Patents by Inventor Johan K. Rademaker

Johan K. Rademaker 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).

  • Patent number: 4815934
    Abstract: An air deflector arrangement (100) is disclosed and adapted for use in ceilings and similar areas for selectively providing discrete air flow patterns in radial directions relative to the arrangement (100). The air deflector arrangement (100) comprises a perforated face (102) typically mounted in a downwardly-disposed configuration and coplanar with adjacent ceiling panels or the like. The face is latched or otherwise releasably connected to a somewhat frustum-shaped back panel (110) extending upwardly from the plane of the ceiling panels. A plurality of deflector blades (140) are pivotably secured to an eyelet fastener (160) connected at a central location on the face (102). Each of the deflector blades (140) is freely rotatable throughout a 360.degree. range of motion relative to each of the other blades. Selective blade configurations provide an infinite number of air flow patterns.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: March 28, 1989
    Assignee: Hart & Cooley, Inc.
    Inventor: Johan K. Rademaker
  • Patent number: D331102
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: November 17, 1992
    Assignee: Hart & Cooley, Inc.
    Inventor: Johan K. Rademaker
  • Patent number: D403752
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: January 5, 1999
    Assignee: Hart & Cooley, Inc.
    Inventor: Johan K. Rademaker