SYSTEM FOR PREDETERMINING CRITICAL VALUE OF DEVICE FOR INSPECTING RADIAL DEFORMATION OF TIRE, COMPOSED OF MEMBER FOR CONTROLLING PULLING FORCE CAUSED BY TIRE'S PRESSURE, BELLEVILLE WASHER, AND MEMBER FOR CONTROLLING STATE OF EQUILIBRIUM AGAINST PULLING FORCE

摘要

PURPOSE: A system for predetermining the critical value of an inspecting device of radial deformation of a tire is provided to set the operation critical value for transmitting a signal in advance in case of deformation condition to be over the predetermined value owing to radial deformation of the tire in proportion to difference between the internal gas pressure and surrounding pressure of the tire. CONSTITUTION: A closing member(50) is balanced under force from pressure of a tire chamber(36), force of a spring(49) and force from pressure of a surrounding chamber(64) in a critical value predetermining system of a radial deformation inspecting device. The internal pressure value of the tire chamber is predetermined to be less than the predetermined critical value to upset the balance between the pressure and the force of the spring. The spring is formed of a Belleville washer. The system is protected by transmitting signals in detecting leak with the inner sealing members.