Articulate support arm assembly for optical devices

Claim 1

AN ADJUSTABLE SUPPORT FOR AN OPTICAL DEVICE COMPRISING A VERTICAL POST; A MOUNTING BRACKET SLIDABLE ON SAID POST AND CARRYING LOCKING MEANS FOR SECURING SAID BRACKET IN ADJUSTED POSITION ALONG SAID POST; AND AN ARTICULATE ARM ASSEMBLY MOUNTED AT ONE END ON SAID BRACKET FOR HORIZONTAL SWINGING WITH RESPECT TO THE BRACKET AND HAVING MEANS AT ITS OTHER END FOR CARRYING AN OPTICAL DEVICE, SAID ARM ASSEMBLY INCLUDING A PLURALITY OF ELONGATED, HORIZONTALLY DIRECTED ARM ELEMENTS ARRANGED IN SUCCESSIVE END-TO-END RELATION AND HAVING VERTICAL BORES IN THEIR ADJACENT ENDS OF THE ARM JOINT ELEMENTS BETWEEN SAID ADJACENT ENDS OF THE ARM ELEMENTS AND EACH HAVING TOP AND BOTTOM WALLS AND A VERTICAL CENTRAL WEB SPACING SAID WALLS TO PERMIT SAID ADJACENT END PORTIONS OF THE ARM ELEMENTS TO EXTEND BETWEEN SAID WALLS AT OPPOSITE SIDES OF SAID WEB, AND VERTICAL PIVOT PINS MOUNTED IN SAID WALLS AT SAID OPPOSITE SIDES OF THE WEB AND BEING RECEIVED IN SAID BORES OF THE ADJACENT END PORTIONS OF THE ARM ELEMENTS SO THAT EACH JOINT ELEMENT AND THE ARM ELEMENTS CONNECTED THEREBY ARE RELATIVELY SWINGABLE THROUGH APPROXIMATELY 180 DEGREES AND THE ARM ELEMENTS CONNECTED BY EACH JOINT ELEMENT ARE SWINGABLE RELATIVE TO EACH OTHER THROUGH APPROXIMATELY 360 DEGREES.