Patent ID: 9417142
Filing Date: 2016-08-16
CPC Classification: G01L,G01N

Claim Text:
1. An axial force sensor, comprising: a pair of pressing plates; a strain gauge arranged in parallel with, and sandwhiched between, the pair of pressing plates, the strain gauge having a plurality of strain-sensitive elements including resistors, and a transmitting and blocking mechanism that transmits a pressing force from the pair of pressing plates to at least one of the plurality of strain-sensitive elements and blocks the pressing force from the rest of the strain-sensitive elements, wherein the transmitting and blocking mechanism is a plate-like spacer arranged between the pair of pressing plates together with the strain gauge, the plate-like spacer having at least one open, force-blocking portion and at least one closed, force-transmitting portion; and wherein one or more strain-sensitive elements of the strain gauge are respectively aligned with the at least one open, force-blocking portion and the at least one closed, force-transmitting portion.