US 12,422,327 B2
Dynamic balance testing device
Satoshi Ishitoya, Kanagawa (JP)
Assigned to KOKUSAI KEISOKUKI KABUSHIKI KAISHA, Tokyo (JP)
Filed by KOKUSAI KEISOKUKI KABUSHIKI KAISHA, Tama (JP)
Filed on Dec. 6, 2022, as Appl. No. 18/075,520.
Application 18/075,520 is a continuation of application No. 17/060,220, filed on Oct. 1, 2020, granted, now 11,549,857.
Application 17/060,220 is a continuation of application No. 16/243,502, filed on Jan. 9, 2019, granted, now 10,837,856, issued on Nov. 17, 2020.
Application 16/243,502 is a continuation in part of application No. PCT/JP2016/073523, filed on Aug. 10, 2016.
Prior Publication US 2023/0107238 A1, Apr. 6, 2023
Int. Cl. G01M 1/22 (2006.01); G01M 1/16 (2006.01)
CPC G01M 1/22 (2013.01) [G01M 1/16 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A dynamic balance testing device, comprising:
a drive unit configured to rotationally drive a rotatably supported rotating body by blowing air onto the rotating body;
a shifting unit configured to shift the drive unit in a direction of a rotation axis of the rotating body between a predetermined driving position at which the drive unit can rotationally drive the rotating body and a predetermined standby position at which attachment and detachment of the rotating body is facilitated; and
a changing unit configured to change the driving position in the direction of the rotation axis, wherein
the drive unit has one or more nozzles configured to blow air toward the rotating body,
the drive unit has a hollow part penetrating in the direction of the rotation axis and surrounding an outer periphery of the rotating body, and
the one or more nozzles are formed to an inner periphery of the hollow part.