US 11,933,687 B2
Device for detecting a rail load and method for mounting such device in a rail
Kim Pfluger, Winterthur (CH)
Assigned to KISTLER HOLDING AG, Winterthur (CH)
Appl. No. 17/425,445
Filed by KISTLER HOLDING AG, Winterthur (CH)
PCT Filed Jan. 20, 2020, PCT No. PCT/EP2020/051209
§ 371(c)(1), (2) Date Jul. 23, 2021,
PCT Pub. No. WO2020/156845, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 19153963 (EP), filed on Jan. 28, 2019.
Prior Publication US 2022/0097740 A1, Mar. 31, 2022
Int. Cl. G01L 5/00 (2006.01); B61K 9/08 (2006.01); B61L 1/06 (2006.01); G01L 1/16 (2006.01)
CPC G01L 5/0004 (2013.01) [B61K 9/08 (2013.01); B61L 1/06 (2013.01); G01L 1/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device that can be fitted into a bore of a rail on which travel rail vehicles with wheels exerting a load onto the rail; the device comprising: a sensor that generates a load signal under the action of the rail load, which load signal is a measure for the rail load; wherein the sensor comprises at least one piezoelectric sensor element that generates electric polarization charges as the load signal.