Patents Assigned to Argus Corporation
  • Compressible foam earplug
    Patent number: 5119833
    Abstract: A compressible earplug is made of a slow recovery foam material. The earplug has a cross-section formed by a plurality of three or four sides wherein there is an angle no greater than 90.degree. between at least two sets of adjoining sides. In this manner, the plug can be cut from a sheet of material with virtually no waste resulting. Preferably a linear saw cut is used for form the plugs.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: June 9, 1992
    Assignee: Argus Corporation
    Inventor: William R. Powers