Motion-to-air-pressure transducer

Claim 1

AN ADJUSTABLE CONNECTING ROD ASSEMBLY COMPRISING: A FIRST, MANUALLY OPERABLE, U-SHAPED, SPRING CLIP; A THUMB PIECE MOUNTED ON ONE LEG OF SAID U AND PROVIDING MEANS FOR MOVING THE OPEN ENDS OF THE U TOWARD OR AWAY FROM EACH OTHER; A SOLID ROD CONNECTED AT ONE END TO SAID FIRST CLIP AND HAVING SCREW THREADS ON A PORTION OF ITS OUTER SURFACE; A HOLLOW, INTERMEDIATE LINK HAVING AT LEAST ONE SLOT THROUGH THE WALL THEREOF; A CONNECTOR CLIP CONNECTED TO A PORTION OF SAID INTERMEDIATE LINK ADJACENT ONE END THEREOF; A NUT MOUNTED ON THE SCREW THREADS ON SAID ROD AND LOCATED BETWEEN SAID INTERMEDIATE CLIP AND ONE END OF SAID INTERMEDIATE LINK SO AS TO CONNECT SAID INTERMEDIATE LINK TO SAID SOLID ROD; A SECOND, HOLLOW LINK HAVING AT LEAST ONE SLOT THROUGH THE WALL THEREOF AND TELESCOPING WITH SAID INTERMEDIATE LINK; A PAIR OF FLAT, T-SHAPED RETAINERS MOUNTED IN THE TELESCOPING PORTIONS OF SAID INTERMEDIATE LINK AND OF SAID SECOND LINK AND HAVING PORTIONS PROJECTING THROUGH THE SLOTS IN SAID LINKS; A COIL SPRING ENCIRCLING THE TELESCOPING PORTIONS OF SAID LINKS AND BEARING AT ITS ENDS AGAINST THE PROJECTING PORTIONS OF SAID RETAINERS; AND A SECOND, MANUALLY OPERABLE, U-SHAPED, SPRING CLIP MOUNTED ON A PORTION OF SAID SECOND LINK SPACED FROM THE TELESCOPING PORTIONS OF SAID LINKS.