Panel mounted devices

Claim 1

IN A DEVICE OF THE TYPE DESCRIBED ADAPTED FOR MOUNTING IN AN OPENING IN A SUPPORTING PANEL, THE COMBINATION OF A HOUSING STRUCTURE HAVING AN OPEN FRONT END PORTION, RIGID SHOULDER MEANS PROJECTING LATERALLY FROM SAID FRONT END PORTION FOR ENGAGEMENT WITH THE FRONT OF A SUPPORTING PANEL, AND SIDE WALL PORTIONS EXTENDING REARWARDLY FROM SAID FRONT END PORTION; A SPRING METAL CLAMP MEMBER HAVING A BASE PORTION EXTENDING TRANSVERSELY OF SAID HOUSING, AND AT LEAST TWO LEGS PORTIONS EACH EXTENDING FORWARDLY FROM A DIFFERENT POINT ON SAID BASE PORTION, SAID POINTS BEING SPACED OUTWARDLY FROM THE LONGITUDINAL AXIS OF SAID HOUSING AND SPACED ANGULARLY FROM EACH OTHER, SAID CLAMP MEMBER HAVING A NORMAL, RELAXED CONFIGURATION SUCH THAT THE FORWARD ENDS OF SAID LEG PORTIONS ARE FREE TO MOVE FORWARDLY OUTSIDE OF SAID HOUSING STRUCTURE; AN OPERATING SCREW ROTATABLY CARRIED BY SAID HOUSING STRUCTURE AND EXTENDING AT LEAST GENERALLY ALONG THE LONGITUDINAL AXIS THEREOF, SAID BASE PORTION OF SAID CLAMP MEMBER BEING CONNECTED TO SAID SCREW AND SAID SCREW BEING OPERATIVE TO DRIVE SAID CLAMP MEMBER FORWARDLY RELATIVE TO SAID HOUSING STRUCTURE WHEN THE SCREW IS TURNED IN ONE DIRECTION AND REARWARDLY WHEN THE SCREW IS TURNED IN THE OTHER DIRECTION; AND SPACED, RIGID STOP MEANS CARRIED BY SAID HOUSING STRUCTURE AND DISPOSED BEHIND SAID BASE PORTION OF SAID CLAMP MEMBER TO ENGAGE SAID BASE PORTION AT POINTS ADJACENT SAID LEG PORTIONS, TURNING OF SAID SCREW IN SAID ONE DIRECTION BEING EFFECTIVE TO DRIVE SAID CLAMP MEMBER FORWARDLY INTO ENGAGEMENT WITH THE PANEL ON WHICH SAID HOUSING STRUCTURE IS TO BE SUPPORTED, AND TURNING OF SAID SCREW IN SAID OTHER DIRECTION DRIVING SAID CLAMP MEMBER REARWARDLY AGAINST SAID STOP MEANS AND DISTORTING SAID CLAMP MEMBER TO MOVE THE LEG PORTIONS THEREOF INWARDLY INTO RETRACTED PORTION TO ALLOW THE DEVICE TO BE REMOVED FORWARDLY THROUGH THE OPENING IN THE SUPPORTING PANEL.