Patents by Inventor Casparus W. De Waal

Casparus W. De Waal 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).

  • Corner profile for coupling channel members
    Patent number: 5165736
    Abstract: A profile for the coupling of adjoining channel members comprises a front wall for extending perpendicularly from a wall of the channel member, a back wall extending at least partially parallel to the front wall, a front flange connected to the front wall, a back flange connected to the back wall and a deformable sealing material in the space between the front wall, the back wall and the flanges. The profile is constructed by folding a strip of material along parallel fold lines. A deformable sealing material is applied to the strip, and when the strip is folded, the sealing material is deformed so as to fill a substantial portion of the space between the front wall, the back wall, the front flange and the back flange of the profile.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: November 24, 1992
    Inventor: Casparus W. De Waal
  • Method for preparing a corner profile fit for butting connection of closed channels
    Patent number: 4989314
    Abstract: A profile for the coupling of adjoining channel members comprises a front wall for extending perpendicularly from a wall of the channel member, a back wall extending at least partially parallel to the front wall, a front flange connected to the front wall, a back flange connected to the back wall and a deformable sealing material in the space between the front wall, the back wall and the flanges. The profile is constructed by folding a strip of material along parallel fold lines. A deformable sealing material is applied to the strip, and when the strip is folded, the sealing material is deformed so as to fill a substantial portion of the space between the front wall, the back wall, the front flange and the back flange of the profile.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: February 5, 1991
    Inventor: Casparus W. De Waal