US 12,216,094 B2
Material testing systems including improved component cooling
Nicholas H. Bradshaw, Haverhill, MA (US)
Assigned to Illinois Tool Works Inc., Glenview, IL (US)
Filed by Illinois Tool Works Inc., Glenview, IL (US)
Filed on Jul. 29, 2022, as Appl. No. 17/877,407.
Claims priority of provisional application 63/228,914, filed on Aug. 3, 2021.
Prior Publication US 2023/0039676 A1, Feb. 9, 2023
Int. Cl. G01N 3/06 (2006.01)
CPC G01N 3/06 (2013.01) [G01N 2203/0017 (2013.01); G01N 2203/0019 (2013.01); G01N 2203/0021 (2013.01); G01N 2203/0023 (2013.01); G01N 2203/0025 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A material testing machine, comprising:
a first crosshead;
a first drive shaft configured to move the first crosshead when actuated;
a housing comprising an air inlet and an air outlet;
a drive motor within the housing and configured to actuate the first drive shaft;
a motor drive circuit configured to provide electrical power to the drive motor; and
a motor drive cooling system configured to cool the motor drive circuit, the motor drive cooling system comprising:
a cooling fan configured to generate an airflow from the air inlet of the housing to the air outlet of the housing, wherein a total surface area of the air outlet is greater than a total surface area of the air inlet such that an air pressure of the airflow decreases from the air inlet towards the air outlet;
a duct configured to direct a path of the airflow between the air inlet and the air outlet; and
a heat sink thermally coupled to the motor drive circuit and positioned within the airflow in the duct.