Abstract: A fluid pressure transmitting diaphragm assembly is disclosed in which a diaphragm support plate (14) and a force transmitting disk (16) are attached respectively to the outer flange (46) and inner flange (48) of an annular diaphragm (44) having a concave portion (50) between the flanges, the concave portion having been formed by fluid pressure acting on the diaphragm to freely deform it following hermetic welding of the flanges. A method of manufacturing such an assembly also is disclosed.

Abstract: A strain gage transducer wherein a plurality of strain gages are mounted on surface portions of a beam. The beam finds a plurality of thermal conductivity paths for conducting heat from the strain gages. The physical configuration defined by the beam for the first thermal conductivity path differs from that defined by the beam for the second thermal conductivity path, while yet the paths are arranged to be substantially identical in effective thermal conductivity so that dissipation of heat from the strain gages is substantially similar. In the illustrated embodiment, such differential beam configuration is provided by inclusion in the beam of one or more cavities. In one form, at least one cavity extends fully through the beam, and in another form, at least one cavity defines a recess extending only partially through the beam. In the illustrated embodiment, the cavity structure may be used to control the heat sink characteristics of the different portions of the beam.

Abstract: An improved deformable flexure element (10) for use in strain gage tranducers and a process for making the element are disclosed. By appropriate selection of materials and gage geometries in accordance with the invention, the zero and span temperature coefficients of the transducer are reduced substantially to zero. Improved processes for producing such flexure elements are disclosed.