US 11,944,426 B2
Axial load cell
Jonathan L. Pearlman, Pittsburgh, PA (US); Jonathan A. Duvall, Pittsburgh, PA (US); and Samuel T. Bucior, Greenboro, NC (US)
Assigned to University of Pittsburgh-Of the Commonwealth System of Higher Education, Pittsburgh, PA (US); and The United States Government as Represented by the Department of Veterans Affairs, Washington, DC (US)
Appl. No. 16/959,589
Filed by UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US); and THE UNITED STATES GOVERNMENT AS REPRESENTED BY THE DEPARTMENT OF VETERANS AFFAIRS, Washington, DC (US)
PCT Filed Jan. 11, 2019, PCT No. PCT/US2019/013129
§ 371(c)(1), (2) Date Jul. 1, 2020,
PCT Pub. No. WO2019/140148, PCT Pub. Date Jul. 18, 2019.
Claims priority of provisional application 62/616,619, filed on Jan. 12, 2018.
Prior Publication US 2021/0128019 A1, May 6, 2021
Int. Cl. A61B 5/103 (2006.01); A61B 5/00 (2006.01); G01G 3/14 (2006.01); G01G 19/44 (2006.01); G01L 1/22 (2006.01)
CPC A61B 5/1036 (2013.01) [A61B 5/6891 (2013.01); A61B 5/6894 (2013.01); G01G 3/14 (2013.01); G01G 19/44 (2013.01); G01L 1/2231 (2013.01); A61B 2562/0252 (2013.01); A61B 2562/0261 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A load cell apparatus, comprising:
a base member;
a cap member;
a number of first members provided between the base member and the cap member and forming at least a portion of a support wall of the load cell apparatus, wherein each of the number of first members is made of a material having a substantially linear stress-strain curve; and
a plurality of strain gauges directly coupled to the number of first members, the plurality of strain gauges being positioned to measure an axial load applied to the load cell in a direction extending from the cap member to the base member.