Patent ID: 9551560
Date: 2017-01-24
CPC Classifications: F16H,G01B,G01N

Claim:
1. An extensometer including: a first arm assembly and a second arm assembly, each arm assembly including first and second reciprocating contact arms; the first and second arm assemblies each including a camming element, a first lever arm with a first proximal end engaged within the camming element and a first distal end engaged with the first contact arm and a second lever arm with a second proximal end engaged within the camming element and a second distal end engaged with the second contact arm, wherein when the camming element is in a first position, the first and second contact arms are urged toward each other and wherein when the camming element is in a second position, the first and second contact arms are urged away from other; and a drive mechanism which urges the camming element from the first position to the second position, the drive mechanism being separated from the camming element.