Patents Assigned to David G. Haverty
  • Patent number: 5989473
    Abstract: A molding process in which a material with an open cell, porous structure 10 is placed, aligned or supported inside a suitable enclosed holding device. Another molding material 20 is subsequently injected into the said holding device while gas and/or pressure is sequentially applied to the said holding device, causing a synergistic interaction and joining between the said materials to take place. During the processing phase, gas is evenly dispersed throughout the porous core, effectively equalizing cavity pressure and permitting an even flow pattern to exist, encapsulating or sandwiching the said porous structure, thus forming a composite material with physical properties which are substantially greater than the individual components.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: November 23, 1999
    Assignee: David G. Haverty
    Inventor: David G. Haverty