Between the outer circumferential surface of a housing (2) and outer circumferential surface of a stud portion (6) of a ball stud (3), an elastic dust cover (7) is attached in a manner blocking an opening portion (22) of the housing (2). In the dust cover ...

An object of the invention is to provide a rotary damper which can individually control two controlled subjects independently rotatable with each other by utilizing both a viscous resistance by a viscous material and a resistance by a viscous fluid and put...

It is an object of the present invention to provide a rotary damper capable of automatically adjusting an exhibited braking force in correspondence with variation in load. A fluid chamber 2 into which viscous fluid is charged is formed in a casing 1. A van...

While one end of a material (31) that has nearly the same diameter as that of a first connecting portion (15) is secured, pressure is applied to the portion between the middle and the other end of the material (31). A slender portion (32), which has nearly...

Nearly the entire cylindrical wall of a cylindrical workpiece (41) is positioned and supported. A through hole (31) is formed by lowering a press jig (45) that comprises a prismatic penetration processing portion (48) and flange portions (49) respectively ...