Process and apparatus for enhancing the erosive intensity of a high velocity liquid jet when the jet is impacted against a surface for cutting, cleaning, drilling or otherwise acting on the surtace. A preferred method comprises the steps of forming a high velocity liquid jet, oscillating the velocity of the jet at a preferred Strouhal number, and impinging the pulsed jet against a solid surface to...

A photopolymerizable composition composed of a polymerizable monomer and an initiator capable of polymerizing said monomer upon exposure to visible light, characterized in that said initiator consists essentially of (a) at least one kind of photosensitizer selected from an alpha -diketone, quinone, and derivatives thereof, and (b) at least one kind of accelerator selected from an aldehyde contain...

There is described a photopolymerizable composition which contains at least one olefinically unsaturated compound and a photosensitive catalyst containing a diketone plus 4-(N,N-dimethylamino)benzoic acid or lower alkyl ester thereof.

This invention relates to a method of and devices for impact and vibration damping and, more particularly, to devices composed of an elastoplastic material including the characteristics of damping, heat and pressure dimensional stability, and moisture non absorbency of a blend of polyolefin and conjugated diene butyl rubber which converts impact shock or vibration energy into thermal energy.

This invention relates to a method of and devices for impact and vibration damping and, more particularly, to devices composed of an elastoplastic material including the characteristics of damping, heat and pressure dimensional stability, and moisture non absorbency of a blend of polyolefin and conjugated diene butyl rubber which converts impact shock or vibration energy into thermal energy.

This invention relates to a method of and devices for impact and vibration damping and, more particularly, to devices composed of an elastoplastic material including the characteristics of damping, heat and pressure dimensional stability, and moisture non absorbency of a blend of polyolefin and conjugated diene butyl rubber which converts impact shock or vibration energy into thermal energy.

PURPOSE:To make the size of processor small and to make it efficient, by making common a control section which is in common state common, through one submonitor section, as one device on the hardware among input and output devices of data. CONSTITUTION:A monitor section MON starts submonitor section SM0 or SM1 through the request of an application section APL. For example, the submonitor section S...

PURPOSE:To recognize easily an indicated position, to shorten a work time, and to execute easily a work by preparing two stylus pens, dividing each of them into a picture making coordinate value input use and an operating menu input use, and using them. CONSTITUTION:Stylus pens 4, 5 indicate a graphic original idea part and an operating menu part of a tablet board 3, respectively, and these pieces...

PURPOSE:To improve the integration density of a semiconductor device while standardizing a circuit block by a method wherein a conductor layer is formed on a wall member of a vessel containing IC element while a resistance circuit net is provided on the surface of insulating cover member over the vessel through the intermediary of the conductor layer to connect IC element with the circuit net thro...

A method of improving the contacting of a gas and a liquid by injecting liquid, together with the gas in the form of substantially uniformly sized bubbles, into a vertical column of the liquid so as to introduce both a vertical downflow along the column axis and a rotational movement of the liquid-gas mixture about the axis. Preferably at least a major part of the liquid and a part of the gas is i...

An ankle base (14) is attached to the foot (12), an attachment (38) for shin member (36) is pivoted at 46 above the ankle base and travelling screw control means (32, 34) is rotatable to set the angle of the shin member (36) relative to the foot (12). The user of the limb can himself alter the control means (32, 34) to set the angle of the connector according to the heel height of the shoes that h...

In the activated sludge treatment of aqueous effluent, the effluent is aerated first by one or more mechanical aerators introducing air into the surface of the effluent, and then by one or more submerged diffusers. In this way, biofouling of the submerged diffusers (eg. fine bubble diffusers) is avoided, and also a higher efficiency in terms of mass of oxygen absorbed per unit of energy input is a...

The cabin (4) of the machine pivots through 360 DEG around the ring (3). It carries the mounting base (12) of the digger bucket arm (13), (14). The chassis (1) carries an articulated telescopic arm (20), (21) with an interchangeable lifting tool (23) (bucket, handling fork, etc). Application: multipurpose machine; also replacement for a fork-lift truck.

1,4-Dihydropyridine derivs. of formula (I) and their acid addn. salts are new. R = OH, 1-4C opt. branched alkoxy which may be substd., such as methoxy or methoxymethoxy, or 2 gps. R on adjacent atoms form an alkylenedioxy gp., such as methylenedioxy or ethylenedioxy n = 1,2 or 3 R1 and R2 = 1-4C opt. branched alkyl which may be substd., such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, me...

A fuel cut-off valve in the fuel injection pump of an internal combustion engine is provided with a device for facilitating the opening of the valve against pressure forces normally biasing the valve closed. A pair of solenoids may be provided, with both being used to open the valve and only one to hold the valve open. Alternately, a single solenoid may be supplied with a large quantity of power t...

A method and apparatus for shaping by generating for producing profiles on workpieces, especially on cylindrical gears. The workpiece and a shaping tool rotate continuously according to a fixed preset transmission ratio. The shaping tool additionally carries out an oscillating movement in the direction of its axis of rotation and thereby generates small cuts on the workpiece during at least two sh...

A method and apparatus are provided for manufacturing or machining a gear workpiece with a hyperboloidally, globoidally or similarly formed gearlike tool which has an abrasive or similar surface. The axes of the workpiece and tool are skew lines. During changing of the center distance, in particular as the workpiece and tool are moved apart at the end of the machining operation, the crossed-axes a...

The gypsum is mixed with water, formed and brought into the desired final shape of the article by application of pressure. The at least partially contaminated gypsum particles are provided with reinforcing materials before the application of pressure.

PURPOSE:To make the access of a branch destination instruction to a control storage high-speed at the branch operation time, by using a branch destination instruction register to by-pass an instruction word buffer at the branch operation time. CONSTITUTION:If branching is detected by a branch detecting circuit 9 as the result of instruction word execution, a branch destination instruction word and...