Patents by Inventor Bob R. Powell

Bob R. Powell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Anhydrous electrorheological compositions including A.sub.5 MSi.sub.4 O.sub .
    Patent number: 5130038
    Abstract: Disclosed are electrorheological fluids having ceramic particles of high ion conductivity and a nonconducting or dielectric fluid. The high ion conductive particle may be a material having the formula A.sub.5 MSi.sub.4 O.sub.12, where A is a monovalent ion, such as a material comprising at least one selected from the group consisting of Li, Na, and Ag; and M is a trivalent ion, such as a material comprising at least one selected from the group consisting of Sc, Fe, Y, In, La, Ce, Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. The liquid phase may include a silicone fluid or mineral oil. In the case of a mineral oil, the oil may also include an amine-terminated polyester to improve stability of the fluid.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: July 14, 1992
    Assignee: General Motors Corporation
    Inventors: Raymond L. Bloink, Bob R. Powell
  • Anhydrous electrorheological compositions including Li.sub.y Si.sub.1-x A.sub.x O.sub.4
    Patent number: 5130039
    Abstract: Disclosed are electrorheological fluids having ceramic particles of high ion conductivity and a nonconducting or dielectric fluid. The high ion conductive particle may be a material having the formula Li.sub.y Si.sub.1-x Al.sub.x O.sub.4, where A is a material comprising at least one selected from the group consisting of Ge, P, and Ti, x ranges from 0 to 1, and y ranges from about 3 to about 4. The liquid phase may include a silicone fluid or mineral oil. In the case of a mineral oil, the oil may also include an amine-terminated polyester to improve stability of the fluid.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: July 14, 1992
    Assignee: General Motors Corporation
    Inventors: Raymond L. Bloink, Bob R. Powell
  • Anhydrous electrorheological compositions including Zr(HPO.sub.4).sub.2
    Patent number: 5130040
    Abstract: Disclosed are electrorheological fluids having ceramic particles of high ion conductivity and a nonconducting or dielectric fluid. The high ion conductive particle may be Zr(HPO.sub.4).sub.2.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: July 14, 1992
    Assignee: General Motors Corporation
    Inventors: Raymond L. Bloink, Kenneth M. Rahmoeller, Bob R. Powell