Patent ID: 8629675

Claim:
A linear sensor, comprising: a sleeve; a plastic pin which contains a permanent magnet fixed in non-movable relationship to the pin, where the pin is supported in the sleeve so it can be linearly displaced against the force of a single spring, the spring arranged concentrically with the pin, and the pin including an end protruding beyond the sleeve configured to abut a contactable measurement object, wherein the spring is configured to bias the in to protrude beyond the sleeve to abut the contactable measurement object; and a magnetic field sensor which is attached to the sleeve for detecting a displacement of the permanent magnet, wherein the pin is guided by a first cylindrical guide and a second cylindrical guide; wherein the first guide of the pin is formed by a contiguously formed constriction of the sleeve on which the pin comes in contact with the sleeve, and that the second guide is formed by a contiguously formed thickening of the pin which comes in contact with the sleeve; wherein the thickening has a sleeve-like extension into which the spring protrudes.