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 that is thicker and substantially stronger and stiffer (even in the radial vibration mode) than would usually be desirable from a torsional vibration isolation standpoint, but means are provided for promoting flexure in the vicinity of the parts of the lugs that will be subject to the most flexure or deflection. These flexure promoting means may be in the form of tuning apertures formed along a preselected, longitudinally extending neutral axis of each lug so that the strength of the lug will not be objectionably compromised for axial loading conditionss.

Abstract: A method of manufacturing a torsionally flexible vibration isolating device adapted for mounting an electric motor. The device includes a flexible mounting arm having a motor end portion with projection accommodating means therein and a pair of supporting means for engagement with the motor end portion. In this method, one supporting means is formed with a pair of projections extending therefrom in different directions. The motor end portion is interposed between the supporting means, and one projection is located in predetermined spaced relation with the motor end portion while the other projection is located in the projection accommodating means so as to interface with a part of the other supporting means. The other projection is then deformed into displacement preventing with the other supporting means at least adjacent the interfacing part thereof.Motor mounting arrangements, devices for mounting an electric motor, other methods of manufacturing, and methods of mounting are also disclosed.

Abstract: An assembly includes a band which is adapted to encircle and tightly clamp motor housings of different sizes, and mounting arms located on the band extend radially outwardly. The arms are adapted for connection to a mounting surface and provide isolation of torsional motor vibrations. Each arm includes a slot to receive the band, and an end clamped between the band and motor housing. The band has openings that receive and locate tabs on the arm ends. A band extension enables enlargement of the band to accommodate a larger motor. The band openings are arranged in sets to permit predetermined angular spacing of the arms for different band circumferences. Thus, depending on the dimensions of the arms, a single band and arm kit may be used to mount motors of two different diameters in a given blower installation with proper angular alignment of the mounting arms and blower housing bolt holes.

Abstract: Any suitable strip material, including cold-rolled steel, is stamped to establish first and second laterally extending portions interconnected by a connecting segment, with a locating hole located midway between the free or distal ends of the laterally extending portions. The connecting segment is sized so that no dimension of the connecting segment as measured from the center of the locating hole exceeds a preselected dimension corresponding with the diameter of a shaft with which the adapter is to be used. The central connecting segment may or may not be symmetrically positioned relative to a center reference line extending longitudinally along the laterally extending segments. One or more laterally extending marginal edges of the laterally extending sections may be tapered in order to permit overbending or overforming of the sheet material.

Abstract: A dynamoelectric machine end shield for closing the ends of a cylindrical shell, the end shield comprising a pattern of valleys and plateaus to create a reinforcing rib pattern that provides increased strength. The end shield, which may be formed from thin cross section sheet material, provides a close fitting rabbet that does not require machining and provides a structure that will not transmit possible distortion of the lighter gauge material from the mounting bolts to the bearing. Because of the additional strength afforded by the reinforcing rib pattern, radially inward displacement of the extended portions of extended clamp bolts also is minimized.

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: A dynamoelectric machine termination arrangement is formed at least in part by a portion of a molded insulation body partially covering a core. The termination arrangement includes a connection receiving and retaining portion of the insulation body, and an interconnected lead wire and coil lead. The interconnection is firmly held in place by a wedging member. The termination arrangement provides both strain relief and protective insulation for the interconnection.

Abstract: Seal arrangement to be used with dynamoelectric machines having a bearing and shaft combination. Seal is formed from resilient material in a sinuous shape providing a radial clearance for the rotatable shaft. Portion of seal mates with rotating seal engaging member and provides a sliding surface which is self-lubricating. Sinuous shape of seal allows deflection under pressure to lessen sliding surface pressure and conforms to variations in shaft alignment.

Abstract: Inductive device, more particularly, dynamoelectric machine termination arrangement is formed at least in part by a portion of molded insulation partially covering a core. The termination arrangement includes a connection receiving and retaining portion of the insulation, interconnected lead wire and coil lead. The interconnection is firmly held in place by a wedging member. The termination arrangement provides strain relief and protective insulation for the interconnection. A method of assembling lead wires to an inductive device is also disclosed.

Abstract: A pump having centrifugal and vortex impellers mounted on a common rotor member. Impellers are mounted on opposite sides of rotor and make maximum use of rotor diameter. Fluid follows a serial path through the centrifugal and vortex impellers. The vortex impellers rotate in a vortex channel divided into one or more sections, plural sections of which may be arranged in parallel flow relation. The casing surrounding the rotor member may form the necessary inlet, outlet, and internal fluid channels for the pump.

Abstract: Lubrication system includes lubricant reservoir that contains an extrudable base material impregnated with lubricant, such as oil. Motor parts, including the reservoir defining parts, are readily assembled with one another and retaining means is provided that permits the efficient transfer of oil to extrudable base material, but prevents inadvertent movement of base material away from a predetermined locale in reservoir. In one illustrated form, such means are in the form of a plastic member or basket having perforations therein of a size to restrict the movement of extrudable base material therepast and yet promote the movement of oil into the predetermined locale. In another form a retainer member is fabricated from a lanced and expanded metallic material that forms a perforated base material retainer or basket.