Patents by Inventor Charles L. Smithson, Jr.

Charles L. Smithson, Jr. 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).

  • Sheet metal fan assembly
    Patent number: 4174924
    Abstract: A sheet metal fan exhibiting special utility as a radiator fan for an internal combustion engine. A spider carries the blades on its arms, the arms each having a radially extending stiffening rib in opposed relation to a complementary rib in its blade to thereby form a tube where the stiffening ribs are radially coextensive. The stiffening rib on each blade intersects a continuous, blade stiffening channel.
    Type: Grant
    Filed: August 16, 1977
    Date of Patent: November 20, 1979
    Assignee: Wallace Murray Corporation
    Inventor: Charles L. Smithson, Jr.
  • Sheet metal fan assembly
    Patent number: 4172691
    Abstract: A sheet metal fan exhibiting special utility as a radiator fan for an internal combustion engine. A spider carries the blades on its arms, the arms each having a radially extending stiffening rib in opposed relation to a complementary rib in its blade to thereby form a tube where the stiffening ribs are radially coextensive. The stiffening rib on each blade intersects a continuous, blade stiffening channel.
    Type: Grant
    Filed: August 16, 1977
    Date of Patent: October 30, 1979
    Assignee: Wallace Murray Corporation
    Inventors: Everad A. Comstock, Charles L. Smithson, Jr.