Abstract: A seat of a vehicle includes a foam pad in which a first hook part is installed and configured to slide on a rear surface opposite to a seating surface; a covering in which a wire is provided at an end portion and surrounds the seating surface of the foam pad to be caught and fixed to the first hook part of the rear surface of the foam pad; and a plate coupled to the rear surface of the foam pad and configured to slide the first hook part according to movement, wherein, when the covering and the foam pad are coupled, the hook part slides, and the wire is pulled by the first hook part so that the covering is fixed in a state of surrounding the foam pad.

Abstract: An improved apparatus for automatically measuring the viscosity of a sample liquid is disclosed. The apparatus comprises a plurality of viscosimeter tubes mounted in a constant temperature bath, a plurality of vessels adapted for containing the sample liquid, a valve system for controlling the injection and the removal of the sample liquid into and from the viscosimeter tubes and the ascent and descent of the sample liquid in the viscosimeter tubes, a driving circuitry for the valve system, a photosensing device for sensing the meniscus of the liquid at predetermined indication marks of the viscosimeter tubes and a system of measuring the flow time of the sample liquid between two predetermined marks and computing the viscosity of the liquid based on the measured flow time.