Button assembly for pilot's helmet

Claim 1

IN A BUTTON ASSEMBLY FOR A PILOT''S HELMET OF THE TYPE COMPRISING A VISOR HOUSING; A REMOVABLE VISOR OR SIMILAR DEVICE AND SLOTTED MEANS IN THE VISOR HOUSING FOR HOLDING AND MOVING THE VISOR FROM A POSITION WITHIN THE HOUSING TO A POSITION IN FRONT OF THE WEARER''S EYES, SAID SLOTTED MEANS EXTENDING ALONG A PORTION OF THE EXTERNAL SURFACE OF SAID HOUSING AND A BUTTON ASSEMBLY WITH THE BUTTON EXTENDING THROUGH TO THE OUTSIDE OF THE HOUSING AND BEING ADJUSTABLE ALONG SAID SLOT FOR CONTROLLING THE POSITION OF THE VISOR WITH RESPECT TO THE HELMET, THE IMPROVEMENT COMPRISING SHAFT MEANS EXTENDING FROM WITHIN SAID VISOR HOUSING TO THE OUTSIDE SURFACE THEREOF, VISOR-CONNECTING MEANS SECURED TO THE INNER END OF SAID SHAFT, SAID VISOR CONNECTING MEANS COMPRISING A LOWER PORTION HAVING ONE DIMENSION SMALL ENOUGH TO PASS THROUGH THE SLOT OF SAID VISOR HOUSING, SAID VISOR CONNECTING MEANS COMPRISING AN UPPER PORTION WITH A FIRST AND SHORTER DIMENSION SMALL ENOUGH TO PASS THROUGH THE SLOT OF SAID VISOR HOUSING AND WITH SECOND AND LONGER DIMENSION WHICH EXTENDS BEYOND THE SIDES OF SAID SLOT IN ONE ANGULAR POSITION OF SAID SHAFT, THE UPPER PORTION OF SAID VISOR-CONNECTING MEANS HAVING A SUBSTANTIALLY STRAIGHT SIDED PROJECTION EXTENDING UPWARDLY FROM THE LONGER DIMENSION THEREOF WHICH IS PROPORTIIONED AND SHAPED TO FIT NON-ROTATABLY INTO SAID SLOT WHEN SAID UPPER PORTION OF SAID VISOR-CONNECTING MEANS IS POSITIONED TO EXTEND BELOW AND BEYOND THE SIDES OF SAID SLOT WHEREBY THE ANGULAR POSITION OF THE SHAFT AND ITS VISOR CONNECTING MEANS WITH RESPECT TO SAID SLOT IS FIXED WHEN THE PROJECTION OF THE UPPER PORTION OF SAID VISOR CONNECTING MEANS IS HELD WITHIN SAID SLOT, SAID SHAFT SHAFT MEANS HAVING EXTERNAL THREADS AT THE UPPER END PORTION THEREOF, ROTTABLE BUTTON MEANS HAVING AN INTERNALLY THREADED OPENING THEREIN ADAPTED TO RECEIVE THE THREADED END OF SAID SHAFT, MEANS WHEREBY THE BUTTON AND THE UPPER PORTION OF SAID VISOR CONNECTING MEANS COOPERATE TO FIX THE POSITION OF THE VISOR WITH RESPECT TO SAID SLOT.