Abstract: In a housing 20 of an oil-cooled screw compressor 10, a separation gas supply path 59 through which separation gas is supplied to a separation gas supply gap 58 defined between a first seal unit and a second seal unit of a seal device 50, and a pressure balancing path 60 through which an area closer to a screw chamber 20a than the first seal unit in a discharge side seal chamber 20d communicates with a compression chamber at a pressure higher than an intake pressure and lower than a discharge pressure, are defined. A check valve 62 that restricts a flow of a fluid in a direction from the screw chamber 20a to the discharge side seal chamber 20d is disposed in the pressure balancing path 60.

Abstract: In a housing 20 of an oil-cooled screw compressor 10, a separation gas supply path 59 through which separation gas is supplied to a separation gas supply gap 58 defined between a first seal unit and a second seal unit of a seal device 50, and a pressure balancing path 60 through which an area closer to a screw chamber 20a than the first seal unit in a discharge side seal chamber 20d communicates with a compression chamber at a pressure higher than an intake pressure and lower than a discharge pressure, are defined. A check valve 62 that restricts a flow of a fluid in a direction from the screw chamber 20a to the discharge side seal chamber 20d is disposed in the pressure balancing path 60.

Abstract: The object of the present invention is to provide a compression system to effectively compress contaminated gas containing water and other corrosive substances (natural gas) without suffering any adverse effects caused by toxic substances, including impurities, and which includes a path which heats the compressor using gas with a low dew-point temperature, such as water free gas or purified gas from outside the system, that is substantially free of water, or discharged gas after having been compressed by the compressor, a separator provided upstream of the suction section of the compressor, which separates water and the like from natural gas by cooling and condensation, and a dew-point maintaining arrangement for maintaining the discharged temperature of gas from the compressor above the dew-point temperature of the compressed gas when compressing natural gas from which water has been separated by the separator and characterized in that, when direct compression of the actual gas (contaminated gas) is necessar

Abstract: A calcium-magnesium carbonate composite consisting of particles of calcium carbonate and magnesium carbonate hydroxide and having excellent properties, for example, as a pigment for paper coating is proposed, which is a uniform blend of:(A) particles of calcium carbonate having a crystalline structure of aragonite with a columnar particle configuration having a length in the range from 0.5 to 3 .mu.m and a diameter in the range from 0.1 to 0.3 pm with an aspect ratio in the range from 5 to 15; and(B) particles of magnesium carbonate hydroxide having a plate-like particle configuration with a particle diameter in the range from 2 to 7 .mu.m and a thickness in the range from 0.05 to 0.5 .mu.m,the blend having an overall specific surface area in the range from 15 to 30 m.sup.2 /g and the weight proportion of the particles of calcium carbonate to the particles of magnesium carbonate hydroxide being in the range from 95:5 to 50:50 calculated as the respective hydroxides.

Abstract: A wound unit of an electronic components series comprises a cylindrical core and a tape-shaped electronic components series wound in layers on its circumferential surface. On the periphery of the core, there is formed a slit. The electronic components series include a carrier tape made of a cardboard or the like on which not only the feeding holes having a certain pitch are formed but also many through holes responding to the shape of electronic components to be contained therein are distributed in a longitudinal direction. In each of these through holes are contained electronic components and on both of the main surfaces of the carrier tape, cover tapes are adhered to seal off the through holes. The tip of the electronic components series is inserted into the slit of the core and the electronic components series is wound in layers on the circumferential surface of the core.

Abstract: In an electronic component series of the type wherein a plurality of electronic components are distributed in the longitudinal direction of a tape-like receiving member to be retained by the same, a cover tape is heat-sealed to a receiving tape having receiving concavities for receiving the respective electronic components. Stepped portions or protrusions are forned in the receiving tape to define regions not in contact with the cover tape. This restricts the extent of the sealed regions wherein the cover tape is heat-sealed to the receiving tape, such that the sealed regions are substantially constant in width which results in a substantially constant force being required for removing the cover tape from the receiving tape.

Abstract: In a taped electronic component series provided with concavities (4, 5; 15, 16, 17) in a plurality of lines, the concavities of the respective lines are made to deviate from each other by length corresponding to the product of the arrangement pitch (P) of the concavities in each line and the inverse of the number of the lines along the longitudinal direction of the receiving tape (1; 11), so that the electronic components received in the concavities are placed in a withdrawal position one by one by feeding the taped electronic component series at a constant pitch for withdrawing the electronic components (3; 18) from the concavities.

Abstract: An electronic component series wherein a plurality of parallel lead type electronic components (1) each having two parallel lead wires (4) are equispaced along a retainer band (2) and distributed along the length of the retainer band (2) with the lead wires (4) extending in the same direction and are positioned by the retainer band (2), whereby the electronic components (1) are retained. The electronic component series is characterized in that the distance (A) between the pair of lead wires (4) of each electronic component (1) in a region (4a) where the lead wires (4) are placed on the retainer band (2) is made different from that (B) in a region (4c) closer to the electronic component main body (3), while the intermediate portions (4b) of the lead wires (4) are bent to absorb the difference in dimension between the distances (A, B).

Abstract: An electronic component series (11) for feeding electronic components to an automatic inserting machine comprising a carrier band (12), a plurality of the parallel lead type electronic components (13) arranged on and distributed longitudinally of the carrier band (12), and an adhesive tape (17) bonded to the carrier band (12) with the lead wires of the electronic components held therebetween, the lead wires (15, 16) being cut off adjacent the end edge of the adhesive tape associated with the extremities of the lead wires (15, 16), and the extremities being removed.

Abstract: A method of securing a bottom plate made of a plastic material to one end of an open-ended, hollow cylinder made of a plastic material to produce a plastic cylindrical container, wherein the bottom plate is held in a horizontal position and the open-ended, hollow cylinder having an inner diameter slightly larger than the diameter of the bottom plate is positioned in enclosing relation to the bottom plate in such a manner that a portion of the cylinder projects upwardly a predetermined distance from the bottom plate. The upwardly projecting portion is heated and softened and bent radially inwardly into contact with an outer marginal portion of the bottom plate. The bent portion of the cylinder maintained in contact with the outer marginal portion of the bottom plate is pressed and heated, so as to join them by the fusion thereof.

Abstract: A chip-like electronic component series comprises a tape-like member formed with a plurality of apertures arranged in the longitudinal direction for receiving one by one a plurality of chip-like electronic components, cover sheets adhered to both surfaces of the tape-like member for sealing the apertures, and feeding perforations formed equispaced in the longitudinal direction of the tape-like member. The chip-like electronic component series is fed by using the feeding perforations, and the chip-like electronic components are supplied therefrom onto a print circuit board, for example, by stripping the upper cover and by pushing the electronic components one by one onto the print circuit board while the lower cover sheet is broken, by picking up the electronic components therefrom one by one, or the like to place the same onto the print circuit board.