公开(公告)号：US07024938B2

公开(公告)日：2006-04-11

申请号：US11003090

申请日：2004-12-03

Applicant: Stuart M. Gleman ,  Geoffrey Keith Rowe

Inventor： Stuart M. Gleman ,  Geoffrey Keith Rowe

IPC: F16B31/02

CPC classification number: G01L5/24 ,  F16B31/02

Abstract: An apparatus and method for measuring the tension in bolts, screws, rivets, and other fasteners, is disclosed wherein the deformation of the fastener head is measured (or the end of fastener in such cases as there is not a distinct formed head, for example stud bolts). The deformation generally is an analytic function of the tension in the fastener. The deformation is a continuous two-dimensional distribution over the surface of the fastener head, which allows redundant measurement and therefore more reliable measurement of fastener total axial tension, and also allows in some instances an evaluation of the bending stresses in the fastener from the distortion of the deformation pattern on the head. An advantage of the invention is that the length of the fastener or its temperature need not be known. The measurements can be determined by optical, capacitance, optical imaging, air gauging and piezoresistive techniques.

Abstract translation: 公开了一种用于测量螺栓，螺钉，铆钉和其它紧固件中的张力的装置和方法，其中测量紧固件头部的变形（或者在这种情况下紧固件的端部，例如没有不同的成形头部，例如 双头螺栓）。 变形通常是紧固件中的张力的分析功能。 变形是在紧固件头部的表面上连续的二维分布，其允许冗余测量并因此更紧密地测量紧固件的总轴向张力，并且还允许在一些情况下评估紧固件中的弯曲应力从失真 的头部变形模式。 本发明的一个优点是不需要知道紧固件的长度或其温度。 测量可以通过光学，电容，光学成像，空气测量和压阻技术来确定。

公开(公告)号：US08833181B1

公开(公告)日：2014-09-16

申请号：US14019185

申请日：2013-09-05

Applicant: Geoffrey Keith Rowe

Inventor： Geoffrey Keith Rowe

IPC: G01L1/02 ,  G01L1/04

CPC classification number: G01L1/02 ,  G01G5/04 ,  G01L1/04 ,  G01L5/243

Abstract: A reversible force measuring device that can comprise at least one cavity, at least one load receiving area, and at least one indicating material; wherein the indicating material moves in or out of the at least one cavity as its volume changes to indicate the magnitude and/or direction of the applied loads. A reversible force measuring device that can comprise at least one cavity, at least one load receiving area, and at least one indicating material; a fastener causes the indicating material to move in and out of the at least one cavity to indicate the magnitude and/or direction of the applied loads. A reversible force measuring device comprising at least two independent cavities, at least one load receiving area, and at least one indicating material; wherein the difference in volume changes indicates the force as the indicating material moves in or out of the at least two cavities.

Abstract translation: 一种可逆力测量装置，其可包括至少一个空腔，至少一个负载接收区域和至少一个指示材料; 其中当所述指示材料的体积改变以指示施加的载荷的大小和/或方向时，所述指示材料进入或移出所述至少一个空腔。 一种可逆力测量装置，其可包括至少一个空腔，至少一个负载接收区域和至少一个指示材料; 紧固件使得指示材料进入和移出至少一个空腔以指示施加的负载的大小和/或方向。 一种可逆力测量装置，包括至少两个独立的空腔，至少一个负载接收区域和至少一个指示材料; 其中体积变化的差异指示当所述指示材料移入或移出所述至少两个空腔时的力。

公开(公告)号：US06829944B1

公开(公告)日：2004-12-14

申请号：US10266894

申请日：2002-10-08

Applicant: Stuart M. Gleman ,  Geoffrey Keith Rowe

Inventor： Stuart M. Gleman ,  Geoffrey Keith Rowe

IPC: F16B3102

CPC classification number: G01L5/24

Abstract: An apparatus and method for measuring the tension in bolts, screws, rivets, and other fasteners, is disclosed wherein the deformation of the fastener head is measured, (or the end of fastener in such cases as there is not a distinct formed head, for example stud bolts). The deformation generally is an analytic function of the tension in the fastener. The deformation is a continuous two-dimensional distribution over the surface of the fastener head, which allows redundant measurement and therefore more reliable measurement of fastener total axial tension, and also allows in some instances an evaluation of the bending stresses in the fastener from the distortion of the deformation pattern on the head. An advantage of the invention is that the length of the fastener or its temperature need not be known. The measurements can be determined by optical, capacitance, optical imaging, air gauging and piezoresistive techniques.

Abstract translation: 公开了一种用于测量螺栓，螺钉，铆钉和其他紧固件中的张力的装置和方法，其中测量紧固件头部的变形（或者在这种情况下紧固件的端部没有不同的成形头部），用于 示例双头螺栓）。 变形通常是紧固件中的张力的分析功能。 变形是在紧固件头部的表面上连续的二维分布，其允许冗余测量并因此更紧密地测量紧固件的总轴向张力，并且还允许在一些情况下评估紧固件中的弯曲应力从失真 的头部变形模式。 本发明的一个优点是不需要知道紧固件的长度或其温度。 测量可以通过光学，电容，光学成像，空气测量和压阻技术来确定。