Portable lamp switch

Claim 1

IN A PORTABLE HAND LAMP, A CASING OF ELECTRICAL INSULATION MATERIAL, FIRST AND SECOND CONTACT MEANS INSIDE OF SAID CASING FOR CONNECTION TO A SOURCE OF CURRENT ADAPTED TO BE DISPOSED INSIDE OF SAID CASING FOR ENERGIZING A BULB ARRANGED IN CIRCUIT WITH SAID SOURCE AND CONTACT MEANS, SWITCH MECHANISM FOR ELECTRICALLY INTERCONNECTING SAID FIRST AND SECOND CONTACT MEANS TO COMPLETE SAID ENERGIZING CIRCUIT, AN EXTERNAL POCKET AND SAID CASING DEFINED BY A WALL PORTION OF SAID CASING, A COVER SECURED TO SAID CASING OVER SAID POCKET AND DEFINING A CHAMBER WITH SAID POCKET FOR RECEIVING AT LEAST A PART OF SAID SWITCH MECHANISM, SAID COVER HAVING A SLOT THEREIN, A THROUGH PASSAGE IN SAID WALL PORTION CONNECTING SAID CHAMBER WITH THE INSIDE OF SAID CASING, SAID SWITCH MECHANISM COMPRISING THIRD AND FOURTH CONTACT MEANS INSIDE SAID CASING AND SECURED THERETO IN ELECTRICAL CIRCUIT WITH EACH OTHER, ONE OF SAID THIRD AND FOURTH CONTACT MEANS BEING IN ELECTRICAL CONTACT WITH ONE OF SAID FIRST AND SECOND CONTACT MEANS AND THE OTHER OF SAID THIRD AND FOURTH CONTACT MEANS CONFRONTING SAID PASSAGE AND BEING OPERABLE FOR ESTABLISHING AN ELECTRICAL CIRCUIT WITH THE OTHER OF SAID FIRST AND SECOND CONTACT MEANS FORM A NORMALLY NON-CIRCUIT MAKING RELATIONSHIP THEREWITH, SAID SWITCH MECHANISM FURTHER COMPRISING OPERATING MEANS FOR SAID OTHER OF SAID THIRD AND FOURTH CONTACT MEANS, SAID OPERATING MEANS COMPRISING AN OPERATING MEMBER HAVING AN OPERATING PORTION WITHIN SAID CHAMBER, AN OPERATING LINK IN SAID PASSAGE AND A CAP OVER THE CHAMBER END OF SAID PASSAGE FORMING A FLUID SEAL BETWEENM SAID CHAMBER AND THE INSIDE OF SAID CASING AND INCLUDING