Patent ID: 11952994
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 11:
12. The pump according to claim 1, further comprising:
a reinforcing plate provided on the power-feeding plate on a side farther from the vibrating plate,
wherein the power-feeding plate includes a holding portion holding both the first metal conductor and the second metal conductor
wherein a difference d1 between a coefficient of linear expansion αr of the reinforcing plate and a coefficient of linear expansion αh of the holding portion is in a range of 20% to 500% of a difference d2 between a coefficient of linear expansion αv of the vibrating plate and the coefficient of linear expansion αh of the holding portion, such that d1 is in a range of 0.20*d2 to 5*d2.