Patent ID: 6732571
Filing Date: 2004-05-11
Classification: G01M

Abstract:
A frame structure for a leak detector, said frame structure comprising:an upper frame and a lower frame onto each of which a film is stretched thereupon, each of the upper frame and the lower frame further comprising an outer subframe and an inner subframe each made from a synthetic material between which said films are fastened wherein each outer subframe of said upper and lower frames, respectively, includes a recess having disposed therein a corresponding inner subframe thereby defining a test chamber between said upper and lower frames for an incoming test gas sample entering said defined test chamber and in which said films are at least one of adhered and screw-fastened with the frame portions onto which they are respectively stretched and in which each recess is disposed in a region of a corresponding outer subframe facing away from the test chamber and wherein one of said inner subframes is equipped with a lip seal, said lower frame being positioned onto a margin of a plate-form bottom, said upper frame including a support provided with a steel profile, said steel profile being angled and at least partially encompassing said upper frame from above and from the outside thereof, said upper frame being fastened on said steel profile so as to float axially relative to said lower frame wherein the steel profile also partially encompasses said lower frame when the defined test chamber is closed, said upper and lower frames each being circularly formed and comprised of polyamide, said upper and lower frames being connected at one end across an articulation.