公开(公告)号：US4326420A

公开(公告)日：1982-04-27

申请号：US195821

申请日：1980-10-10

Applicant: Roscoe E. Perham

Inventor： Roscoe E. Perham

IPC: G01L1/02

CPC classification number: G01L1/02

Abstract: A material tester of minimal thickness is provided. A thin metal plate has in one surface an annular groove, and within the groove the plate thickness is reduced, to an amount less than the groove depth. A flexible diaphragm extends over the central part of the plate and over the groove, and is clamped to the plate by an annular ring overlying the groove. Passages extend in the plate from an edge to a chamber defined by the diaphragm and the central portion of the plate. A supporting structure including a handle is attached to the plate, and conduits extend between passages in the handle and the passages in the plate.

Abstract translation: 提供最小厚度的材料测试仪。 薄金属板在一个表面上具有环形凹槽，并且在凹槽内板的厚度减小到小于凹槽深度的量。 柔性膜片在板的中心部分上方延伸，并且在槽上方，并且通过覆盖在槽上的环形环被夹紧到板上。 通道在板上从边缘延伸到由隔膜和板的中心部分限定的室。 包括手柄的支撑结构附接到板上，并且导管在手柄中的通道和板中的通道之间延伸。