公开(公告)号：US4055080A

公开(公告)日：1977-10-25

申请号：US522599

申请日：1974-11-11

Applicant: Emory W. Farr ,  Robert D. Greene

Inventor： Emory W. Farr ,  Robert D. Greene

IPC: B25B23/14 ,  B25B23/145 ,  G01L3/14

CPC classification number: B25B23/14 ,  B25B23/1456 ,  G01L3/1471

Abstract: The present invention relates to an improved torquing apparatus that may be retrofitted in an in-line relationship, onto an existent power wrench as normally employed in mass production assembly processes. The disclosed apparatus is adapted to fit between the head of the wrench motor and the wrench attachment,so that the original torquing speed and power are transmitted to the work-piece in the same manner as originally intended. The disclosed torquing apparatus is designed to practically immune extraneous forces; so that the disclosed apparatus is particularly well adapted for wrenches employed in hand-held applications.

Abstract translation: 本发明涉及一种改进的扭力装置，其可以按照在线关系改装到现有的动力扳手上，如通常在大规模生产装配过程中所采用的那样。 所公开的装置适于装配在扳手马达的头部和扳手附件之间，使得原始扭矩速度和功率以与原始预期相同的方式传递到工件。 所公开的扭矩装置设计成实际上免疫外力; 使得所公开的装置特别适用于在手持式应用中使用的扳手。

公开(公告)号：US5220971A

公开(公告)日：1993-06-22

申请号：US764618

申请日：1991-09-24

Applicant: Emory W. Farr

Inventor： Emory W. Farr

IPC: G01G3/14 ,  G01L1/22

CPC classification number: G01L1/2243 ,  G01G3/1412 ,  G01L1/2262

Abstract: A shear beam, single-point load cell is provided. The load cell includes a shear beam with a pair of shear strain gauge sensors mounted on opposing sides thereof for measuring strain within a small portion of the shear beam. The strain gauges are isolated within sealed pockets from moisture or harsh chemicals. The use of a shear beam, rather than a bending cantilevered beam of conventional load cells, allows the load cell to be sturdier and more robust than conventional load cells, to thereby measure and detect greater amounts of load. The provision of the strain gauges positioned for measuring strain within a small portion of the shear beam allows the load cell to accurately and precisely measure loads regardless of the mounting position of the load on the load cell. Further, the provision of closely adjacent strain gauges renders the load cells relatively immune to thermal gradients inherent in conventional load cells having widely separated strain gauges. The load cell is relatively inexpensive to manufacture and maintain, and yet provides accurate and precise load measurements.

Abstract translation: 提供了一个剪切梁，单点称重传感器。 测力传感器包括具有安装在其相对侧上的一对剪切应变计传感器的剪切梁，用于测量剪切梁的一小部分内的应变。 应变计在密封的袋子内与潮湿或刺激性化学物质隔离。 使用剪切梁，而不是常规称重传感器的弯曲悬臂梁，允许称重传感器比传统称重传感器更坚固和更坚固，从而测量和检测更大量的载荷。 设置用于在剪切梁的一小部分内测量应变的应变仪允许负载传感器精确而精确地测量负载，而不管负载在负载单元上的安装位置如何。 此外，提供紧密相邻的应变计使得负载传感器相对地免于具有广泛分离的应变计的常规测力传感器中固有的热梯度。 测力传感器制造和维护相对便宜，并且提供精确和精确的负载测量。

公开(公告)号：US4148219A

公开(公告)日：1979-04-10

申请号：US820449

申请日：1977-08-01

Applicant: Frank E. Golding ,  Emory W. Farr

Inventor： Frank E. Golding ,  Emory W. Farr

IPC: G01L1/22

CPC classification number: G01L1/2218

Abstract: A column type bonded strain gage load cell having improved linearity and output is achieved using a column having a pair of opposed transverse bores which create a web therebetween. The web has a relatively high strain as compared to the circumferential strain of an unbored column. Strain gages bonded to the web, in combination with strain gages bonded at selected regions on the column provide improved linearity and increased output.

Abstract translation: 使用具有一对相对的横向孔的柱来实现具有改善的线性和输出的柱型粘合应变计称重传感器，其在它们之间产生网。 与无孔柱的周向应变相比，幅材具有相对较高的应变。 结合到幅材上的应变片与在柱上选定区域键合的应变片组合提供了改善的线性和增加的输出。