A practice for applying indicia to the surface of a precious stone wherein a source of laser energy is directed at the stone surface and controlled to inscribe the surface with the desired indicia.

PURPOSE:To uniformly compress a plate group between cells by accommodating a plate group body obtained by accommodating a plate group in a flexible bag in an empty box-like container. CONSTITUTION:A cathode plate 2 is covered with a U-shaped separator 1 comprising nonwoven fabric made of glass or the like, and anode plates 3 are placed on its both sides to make a plate group 6. The plate group 6 i...

PURPOSE:To obtain the titled differential speed increasing gear of a centrifugal separator which is compact and capable of increasing the speed without rotating the whole apparatus by interposing two epicyclic gear mechanisms between the shaft of a driving source and the shaft of a rotor, fixing the one mechanism and rotating the other mechanism. CONSTITUTION:A differential speed increasing gear 2...

PURPOSE:To reduce torque shock associated to cylinder number control, by providing means for releasing the lock-up clutch temporarily when exchanging the number of working cylinder through a cylinder number controller. CONSTITUTION:Under engine 1 operation, control circuit 13 will decide whether it is the lock-up region or not on the basis of outputs from engine rotation sensor 18, throttle valve ...

To seal a cable junction, an insert is placed between two branch cables (42a,42b;55,56;56,101a,101b) of the junction, which is then enclosed by a heat shrinkable envelope (45,58,103). The insert has at least one insert part having a block (32,43a,43b,50,70,80,100a,100b,100c) of heat fusible material attached by one or more flanges (31,41a,41b,51,82,102a,102b,102c) of heat conductive material to th...

Method and apparatus for transmitting measuring data to the surface from a oil well, where electromagnetic signals are cyclic transmitted a clock activated transmitting unit in the oil well, the signals comprising data for registrated parameters, using the casing of the oil well as transmission line, up to a receiver unit arranged at the upper end of the oil well, which receiver unit is activated ...

PURPOSE:To stick a negative film of the second color and thereafter, to the same position as a negative film of the first color, by driving a sticking head, based on a position data which is obtained from a base sheet of the first color by a coordinate reader, and reading an exact register mark position of each negative film. CONSTITUTION:A base sheet of the first color which is stuck a negative f...

A method of bond moulding rubber on glass, wherein the rubber-glass bond is established while the rubber undergoes dimensional conformation and chemical change from the plastic phase into the elastic phase under the combined actions of time, heat and/or pressure. The method comprises the following steps: glass degreasing by means of organic solvents of the alphatic and/or aromatic series; applicat...

The present invention relates to a method for determining the bubble point pressure of a fluid produced from a drilling well or circulating in an industrial installation. This method is characterised in that the transmission of light through the fluid is measured continuously, as the fluid flows in a well 1 which may or may not be equipped with a production column 3 or in a surface installation 5,...

To seal a cable junction, an insert is placed between two branch cables (42a,42b;55,56;56,101a,101b) of the junction, which is then enclosed by a heat shrinkable envelope (45,58,103). The insert has at least one insert part having a block (32,43a,43b,50,70,80,100a,100b,100c) of heat fusible material attached by one or more flanges (31,41a,41b,51,82,102a,102b,102c) of heat conductive material to th...