Patents Assigned to Dart Industries
  • Picnic chest
    Patent number: 4143695
    Abstract: A chest suitable for use in picnicking formed by an upwardly opening container and lid structure for closing same. The lid has a central portion interposed between end portions. The lid end portions are hinged to the lid central portion to permit partially opening of the chest at its opposite ends. The lid central portion is further detachably hinged to the side walls of the container at diametrically opposed points to permit full opening of the chest or complete removal of the lid therefrom. The chest disclosed is formed by enclosing selectively dimensioned pieces of rigid heat insulating material in flexible waterproof covering material along with additional insulation material. Snap fastener mechanism associated with flaps joined with the lid central portion may be employed for detachably connecting the lid on the container structure.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: March 13, 1979
    Assignee: Dart Industries Inc.
    Inventor: Dalton Hoehn
  • Injection blow molding method and apparatus
    Patent number: 4144013
    Abstract: A method and apparatus of injection blow molding containers utilizing injection and blow mold members opening on horizontal parting lines wherein the core pins are moved radially and wherein the core pins are first positioned in a lower half of the mold and sequentially the upper half if closed upon the pin when closing the molds. Provision is made for an auxiliary work station to supplement the capabilities of the apparatus.
    Type: Grant
    Filed: December 1, 1977
    Date of Patent: March 13, 1979
    Assignee: Dart Industries Inc.
    Inventor: John B. Simmons
  • Dissolution of metals
    Patent number: 4141850
    Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and certain primary diols.
    Type: Grant
    Filed: November 8, 1977
    Date of Patent: February 27, 1979
    Assignee: Dart Industries Inc.
    Inventors: Philip D. Readio, John L. H. Allan
  • Dissolution of metals with a selenium catalyzed H.sub.2 O.sub.2 -H.sub.2 SO.sub.4 etchant containing t-butyl hydroperoxide
    Patent number: 4140646
    Abstract: Clean etchings at high rates are obtained using a solution containing sulfuric acid, hydrogen peroxide, a catalytic amount of a selenium compound of a +4 oxidation state and t-butyl hydroperoxide.
    Type: Grant
    Filed: November 8, 1977
    Date of Patent: February 20, 1979
    Assignee: Dart Industries Inc.
    Inventors: Ronald A. Kent, John L. H. Allan, Philip D. Readio
  • Stabilized hydrogen peroxide solutions
    Patent number: 4140772
    Abstract: Aqueous hydrogen peroxide solutions used in metal dissolution processes are effectively stabilized against decomposition caused by metal ion contaminants by addition of saccharin or an alkali-metal salt of saccharin to the solutions.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: February 20, 1979
    Assignee: Dart Industries Inc.
    Inventor: Theodore F. Korenowski
  • Universal planetary clamping device
    Patent number: 4140305
    Abstract: A rigid plate having a work piece supporting surface is securable to a machine tool. A plurality of spindles, each rotatable about an axis perpendicular to the support surface, are journalled within the plate. Engagement means carried by each spindle detachably receive attachment means for affixing a work piece to the supporting surface. The location of each engagement means is moveable relative the supporting surface in response to rotation of the respective spindle.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: February 20, 1979
    Assignee: Dart Industries Inc.
    Inventor: Yehuda Rabin
  • Electrolytic cell
    Patent number: 4139429
    Abstract: An electrolytic plating cell is provided, wherein by means of flow directional baffle arrangements a rapid, uniform parallel movement of the electrolyte past all electrode surfaces can be maintained, while minimizing energy losses in moving the electrolyte.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: February 13, 1979
    Assignee: Dart Industries Inc.
    Inventors: Frederick A. Steward, James H. Weet
  • Dissolution of metals-utilizing H.sub.2 O.sub.2 -H.sub.2 SO.sub.4 -thiosulfate etchant
    Patent number: 4130455
    Abstract: Improved metal dissolution rates are obtained when using a solution containing sulfuric acid, hydrogen peroxide and a catalytic amount of a thiosulfate of sodium or potassium.
    Type: Grant
    Filed: November 8, 1977
    Date of Patent: December 19, 1978
    Assignee: Dart Industries Inc.
    Inventors: Moenes L. Elias, Millard F. Good
  • Regeneration of plastic etchants
    Patent number: 4118295
    Abstract: A method useful in the regeneration of a spent chromic acid-sulfuric acid plastic etch solution and also in the recovery of such etchant chemicals from rinse water associated with a plastic etching process, which method involves an electrolytic treatment, in which oxidation of trivalent chromium impurities to the serviceable hexavalent state takes place simultaneously with expulsion of organic impurities from the solution.
    Type: Grant
    Filed: April 20, 1976
    Date of Patent: October 3, 1978
    Assignee: Dart Industries Inc.
    Inventors: Theodore Frank Korenowski, Leslie Emery Lancy
  • Humidifier with removable water receptacle
    Patent number: 4117045
    Abstract: A humidifier having an outer housing with a top opening covered with a removable top member. A power chassis and a rotatable drum having a web of water absorbent material about its circumference are mounted within the housing and are each removable through the top opening. A removable water container is located within the housing below the drum. The container is readily cleaned or replaced by lifting it out of the housing through the top opening.
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: September 26, 1978
    Assignee: Dart Industries Inc.
    Inventors: Fred G. Henke, Carl R. Spoeth, Jr.
  • Ball point pen back end closure
    Patent number: 4108559
    Abstract: A pen plug particularly useful in ballpoint pens as a stopper to prevent back leakage of ink from the ink reservoir of such pens and yet function to allow passage of air into the pen interior. Such plugs include a plurality of substantially continuous synthetic filaments such as cellulose acetate, natural fibrous threads and synthetic filaments or mixtures of differing synthetic filaments bundled, braided and preferably encased in a plastic sheath.
    Type: Grant
    Filed: July 21, 1976
    Date of Patent: August 22, 1978
    Assignee: Dart Industries Inc.
    Inventors: Franklin Dick, Peter H. Seckel
  • Curved sofa
    Patent number: D248521
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: July 18, 1978
    Assignee: Dart Industries Inc.
    Inventor: Rodney R. Haynes, Sr.
  • Sofa
    Patent number: D248699
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: August 1, 1978
    Assignee: Dart Industries Inc.
    Inventor: Rodney R. Haynes, Sr.
  • Sofa
    Patent number: D248701
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: August 1, 1978
    Assignee: Dart Industries Inc.
    Inventor: Rodney R. Haynes, Sr.
  • Sofa
    Patent number: D249104
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: August 29, 1978
    Assignee: Dart Industries Inc.
    Inventor: Rodney R. Haynes, Sr.
  • Coffeemaker
    Patent number: D250316
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: November 21, 1978
    Assignee: Dart Industries Inc.
    Inventors: David L. Painter, Daniel E. Gremonprez
  • Fryer
    Patent number: D250385
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: November 28, 1978
    Assignee: Dart Industries Inc.
    Inventors: Ron Babros, Norm Minsky
  • Food container
    Patent number: D250397
    Type: Grant
    Filed: August 26, 1976
    Date of Patent: November 28, 1978
    Assignee: Dart Industries Inc.
    Inventor: Hubert E. Christian
  • Frypan control or similar article
    Patent number: D250635
    Type: Grant
    Filed: February 6, 1976
    Date of Patent: December 26, 1978
    Assignees: Texas Instruments Incorporated, Dart Industries, Inc.
    Inventors: Richard H. Carlson, David P. Vieau, Arthur J. Schmitt
  • Tote bag
    Patent number: D251083
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: February 13, 1979
    Assignee: Dart Industries, Inc.
    Inventors: Harold Rabinowitz, Thomas L. Geller