Indicating lamp device

Claim 1

A LAMP DEVICE COMPRISING A SOCKET HAVING AN ENLARGED END WALL AND AN ANNULAR INNER WALL DEFINING A LAMPRECEIVING PASSAGE OPENING AT THE ENLARGED END WALL, SAID INNER WALL HAVING ITS INNER SURFACE ADJACENT THE END WALL SLOPED OUTWARDLY AT AN ANGLE TO THE AXIS OF THE PASSAGE, AND A LAMP ADAPTED FOR INSERTION AND WITHDRAWAL INTO AND OUT OF THE PASSAGE THROUGH THE OPEN END WALL, SAID SOCKET INCLUDING MEANS FOR RETAINING THE LAMP IN INSERTED POSITION, SAID LAMP WHEN INSERTED BEING RELEASABLE FROM SAID MEANS FOR RETAINING IN RESPONSE TO APPLICATION TO THE LAMP OF A FORCE ACTING AXIALLY OF THE PASSAGE TOWARD THE OPEN END WALL, SAID LAMP HAVING A BULB WITH A ROUNDED PORTION EXTENDING BEYOND THE END WALL AND WITH AN ANNULAR SURFACE PORTION CURVED INWARDLY AND DOWNWARDLY TOWARD THE BOTTOM WALL OF THE SOCKET AND POSITIONED ADJACENT SAID SLOPED INNER WALL PORTION WHEN THE LAMP IS INSERTED, SAID END WALL HAVING AN OPENING COMMUNICATING WITH SAID PASSAGE TO RECEIVE AN ELEMENT FOR MOVEMENT TOWARD THE PASSAGE AXIS INTO CONTACT WITH SAID ANNULAR BULB SURFACE AND TO PERMIT MANIPULATION OF A RECEIVED ELEMENT TO ESTABLISH AN AXIAL FORCE COMPONENT ON SAID LAMP ACTING TO EJECT THE LAMP FROM THE SOCKET.