Abstract: There is disclosed a submerged type pump which is vertically seated on the seating face arranged on the bottom of the fluid lifting column and is comprised of a motor section and a pump section with a casing in which the treating fluid may pass, wherein a check valve is arranged at a pump discharge port and an automatic switch valve is arranged on the top of the casing so that the automatic switch valve is released by closing the fluid lifting column with the pump seating face and the check valve to discharge the treating fluid suspended in the fluid lifting column.

Abstract: A compressor diaphragm assembly for combustion turbines includes a plurality of vane airfoils, each of which is formed with an integral inner shroud. A segmented seal carrier is suspended from the inner shrouds, and an outer ring supports the plurality of vane airfoils from a casing portion of the turbine in a parallel relationship at a predetermined angle with respect to the longitudinal axis of the turbine. The outer ring has one or more grooves formed at the predetermined angle to engagably receive respective rows of the vane airfoils at their outer portion. Each seal carrier segment includes a pair of disc-engaging seals, and is formed to be engaged with the inner shrouds of one or more vane airfoils, in order to provide a labyrinth seal with discs assembled to form a rotating shaft.

Abstract: The present invention teaches a brake cylinder which is formed by a cylindrical housing and a cylinder base. The cylindrical housing and cylinder base are joined together by a bayonet connection and form a pressure chamber. The bayonet connection is designed pressure-tight, and it is located on the pressurized-side of a circular sealing element which seals off the cylinder base from the cylinder housing. The bayonet connection is thereby protected from the entry of detrimental environmental influences, especially dirt and moisture, and it can still be easily disassembled at all times.

Abstract: A diaphragm clamping arrangement for assembly of a diaphragm-type piston in the body of a valve device or the like such that the diaphragm is biased in a direction to cause the diaphragm convolution to assume a preferred disposition in which a desired diaphragm "spring effect" is maintained.

Abstract: In expansion-controlled light alloy pistons for internal combustion engines, expansion control elements made of steel are bonded to the carrying portions of the cast skirt on the inside peripheral surface thereof and are embedded in the hubs of the piston pin bosses. To provide for an optimum expansion control action throughout the height of the piston skirt, the expansion control elements are provided on both sides of the plane of oscillation of the connecting rod with an aperture, which is open toward the end of the skirt and has a height amounting to at least 30% of the height of the expansion control elements. Said aperture has a peripheral dimension amounting to more than 10% of the piston diameter. Projections for supporting the expansion control element at its edges defining the aperture protrude into the latter.

Abstract: A housing of a reciprocating gas compressor comprises a partition member separating an upper suction chamber through which gas passes and a lower crankcase chamber in which a crankshaft rotates and which has an oil sump at the bottom. The partition member is imperforate except for sealed openings through which cylinder sleeves and hydraulic fluid lines extend between the chambers. A conduit located on the housing exterior and connected between the chambers performs three functions, namely: enables gas flow in either direction to effect pressure equalization; enables oil to flow by gravity from low points in the upper chamber into the sump; and enables oil mist in the gas flow through the conduit to coalesce on the inner walls of the conduit and flow by gravity into the sump.

Abstract: A hydraulic cylinder apparatus is used by connecting an external pressure source with extension and contraction-side liquid chambers defined by a cylinder, a piston sliding in the cylinder and a piston rod integral with the piston. The apparatus includes seal members provided with the extension and contraction-side liquid chambers and formed to enable liquid to leak through clearances between the seal members and the parts disposed opposite to the seal members. Liquid leaked from the extension and contraction-side liquid chambers is received by a receiving chamber which is formed so as to change its volume with the movement of the piston rod.

Abstract: A master cylinder comprising a cylinder body having a bore, a plunger in the bore, a bearing secured to the rear end of the cylinder body and slidably supporting the plunger, a sleeve fitted in the cylinder bore adjacent to the bearing and receiving the plunger therein, and stopper means between the sleeve and plunger for defining a retreat limit of the plunger, wherein the cylinder body is connected to a booster shell with a sealing member therebetween, and the rear end of the plunger protrudes into the booster shell for connection to an output rod of the booster, the sealing member having a lip placed in close contact with the outer peripheral surface of the plunger. An annular set screw is threadedly mounted to the rear opening of the cylinder bore to fix the sleeve while surrounding the plunger, so that the lip of the sealing member is received in a tool-engaging recess provided on the set screw. Alternatively, the plunger comprises a front plunger and a rear plunger.

Abstract: A multistage fluid machine includes a casing, a rotary shaft, and a plurality of impellers mounted on the rotary shaft in a multistage arrangement. The impellers are fixed to the rotary shaft in such a manner that, when the impellers are projected on a plane normal to the rotary shaft, all the blades of the impellers are shifted out of phase with respect to each other in the circumferential direction on that plane in order to reduce the vibrations of the casing.

Abstract: A piston has a piston head made of ceramics, and includes a ceramic piston head having a male rounded thread portion at the outer periphery thereof, a metal piston body having a depression in the top portion for receiving the piston head, and a female rounded thread at the inner periphery of the depression for mating with the male thread portion. A rotation restraint member is provided between the male thread portion and the female thread portion for restraining the piston head from turning with respect to the piston body. The ratio of the height of the thread to the pitch preferably is from 1/4 to 1/2.

Abstract: A vacuum-type brake booster device for automotive use having a shape such that the mounting of the booster device and surrounding components inside the engine compartment of the vehicle is markedly eased. The shell of the booster device, and hence the diaphragm contained therein, has the shape in the plane of the diaphragm of a circle having a peripheral segment thereof removed. This causes the effective center of the diaphragm to be shifted from the center of the circle. The input and output shafts and the master cylinder are mounted on the shell aligned with the offset effective center of the diaphragm.

Abstract: In a tandem master cylinder, the primary and secondary outlet-pressure spaces of which are respectively limited in the axial direction by the push-rod or primary piston and a secondary piston designed as a floating piston or by the latter and an end wall fixed relative to the housing. A restoring spring urging the secondary piston into its basic position is arranged in a central cavity located in the secondary piston which is limited by a blind bore of the latter. The restoring spring is supported on the piston side on the inner face of the bottom of a pot-shaped supporting projection facing toward the primary piston and belonging to the secondary piston and, on the housing side, on a radial stop pin passing through a longitudinal slot of an intermediate part of the secondary piston extending between the two piston flanges which form the respective pressure-tight displaceable limitation of the secondary outlet-pressure space on the one hand and of the primary outlet-pressure space on the other hand.

Abstract: A reversible spring return cylinder actuator having a pair of piston rods extending from a common spring load piston to the exterior of the housing. In a non-pressure position of the piston, one of the piston rods extends further from the housing than the other. Either piston rod and either end of the housing can be mounted to a device to be actuated so that the same actuator can be used to define a non-pressure extend or retracted actuator without disassembly of the actuator.

Abstract: A single stage axial blower design provides a series of blowers producing a wide range of delivery flow rates even though they have the same outer dimension, drive speed and guide wheel. This is achieved by a structural combination which includes a stationary guide vane wheel (5) of fixed design and impellers (8) which have varying hub diameters (9, 9a, 9b) but the same outer diameter. Thus, a series of blowers having the same external dimensions and the same stationary guide vane structure can be used with a series of air-cooled internal combustion engines which differ from one another in number of cylinders and related cooling requirements.

Abstract: A fan assembly for the cooling of electronic systems, where a square housing is provided with a central electric motor for the impeller, and a first main inlet surface of the housing is arranged perpendicular to the axis of rotation of the impeller and in parallel to the inflow direction, and where the flow through the fan is deflected by 90.degree. after it leaves the impeller to exit, the housing at at least one lateral outlet surface that is perpendicular to the first main inlet surface which assembly results in a drastic reduction of noise.

Abstract: A conveyor device which is equipped with grippers secured to a chain structure is arranged beneath a rotary bucket or fan wheel of a printing machine, typically a printing press. These grippers engage trailing edges of the printed products which still abut against at least one stripper wheel. The printed products are thus fixedly retained before departing from the rotary bucket or fan wheel. By means of a revolvingly driven belt, which engages at the trailing edges of the printed products, these printed products are displaced or stuffed into the associated compartment or bucket of the rotary bucket or fan wheel prior to their engagement by the grippers. The printed products thus assume a defined position within the compartments or buckets, thus rendering possible the subsequent positionally-correct removal of the printed products from the compartments or buckets of the rotary bucket or fan wheel.

Abstract: A single stage centrifugal fuel pump which can provide a large range of flow, 1 to 300 gpm, while maintaining low flow, high speed operation with pressure instability at minimum values comprises a radial-flow impeller having a front shroud and a discharge for discharging fuel from the impeller. A diffuser ring has a throat entrance located opposite and in spaced relation to the discharge of the impeller. The front shroud is provided with an extension which extends into the vaneless space between the impeller discharge and the throat entrance of the diffuser ring thereby reducing the flow at which pressure instability inception occurs.

Abstract: A braking-power booster including a valve for controlling the pressure that acts upon the booster piston. The valve has two radially spaced valve seats, which both face toward and seal off against a valve sealing plate. With the radially inward valve seat off the valve plate, air passes through the valve. A silencer in the form of a screen is arranged directly alongside the radially inward seat that is opened off the plate. Upon air passing through the valve, the screen suppresses noise generated in the valve. The screen is of a round-wire netting, comprised of brass wire that is galvanized. The screen has a cup-shape, and its convex side faces the seat.

Abstract: A cooking apparatus including an eye level range includes a vent system for exhausting heated air and providing cooling a range electrical control components. A manual off, low, high selector switch is operable to operate a blower fan motor. A thermostat switch is provided for sensing a high temperature adjacent a compartment housing the electrical controls of the range unit in order to automatically turn the fan on to its high speed when a preselected high temperature is sensed.

Abstract: A vacuum pump including a centrifugal compressor stage on the side of a suction opening and a circumferential flow compressor on the side of an exhaust opening. The centrifugal compressor pump works as a Siegbahn pump at a steady state, and works as a centrifugal compressor under a transient condition at the initial stage of the pump operation, thus obtaining a high pumping speed under the transient condition.