US 12,467,815 B2
Pressure and temperature sensor
Tadayoshi Matsushita, Osaka (JP); Kentaro Yamamoto, Osaka (JP); Kazuhiro Takahashi, Tokyo (JP); Keizo Oishi, Tokyo (JP); and Hiroshi Kokita, Osaka (JP)
Assigned to EAGLE INDUSTRY CO., LTD., Tokyo (JP); and VALCOM CO., LTD., Osaka (JP)
Appl. No. 18/032,517
Filed by EAGLE INDUSTRY CO., LTD., Tokyo (JP); and VALCOM CO., LTD., Osaka (JP)
PCT Filed Oct. 8, 2021, PCT No. PCT/JP2021/037442
§ 371(c)(1), (2) Date Apr. 20, 2023,
PCT Pub. No. WO2022/085497, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. 2020-175802 (JP), filed on Oct. 20, 2020.
Prior Publication US 2023/0384177 A1, Nov. 30, 2023
Int. Cl. G01L 19/04 (2006.01); G01K 7/16 (2006.01); G01K 13/02 (2021.01); G01L 9/00 (2006.01); G01L 19/00 (2006.01); G01L 19/06 (2006.01)
CPC G01L 19/0092 (2013.01) [G01K 7/16 (2013.01); G01K 13/02 (2013.01); G01L 9/0001 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A pressure and temperature sensor comprising:
a sensor body;
a diaphragm defining an accommodation space together with the sensor body;
a transmission substance charged in the accommodation space;
a pressure measurement body disposed in the accommodation space;
a temperature measurement body disposed in the accommodation space;
a buffering member having a base portion which is disposed between the diaphragm and the pressure measurement body and between the diaphragm and the temperature measurement body in the accommodation space and which is configured to buffer the transmission substance; and
a through flow passage which has an opening portion opened toward the base portion of the buffering member, and which is configured to the accommodation space through the opening portion and to be closed after the transmission substance is charged in the accommodation space through the through flow passage,
wherein an axial dimension between the buffering member in the accommodation space and the opening portion of the through flow passage is shorter than a thickness of the base portion of the buffering member.