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    • 3. 发明授权
    • Tire pressure control system
    • 轮胎压力控制系统
    • US6098682A
    • 2000-08-08
    • US236156
    • 1999-01-22
    • Janos Kis
    • Janos Kis
    • B60C23/00B60C23/10
    • B60C23/003Y10T137/36
    • A tire pressure control system and method includes a pneumatic control unit, a pressure sensor, a rotary seal associated the tire and a wheel valve rotating with the tire. The system is connected to a compressed air source and the control unit is connected through a connecting line and the rotary seal with the wheel valve. The position of the wheel valve is a function of the pressure in the connecting line. To inflate and vent a tire and to reduce the number of components, the wheel valve has a closed position, an open position wherein a connection is established between the control unit and the tire, and a venting position that opens to the atmosphere. The wheel valve is maintained in its open position as long as an inflation pressure exists in the connecting line. The wheel valve moves into its venting position as long as the pressure in the connecting line that exceeds the inflation pressure by at least a pre-determined value. The wheel valve moves into its closed position when a closing pressure exists in the connecting line which is less than the inflation pressure by at least a pre-determined pressure difference.
    • 轮胎压力控制系统和方法包括气动控制单元,压力传感器,与轮胎相关联的旋转密封件和与轮胎一起旋转的轮毂。 该系统连接到压缩空气源,控制单元通过连接线连接,旋转密封与轮阀连接。 轮阀的位置是连接线中的压力的​​函数。 为了使轮胎充气和排气并减少部件的数量,轮阀具有关闭位置,在控制单元和轮胎之间建立连接的打开位置以及通向大气的排气位置。 只要连接线上存在充气压力,车轮阀就保持打开位置。 只要连接线中的压力超过充气压力至少达到预定值,轮阀便进入其排气位置。 当连接线中存在小于充气压力至少预定压力差的闭合压力时,轮阀移动到其关闭位置。
    • 5. 发明授权
    • Process for the preparation of aluminum oxide carboxylate polymers
containing at most two percent by weight of ester
    • 制备含二氧化铈羧酸酯聚合物的方法,以二酯重量百分比计
    • US5075473A
    • 1991-12-24
    • US521048
    • 1990-05-03
    • Istvan KantorFerenc DenesJanos KisJanos AuerLajos PeterfyL. Peter Farkas.ANG.ntal MatravolgyiJozsef HorvathJozsef Toth
    • Istvan KantorFerenc DenesJanos KisJanos AuerLajos PeterfyL. Peter Farkas.ANG.ntal MatravolgyiJozsef HorvathJozsef Toth
    • C07C29/00C07C31/00C08G59/62C08G79/10C09K3/00C10M119/30
    • C10M119/30C08G79/10C09K3/00C10M2227/09
    • The invention relates to a novel process for the preparation of aluminum oxide carboxylate polymers containing at most 2% by weight of ester by reacting an aluminum alkoxide of the general formula Al(OR).sub.3, wherein R stands for a C.sub.2-5 alkyl group, dissolved in an aromatic or aliphatic hydrocarbon with a solution of a C.sub.8-22 aliphatic or alicyclic monocarboxylic acid or carboxylic acid mixture and water in a C.sub.2-5 alkanol and removing the alkanol(s).The process according to the invention comprises introducing the solution of the aluminum alkoxide to a tube reactor having a 10 to 200 length/diameter ratio at a temperature exceeding by 15.degree.to 50.degree.C. the boiling point of the higher boiling alkanol among that corresponding to the alkanol component of aluminum alkoxide and that used as solvent; then feeding in the alkanolic solution containing the monocarboxylic acid and water, wherein the aluminum/monocarboxylic acid mole ratio is at least 10:1 and the aluminum/water mole ratio is at least 10:1; removing the alkanol formed in the reaction; returning the reaction mixture into the tube reactor; repeating this operation until the mono-carboxylic acid/aluminum mole ratio reaches 0.95 to 1.05 and the water/aluminum mole ratio reaches 0.9 to 1.0; and then making the product obtained free from alkanol.
    • 本发明涉及通过使通式为Al(OR)3的烷氧基铝反应其中R代表C 2-5烷基的方法制备含有至多2重量%酯的氧化铝羧酸盐聚合物的新方法, 用C8-22脂族或脂环族单羧酸或羧酸混合物和水溶解在C 2-5链烷醇中并除去链烷醇的芳族或脂族烃中。 根据本发明的方法包括在超过15℃至50℃的温度下将烷醇铝溶液引入具有10至200个长度/直径比的管式反应器中,其中相应的沸点高的烷醇的沸点 用作醇溶剂的烷醇成分; 然后进料含有一元羧酸和水的链烷醇溶液,其中铝/一元羧酸摩尔比为至少10:1,铝/水摩尔比为至少10:1; 除去反应中形成的链烷醇; 将反应混合物返回到管式反应器中; 重复该操作直到单羧酸/铝摩尔比达到0.95至1.05,水/铝摩尔比达到0.9至1.0; 然后使得到的产物不含链烷醇。