Patents by Inventor Arthur D. Siegel

Arthur D. Siegel 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).

  • Patent number: 4871260
    Abstract: A rotary processor for high-shear processing of plastic or polymeric materials comprises a rotor having end discs and at least one mixing disc therebetween, the rotor closely surrounded by a housing to defined annular processing chambers flanking each mixing disc, with a high-shear-mixing transfer gap defined between the mixing disc and the housing. Channel blocks are deployed at circumferentially spaced apart positions in adjacent chambers to cause transfer of material through the transfer gaps, with dispersive mixing occurring in the transfer gaps. Some embodiments have plural channel blocks in the chambers, evenly spaced apart. The channel blocks extend generally into and to the bottom of a chamber, and have two working surfaces divergent from a central region of the chamber and convergent toward the disc walls defining the chamber. The working surfaces and disc walls defined two high-shear-mixing recycle gaps through which a portion of the material passes and is mixed.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: October 3, 1989
    Inventors: Zehev Tadmor, Arthur D. Siegel, Jan-Chin Yang
  • Patent number: 4645418
    Abstract: Apparatus for pumping/pressurizing fluid materials such as viscous liquid polymers in which a shaft is provided with one or more blades which extend into and rotate in one or more annular channels. Inlet grooves conduct the liquid material through grooves in the shaft into the channel behind each blade. The walls of the channel apply a drag force to the material and the advancing blade pressurizes the material which is forced through axial grooves in the shaft to another pumping channel, or to an outlet. Close running fits or dynamic seals between the shaft and its bearings provide seals at opposite sides of each channel.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: February 24, 1987
    Assignee: Farrel Corporation
    Inventor: Arthur D. Siegel
  • Patent number: 4017735
    Abstract: A liquid sterilizer comprising an enclosure containing an ultraviolet lamp, an air lift pump to deliver turbulent, aerated liquid to the lower wall of the enclosure, and drain holes in the lower wall to return the liquid by gravity to the liquid tank. The enclosure is clamped to the edge of the tank of liquid with the lower wall of the enclosure close to the liquid surface and with the tube of the air lift pump immersed in the liquid. Air bubbles discharged at the lower end of the lift pump tube carry liquid to the enclosure.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: April 12, 1977
    Inventor: Arthur D. Siegel