Lamp bulb stabilizing filament centering tube within a sealable capsule

Claim 1

A BULB SOCKET COMPRISING A SINGLE PIECE CYLINDRICAL SOCKET TUBE HAVING RELATIVELY WIDE MANUFACTURING TOLERANCES AND INCLUDING A RADIALLY ENLARGED PORTION ADJACENT ONE END THEREOF, MEANS AT SAID ONE END OF THE SOCKET TUBE FOR SECURING THE SOCKET TUBE IN AN OPENING, A SINGLE COMBINED BULB STABILIZING AND FILAMENT CENTERING SLEEVE HAVING RELATIVELY NARROW MANUFACTURING TOLERANCES SECURED WITHIN THE OTHER END OF THE SOCKET TUBE, BAYONET SLOTS IN ONE END OF THE COMBINED BULB STABILIZING AND FILAMENT CENTERING SLEEVE ADJACENT THE RADIALLY ENLARGED PORTION OF THE SOCLET TUBE FOR SECURING A LIGHT BULB IN THE ONE END OF THE SLEEVE, ONE OF SAID SOCKET TUBE AND SLEEVE HAVING A RADIALLY INWARDLY EXTENDING FLANGE AT THE OTHER END THEREOF, THE ONE END OF THE BULB STABILIZING AND FILAMENT CENTERING SLEEVE ALSO HAVING AXIALLY EXTENDING SLOTS THEREIN AND BEING TAPERED RADIALLY INWARDLY AXIALLY OUTWARDLY, AN INSULATING CORE POSITIONED WITHIN THE OTHER END OF THE BULB STABILIZING AND FILAMENT CENTERING SLEEVE AND SOCKET TUBE, AT LEAST ONE PASSAGE IN SAID CORE EXTENDING AXIALLY OF SAID SOCKET TUBE AND SLEEVE, A CONTACT MEMBER EXTENDING THROUGH SAID PASSAGE MOVABLE AXIALLY WITHIN THE OTHER END OF THE SOCKET TUBE AND SLEEVE AND SPRING MEANS FOR URGING THE CONTACT MEMBER TOWARD THE ONE END OF THE SOCKET TUBE AND SLEEVE.