Abstract:
The present disclosure relates to a particulate feeding apparatus for applying particulate, such as super-absorbent materials, to a substrate, such as a fibrous web. The apparatus may include a feeder tube for the powder and a rotary gate valve, including one or more holes, which may then intermittently feed particulate to an eductor or venturi nozzle which is located in an air stream. The rotary valve provides an intermittent supply of particulate to a relatively low pressure zone at the nozzle formed by the venturi action of the passing air stream and the particulate may be distributed precisely where desired. A process for delivering powder to a substrate in precise amounts and distribution patterns is also disclosed.
Abstract:
A motor pump (10) includes a pump head (22) for pressurizing a fluid and an electric motor for driving the pump head. Within the pump head, radial forces produced in two symmetrical pumping zones are balanced against each other to reduce stress and increase efficiency. High pressure fluid exits the pump and follow a flowpath through the motor air gap, through an end bearing carrying a distal end of a hollow pump rotor shaft, and returning to the pump head by way of the hollow rotor shaft (44) . The motor rotor shaft (44) is axially movable with respect to the pump head, which effectively floats the motor rotor in high pressure fluid. A motor stator barrier (56) can inhibits fluid flow into the motor stator (90) , and a rotor barrier (112) can inhibits fluid flow into the motor rotor. The rotor barrier can is efficiently attached to the rotor shaft in such a way as to stiffen the shaft and increase its bending resistance. The walls of the stator barrier can are thin and expand under fluid pressure to make contact with and find structural support from the stator laminations and motor endshield. Overheat conditions within the motor, as well as the pump head, are detected by positioning a heat sensing switch (130) within the motor adjacent the pump head (22) to shut down the motor (14) when an overheat condition is detected.
Abstract:
A pump includes a coaxially integrated pump relief valve element (50) of high density polymer material that seats against a hard metallic sleeve (32). The sleeve (32) is pressed into a first counterbore (22) around the relief flow channel (20) with an interference fit. That axial end of the sleeve bearing the valve seat face projects, for a substantial proportion of the sleeve length, beyond the first counterbore shoulder into a second, larger diameter counterbore space (28) to provide an annular space (30) around the outside diameter surface of the sleeve to free the seat face end of the sleeve from direct structural restraint.
Abstract:
A side-mountable liquid level sensor (10) utilizes a rubber sealing grommet (120) to temporarily hold the buoyant member (80) within the cylinder (132) of the liquid container (7) opening (3) to facilitate assembly. The buoyant member (80) has an open slot (84) with cooperating limit structure (54,56,100,102) on the buoyant member (80) and sensor rod (14) to facilitate manufacture.
Abstract:
A l'intérieur d'un compresseur fermé hermétiquement (10), un ensemble en faisceau assure la connexion à un joint métal-verre à trois broches de sorte que l'énergie puisse atteindre le moteur (12) situé dans le compresseur (10). Les parois du compresseur (10) sont fermées autant que possible sauf au niveau des ouvertures prévues pour les fils s'étendant depuis l'ensemble en faisceau (28) et pour des broches (15) partant du joint métal-verre (16) et se projetant dans l'ensemble en faisceau (28). Chaque broche (15) comporte une bague en céramique (21) qui est entourée par une collerette (40) s'étendant depuis la surface de l'ensemble en faisceau. La configuration de la bague (21) et de la collerette (40) multiplie au moins par deux la longueur du parcours qu'un arc doit suivre s'il existe un arc entre les broches.
Abstract:
A method and apparatus for injection molding articles from a thermoplastic or similar material. A plurality of molds 46 are mounted on a turntable 23 and are indexed to selected positions as the turntable rotates about its axis of rotation. Radial slots 36 divide the turntable into sectors 37, each having a mold thereon. A clamping mechanism is provided which successively deflects each sector slightly from the plane of the turntable in order to precisely align the mold thereon with an injection nozzle 106 and then securely clamps the halves of the mold together while the injection nozzle injects moldable material into the cavity in the mold. Interchangeable cavities with different size and shape characteristics are provided in the injection molds and associated with each mold is a resettable indicator 44 designating the particular type of cavity presently installed in that mold. A sensor unit 141 responsive to the indicators provides a control unit with an indication of the characteristics of the cavity in each mold when it is aligned with the injection nozzle and the control unit adjusts the parameters of the injection operation to correspond to those characteristics. In one embodiment, two injection nozzles are provided and an annulus is inserted into each mold cavity to separate the cavity into two portions, each of the nozzles injecting moldable material into a respective one of the cavity portions.