Patents by Inventor Walter N. Ecker

Walter N. Ecker 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).

  • Non-skid structural surface
    Patent number: 4366200
    Abstract: A nonskid structural surface (10) is disclosed. The nonskid surface (10) includes a plurality of planar strips (12) alternated with strips (14) having protrusions (16). Protrusion strips (14) preferably have pyramidal-shaped protrusions (16) with adjacent rows of protrusions (16) staggered and alternate rows aligned with one another. Each protrusion (16) has a four-sided pyramidal shape with a rounded apex (20) and a base (18) of four corners. A longer length between one set of opposite corners than width between a second set of opposite corners is preferred.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: December 28, 1982
    Assignee: Proform, Inc.
    Inventor: Walter N. Ecker