专利检索 ap:("Toshitaka Yamada" OR "Tiaki Mizuno" OR "Masahito Imai" OR "Haruyuki Ikeo" OR "Hirohito Sioya" OR "Masahito Muto" OR "Motomi Iyoda") AND inv:"Hirohito Sioya" 第 1 页

1.

发明授权
Acceleration sensor 失效

公开(公告)号：US4967597A

公开(公告)日：1990-11-06

申请号：US336381

申请日：1989-04-11

申请人： Toshitaka Yamada , Tiaki Mizuno , Masahito Imai , Haruyuki Ikeo , Hirohito Sioya , Masahito Muto , Motomi Iyoda

发明人： Toshitaka Yamada , Tiaki Mizuno , Masahito Imai , Haruyuki Ikeo , Hirohito Sioya , Masahito Muto , Motomi Iyoda

IPC分类号： G01P1/00

CPC分类号： G01P1/003

摘要： When an acceleration sensor is used, it is attached to a measured object to detect an acceleration applied to the object. The acceleration sensor includes a package having at least one chamber. A sensor element is disposed in the chamber and has a portion which vibrates in response to the acceleration. Damping liquid is sealed within the package and has a quantity which allows the sensor element to be submerged in the damping liquid and which allows a predetermined quantity of gas to remain in the package. The gas absorbs a thermally-induced volume change of the damping liquid. In the absence of the acceleration, a gas bubble is prevented from separating from the gas. In addition, the gas bubble is prevented from staying in the chamber.