Method for securing a metal collar or grummet in the orifice of a metal barrel and elements used for this purpose

Claim 2

METHOD FOR SECURING A METAL COLLAR IN THE ORIFICE OF A METAL BARREL, WHICH COMPRISES THE STEPS OF INTERPOSING AN ELASTIC RING BETWEEN THE ERECT NECK SURROUNDING THE ORIFICE OF THE BARREL AND A U-SHAPED CHANNEL PROVIDED IN THE PERIPHERAL FACE OF THE METAL COLLAR TO BE SECURED IN SAID ORIFICE, AND DEFORMING SAID NECK AT THE PERIPHERY THEREOF SO AS TO FORM AN ANNULAR GROOVE OF V-SHAPED CROSS SECTION THEREIN WHICH PENETRATES INTO SAID PERIPHERAL CHANNEL IN SAID COLLAR WHILE COMPLETELY ENCLOSING THE RING BETWEEN SAID INDENTATION AND THE BOTTOM AND SIDE WALLS OF SAID PERIPHERAL CHANNEL, AND CONTACTING THE OUTER EDGES OF SAID CHANNEL ALONG TWO CONTINUOUS CIRCUMFERENTIAL LINES OF CONTACT BETWEEN THE DEFORMED PORTION OF THE NECK AND THE EDGE PORTIONS OF THE CHANNEL SO AS TO CAUSE SAID ELASTIC RING TO EXERT ELASTIC PRESSURE ON ALL PARTS DELIMITING SAID ENCLOSURE AND PRODUCING A FLUID SEALED AND INTERLOCKED JOINT BETWEEN SAID NECK AND COLLAR.

Claim 3

CLOSURE DEVICE FOR AN ORIFICE OF A VESSEL, SAID ORIFICE BEING ENCLOSED BY AN UPSTANDING NECK AND SAID CLOSURE DEVICE COMPRISING A COLLAR HAVING INNER THREADS AND A PERIPHERAL CHANNEL WITH A SUBSTANTIALLY U-SHAPED CROSS SECTION, SAID COLLAR BEING LOCATED IN SAID ORIFICE AND BEING SURROUNDED BY SAID NECK; AN ELASTIC RING LOCATED IN SAID CHANNEL; SAID NECK HAVING A PERIPHERAL ANNULAR GROOVE OF SUBSTANTIALLY V-SHAPED CROSS SECTION PENETRATING IN SAID CHANNEL AGAINST SAID ELASTIC RING AND CONTACTING SAID CHANNEL ALONG TWO CONTINUOUS CIRCUMFERENTIAL LINES, THEREBY PRODUCING A FLUID SEALED AND INTERLOCKED JOINT BETWEEN SAID NECK AND SAID COLLAR, SAID NECK BEING BENT OVER THE UPPER PORTION OF SAID COLLAR; A PLUG SCREWED IN SAID INNER THREADS OF SAID COLLAR; A CAPSULE MOUNTED ON SAID COLLAR AND HAVING A CYLINDRICAL PORTION WITH A CIRCUMFERENTIAL INDENTATION ENGAGING SAID V-SHAPED GROOVE, AND A GASKET INTERPOSED BETWEEN SAID INDENTATION AND SAID GROOVE.

Claim 4

CLOSURE DEVICE FOR AN ORIFICE OF A VESSEL, SAID ORIFICE BEING ENCLOSED BY AN UPSTANDING NECK AND SAID CLOSURE DEVICE COMPRISING A COLLAR HAVING INNER THREADS AND A PERIPHERAL CHANNEL WITH A SUBSTANTIALLY U-SHAPED CROSS SECTION, SAID COLLAR BEING LOCATED IN SAID ORIFICE AND BEING SURROUNDED BY SAID NECK; AN ELASTIC RING LOCATED IN SAID CHANNEL; SAID NECK HAVING A PERIPHERAL ANNULAR GROOVE OF SUBSTANTIALLY V-SHAPED CROSS SECTION PENETRATING IN SAID CHANNEL AGAINST SAID ELASTIC RING AND CONTACTING SAID CHANNEL ALONG TWO CONTINUOUS CIRCUMFERENTIAL LINES, THEREBY PRODUCING A FLUID SEALED AND INTERLOCKED JOINT BETWEEN SAID NECK AND SAID COLLAR, SAID NECK BEING BENT OVER THE UPPER PORTION OF SAID COLLAR; A PLUG SCREWED IN SAID INNER THREADS OF SAID COLLAR; A CAPSULE MOUNTED ON SAID COLLAR AND HAVING A CYLINDRICAL PORTION WITH A CIRCUMFERENTIAL INDENTATION ENGAGING SAID V-SHAPED GROOVE, AND A GASKET INTERPOSED BETWEEN SAID INDENTATION AND SAID GROOVE.