Patent ID: 6357280
Filing Date: 2002-03-19
Classification: G01M

Abstract:
A leakage testing tool for checking a bellow of a semiconductor manufacturing machine wherein the leakage testing tool is connected to a function toward checking hermetic quality of a tested bellows, the leakage testing tool comprising:a base; a first support rack and a second support rack opposite the first rack, both first and second support racks formed on the base and each of the first and second support racks having an annular recess which can engage with a bellow defining a central bore; two opposite support ears also formed on the base respectively outside of the first and the second support rack, and each of the support ears defining a threaded hole; two adjustment screws respectively threaded in said threaded holes; a first and a second movable plate, each of the first and second movable plates having a flat end face urging against a respective one of two end flanges of the bellow, and each of the first and second movable plates being able to engage with an adjustment screw; and a tube formed on a side wall of the first movable plate, one end thereof hermetically connected to a leakage detector and another end thereof in communication with a hole defined in the first movable plate which is in communication with the central bore of the bellow, whereby when the combined bellow and leakage testing tool are disposed in an airtight chamber which is then charged with a gas, a hermetic quality of the bellow is determinable by use of the leakage detector.