Thk Co., Ltd.

Masahiro Yoshihashi

Hidekazu Michioka

Hiroaki Mochizuki

Katsuya Iida

Tadashi Hirokawa

Masashi Konomoto

Yoshihito Watanabe

A linear motion guiding apparatus comprises a guide rail provided with a ball running groove, and a movable block movably arranged along the guide rail through balls. The movable block is provided with a ball running counter-groove, a ball returning passage arranged away from the ball running counter-groove and direction changing passages for connecting these members. A resin-formed body for forming a ball circulation passage comprises a pair of ball passage forming portions, a returning passage forming portion and a pair of direction changing passage-inner guide forming portions. The resin-formed body is separately formed from a body of the movable block. At least two portions of (a) the ball passage forming portions, (b) the returning passage forming portion, (c) one of the direction changing passage-inner guide forming portions and (d) another of the of direction changing passage-inner guide forming portions are connected with each other through integral forming so that the resin-formed body can be built in the body of the movable block.

Linear motion guiding apparatus

A damping device receiving viscous fluid in an annular gap between a housing and a rotary member within the housing and converting a dynamic energy of the rotary member into a thermal energy is provided. The damping device is constructed to make it possible to move a sealing unit for sealing the annular gap in response to a pressure of the viscous fluid, to change the volume of the annular gap to suppress an adverse affect concomitant with the pressure increase of the viscous fluid to the sealing unit and to enhance reliability and durability of the damping device.

Damping device

Growing community of inventors

Tokyo-to, Japan

Masahiro Yoshihashi