Patents by Inventor Earl Horntvedt

Earl Horntvedt 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).

  • Fastening assembly
    Patent number: 5590975
    Abstract: A fastening assembly for securing a plate member to a support includes a post member, a housing member, and a cam member mounted to the housing member. The post member extends through an opening in the plate member and cooperates with the cam member to place the plate member in compression between the housing and the support.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: January 7, 1997
    Inventor: Earl Horntvedt
  • Fume hood apparatus
    Patent number: 5056422
    Abstract: A fume hood includes an elongate tubular frame member which defines an elongate chamber, an inlet to the chamber, and an outlet from it. It also includes partitions secured to the frame member. Those partitions define a work space from which the frame member receives gases through its inlet.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: October 15, 1991
    Assignee: Hamilton Industries, Inc.
    Inventor: Earl Horntvedt