Meltable plastic spacer for securing coil to tubular support and housing, and methodof assembly

Claim 1

IN COMBINATION, A PLASTIC CUP-SHAPED HOUSING COMPRISING INNER AND OUTER TUBULAR PORTIONS JOINED AT ONE END TO DEFINE AN ELONGATED ANNULAR SPACE OPEN TO THE OTHER END, AN ELECTRICAL WINDING COMPRISING A PLURALITY OF TURNS OF RELATIVELY HEAVY AND STIFF WIRE OF AXIAL EXTENT LESS THAN THE AXIAL EXTENT OF SAID ANNULAR SPACE AND SUPPORTED BY AND DERIVING CONCENTRIC SUPPORT DIRECTLY FROM ONE OF SAID TUBULAR PORTIONS, A RING-SHAPED SPACER PELLET OF PLASTIC MATERIAL SUBSTANTIALLY COAXIAL WITH THE HOUSING AXIS AND HAVING A MELTING POINT SUBSTANTIALLY LESS THAN THAT OF SAID HOUSING AND RECEIVED WITHIN SAID SPACE IN AXIALLY ABUTTING RELATION WITH THE CLOSED END OF SAID HOUSING AND IN AXIALLY ABUTTING RELATION WITH THE ADJACENT END OF SAID WINDING, A SECOND ELECTRICAL WINDING COMPRISING A PLURALITY OF TURNS OF RELATIVELY HEAVY AND STIFF WIRE SUPPORTED BY AND DERIVING CONCENTRIC SUPPORT DIRECTLY FROM SAID FIRST WINDING, SAID SPACER PELLET BEING FORMED AT THE RADIUS OF TURNS OF SAID SECOND WINDING WITH AN AXIALLY PROJECTING PORTION