Patents by Inventor Mendel Krichevsky

Mendel Krichevsky 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).

  • Polyphase assembly
    Patent number: 4626815
    Abstract: There is provided a polyphase assembly for controlling A.C. devices and capable of producing an electrical impedance of a substantial resistive component. The assembly has a plurality of windings, separate for each phase, wound on and along a single, axially directed core. The core is constituted by at least one ferromagnetic body. The air boundary to air boundary thickness of at least the portions of the core covered by the windings is greater than 1.6 mm.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: December 2, 1986
    Assignee: Ben-Gurion University of the Negev Research and Development Authority
    Inventors: Mendel Krichevsky, Raul Rabinovici, Benjamin Sharir
  • Devices for controlling A.C. motors
    Patent number: 4100520
    Abstract: A device for controlling an A.C. motor having an electromagnetic field ining coil wound around a conductive element having at least one inwardly directed opening bound by surface areas thereof and having a gap a between the surface areas defined by the formula a .gtoreq. .delta., wherein .delta. is the wave penetrating depth of an instantaneous operating frequency of the induced electromagnetic energy, the coil being wound so as to surround the open space and the element.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: July 11, 1978
    Assignee: Ben-Gurion University of the Negev Research and Development Authority
    Inventor: Mendel Krichevsky