Abstract: A construction machine comprising a floor plate, an air conditioning unit mounted at the rear of an upper surface of the floor plate, an operator's seat mounted in a central portion of the upper surface of the floor plate, a cab installed on the floor plate from top and provided with a front window and a front air conditioning blowing opening at the front part, and a front duct for connecting between the air conditioning unit and the front air conditioning blowing opening and being divided into at least two detachably connected parts, one out of the divided front ducts being connected to the air conditioning unit, the other being connected to the front air conditioning blowing opening. The front duct for connecting between the air conditioning unit and the front air conditioning blowing opening is divided into at least two parts, and the divided front ducts are respectively connected to the air conditioning unit and the front air conditioning blowing opening, respectively, in advance.

Abstract: A lubricant composition for transmission of power consisting essentially of (A) base oil of which main component is a saturated hydrocarbon having condensed ring and/or non-condensed ring, (B) one kind or more than two kinds of zinc dithiophosphate and/or oxymolybdenum organophosphorodithioate sulfide, (C) alkenyl succinimide and (D) rust inhibitor.

Abstract: A lubricant composition for transmission of power consisting essentially of (A) base oil of which main component is a saturated hydrocarbon having condensed ring and/or non-condensed ring, (B) one kind or more than two kinds of zinc dithiophosphate and/or oxymolybdenum organophosphorodithioate sulfide, and (C) at least one kind of compound selected from the group consisting of phosphoric ester, phosphorous ester and their amine salts.

Abstract: An automatic clutch unit having a pneumatically operated servo-cylinder for operating a clutch and simultaneously incorporating one newly-developed proportional electro-pneumatic control valve, which supplies an air quantity corresponding to an intensity of electric current, to have the clutch shift in compliance with a delicate clutch displacement pattern according to each driving condition; perceiving that vacuum can easily be extracted from an intake manifold in case of a vehicle powered by a petrol engine and that a compressor for braking operation is always equipped in case of a vehicle powered by a large diesel engine.

Abstract: The embodiments of the control system for automatic transmissions for electric automobiles disclosed includes an electric motor drive control, a changeover device, a speed change control, a torque setting device, a transmitting force detector, and a motor output torque detector. The present control system enables the fluctuation of the transmission output shaft torque to be counteracted by the DC electric motor output torque for realizing extremely smooth transmission of motive power.