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    • 5. 发明授权
    • Catheter hub assembly
    • 导管总成
    • US4391029A
    • 1983-07-05
    • US143072
    • 1980-04-24
    • Leonard F. CzubaDean G. Laurin
    • Leonard F. CzubaDean G. Laurin
    • A61M25/00B23P11/02B29C13/00
    • A61M25/0014Y10T29/4987Y10T29/49945
    • A catheter is provided with an improved hub assembly. The catheter defines an end which, in turn, defines a relatively enlarged transverse dimension for the catheter wall and a thickened annular lip, when compared with an adjacent portion of the catheter. A catheter hub defines a bore portion, the bore portion in turn defining a relatively constricted portion and a relatively enlarged portion. The enlarged catheter end is positioned within the relatively enlarged portion of the bore, while the adjacent portion of the catheter is positioned within the relatively constricted portion of the hub. A rigid tubular funnel fits within the bore of the catheter. As a result of this the collapse and subsequent passage of the enlarged catheter end through the relatively constricted portion of the hub is prevented.
    • 导管设置有改进的轮毂组件。 导管限定一端,当与导管的相邻部分相比时,其端部又限定用于导管壁和增厚的环形唇缘的相对扩大的横向尺寸。 导管毂限定孔部分,孔部分依次限定相对收缩的部分和相对扩大的部分。 扩大的导管端位于孔的相对扩大的部分内,而导管的相邻部分位于毂的相对缩小的部分内。 刚性管状漏斗装配在导管的孔内。 因此,防止了扩大的导管端部通过毂的相对收缩的部分的塌缩和随后的通过。
    • 6. 发明授权
    • In-flight encapsulation of particles
    • 飞行器封装颗粒
    • US4353962A
    • 1982-10-12
    • US264822
    • 1981-05-18
    • Chester M. HimelNathan F. Cardarelli
    • Chester M. HimelNathan F. Cardarelli
    • B05D1/02A01N25/28B01J13/06B01J13/12C08L25/06C08L31/04C08L33/06B32B5/16B01J13/00B29C6/00B29C13/00
    • C08L31/04A01N25/28B01J13/125C08L33/06C08L2205/20C08L25/06Y10T428/2998
    • A method and composition for the in-flight encapsulation of particles such as insecticides, herbicides, molluscicides, acaricides, fungicides, nutrients, pheromones, odorants, fragrances, attractants, repellents, trace elements, plant regulants, and the like is disclosed. The composition comprises, by weight, from 1 to 40 percent of said particles, from 0.1 to 25 percent of a film-forming polymer and from 35 to 99 percent of a liquid which renders said polymers soluble or dispersible. Often, other compounds may be added to impart desirable properties such as other film-forming polymers, crosslinking agent film modifying agents, core agents, and adhesives to improve adhesion to a target. The particle may be in a true solution, suspended, or emulsified through the action of surfactants and/or emulsifying agents. The film-forming polymers include various acrylic polymers and interpolymers of alpha-beta olefinically unsaturated carboxylic acids and N-methylol acrylic amides, as set forth in U.S. Pat. No. 3,007,887. The molecular weight of the polymer generally determines whether the polymer-solvent phase is a solution, a colloidal dispersion, or an emulsion dispersion. Upon ejection from a spray apparatus and during flight through the intervening atmosphere, the solution or dispersion rapidly loses the solvent or carrier liquid component via evaporation, coacervation occurs, and a polymeric membrane forms about the particle. Control of the encapsulated particle size can be achieved through selection of the spray system and of the non-volatiles in the spray at the moment of droplet formation.
    • 公开了用于诸如杀虫剂,除草剂,杀软体动物剂,杀螨剂,杀真菌剂,营养物质,信息素,气味剂,香料,引诱剂,驱避剂,微量元素,植物调节剂等颗粒的飞行中包封的方法和组合物。 该组合物包含1至40%的所述颗粒,0.1至25%的成膜聚合物和35至99%的液体,使所述聚合物溶解或分散。 通常,可以加入其它化合物以赋予所需的性能,例如其它成膜聚合物,交联剂膜改性剂,芯剂和粘合剂,以改善与靶的粘合性。 颗粒可以是真正的溶液,通过表面活性剂和/或乳化剂的作用悬浮或乳化。 成膜聚合物包括各种丙烯酸聚合物和α-β-烯属不饱和羧酸和N-羟甲基丙烯酰胺的互聚物,如美国专利No. 第3,007,887号。 聚合物的分子量通常决定聚合物 - 溶剂相是溶液,胶体分散体或乳液分散体。 当从喷雾装置喷射并且在穿过中间气氛的飞行过程中,溶液或分散体通过蒸发快速地损失溶剂或载液组分,凝聚发生,并且聚合物膜围绕颗粒形成。 可以通过在液滴形成时选择喷雾系统和喷雾中的非挥发物来实现对包封的粒度的控制。