Abstract: Air leakage passageways formed by an elongated sealing finger deflected through a sealable collar of a vacuum cleaner bag are substantially eliminated by the use of straddling tabs or an additonal elastic membrane across the collar opening which assure a total seal between the collar opening and the vacuum cleaner inlet fitting when the latter extends through the opening.

Abstract: Disclosure is made of a bar-clamping device having a hollow spindle carrying first and second collets, each provided with a closing drive ensuring independent axial motion of one of the collets relative to the other. The closing drives of each collet are installed in the spindle and designed so that the axial efforts produced during clamping of a bar are directed in the opposite directions.

Abstract: A fully articulated suspension is adapted for linking a frame of a vehicle to axles. To facilitate assembly a C-shaped spring in the form of a plate located in the plane of bending is hinged to axles inside its midmost portion and to the frame through its ends. The C-shaped spring is hinged to the frame through shackles so that a vertical displacement of the spring ends is at its possible maximum whereas a horizontal displacement thereof is not greater than one half of the permissible deformation of the spring in the horizontal direction.

Abstract: In a sailing yacht with a centerboard having a hull accommodating a centerboard well containing the centerboard capable of movement therein through rollers along curvilinear guides provided in the centerboard well, according to the invention, the rollers and guides are positioned at either side of the centerboard along its stern edge, the rollers being secured immediately on the centerboard.

Abstract: A device for display of information has a receiver-amplifier unit connected to a source of an information signal, horizontal and vertical scanning generators, a converter of the signal into the displayed image, which is connected to the horizontal and vertical scanning generators, an output amplifier, a detector of image contours, connected to the receiver-amplifier unit, a threshold unit connected to the image contour detector, a control signal generator connected to the threshold unit and the output amplifier. Thus, complete scanning beam arrest is accomplished.

Abstract: An information storage device, has a container and at least two identical tical information carriers arranged coaxially inside the container and adapted for independent rotation in relation to each other. Each optical information carrier has a hollow cylindrical base made of a material transparent for laser radiation and a recording layer applied on this cylindrical base.

Abstract: A method of downhole hydraulicking mineral resources includes production panels being laid out at a deposit, holes being sunk in a longitudinal axis of each production panel, and device for hydraulicking mineral resources, comprising a monitor and a means of lifting pulp to the surface, being lowered into each of the holes. A mineral is broken hydraulically by a jet from the monitor, and the monitor jet being displaced at least once in a horizontal plane within confines of a main sector extending in a direction opposite to that in which a next hole is located, in radial working so that pillars are formed therebetween. An angle of each radial working is about the divergence angle of the jet of the monitor, and the angle the radial working make with each other is decided by the conditions of stability of the pillars between the radial workings during a period of driving a radial working.

Abstract: The method of casing off a producing formation in a well includes drilling into the producing formation (19) and reaming the borehole in the producing formation zone. Then the producing fomation (19) is shut off with a fluid-impervious envelope (14) of profile pipes reamed in the process of their setting by building up a pressure drop thereacross. Then the flow casing string (5) is run into the well and cemented, followed by re-exposing the producing formation (19). The running-in of the flow casing string (5) is terminated upon its having entered the upper part of the fluid-impervious envelope (14).

Abstract: An apparatus has an eccentric shaft on which are mounted rolls connected to one another by flexible members in the form of a corrugated collar for end sealing of the rolls and with auxiliary members for radial sealing of the rolls. The auxiliary members are received in a radial clearance defined between the adjacent rolls which are made hollow.

Abstract: An apparatus for overhead submerged-arc welding includes a driven trolley supporting a vertical slide with a carriage. On the carriage (22) is mounted an arm on the end of which with a possibility of swinging with respect to its longitudinal and transverse planes there is located a forming means. The apparatus also has a hopper with flux accommodating a nozzle for a consumable electrode, a bowl provided in the top part of the hopper through which extends the nozzle for the consumable electrode (14) and means for supplying and pressing the flux. The hopper is mounted on the pivot pin disposed on a front wall (18) of the forming means to extend in parallel with a transverse axis thereof and aligned with the upper and face of a rear wall of the bowl located adjacent to the nozzle. Such location of the pivot pin supporting the hopper (1) and the forming means ensures swinging of the bowl in transverse direction and constant preset flux pressure in the welding zone.

Abstract: A method for speed control of railway transport facilities and a device to accomplish the method are used for deceleration and acceleration of transport vehicles in shunting yards. In the process of speed control a pressure element is introduced into an annular space cavity in a wheel, which cavity is formed by the disk hub and inner circular surface in the wheel rim, and is located on the inner or outer side of the wheel, said pressure element applies force action to any point located within one of the two inner circular wheel rim surface regions, located at both sides of an imaginary plane "a-a", passing through the axle of the wheel and through the wheel-to-rail contact point B. The pressure element has a shape designed to provide free entrance of the element into said annular cavity, which pressure element is mounted on a carriage, the carriage being movable along the track. The value of the pressure element force in this solution will not be limited to the weight of a wagon.

Abstract: The objects of the invention are attained in an apparatus for performing a method of analysis of organic compounds in chromatography, comprising a chromatographic column sealingly connected with the housing of a surface ionization detector having coaxially arranged inside, a collector and a thermoemitter with current leads, the housing of the surface ionization detector being provided with an opening for an auxiliary gas feed line and an opening for delivering the spent gases. The thermoemitter includes a closed-end sleeve with a heating element in contact with the external non-working surface of the thermoemitter. The collector includes a hollow cylinder spaced from the inner ionizing surface of the thermoemitter, and the outlet portion of the chromatographic column being received inside and throughout the length of the collector.

Abstract: The method consists in that the formation pressure is measured, and a solvent is fed through a well into the formation. Then a hydrophilizing solution is fed through the same well into the same formation. The supply of the solvent and hydrophilizing solution is effected while keeping the bottom hole pressure approximately equal to the formation pressure.

Abstract: The method resides in applying to a machined article a positive electric potential from 200 to 400 V and submerging the article into an aqueous electrolyte solution of a concentration from 2 to 12% by weight, at a temperature from 40.degree. to 95.degree. C.

Abstract: A polymeric anticorrosion film having a thermoplastic matrix made with a gradual transition from a nonporous to a porous structure formed by a system of closed and communicating pores filled with an inhibitor liquid with an increasing apparent density to a value equal to the thermoplastic density by 1/4-2/3 of the film thickness in the direction from one of its surfaces.

Abstract: A composition for preparing artificial stone materials has the following formulation (mass %):soluble glass: 3-65limestone: 1-75aqueous solution of an acid with pH 1-4: 5-52This composition ensures the production of a wide range of high-strength structural and heat insulating materials.

Abstract: An apparatus for electroerosive piercing of holes in workpieces having an electrode tool in the form of a rod placed with a clearance in a shell and projecting therefrom, a device for feeding and rotating the rod mechanically connected to a device for reciprocating the shell relative to the rod. The device for reciprocating the shell relative to the rod is fashioned as a hydraulic cylinder, a piston of which has the shell rigidly secured thereto at the side of the workpiece, and at least one cavity of the hydrauylic cylinder is connected to a system for feeding and discharging a working fluid, the piston having at least one passage communicable with the interior of the shell of the electrode tool and wherethrough the rod of the electrode tool extends with a clearance.

Abstract: A unit of series-connected semiconductor elements includes a cylindrical metal case with a clamping mechanism enclosed therein. A chain of semiconductor elements is arranged between the surfaces of clamping elements of the clamping mechanism coaxially with the case. One extreme semiconductor element of the chain contacts the bottom of the case made of a current-conducting material, functioning as one clamping element of the clamping mechanism. The second extreme semiconductor element of the chain contacts the second clamping element of the clamping mechanism, made of an insulation material and mechanically coupled with the side walls of the case.The unit also contains current-carrying busbars electrically associated with the outputs of the extreme semiconductor elements of the chain, one of the current-carrying busbars being electrically connected with the upper part of the side wall of the case.

Abstract: In the pumping element of a cryogenic sorption pump, a sorbent material is accommodated in annular spaces between heat conductor shells and porous screen shells, with the shells being attached to the cover of a cryogenic agent vessel so as to make good thermal contact therewith.