Method of installation of moldable insert in sandwich panel

  • US 3,271,498 A
  • Filed: 01/27/1964
  • Issued: 09/06/1966
  • Est. Priority Date: 01/27/1964
  • Status: Expired due to Term
First Claim
Patent Images

1. IN THE ART OF INSTALLING A FASTENER INSERT IN A SANDWICH PANEL EMBODYING A FRAGILE, LOW DENISTY CORE SANDWICHED BETWEEN SPACED SOLID SKIN SHEETS, THE METHOD COMPRISING THE FOLLOWING STEPS:

  • PROVIDING A HOLE IN SAID PANEL BEGINNING WITH AN APERTURE IN ON OF SAID SKIN SHEETS AND EXTENDING INTO SAID CORE;

    ULITIZING AN INERT INCLUDING A MOUNTING HEAD PROPORTIONED TO FIT SNUGLY WITHIN SAID APERTURE, AND HAVING A PAIR OF SAPCED PORTS THEREIN, AND A HOLLOW BODY OF SMALLER DIAMETER THAN SAID HEAD, EXTENDING AXIALLY THEREFROM AND RECEIVABLE IN SAID HOLE WITHIN SAID CORE;

    PROJECTING SAID INSERT INTO SAID HOLE AND MOVING SAID HEAD INTO CLOSING RELATION TO SAID APERTURE;

    PROVIDING A TEMPORARY SUPPORTING ATTACHMENT BETWEEN SAID HEAD AND SKIN SHEET;

    SUBSEQUENTLY INJECTING POTTING MATERIAL THROUGH ONE OF SAID PORTS INTO SAID HOLE BY APPLYING THE NOZZLE OF AN INJECTION GUN TO ONE OF SAID PORTS;

    VENTING SAID HOLE THROUGH THE OTHER PORT AS THE POTTING MATERIAL FILLS THE HOLE AND DISPLACES AIR THEREFROM;

    VISUALLY INSPECTING SAID BENTING PORT TO AVOID INJECTION OF EXCESS POTTING MATERIAL INTO THE HOLE;

    ARRESTING THE INJECTION OPERATION MATERIAL INTO THE HOLE;

    ARRESTING THE ININJECTED AS THUS DETERMINED;

    WITHDRAWING SAID GUN FROM THE INSERT BEFORE SAID POTTING MATERIAL HAS SET AND UTILIZING SAID TEMPORARY SUPPORTING ATTACHMENT TO HOLD SAID INSERT IN POSITION WHILE SAID POTTING MATERIAL HARDENS AROUND SAID INSERT.

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