装置的清洁室中; （b）将诸如液体二氧化碳的液化气体（22）引入清洁室中，并将含有不需要的颗粒的基材与液体二氧化碳在低于其临界温度的温度下接触; 和（c）将液体二氧化碳暴露于兆声波能量产生装置一段足以从衬底去除不需要的颗粒的时间。含有不需要的颗粒的基质可以任选地在紧密处理之前和/或之后与密集相中的二氧化碳接触，以帮助除去不需要的颗粒。此外，废液二氧化碳可以被处理以再生再循环到清洁室的新鲜液体二氧化碳。除二氧化碳之外的其他气体可以使用包括一氧化二氮，六氟化硫和氙。此外，可以使用具有合适的改性剂的气体混合物和气体混合物。

15. 发明授权

US5339844A Low cost equipment for cleaning using liquefiable gases 失效
标题翻译：使用液化气体清洁的低成本设备
公开(公告)号：US5339844A
公开(公告)日：1994-08-23
申请号：US82866
申请日：1993-09-07
申请人： Thomas B. Stanford,Jr. , Sidney C. Chao
发明人： Thomas B. Stanford,Jr. , Sidney C. Chao
IPC分类号： B01D11/00 , B08B3/08 , B08B3/12 , B08B5/00 , B08B7/00 , D06F19/00 , D06F43/00 , D06F43/08 , H01L21/304 , H05K3/26 , B08B3/02 , B08B13/00
CPC分类号： D06F43/007 , B08B3/12 , B08B7/0021 , D06F19/00 , D06F43/08 , H05K3/26
摘要： Precision cleaning of parts is performed with liquefiable gases, such as CO.sub.2, without the use of a complex and costly processor system. Rather, simplified and reliable performance for small scale and "low end" cleaning applications is accomplished without the use of pumps and condensers. The apparatus for removing undesired material from a chosen substrate comprises: (a) an enclosed cleaning chamber in a walled vessel for containing a liquid derived from a liquefiable gas and the substrate containing the undesired particulates and contaminants, the walled vessel adapted to withstand a maximum pressure of about 1,500 pounds per square inch (105.4 kg/cm.sup.2) at ambient temperature; (b) means for supporting the substrate in the cleaning chamber; (c) ultrasonic energy-producing transducer means attached to the walled vessel within the cleaning chamber; (d) inlet means attached to the walled vessel for introducing the liquefiable gas into the cleaning chamber under a pressure less than about 900 pounds per square inch (63.3 kg/cm.sup.2); (e) temperature control means connected to the cleaning chamber for controlling the temperature within the chamber up to about 50.degree. C.; (f) reservoir means for providing the liquefiable gas to the inlet means; (g) means for changing the liquefiable gas to the liquid; and (h) outlet means in the chamber for removing the liquid from the cleaning chamber. The liquid may then be further treated to remove particulates and organic contaminants and either recycled to the cleaning chamber or vented to the atmosphere. The process is especially applicable for general degreasing and particulate removal processes, when high precision cleaning is not required.
摘要翻译：零件的精密清洁是用液化气体（如二氧化碳）进行的，而不需要使用复杂且昂贵的处理器系统。相反，小规模和“低端”清洁应用的简化和可靠的性能完成，而无需使用泵和电容器。用于从所选择的衬底去除不需要的材料的设备包括：（a）围壁容器中的封闭清洁室，用于容纳源自可液化气体的液体，以及含有不期望的颗粒和污染物的衬底，该壁容器适于承受最大在环境温度下约1500磅/平方英寸（105.4kg / cm 2）的压力; （b）用于将基材支撑在清洁室中的装置; （c）连接到清洁室内的有壁容器的超声能量产生换能器装置; （d）连接到有壁容器的入口装置，用于在小于约900磅/平方英寸（63.3kg / cm 2）的压力下将可液化气体引入清洁室; （e）连接到清洁室的温度控制装置，用于控制室内的温度高达约50℃; （f）用于将液化气体提供给入口装置的储存装置; （g）将可液化气体改为液体的装置; 和（h）室中的出口装置，用于从清洗室中除去液体。然后可以进一步处理液体以除去微粒和有机污染物，并且再循环到清洁室或排放到大气中。当不需要高精度清洗时，该方法特别适用于一般的脱脂和微粒去除过程。

16. 发明授权

US5482211A Supercritical fluid cleaning apparatus without pressure vessel 失效
标题翻译：无压力容器的超临界流体清洗装置
公开(公告)号：US5482211A
公开(公告)日：1996-01-09
申请号：US230656
申请日：1994-04-21
申请人： Sidney C. Chao , Thomas B. Stanford, Jr. , Edward J. Palen , Chris Lee
发明人： Sidney C. Chao , Thomas B. Stanford, Jr. , Edward J. Palen , Chris Lee
IPC分类号： B05B9/00 , B05B9/03 , B05D1/02 , B08B3/02 , B08B7/00 , B05B1/24
CPC分类号： B05B9/005 , B05B9/002 , B05B9/03 , B05D1/025 , B08B3/02 , B08B7/0021
摘要： A nozzle for generating a supercritical fluid from a cleaning fluid. The nozzle includes a mechanism for directing the supercritical fluid onto a surface of a part to be cleaned. The nozzle comprises a body having (a) an interior portion which includes a mechanism for generating the supercritical fluid by suitable temperature and pressure increase of the cleaning fluid; (b) an inlet portion for introducing the cleaning fluid into the interior portion; (c) an outlet portion for directing the supercritical fluid generated in the interior portion onto the surface of the part to be cleaned; and (d) counteracting mechanism for resisting high pressure that is produced during the generation of the supercritical fluid so as to permit the nozzle to be maintained a suitable distance from the surface of the part to be cleaned so that the supercritical fluid impinges on the surface.
摘要翻译：一种用于从清洁流体产生超临界流体的喷嘴。喷嘴包括用于将超临界流体引导到待清洁部件的表面上的机构。喷嘴包括主体，其具有（a）内部部分，其包括用于通过适当的清洁流体的温度和压力增加来产生超临界流体的机构; （b）用于将清洁流体引入内部的入口部分; （c）用于将在内部产生的超临界流体引导到待清洁部件的表面上的出口部分; 和（d）用于抵抗在超临界流体产生期间产生的高压的抵消机构，以便允许喷嘴保持与要清洁的部件的表面适当的距离，使得超临界流体冲击在表面上。

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