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US 6,385,917 B1Granted
Base isolation device with damping mechanism
AssigneeThk Co., Ltd.
InventorMasashi Konomoto
Life of this patent
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AssigneeThk Co., Ltd.
InventorMasashi Konomoto
Estimating the term…
A base isolation device used for the purpose of absorbing a quake of the ground by, for example, an earthquake to thereby reduce the quake of a building, or used for the purpose of reducing a quake applied to a precision machinery and tool in transportation etc. of the precision machinery and tool. The base isolation device comprises 1st and 2nd track rails disposed orthogonally to each other, a 1st slide member freely linearly movable along the 1st track rail, a 2nd slide member connected to the 1st slide member and freely linearly movable along the 2nd track rail, a ball screw for converting a linear motion of the 2nd slide member into a rotary motion, a rotary sleeve to which a rotation is given by the ball screw, a stationary sleeve forming an action chamber of damping force between it and an outer periphery face of the rotary sleeve, and a viscous fluid sealed in the action chamber.
A base isolation device with damping mechanism, which is disposed between a basement and a structure body arranged on the basement and suppresses a transmission of a quake from the basement to the structure body, characterized by comprising:
A base isolation device with damping mechanism which is disposed between a basement and a structure body arranged on the basement and suppresses a transmission of a quake from the basement to the structure body, comprising:
A base isolation device with damping mechanism which is disposed between a basement and a structure body arranged on the basement and suppresses a transmission of a quake from the basement to the structure body, comprising:
Dependencies are inferred from the claim text.