会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 22. 发明授权
    • Preparation of crosslinked 1,2,4-oxadiazole polymer
    • 交联的1,2,4-恶二唑聚合物的制备
    • US4273918A
    • 1981-06-16
    • US145284
    • 1980-04-30
    • Robert W. RosserIbrahim M. ShalhoubHanoi Kwong
    • Robert W. RosserIbrahim M. ShalhoubHanoi Kwong
    • C08G73/08
    • C08G73/08
    • New crosslinked 1,2,4-oxadiazole elastomers have been prepared by thermally condensing (a) monomer having the formula H.sub.2 N(HON)C-R-Q, wherein Q is a triazine ring-forming group such as nitrile or amidine or a mixture of such group with amidoxime, or (b) a mixture of said monomer with R[C(NOH)NH.sub.2 ].sub.2, with R in these formulas standing for a bivalent organic radical having the formula--(CX.sub.2).sub.p -, or --CFY(OCF.sub.2 CFY).sub.m O(CX.sub.2).sub.p O(CFYCF.sub.2 O).sub.n CFY--wherein X is fluorine or hydrogen, Y is fluorine or trifluoromethyl, p ranges from 1 to 18, and m+n ranges from 2 to 7. In the monomer charge, the overall proportions of amidoxime groups to triazine ring-forming groups varies depending on the extent of crosslinking desired in the final polymer.
    • 通过将(a)具有式H 2 N(HON)CRQ的单体(其中Q是三嗪环形成基团如腈或脒)或这些基团的混合物与 偕胺肟,或(b)所述单体与R [C(NOH)NH 2] 2的混合物,其中这些式中的R代表具有式 - (CX2)对 - 或-CFY(OCF2CFY)mO的二价有机基团 (CX2)pO(CFYCF2O)nCFY-其中X为氟或氢,Y为氟或三氟甲基,p为1至18,m + n为2至7.在单体电荷中,偕胺肟基团的总体比例 至三嗪环形成基团根据最终聚合物中所需的交联程度而变化。
    • 25. 发明授权
    • Magnetic heading reference
    • 磁头参考
    • US3943763A
    • 1976-03-16
    • US531647
    • 1974-12-11
    • Howell D. Garner
    • Howell D. Garner
    • G01R33/04G01C17/28G01C17/30G01C17/38G01C21/00
    • G01C17/38G01C17/30
    • This invention employs a magnetometer as a magnetic heading reference for a vehicle such as a small aircraft. The magnetometer is mounted on a directional dial in the aircraft in the vicinity of the pilot such that it is free to turn with the dial about the yaw axis of the aircraft. The invention includes a circuit for generating a signal proportional to the northerly turning error produced in the magnetometer due to the vertical component of the earth's magnetic field. This generated signal is then subtracted from the output of the magnetometer to compensate for the northerly turning error.
    • 本发明使用磁力计作为诸如小型飞行器的车辆的磁性方向基准。 磁力计安装在飞行员附近的飞行员的定向拨盘上,使其随着拨盘绕飞机的偏航轴自由转动。 本发明包括一个电路,用于产生与由于地球磁场的垂直分量而在磁力计中产生的北极转向误差成比例的信号。 然后从磁力计的输出中减去该生成的信号,以补偿北极转向误差。