Abstract: A hermetic refrigeration compressor system comprises a sealed shell containing two motor-compressor units of different capacities and also containing a suction gas accumulator through and from which suction gas is delivered to both units, the interior of the shell being at suction pressure; gas from an outlet of the accumulator being directed into an aligned, spaced inlet in the motor cover of the smaller unit. Both units are spring-mounted on a unitary support within the shell.

Abstract: A securing apparatus is proposed for electric fuel pumps intended for direct in-tank installation, which enables satisfactory removal of fuel vapor from the suction area of the pump, but prevents the transmission of vibration onto the fuel spinner fixedly mounted in the tank. This is accomplished in that the elastic properties of one or more rubber elements, directly connected in the form of sleeves to the pump, are maintained even with the effects of aging, since the rubber elements are primarily stressed only by shear or bending forces. The pump is inserted, with the mounted rubber element, into a corresponding device in the fuel spinner and, so far as this is necessary, secured with clamping elements. The rubber elements fulfill the functions of holding the pump, sealing the pump suction chamber from the tank, damping noise, and removing vapor in the tank.

Abstract: A suspension system for a linear reciprocating machine incorporates dynamic vibration isolation means into a mass flow system of the machine. An antiphase mass movement results in an essentially zero transmissibility of machine vibration to an outer casing enclosing the machine.

Abstract: A hermetic motor-compressor for a refrigerating system. The hermetic motor-compressor has a motor component and a compressor component drivingly coupled to each other and disposed within a closed container. The refrigerant gas introduced from an evaporator of a refrigerating system through a return pipe is once released into the space within the closed container and then sucked by the compressor component so as to be compressed and discharged to the outside. A barrier is provided on the outer periphery of the motor and compressor components for preventing a main flow of the refrigerant gas introduced into the closed container through the return pipe from flowing into the circumference of high-temperature portions of the hermetic motor-compressor.

Abstract: An apparatus with a vacuum system, said vacuum system including a vacuum chamber adapted to contain main instruments of the apparatus, and an exhaust device adapted to exhaust air from the vacuum chamber, which apparatus comprises a structure for vibration isolation adapted to prevent the transmission of the vibration of the exhaust device to a main section of the apparatus, the exhaust device of the structure comprising a bellows connected with the vacuum chamber, an exhaust tube connected with the bellows and a vacuum pump attached to the exhaust tube; and the bellows, the exhaust tube and the vacuum pump are arranged to construct a pendulum system in which the bellows is adapted for a fulcrum, whereby the vibrations of the vacuum pump are absorbed by the pendulum system and do not reach the main section of the apparatus. Other structure for providing additional guidance and dampening of the pendulum system may also be provided.

Abstract: The invention relates to an encapsulated refrigerator assembly of the type in which an integrated motor and compressor unit is resiliently mounted in a hermetically sealed casing or capsule. An oil sump at the bottom of the capsule is provided for lubricating oil. An externally disposed centrifugal separator with an oil collecting tank at the bottom thereof provides refrigerant in vapor form for the compressor and oil for the oil sump. The compressor has an inlet for receiving refrigerant vapor from the separator and the capsule has a single port connected to the separator. A connecting pipe inside the capsule provides fluid communication between the capsule port and the inlet of the compressor. Universal joint fittings at opposite ends of the connecting pipe allow for relative movement between the resiliently mounted motor compressor unit in the capsule and the relatively stationary capsule walls.

Abstract: A suspension and seal system for a motor compressor unit mounted within a hermetically sealed shell. The shell defines at least one chamber filled with refrigerant suction gas and a second chamber filled with refrigerant discharge gas. The compressor's cylinder block includes a radially extending wall member. A second wall member is spaced from the first wall member for defining a space for receiving a combination seal and suspension member. Resilient members are provided at predetermined locations about the motor compressor unit and are squeezed between opposed surfaces of the unit and the shell for dampening motion of the unit within the shell.

Abstract: A peristaltic motor is provided comprising a reciprocating slave piston adapted to be actuated by the progressive, sequential contraction of two aligned, resiliently deformable peristaltic tubes by a weighted roller such as a wheel of a heavy vehicle. The leading ends of both tubes, that is the ends first contacted by the moving roller, are connected to the slave cylinder, one on either side of the piston and the trailing ends of the tubes are connected to one another so that movement of the roller from the leading end to the trailing end of the first tube causes the hydraulic fluid therein to move down the tube and into the slave cylinder moving the piston through half a stroke. Movement of the roller in the same direction over the second tube, forces the hydraulic fluid into the other side of the slave cylinder to move the piston through the second half of the stroke. The piston is associated with means to utilize its movement such as an air compressor or a pump.

Abstract: A fuel pump assembly is designed for mounting in the interior of a vehicle fuel tank. The assembly includes a reserve tank and a fuel pump mounted within the reserve tank with a noise dampening cylindrical intermediate layer. An intake chamber is formed by a filter screen which is mounted in the reserve tank surroundng the inlet of the fuel pump. A vent channel is provided bypassing the intermediate layers and connecting the intake chamber with a vent conduit for venting gases from the intake chamber of the fuel pump.

Abstract: An air compressor apparatus including noise-reducing means for converting ambient air into compressed air includes an air compressor surrounded by a noise-reducing enclosure and a plurality of shock-absorbing means disposed between the air compressor and the enclosure. The enclosure includes a pair of interior baffle plates which divide the interior of the enclosure into an air inlet chamber, an air outlet chamber and an air compressor chamber therebetween. The air inlet chamber and the air outlet chamber are each open to the atmosphere at a first lower end and are each in communication with the air compressor chamber at a second opposite upper end. The enclosure further includes a fan positioned within the baffle plate between the air compressor chamber and the air outlet chamber which is operable to draw air in through the open end of the air inlet chamber across the air compressor chamber and out the air outlet chamber.

Abstract: The invention relates to an encapsulated refrigerator assembly of the type in which an integrated motor and compressor unit is resiliently mounted in a hermetically sealed casing or capsule. An oil sump at the bottom of the capsule is provided for lubricating oil. An externally disposed centrifugal separator with an oil collecting tank at the bottom thereof provides refrigerant in vapor form for the compressor and oil for the oil sump. The compressor has an inlet for receiving refrigerant vapor from the separator and the capsule has a single port connected to the separator. A connecting pipe inside the capsule provides fluid communication between the capsule port and the inlet of the compressor. Universal joint fittings at opposite ends of the connecting pipe allow for relative movement between the resiliently mounted motor compressor unit in the capsule and the relatively stationary capsule walls.

Abstract: A hermetic motor-compressor having a compression mechanism section and a driving motor section resiliently supported in a closed container. The compression mechanism part has a cylinder to the top of which are attached a valve seat cover assembly together with a valve seat member, valves and so forth interposed therebetween. The valve seat cover assembly has a base plate which projects laterally beyond the diameter of the cylinder, so as to present wing areas. A cover member which defines gas passages is attached to one side of the base plate, while suction and delivery-side silencer chambers are attached to the other side of the base plate at the wing areas of the latter. Consequently, the silencer chambers are confined within small areas between the cylinder and the base plate of the valve seat cover assembly, so as to reduce the overall size of the compressor.

Abstract: The mounting for a motor-pump housing in the bottom opening of a dishwasher chamber consisting of a one-piece elastomer sleeve formed by a large diameter radially outwardly directed top gasket portion, a frusto-conical medial portion and a smaller diameter bottom cylindrical portion. The sleeve medial portion defines with the pump housing a sump for receiving and directing water exiting the chamber and wherein the medial portion is free to flex to substantially obviate the transmission of vibrational energy to the dishwasher casing.

Abstract: A pump for a central heating system having a tubular housing and a motor for driving an axial flow impeller which is mounted within the housing, the motor having casing mounted within the tubular housing, forming a liquid flow passage between the outer surface of the casing and the inner surface of the housing, the motor being adapted to be powered by electricity supply of a frequency greater than 70 Hertz, wherein the impeller is mounted upstream of the motor, and guide vanes are mounted in the annular passage to smooth the flow of liquid from the impeller.

Abstract: A fuel pump assembly is designed for mounting in the interior of a vehicle fuel tank. The assembly includes a reserve tank and a fuel pump mounted within the reserve tank with a noise dampening cylindrical intermediate layer. An intake chamber is formed by a filter screen which is mounted in the reserve tank surrounding the inlet of the fuel pump. A vent channel is provided bypassing the intermediate layers and connecting the intake chamber with a vent conduit for venting gases from the intake chamber of the fuel pump.

Abstract: A hermetic compressor assembly is disclosed wherein a motor-compressor unit is supported in a hermetically sealed chamber so as to permit at least limited rotation thereof about an axis which may coincide with the axis of the drive shaft of the compressor. In order to limit such rotation, at least a first leaf spring member is provided affixed to one of the interior wall of the chamber and the motor-compressor unit, which member cooperates with abutment means affixed to the other of said interior wall and motor compressor unit whereby, upon rotation of the motor-compressor unit about said axis, engagement between the abutment means and the leaf spring member results in deflection thereof so as to limit such rotation.

Abstract: The invention relates to a refrigerator type motor-compressor assembly. The housing includes inner and outer tubular shaped casings with the inner casing in which the motor and compressor units are mounted being resiliently mounted relative to the outer casing. The cylinder block is rotatable with the motor shaft with the cylinder thereof extending transversely relative to the shaft. A piston in the cylinder is actuated by a pin carried by an annularly shaped member which is rotatable about a stationary, cylindrically shaped track member. The track member is eccentrically disposed relative to the axis of the motor shaft. An antechamber is provided on an end wall of the inner casing to form an isolated chamber between the inner and outer casings. The antechamber is utilized to provide for the exhausting of pressurized gas from the rotatable cylinder block.

Abstract: A liquid dispensing pump of the motor-driven flexible vane impeller type suitable for use in an automobile windshield washer system includes a housing that defines a motor chamber having a motor supporting end wall. A closure wall is fixed to the end wall and an impeller chamber having a peripheral surface is defined between the walls. An impeller is rotatable in the impeller chamber by a motor supported in the motor chamber, which has a shaft that extends through an opening in the end housing wall. Inlet and outlet passages respectively conduct liquid to and from the impeller chamber. This pump further comprises the improvement that the impeller chamber is constituted by confronting recesses, formed in the closure and end walls, that are circumferentially bounded by portions of the walls that have confronting surfaces meeting at a tight interface. The interface bounds the peripheral impeller chamber surface.

Abstract: There is disclosed herein a suspension system including a shipping stop arrangement for resiliently mounting a refrigeration motor-compressor unit within a hermetically sealed shell. The suspension system comprises a three point supporting arrangement employing a pair of laterally disposed springs, each having a single tapered portion, for providing vertical support to the motor-compressor, in combination with a single top spring for providing lateral stability. Lateral and vertical motion limiting shipping stops are also provided to prevent excessive movement of the motor-compressor, such as may occur during shipment thereof, from damaging the suspension system members. In addition, the system is capable of accommodating different size motor-compressor units in a standardized hermetic shell size by using simple spacers of different sizes.

Abstract: A blower motor mounted in a housing with the use of two end supports which act as shock absorbers and positioning devices. Each end support is formed of relatively soft flexible material and comprises a cup shaped member adapted to be attached to an end of the motor. Extending radially outward from the cup shaped member are a plurality of spaced apart legs adapted to engage the wall of the housing. Each leg comprises two spaced apart leg members which diverge outward from each other and a flexible arcuate bridge portion connecting the outer ends of the leg members for engaging the wall of the housing.

Abstract: A blower assembly includes an electric ventilated motor having a through output shaft with a blower wheel attached at each end. The motor, encircled by a pair of rubber O-rings with the blower wheels attached, is inserted in a blower housing assembly which is split along a horizontal line parallel to the motor output shaft which divides the housing assembly into an upper and lower housing. The housing assembly contains a central cavity for enclosing the motor and a cavity to either side of the central cavity for enclosing the blower wheels. The motor proximate and distal walls of the blower wheel cavities contain inlets to allow air to be drawn in by the blower wheels and the blower wheel cavities in the lower housing contain air outlets for the air to be blown out. The lower housing further contains air passages from the air outlets, to one end of the motor cavity to provide pressurized air to the motor.

Abstract: The disclosure describes flexible motor mounting members particularly adapted for vibration induced flexing movement. In illustrated forms, leaf spring mounting arms have low torsional spring constants and yet have sufficient strength to withstand shipping and handling loads for motor-blower assemblies and to permit all angle motor mounting. The free end of the lug is specifically configured to prevent deformation and tearing, and the lugs are extremely easy to mount to a blower housing simply by deflecting the mounting arms (when necessary) with finger pressure so as to align holes in the mounting arms with previously provided holes in the blower housing.

Abstract: The invention relates to an encapsulated refrigerator assembly of the type in which an integrated motor and compressor unit is resiliently mounted in a hermetically sealed casing or capsule. An oil sump at the bottom of the capsule is provided for lubricating oil. An externally disposed centrifugal separator with an oil collecting tank at the bottom thereof provides refrigerant in vapor form for the compressor and oil for the oil sump. The compressor has an inlet for receiving refrigerant vapor from the separator and the capsule has a single port connected to the separator. A connecting pipe inside the capsule provides fluid communication between the capsule port and the inlet of the compressor. Universal joint fittings at opposite ends of the connecting pipe allow for relative movement between the resiliently mounted motor compressor unit in the capsule and the relatively stationary capsule walls.

Abstract: A motor mount suitable for use, for example, in a motor driven fan assembly or the like in which the motor is secured to the fan housing. The mount includes clamps for supporting the opposite ends of the motor and is adjustable to accommodate motors having different lengths and also to fit different sized mounting bolt locations.

Abstract: A radial flow fan of short axial length and large radial dimensions and of the type having the drive motor arranged coaxially with respect to the fan wheel and at least partly inside of the fan wheel. The housing for the fan wheel and motor includes a flat metallic square plate forming an axial end face and a synthetic resinous material circumferential housing attached to the metal plate. The circumferentially extending housing portion also includes a portion defining the opposite end wall of the casing with respect to the metal plate end wall, which opposite end wall has a central opening for inlet of air. The synthetic resinous housing portion includes an exit port for radial exit of the air. The metal plate is connected with good heat conductivity with the stator of the drive motor by way of a flange of a bearing for the shaft of the drive motor and by way of a contact disc which axially supports the rotor shaft at the metal plate.

Abstract: A power vent is disclosed including a housing assembly having a base and a cylindrical, open ended shroud joined to the base and within which is supported a fan assembly. A wire frame is molded into the inner peripheral surface of the shroud to reinforce the shroud and also provide a bracket for supporting the motor of the fan assembly. A molded plastic hood including hood support brackets is securable to the shroud so that the assembly may be employed as a roof vent. In another embodiment, the base of the housing may be shaped to receive a louver assembly and the assembly may be used as a gable end vent.

Abstract: The invention relates to an encapsulated motor compressor assembly for refrigerators. An integrated motor compressor unit is resiliently supported inside the casing of the assembly on helical springs which engage the lower side of the stator laminations. The points of spring engagement are in a lower plane in which it is desired to prevent or minimize radial deflection of the motor compressor unit. This is accomplished by placing certain constraints on the design of the vertical motor shaft which has the usual eccentric crank for driving the compressor piston and a compensating weight for balancing the centrifugal effects of the crank. It was discovered that certain relationships between (1) the mass of the compensating weight and the spacing of its center of gravity from the shaft axis, and (2) the mass of the eccentric crank and the spacing of its center of gravity from the shaft axis, are in fact effective to minimize radial deflection of the motor compressor unit in the above referred to lower plane.

Abstract: The invention relates to refrigeration apparatus of the type in which a motor-compressor unit is resiliently mounted in a sealed casing. A resilient refrigerant discharge tube extends from the compressor to an outlet port in the casing. The discharge tube is made resilient to prevent noise and vibrations from being transmitted outwardly to the casing. The discharge tube has at least two convolutions in intersecting planes which are preferably at right angles to each other and are generally vertically disposed to form angles of less than 45 degrees relative to the vertical motor axis. The convolutions are preferably rectangularly shaped.

Abstract: A hydraulic transmission drive assembly having a pair of hydrostatic units mounted in a housing assembly for suspension from a primary housing and with the housing assembly supported on the primary housing by noise attenuation means including a pair of isolation mountings each of which are of a multi-layer construction with a plurality of plates for connection to either the primary housing or the housing assembly, with resilient material bonded therebetween and with mounting means extended through openings in said plates and surrounded by resilient material which is spaced from an opening in a center plate of the isolation mounting whereby axial loads result in compression of the resilient material and flexure of the plates and torsional and transverse loading results in shear of the resilient material under light loading and, under heavier loading, the resilient material surrounding the mounting means additionally acts in compression.

Abstract: A suspension system for a motor-compressor unit suspended within a hermetically sealed shell includes a plurality of rigid anchoring members secured to the motor-compressor unit at approximately the center of gravity of the mass defined thereby and to a connecting member permanently secured to the shell. Individual springs are attached to each of the anchoring members for yieldably suspending the motor-compressor unit within the shell. A retainer member is provided in spaced relation to each of the anchoring members. A resilient member is disposed in the space defined between the anchoring member and retaining member and is slightly under compression when the motor-compressor unit is at rest. The resilient member is further compressed to limit motion of said motor-compressor unit in a vertical direction, and in an angular direction about the horizontal and vertical axes of said unit.

Abstract: The invention relates to a refrigeration type motor compressor assembly in which an integrated motor compressor unit is resiliently mounted. The motor stator includes a stack of rectangularly shaped laminations with bevelled corners. Stator bolts extend upwardly through the laminations with the bolt heads projecting downwardly from the lower surface of the laminations. The resilient suspension system includes four generally cone shaped spring retaining abutment members attachable from below to the four corners of the stack of laminations. These abutment members have recesses for receiving the bolt heads and collars which extend outwardly beyond the bevelled corners of the stack of laminations. The collars are abuttingly engageable with the inner surface of the casing during lateral movement of the spring mounted motor compressor unit to provide bumper protection for this unit.

Abstract: A vibration damping elastic supporting device for the hydraulic pump of an electro-hydraulic power unit which is mounted in the machine base of a production machine and in which several strut rods, forming a rigid pump supporting structure, extend axially from a clamping flange of the electric motor to pump support points in the vicinity of a radial plane through the centroid of the pump, the strut rods extending through supporting bores of the pump body, or of an attached adaptor body, holding and axially clamping a pair of elastomeric collar sleeves between each rod extremity and a supporting bore.

Abstract: A sealed type motor-compressor having such structure that a refrigerant gas is directly led from an intake pipe to a cylinder, is described herein. The sealed type motor-compressor is characterized in that between an intake pipe opening within a sealed housing and a gas inlet portion of a cylinder, is provided a connecting member which can slidably follow a relative movement in every direction of an internal component of said motor-compressor.

Abstract: Motor mounting system is designed so that the torsional mode resonant or natural frequency is less than twice the frequency of the motor power supply divided by the square root of two (.sqroot.2). The illustrated mounting arrangements are "soft" with respect to torsional mode vibrations, and yet are "stiff" with respect to axial and tilting mode vibrations. In one arrangement, lugs are formed preferably from a tough and strong sheet or strip material with means which may be in the form of tuning apertures being provided for promoting flexure without objectably compromising lug strength for axial loading and with the tuning means preferably selected so that the cumulative effective spring constant of the mounting lugs will be less than the quantity (2.84.times.Ip.times.10.sup.5).

Abstract: The motor/pump assembly for a dishwasher is inserted into the dishwasher tank and then into an opening in the tank bottom until a gasketed flange on the assembly seats on the edge of the opening. Wire springs are then hooked onto the assembly beneath the tank, and toggles thereon are rotated to cam and tension the springs to apply a predetermined, substantially constant force between the tank and the motor/pump assembly.

Abstract: An improved motor mount assembly for fan motors includes a plurality of flexible cables connecting the end plates of the motor housing with a mounting bracket. The motor mount assembly may be used in combination with a bladed fan or a blower wheel fan. The cables retain the blower motor in proper position while providing sufficient flexibility to damp out vibrations which occur due to the operation of the fan motor. A combination sheet metal air discharge grill and fan motor mount assembly is also disclosed.

Abstract: In a closed-type compressor with an electromagnetic reciprocating drive, reliable and stable collimation of the electromagnetic driving part with the compressive pumping part is easily established by a snug engagement of fitting seats provided in the coupling plane of the two parts and lubrication of the piston and its related part is effected by a built-in type lubrication mechanism utilizing the flow of the gas returning from the given circulation system with simplified construction as well as in the case of compressors with rotary drive, the compressor being preferably used for cooling systems.

Abstract: There is disclosed an axial flow fan assembly having a vibration dampener carried by the fan supporting means which extends across the fan ring.

Abstract: The machine base of an injection molding machine is constructed to form a hydraulic tank; the hydraulic power unit is mounted in a vertical wall of this tak so that the pump is positioned inside the tank while the electric motor remains outside. Mounting flanges clamp the power unit against the tank wall, with vibration-absorbing resilient compression members interposed between the flanges and the wall. The latter is reinforced around the opening by a supporting and centering profile in the area of flange overlap.

Abstract: A method for making a scroll type housing for a centrifugal blower wherein a flat discharge plate is provided with a rectangular discharge opening and a pair of lugs are spaced from each of a first pair of opposing parallel edges of the opening. Narrow upstanding flanges along the edges are spaced slightly from the lugs and the second pair of opposing edges of the opening are each provided with a narrow elongated portion which is offset to a shallow depth in the direction of the flanges. A scroll member is provided in an elongated generally flat flexible sheet of material with a narrow end flange formed integrally along each end edge. The flanges project generally in the same direction and the member also has a reverse bend adjacent one end approximately in the form of a desired final configuration of a "cut-off" section of the housing. Three lanced openings are spaced apart along each side edge of the member.

Abstract: The invention relates to refrigeration apparatus of the type having a casing which contains an electric motor and reciprocating compressor means. This type of apparatus is subject to creating undesirable vibrations and noises, the reduction of which is the object of the invention. This is done by adding additional mass to the casing which is equal to fifty per cent or more of the mass of the casing. The correspondingly greater mass inertia has the effect of causing the casing to absorb vibrations emanating from the interior of the casing to a lesser extent than before.

Abstract: A high-speed rotary vacuum pump has a compression chamber which is spaced from the walls of a housing by at least one body of acoustic insulation material which acts to absorb noise, to position the chamber with respect to the housing, and to form a fluid-tight seal between the chamber and the housing in the region where the rotary drive shaft of the pump projects from the compression chamber. The drive shaft and the gas inlet and outlet ducts are also acoustically insulated.