Abstract: A single tube surface operated pump including a piston reciprocally mounted in a cylinder for alternately opening and closing a liquid delivery port formed in the side of the cylinder and for generating a sonic pressure wave by impacting a column of liquid contained in a metallic tube extending from the cylinder to a remote pumping mechanism located in communication with the liquid to be pumped. The piston is especially configured with a central recess in the face thereof so that the sonic pressure waves generated thereby will pass through a sonic pressure wave swirl chamber and move toward the pumping mechanism in a spiral-like motion against the inner wall of the metallic tube and enter into a sonic intensifier chamber where they are reflected off the pumping mechanism into a central column which travels back toward the cylinder and causes the fluid to be pumped to move in that same direction.

Abstract: This invention provides a double-acting, double diaphragm pump particularly for fluids such as chemical compounds. The pump employs adjustable disk members mounted on a reciprocable rod connecting and actuating the diaphragms. These disks alternately engage the extending shaft of a pilot valve to move the valve and redirect the flow of pressurized fluid therethrough. The pressurized fluid behind the diaphragm is now caused to flow to a slide valve and cause it to be moved to an opposite limit. The slide valve is cycled by the pilot valves as the disks on the reciprocated rod engage the pilot valves. Each pump half has the exterior wall member disposed to carry two one-way valves, one valve to inhibit inward flow to the chamber and one valve to inhibit flow from the chamber.

Abstract: An improved hydraulic pump wherein a piston is mechanically reciprocated by a suitable drive in an oil chamber, and a second piston is caused to reciprocate by the oil pressure developed in the chamber, the second piston also reciprocating in a pumping chamber to cause the pumping of a liquid through the pumping chamber; a diaphragm attached to the second piston provides liquid isolation between the oil chamber and the pumping chamber.

Abstract: A pressure fluid motor adapted to be operated by compressed air, steam, or hydraulically, comprising a cylindrical housing having a smooth inner surface and a concentric cylindrical rotor having a roughened surface provided with inlet means for introducing the pressure fluid into the space between the rotor and the housing and outlet means remote from the inlet means for venting spent pressure fluid whereby the pressure fluid is induced to flow through the motor in a vortex path. The clearance between the rotor and the housing is from about 0.0075 to about 0.03 inches.

Abstract: A spring actuated piston pump for use in lubricating the bearings of a turbo-charger rotor, both on starting and stopping an associated internal combustion engine. The pump has a piston-and cylinder combination the piston of which is spring-urged towards the cylinder head, and there is a releasable catch arrangement operable on the piston to restrain movement of the piston towards the cylinder head when the piston is part-way between the extremes of its travel. The catch means is solenoid operated for connection to the engine starter system, so that the piston is released when the engine is started.The pump chamber is connected to the engine lubrication system and the turbo-charger bearings through suitable ducts and one-way valves, so that on ordinary operation of the engine the pump chamber is full of oil with the piston fully retracted. On stopping the engine the piston moves under the spring bias discharging oil to the turbo-charger bearings until restrained by the catch arrangement.

Abstract: An electromagnetic plunger pump includes a plunger which is electromagnetically activated. Normally, the plunger is supported in a balanced condition by a pair of opposing springs. Further, the plunger is vertically pierced by a hole extending along an axial line in which the plunger reciprocates in the vertical direction, responsive to an application of an intermittent electromagnetic force. A valve body is loosely fitted into a rod inserted in the vertical hole, reaching a contact portion of a discharge plunger, which interlocks with the electromagnetic plunger. The discharge plunger is forced shut by a spring acting in the valve closing direction. The valve body engages a valve seat to close a discharge passage during a pump shut-down. The valve body is liberated from the valve seat to open the discharge passage during pump operation.

Abstract: A lubricating device, especially for use with a hermetic motor compressor unit, having a vertical shaft extending downwardly into a lubricant sump. The lubricating device comprises a pick-up tube having a larger diameter upper cylindrical portion open at the upper end thereof and adapted for being fitted into a central bore in the shaft, a smaller diameter lower cylindrical portion adapted to be immersed in fluid in the sump, a tapering transition region connecting the upper and lower cylindrical portions, an inlet port extending axially into the lower end of the lower portion, and the pair of diametrally opposite ribs on the lower cylindrical portion comprising ridges on the inner surface and corresponding hollows on the outer surface thereof.

Abstract: A diaphragm pump is described comprising a reciprocated diaphragm for expanding and contracting a chamber communicating with a passageway connecting the housing inlet and outlet for pumping a fluid therethrough, and a pair of check valves in the passageway permitting the fluid to flow only from the inlet to the outlet. The check valves are disposed along laterally-spaced parallel axes and provide a forward fluid flow through both valves in the same direction along the laterally-spaced parallel axes, the outlet of one check valve communicating with the inlet of the other via a folded section of the passageway having two 180.degree. bends. Such an arrangement enables the diaphragm pump to be constructed in compact and/or miniaturized form.According to another described feature, the diaphragm pump is constructed in combination with the peristaltic pump having an inlet for a liquid to be pumped, and an outlet connected to the inlet of the diaphragm pump. Both pumps are driven by a common drive shaft.

Abstract: An axial-flow fan is disclosed which comprises a fan wheel and a housing casing surrounding said fan wheel, the fan wheel having a hub with a diameter which is at least half as large as the inner diameter of the housing casing and wherein the housing casing is cylindrical in the axial central plane and is broadened at least toward the exhaust side by way of corner pockets into a square profile circumscribing the diameter of the fan wheel. The hub of the fan wheel is provided on the inlet side with an annular surface which extends approximately over one-third of the entire axial length of said hub and which has a conical configuration toward the end face.

Abstract: A pump system includes a source of fluid under pressure conveyed into a fluid chamber containing meshing gears which are rotated by the pressurized fluid to, in turn, transmit rotation to a unitary valve member positioned in a housing. Rotation of the gears also displaces fluid at a preselected flow rate through an inlet port of the housing and into a first inlet port of the rotary valve member. During the first one half cycle of rotation of the rotary valve member, fluid is conveyed through a first set of aligned outlet ports of the valve member and the valve housing to a water pump for displacing a water piston. The water piston is displaced to convey water through a first conduit. During the second one half cycle of rotation of the rotary valve member, fluid is conveyed through a second set of aligned outlet ports of the valve member and the valve housing to displace the water piston in an opposite direction to convey water through a second conduit.

Abstract: A miniature diagonal blower with axial inward flow and radial outward flow is disclosed. The blower comprises a drive motor having a shaft stub and a motor housing, a fanwheel including a hub fitted with fan blades, said hub being mounted on the shaft stub of the drive motor, a fanwheel housing surrounding the fanwheel without contacting said fanwheel and being provided with recesses for the inward flow and outward flow, a flanged surface associated with the motor housing, said flanged surface projecting on the outward flow side beyond the fanwheel toward the inward flow, said fanwheel housing being provided with support legs distributed about the circumference of the fanwheel in the vicinity of the outward flow, said legs delimiting recesses located between them for the outward flow and being mounted by their soles on said flanged surface means associated with the motor housing with fastening means.

Abstract: A discharge gas temperature sensing corrective arrangement for a hermetic motor-compressor unit is disclosed wherein a heat sensitive element is supported in a discharge muffler located remote from the compressor outlet and in good heat transfer relation with compressed gas entering the discharge muffler from the compressor outlet so that the heat sensitive element provides an indication of the temperature of that compressed gas as it enters the discharge muffler. The discharge muffler outlet is connected to a somewhat conventional refrigerating circuit and a conduit connects the discharge muffler inlet to the compressor outlet. The compressor may include a plurality of gas compressing cylinders having their respective discharge ports connected together to form a discharge gas manifold which functions as a muffler within the compressor with the conduit connected to that discharge gas manifold.

Abstract: A free piston engine pump system operates in response to internal combustion for pressurizing a working fluid to provide hydraulic power output. The free piston engine pump has double acting power pistons and pumping pistons fixedly attached as a main reciprocating member and movable relative to a housing, which itself may be relatively movable for mass balancing purposes. Air is supplied and exhaust products are exhausted from a pair of opposite combustion chambers by respective common intake and common exhaust valves that preferably are operated by a common actuator in direct or indirect (via a phasing valve) response to position of the main reciprocating member. Moreover, operation of fuel injectors and exhaust valves associated with respective combustion chambers is directly or indirectly (via the phasing valve) controlled in response to the position of the main reciprocating member in the housing and/or fluid pressure in respective pumping chambers.

Abstract: A flow stabilizer is presented which equalizes the flow of fluid through the passageways of the channel diffuser used with a centrifugal type rotary compressor. Slots are formed in the sidewalls of the flow separating vanes in the diffuser. The slots open into cavities within the vanes. The multiplicity of cavities communicate by means of openings through the diffuser wall into a common closed manifold. The fluid interconnection between the multiplicity of passageways in the diffuser and the encircling common manifold increases the operating range of the compressor since pressure surges in one or more passageways are quickly equalized.

Abstract: A multichannel pump wherein the flow rate through each channel can be independently adjusted. In one embodiment there is a frame composed of upper and lower disc-shaped members which support a shaft in the center and a plurality of tube holders around the periphery. An eccentric cam is carried on the shaft and sequentially contacts resiliently deformable tubes in the respective tube holders. Each tube holder is independently adjustable toward and away from the path of travel of the cam and each can be removed for replacement or repair without affecting operation of the remainder of the apparatus. Also included are structures permitting the use of tubing having a low degree of elasticity, such as Teflon and the like. In another embodiment there is one or more cassette-like pumping units each of which contains two independently adjustable channels. The cassette-like units are so constructed that any reasonable number of the units can be combined to provide a multichannel pump having as many channels as needed.

Abstract: A ceramic vane ring for a turbine rotor is provided with slits on the inner and outer cylinderical ceramic cover ring holding the vanes. The slits provide radial stress relief and prevent fractures arising out of thermal stresses in the ceramic vane ring.

Abstract: A disposable pump of plastics material for dispensing small metered amounts of liquid from a single opening container to which it has been attached and which can be closed thereby, comprises a one piece housing and a cylindrical piston; the housing has gas inlet means for allowing gas to enter the container if any subatmospheric pressure should occur therein. A control unit for operating this pump comprises a programme for imparting a certain succession of rotative and sliding movements to the piston of said pump.

Abstract: Novel locking means for coupling shafts together is disclosed in which the shafts are threaded together thus axially and radially locating the first and second shafts, and are locked by means of a knurled portion encircling a first one of said shafts interacting with an internally knurled key having a peripheral shape corresponding to a removed portion of a second shaft whereby relative rotation of the shafts is provided. In a preferred embodiment, one of said shafts comprises a tubular shaft formed integrally with an impeller of a pump which may be formed of fiberglass so as to be corrosion resistant. A collar may be provided to simultaneously lock the key to the two shafts.

Abstract: An integral composite airfoil and disc assembly for use in a turbomachine is provided wherein the assembly includes an airfoil portion having a plurality of axially adjacent first filaments extending in a first direction. The assembly further includes a hub portion having at least one second filament extending in a second direction and a matrix material dispersed between filaments of the first plurality and the second filament. The first and second filaments are disposed so as to extend in the direction of principal stress in the airfoil and disc portions respectively.

Abstract: Disclosed is a centrifugal-blower impeller made from a back plate and a front plate and blades attached between these plates. The back plate or the front plate of the impeller or both of them are prestressed in a direction opposite to the stresses produced by centrifugal force when the impeller rotates. According to a preferred embodiment of the impeller the back plate is prestressed by means of a stressing member having the shape of a truncated cone, which is supported by the inner end of the hub of the driving shaft of the blower. In addition a stressing flange is attached to said hub and is tightened to the back plate by means of bolts. The front plate may be prestressed by means of a stressing ring mounted on the suction ring of the front plate.