Abstract: An instrument for torque controlled tightening of a threaded device, including a handle, an articulable head that is articulably connected to the handle, the articulable head including a drive ratchet configured to rotate relative to the articulable head and to engage with the threaded device or a tool for engaging with the threaded device, an elastic device arranged at the handle, and a pulling mechanism operatively connecting the articulable head with the handle, the pulling mechanism having a ratchet head mechanism to engage with the drive ratchet of the articulable head, and configured to engage with the elastic device at the handle such that the elastic device is compressed or expanded upon an application of a torque to the drive ratchet and simultaneously the ratchet head mechanism blocks the rotation of the drive ratchet.

Abstract: One fusion machine can butt or socket fuse polyolefin pipes and fittings in straight alignment or at inwardly or outwardly mitered universal angles from 0° to 45° for butt fusion and from 0° to 10° for socket fusion. The machine is manually driven, hydraulically monitored and operated in all configurations from one side of the machine.

Abstract: Suction device includes swirl flow-forming body that forms a swirl flow to apply suction to material by use of Bernoulli's principle, and case that houses swirl flow-forming body, and guides flow of a fluid flowing out of concave part of swirl flow-forming body. Case includes guide part, flange part, and cover part. Guide part controls flow of a fluid flowing out of concave part of swirl flow-forming body and flowing along end face, such that the fluid flows in a direction away from a position of material. Flange part forms, between flange part and end face, a flow path for a fluid to flow out of concave part. Cover part is fixed on the top surface of main body of swirl flow-forming body.