公开(公告)号：US4938068A

公开(公告)日：1990-07-03

申请号：US250179

申请日：1988-09-28

Applicant: David J. Clements

Inventor： David J. Clements

IPC: G01L9/00

CPC classification number: G01L9/0013 ,  Y10S73/01

Abstract: A pressure transducer 10 is disclosed wherein a bellows 11 is expanded by an external pressure applied at pressure port 16. The force created by external pressure applied to bellows 11 is mechanically transferred to one end of a vibrating elastic member 14 by axial displacement of saddle 13. A change in external pressure is thereby read as a change in resonant frequency of elastic member 14.

Abstract translation: 公开了一种压力传感器10，其中波纹管11通过在压力端口16施加的外部压力而膨胀。由施加到波纹管11的外部压力产生的力通过鞍座13的轴向位移机械地传递到振动弹性构件14的一端 因此，外部压力的变化被读取为弹性部件14的共振频率的变化。

公开(公告)号：US4914962A

公开(公告)日：1990-04-10

申请号：US250157

申请日：1988-09-28

Applicant: David J. Clements

Inventor： David J. Clements

IPC: G01F23/00 ,  G01F23/296 ,  G01L1/10 ,  G01L9/00 ,  G01N9/00 ,  G01N11/16

CPC classification number: G01L1/10 ,  G01F23/0023 ,  G01F23/2966 ,  G01L9/0013 ,  G01N9/002 ,  G01N11/16

Abstract: A vibrating strip transducer, wherein a vibrating strip 54 mounted between a fixed mount 52 and a moveable mount 51 and under load 53 directly responds to a change in force applied to the strip with a change in the magnitude of stress in the strip. The change in stress produces a corresponding change in the resonant frequency of vibrating strip 54 which is detected by coil assembly 55 to output a frequency based signal directly related to the force applied. Fluid level and buoyancy sensing embodiments are also disclosed.

Abstract translation: 一种振动带式换能器，其中安装在固定支架52和可移动支架51之间以及负载53之下的振动条54直接响应于条带中的应力大小变化而施加到条带上的力的变化。 应力的变化产生由线圈组件55检测的振动条54的谐振频率的相应变化，以输出与施加的力直接相关的基于频率的信号。 还公开了液位和浮力感测实施例。

公开(公告)号：US4167876A

公开(公告)日：1979-09-18

申请号：US868285

申请日：1978-01-05

Applicant: David J. Clements

Inventor： David J. Clements

IPC: G01C5/04

CPC classification number: G01C5/04

Abstract: Method for the determination of settlement in foundation structures for buildings such as dams using a long length of tubing installed within the foundation structure in which mercury and water with a defined interface is forced along the tube from one end against a constant back pressure applied at the other end, the quantity of mercury displaced along the tube being measured together with the pressure applied to compute the position of the interface in the tube and the height thereof above a datum point. A construction of unit to provide the constant back pressure is also disclosed in the specification.

Abstract translation: 用于确定建筑物的基础结构中的沉降的方法，所述建筑物例如使用安装在基础结构中的长管道的管道，其中具有界定界面的水银和水从一端被迫沿着管从一端施加恒定的背压 另一方面，沿着被测量的管被移动的汞的量与施加的压力一起计算管中的界面的位置以及高于基准点的高度。 本说明书还公开了提供恒定背压的单元结构。