Patents by Inventor Alfred A. Black

Alfred A. Black 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: 6074179
    Abstract: A magnetotrictive peristaltic pump transfers a fluid from a supply chamber o a receiving chamber. The pump has a housing and a core section mounted within the housing. The core section is fabricated from a magnetostrictive material such as Terfenol-D, which can be made to expand directionally in the presence of a magnetic field. There is a fluid tight seal between the inner surface of the housing and the outer surface of the core section. Wrapped around the outer surface of the housing are a plurality of electrical coils. The positive terminal and the negative terminal of each coil are connected to a signal generator which generates direct current electrical signals to sequentially energize each coil. Energizing any one of the coils creates a magnetic field in the general area of the coil. In the presence of this magnetic field, the core section expands longitudinally resulting in lateral/radial shrinkage of the core section which creates a cavity in the general area of the magnetic field.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: June 13, 2000
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gregory Raymond Jokela, Stanley Alfred Black
  • Patent number: 4483281
    Abstract: A device positioned between the valve stem and cam rocker arm of an internal combustion engine having a lower valve spring retainer base and upper cap member with adjustment means associated therewith.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: November 20, 1984
    Inventor: Alfred A. Black
  • Patent number: 4469057
    Abstract: A device of the type for the adjustment of the gap between the valve stem and rocker arm or cam shaft of an internal combustion engine having a lower valve spring retainer base and upper cap member with adjustment means associated therewith incorporating an improved valve stem receipt member and improved cap retention member.
    Type: Grant
    Filed: December 31, 1981
    Date of Patent: September 4, 1984
    Inventor: Alfred A. Black
  • Patent number: 4321894
    Abstract: A device for the adjustment of the gap between the valve stem and rocker arm or cam shaft of an internal combustion engine having a lower valve spring retainer base and upper cap member with adjustment means associated therewith.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: March 30, 1982
    Inventor: Alfred A. Black