Self-locking and self-sealing nail

Claim 1

IN COMBINATION, A RAIL FORMED FROM A SHEET OF METAL AND COMPRISING A DRIVING SHANK, A HOLDING SHANK ADJACENT TO SAID DRIVING SHANK AND LOCATED RELATIVE THERETO SUCH THAT A VOID IS ESTABLISHED BETWEEN THE SHANKS, SAID HOLDING SHANK BEING LATERALLY BENDABLE AND SAID DRIVING SHANK BEING POINTED AT THE PENETRATING END OF THE NAIL AND RELATIVELY RIGID AGAINST LATERAL BENDING, A COLLAPSIBLE HEAD CONNECTING SAID SHANKS AT THE HEAD END OF THE NAIL, SAID HEAD COMPRISING AN UPPER DRIVING MOTION CONNECTED TO SAID DRIVING SHANK AND PROVIDING A STRIKING SURFACE ADAPTED TO BE STRUCK BY A TOOL TO DRIVE THE NAIL, AND A LOWER ABUTMENT PORTION INTEGRAL WITH AND LATERALLY DISPLACED FROM SAID DRIVING PORTION AND CONNECTED TO SAID HOLDING SHANK THEREBY DEFINING A HOLLOW SPACE WITHIN THE HEAD, SAID LOWER ABUTMENT ALLOWING SAID HEAD TO BE COLLASPED WHEN THE NAIL IS DRIVEN HOME AND THEREBY PRODUCING RELATIVE LONGITUDINAL MOVEMENT BETWEEN THE SHANKS, SAID HOLDING SHANK HAVING A RELATIVELY WEAK PORTION INTERMEDIATE ITS ENDS FOR ESTABLISHING A PREDETERMINED BENDING PLACE IN THE SHANK, MEANS COMPRISING A PROJECTION ON SAID HOLDING SHANK AND A COOPERATING APERTURE ON SAID DRIVING SHANK INTO WHICH SAID PROJECTION EXTENDS TO ENGAGE THE DRIVING SHANK AND PROVIDE A FULCRUM POINT ABOUT WHICH THE PENETRATING END PORTION OF SAID HOLDING SHANK IS CAUSED TO BEND LATERALLY AWAY FROM THE DRIVING SHANK UPON SAID RELATIVE MOVEMENT BETWEEN THE SHANKS WHEREBY SAID HOLDING SHANK WILL MOVE LATERALLY AWAY FROM SAID DRIVING SHANK AND SAID VOID WILL BE ENLARGED, AND SEALING MATERIAL IN SAID VOID BETWEEN THE SHANKS AND IN SAID HOLLOW SPACE IN SAID HEAD, SAID SEALING MATERIAL COMPRISING A FOAMED THERMOSETTING SYNTHETIC RESIN PLACED IN SAID VOID AND SAID HOLLOW SPACE AS A LIQUID CONTAINING AND FOAMING AGENT AND EXPANDED IN SITU TO ESTABLISH A FOAMED THERMOSETTING SYNTHETIC RESIN MASS ADHERED TO PORTIONS OF SAID HEAD OF THE NAIL AND BETWEEN AT LEAST THE UPPER PORTIONS OF SAID SHANKS AND HELD IN COMPRESSION THEREBY SUCH THAT AT LEAST A PORTION OF SAID MASS OF SEALING MATERIAL IN SAID HEAD IS FORCED BETWEEN SAID UPPER SHANK PORTIONS TO AID IN SEALING ANY SPACE THEREBETWEEN WHEN THE NAIL IS DRIVEN HOME.