Abstract: A structure for mounting a flexible membrane weir to banks 2 and a crest 1 formed on a river bed between the above-mentioned banks and having a crest surface 1a of arc shape in cross-section. A trigonal-pyramid-shaped fillet 3 is provided at an intersecting portion between a crest surface on the upstream side of the top of the crest and the bank, and an upstream side edge of a toe of slope 5a of a flexible membrane 5 is fixed to this fillet 3.

Abstract: A collapsible sheet dam comprises a bag of flexible rubber sheet fixed onto a riverbed and riverbank portions of a river, and a fluid supply and discharge port formed in the bag. In such a dam, an end portion of the bag is fixed onto the riverbed and riverbank portions at upstream side and at the same time a portion of the bag located behind the fluid supply and discharge port is fixed onto the riverbank portion and a region ranging from the riverbank portion to the riverbed portion around the fluid supply and discharge port.

Abstract: A method of producing saturated vapor of solid metal organic compounds in the metal organic chemical vapor deposition method is disclosed, which is characterized in that, into a cylinder for metal organic chemical vapor deposition having a structure that an introducing port and a discharging port of carrier gas are provided respectively to the cylinder for metal organic chemical vapor deposition and a tube directly connected to either of these is inserted into the cylinder, a solid metal organic compound and a packing material are charged and a carrier gas fed from introducing port into cylinder is discharged from discharging port to outside of cylinder.

Abstract: A cylinder for metal organic chemical vapor deposition is disclosed, characterized in that, in the cylinder for metal organic chemical vapor deposition, wherein a throwing port for organometallic compound and an introducing port for inert gas are provided at the upper portion of cylinder, the inert gas being made to be charged into cylinder through a tube inserted into the cylinder and a distributor fitted at the lower end thereof, and an exhaust port for gas of organometallic compound and inert gas is provided at the upper portion of cylinder, the lower portion of the cylinder is made a narrow-diameter portion of reduced inside diameter compared with the upper portion of cylinder, the inside diameter of this narrow-diameter portion lying within a range from 1.1 times the diameter of distributor to 3/4 of the inside diameter of upper portion of cylinder and the length of this narrow-diameter portion being 1.

Abstract: Disclosed is an antilock braking device including a first braking hydraulic adjusting member actuated so as to restrain braking oil pressure of wheel cylinders individually corresponding to left and right front wheels in response to antilock braking oil pressure for front wheels; a second braking hydraulic adjusting member actuated so as to restrain braking oil pressure of wheel cylinders individually corresponding to left and right rear wheels in response to antilock braking oil pressure for rear wheels; an antilock control system having a reservoir and a pump for pressurizing control oil from said reservoir to generate said antilock control oil pressure; and a tandem type master cylinder having a pair of output ports independent of each other connected to said both braking hydraulic adjusting members to generate braking oil pressure of each of said wheel cylinders, characterized in that a proportional reducing valve is interposed between both braking hydraulic adjusting members in order to supply braking oi

Abstract: Disclosed is an improved device for controlling hydraulic pressure for braking a vehicle of the type including a pressure reducing valve disposed midway of an oil passage extending between an output port of a master cylinder and a rear wheel brake, said pressure reducing valve being adapted to proportionally reduce hydraulic pressure from the output port and then transmit reduced hydraulic pressure to the rear wheel brake. The improvement consists in that a pneumatic spring incorporated in a suspension system for determining hydraulic pressure at which the pressure reducing valve initiates pressure reducing function in dependence on the weight of cargoes loaded on the vehicle is operatively connected to a valve body of the pressure reducing valve in such a manner as to bias the valve body in the valve opening direction.

Abstract: In a brake oil pressure controlling valve device for vehicles of the type wherein a reducing valve adapted to proportionally reduce output oil pressure from a master cylinder to transmit it to a rear wheel brake and a pressure adjusting spring for urging the reducing valve in the valve opening direction and determining the reduction starting pressure thereof, are interposed in an oil path connecting between an output port of the master cylinder and the rear wheel brake, the disclosed valve device is further provided with: a pressure reducing piston which is normally held by virtue of resilient force of a set spring at its advanced limit position where the reducing valve is made open and which is retreated to close the reducing valve and to reduce oil pressure on the output side of the reducing valve when the resilient force of the set spring is released; a controlling oil pressure chamber supplied with oil pressure from an oil pressure source when a rear wheel is about to come into a locked state; and a contr

Abstract: A multi-cell gas-filled bag adapted for a dock fender, a connector for lighters and a float for supporting sand-flash pipe in reclaiming can be produced in a simple manner by uniting an inner sleeve made of an elastic rubber, and an outer sleeve made of an elastic rubber, each including a reinforcing material embedded therein, at a plurality of adhering circumferentially spaced longitudinal contact portions of the inner and outer sleeves, and introducing gas into non-adhering portions formed between adjacent adhering portions of the inner and outer sleeves to form cavities filled with the gas by the deformation of the inner sleeve.

Abstract: An abrasion resisting flexible joint pipe is disclosed which is adapted to flexibly holding together opposed end tubes made of rigid material and transferring mud or sand removed as by dredging and comprises a pair of opposed end tubes, an elastic rubber body flexibly holding together the opposed end tubes and defined by a cylindrical inner rubber surface and a spherical shell-shaped outer rubber surface, and a spherical shell-shaped reinforcing layer embedded in the elastic rubber body. The abrasion resisting flexible joint pipe satisfies the condition given byl < 0.68dwhere l is the distance between the opposed end tubes and d is the inner diameter of the end tubes. Two embodiments of the joint pipe are provided. The corresponding outer rubber surface and reinforcing layer in these two embodiments are also spherical shell in shape, but the following conditions are further satisfied in order to improve the abrasion and pressure resisting properties of the joint pipe, respectively.