Patents Assigned to D & D Manufacturing
  • Patent number: 8813741
    Abstract: A solar energy collector system includes a base, and a parabolic trough collector carried by the base for reflecting sunlight to a longitudinal focal line. The parabolic trough collector includes a center section horizontally positioned with respect to ground, and opposing end sections adjacent the center section. Each end section is angled towards the ground. A conduit is positioned along the longitudinal focal line to receive the reflected sunlight. The conduit circulates a heat transfer liquid therethrough to be heated by the reflected sunlight.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: August 26, 2014
    Assignee: D & D Manufacturing
    Inventor: Dale E. Polk, Jr.
  • Patent number: 8070471
    Abstract: A molding apparatus includes a bottom platen, a bottom mold portion carried by the bottom platen, and a top platen overlying the bottom platen and the bottom mold portion. The top platen includes slots extending therethrough for receiving a molding material. The molding material is to be gravity deposited into the bottom mold portion. A top mold portion is carried by the top platen and is moveable between a molding material loading position and an article forming position. An actuator is coupled to the top mold portion for moving the top mold portion between the molding material loading position and the article forming position. The molding material loading position corresponds to when the top mold portion is non-overlying the bottom mold portion so that the molding material can be gravity deposited therein. The article forming position corresponds to when the top mold portion is overlying the bottom mold portion for molding an article.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: December 6, 2011
    Assignee: D & D Manufacturing
    Inventor: Dale E. Polk, Sr.
  • Publication number: 20110171339
    Abstract: A molding apparatus includes a bottom platen, a bottom mold portion carried by the bottom platen, and a top platen overlying the bottom platen and the bottom mold portion. The top platen includes slots extending therethrough for receiving a molding material. The molding material is to be gravity deposited into the bottom mold portion. A top mold portion is carried by the top platen and is moveable between a molding material loading position and an article forming position. An actuator is coupled to the top mold portion for moving the top mold portion between the molding material loading position and the article forming position. The molding material loading position corresponds to when the top mold portion is non-overlying the bottom mold portion so that the molding material can be gravity deposited therein. The article forming position corresponds to when the top mold portion is overlying the bottom mold portion for molding an article.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 14, 2011
    Applicant: D & D Manufacturing
    Inventor: DALE E. POLK, SR.