US 11,747,253 B2
Measuring drive having ultrasound-mounted shaft, measuring device, method and use
Michael Krenn, Zettling (AT); and Denis Schütz, Graz (AT)
Assigned to Anton Paar GmbH, Graz (AT)
Appl. No. 17/309,519
Filed by Anton Paar GmbH, Graz (AT)
PCT Filed Dec. 4, 2019, PCT No. PCT/EP2019/083714
§ 371(c)(1), (2) Date Jun. 3, 2021,
PCT Pub. No. WO2020/126510, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. A 51153/2018 (AT), filed on Dec. 21, 2018.
Prior Publication US 2022/0011210 A1, Jan. 13, 2022
Int. Cl. G01N 11/14 (2006.01); G01N 11/00 (2006.01); F16C 32/06 (2006.01)
CPC G01N 11/14 (2013.01) [F16C 32/0611 (2013.01); G01N 2011/0006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A measuring drive for a rheometer, the measuring drive comprising:
a motor;
a shaft which is coupled to the motor in such a way that the shaft is drivable by the motor, the shaft having a shaft element; and
an ultrasonic device, which is configured to provide ultrasound to the shaft in such a way that at least a part of the shaft is bearable substantially without contact by the ultrasound,
wherein the ultrasonic device is configured to bear the shaft element substantially without contact both in an axial direction and in a radial direction of the shaft.