Abstract: An air dehumidifying treatment device for air compressor includes a case having a board set received therein and the board set is in contact with an inner periphery of the case so as to define four compartments wherein air is introduced in the first compartment and then goes through the second and the fourth compartment via holes defined in the board set and then goes out from the fourth compartment. The holes are located at different heights and drain-pipes are in communication with the first and the third compartments so as to lower the humidity in the air.

Abstract: An air barrel of an air compressor comprises a barrier body; and a plurality of rising air chambers and a plurality of descending air chambers located within the barrier body; wherein the plurality of rising air chambers and the plurality of descending air chambers are connected alternatively; an air inlet installed at a first descending air chamber; an air outlet installed at a last rising air chamber. Air flows from an air compressor to the air inlet so as to flow through the plurality of descending air chambers and the plurality of rising air chambers to flow out from the air outlet. Thus water vapor in the air will condense at a bottom of the barrier body. A bottom of the barrier body has at least one water draining valve for draining condensed water. The temperature of air is decreased as flowing from the air inlet to the outlet.

Abstract: An elastic bed which comprises an elastic bed body having a framework; and a plurality of support springs; wherein each support spring is formed by a steel strip which is firstly circularly arranged along an orientation to a bottom of the framework and then circularly arranged along an opposite orientation to an upper side of the framework; then the process is repeated to a predetermined length; and plurality of positioning elements for positioning the support springs to the framework. The framework is formed by an upper frame and a lower frame; and a plurality of enhancing supports are connected between the upper frame and the lower frame. Each support spring is spaced to another spring with a length greater than a predetermined one so that no support spring is overlapped to another one. A plurality of positioning elements serves for positioning the support springs to the framework.

Abstract: A bearing or sleeve installing device includes a bar and a first bolt and two second bolts threadedly extend through the bar. A carrying member with a bearing or a sleeve mounted thereto. The carrying member has a threaded hole and the first bolt extends through a hole in an object and is threadedly connected to the threaded hole in the carrying member. The bar contacts the object, the carrying member moves into the hole in the object when rotating the first bolt so as to install the bearing or sleeve in the hole of the object.