利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

15 条记录 (耗时 0.021 秒)

    Drum tuning device
    2.
    发明授权
    Drum tuning device 失效
    鼓调谐装置

    公开(公告)号：US5392681A

    公开(公告)日：1995-02-28

    申请号：US263805

    申请日：1994-06-22

    申请人： Walter L. Hall

    发明人： Walter L. Hall

    IPC分类号： G10D13/02

    CPC分类号： G10D13/023

    摘要： A drum head tuning apparatus for tuning a drum or similar percussion instrument is disclosed. The invention includes a distensible bladder having an annular shape that is disposed between the drum hoop and the rigid outer circumferential lip of the drum head. When the head is mounted to the drum shell and the hoop is locked down by tensioning members to the lugs on the outside of the shell, air is pumped into the bladder to increased the bladder's volume. The expanding bladder displaces the circumferential lip and consequently pulls the drum head tighter over the opening in the shell to raise the pitch of the drum. Conversely, releasing air pressure from the bladder allows the stretched drum head to spring back thereby releasing tension and lowering the pitch of the drum.

    摘要翻译： 公开了一种用于调谐滚筒或类似打击乐器的鼓头调谐装置。 本发明包括具有环形形状的可膨胀囊，该环形形状设置在鼓箍和鼓头的刚性外圆周唇缘之间。 当头部安装到鼓壳上，并且通过将构件张紧到壳体的外部的凸耳上而将环箍锁定时，空气被泵入膀胱以增加膀胱的体积。 膨胀的囊移动圆周唇缘，从而将鼓头紧紧地拉过外壳中的开口，以提高滚筒的间距。 相反，从气囊释放空气压力允许拉伸的鼓头弹回，从而释放张力并降低鼓的间距。

    Production of dibenzopyrans, their isomeric fluorenols and dibenzothiopyrans
    5.
    发明授权
    Production of dibenzopyrans, their isomeric fluorenols and dibenzothiopyrans 失效
    二苯并吡喃，它们的异构芴醇和二苯并噻喃的生产

    公开(公告)号：US3947468A

    公开(公告)日：1976-03-30

    申请号：US374906

    申请日：1973-06-29

    申请人： Walter L. Hall ,  Jimmy L. Webb

    发明人： Walter L. Hall ,  Jimmy L. Webb

    IPC分类号： C07C205/20 ,  C07D311/78 ,  C07D311/80 ,  C07D311/96 ,  C07D335/04 ,  C07D335/10 ,  C07D311/82

    CPC分类号： C07D335/04 ,  C07C201/12 ,  C07D311/78 ,  C07D311/80 ,  C07D311/96 ,  C07D335/10 ,  C07C2103/18

    摘要： Phenols and thiophenols having an ortho-phenyl substituent react with most aldehydes and ketones in very strongly acidic liquid media to form a dibenzopyran or dibenzothiopyran. The dibenzopyrans, but not the dibenzothiopyrans, can be isomerized to their corresponding fluorenols. The pyran or thiopyran ring can be cleaved chemically or electrochemically to produce phenols and thiophenols which have an ortho substituent in the ortho position of the phenyl substituent of the starting phenol or thiophenol which is characteristic of the aldehyde or ketone reactant. These products as well as the fluorenols, being phenolic bodies, are useful as stabilizers and antioxidants.

    摘要翻译： 具有邻苯基取代基的苯酚和苯硫酚在非常强酸性的液体介质中与大多数醛和酮反应形成二苯并吡喃或二苯并噻喃。 二苯并吡喃而不是二苯并噻喃可以异构化成相应的芴醇。 吡喃或噻喃环可以化学地或电化学地裂解，以产生苯酚和苯酚，它们在起始苯酚或苯硫酚的邻位具有邻位取代基，这是醛或酮反应物的特征。 这些产品以及作为酚醛体的芴醇可用作稳定剂和抗氧化剂。

    Continuous extrusion impregnation molded article process
    6.
    发明授权
    Continuous extrusion impregnation molded article process 失效
    连续挤出浸渍成型制品工艺

    公开(公告)号：US5499441A

    公开(公告)日：1996-03-19

    申请号：US106092

    申请日：1993-08-11

    申请人： Thomas P. Dunton ,  Walter L. Hall ,  Erich O. Teutsch

    发明人： Thomas P. Dunton ,  Walter L. Hall ,  Erich O. Teutsch

    IPC分类号： E04D1/28 ,  B29B15/12 ,  B29C43/28 ,  B29C43/30 ,  B29C43/52 ,  B29C70/08 ,  B29C70/50 ,  B29K69/00 ,  B29K105/08 ,  B29K705/00 ,  B29L9/00 ,  B32B15/08 ,  B32B15/20 ,  B62D25/02 ,  E04C2/24 ,  B21B1/46

    CPC分类号： B32B15/08 ,  B29C70/088 ,  B29C70/506 ,  Y10T29/49982 ,  Y10T428/12347 ,  Y10T428/12444 ,  Y10T442/655

    摘要： This invention is directed to a process for preparing a molded thermoplastic fiber reinforced article having on at least one surface thereof a metal film and to a mold article prepared therefrom. The process comprises applying a first thermoplastic resin to at least one surface of a fiber mat core, then applying a metal film to at least one surface of the substrate of fiber mat core and thermoplastic resin and then molding the combination thereof under heat and pressure, preferably compression molding to form the finished article. A second thermoplastic resin may be applied to at least one surface of the combination of fiber mat core and first thermoplastic resin. Either the first and/or the second thermoplastic resin may be in film or molten form. If either or both are in film form, then it is preferable that the fiber mat core be heated prior to applying the film form of thermoplastic resin or at least the combination to preferably heated prior to molding thereof. The metal employed may be preferably copper or aluminum.

    摘要翻译： 本发明涉及一种制备模制的热塑性纤维增强制品的方法，该制品在其至少一个表面上具有金属膜和由其制备的模制品。 该方法包括将第一热塑性树脂施加到纤维垫芯的至少一个表面上，然后将金属膜施加到纤维垫芯和热塑性树脂的基材的至少一个表面上，然后在热和压力下成型其组合， 优选地进行压塑以形成最终制品。 可以将第二热塑性树脂施加到纤维毡芯和第一热塑性树脂的组合的至少一个表面上。 第一和/或第二热塑性树脂可以是薄膜或熔融形式。 如果其中一种或两者都是薄膜形式，则优选在施加热塑性树脂的薄膜形式之前或至少将组合物加热以在其模制之前优选加热。 所使用的金属可以优选为铜或铝。

    Fire resistant composites
    7.
    发明授权
    Fire resistant composites 失效
    耐火复合材料

    公开(公告)号：US5344866A

    公开(公告)日：1994-09-06

    申请号：US66354

    申请日：1993-05-21

    申请人： Walter L. Hall

    发明人： Walter L. Hall

    IPC分类号： C08K3/22 ,  C08K3/34 ,  C08K7/14 ,  C08L101/00

    CPC分类号： C08K7/14 ,  C08K3/34

    摘要： Reinforced polymer composites having a thermoplastic matrix material, reinforcing glass fibers, and a heat-expandable material selected from a group consisting of unexpanded vermiculite and unexpanded perlite are provided exhibiting improved fire resistant properties. The composites are prepared by performing a dilute aqueous slurry of a solid heat-fusible organic polymer, glass reinforcing fibers, and a heat-expandable material selected from the group consisting of vermiculite and perlite, agitating the slurry and then dewatering the slurry to provide a mat of thermoplastic polymer particles, reinforcing glass fiber, and a heat-expandable material. The mat is dried and then stamped under pressure and heat to consolidate the thermoplastic material to form a sheet-like composite structure. The composites exhibit reduced levels of early smoke generation and/or early heat generation.

    摘要翻译： 提供具有热塑性基体材料，增强玻璃纤维和选自非膨胀蛭石和未膨胀珍珠岩的热膨胀性材料的增强聚合物复合材料具有改善的耐火性能。 通过进行固体热熔性有机聚合物，玻璃增强纤维和选自蛭石和珍珠岩的热膨胀性材料的稀释含水浆料制备复合材料，搅拌浆料，然后使浆料脱水以提供 热塑性聚合物颗粒垫，增强玻璃纤维和热膨胀性材料。 将垫干燥，然后在压力和热下冲压以固结热塑性材料以形成片状复合结构。 复合材料表现出早期烟雾产生和/或早期发热的水平降低。