Abstract: A valve which comprises a closure member adapted for attachment to the container. The closure member defines an aperture therein. A hollow grommet of flexible material having a flange portion to one side of the closure member and a tubular portion extends through the aperture in the closure member. A valve rod having at one end a flange engaged with the underside of the flange of the grommet and a hollow stem portion extending through the grommet to protrude therefrom such that upon tilting of the valve rod relative to the closure member the flange of the valve rod parts from the underside of the flange of the grommet to uncover a radial hole in the stem portion through which pressurized fluid can pass into the hollow stem portion for dispensing. A gallery or annular passageway is provided in between the grommet and flange of the valve rod and arranged to admit pressurizing gas through the closure member into the container when the valve rod is tilted.

Abstract: A separator for continuously separating a mixture of immiscible liquids of differing densities into the constituents of the mixture including a vessel, a first upper outlet for the lower density constituents, a second upper outlet for the higher density constituents, an inlet in the vessel for the mixture located below the outlets, a conduit interconnecting the vessel above the inlet and the first outlet and a further conduit opening into the vessel below the inlet and connecting the interior of the vessel and the second outlet.

Abstract: To achieve increased critical speeds in turbines, pumps and other machines by limiting overhang while eliminating secondary sealing components, a face seal is provided for a rotatable shaft. The face seal includes an annular sealing ring formed of a rigid material and having a sealing surface adapted to be disposed in a plane substantially transverse to the rotatable shaft. The face seal also includes a static seal-carrying member formed of a rigid material and spaced from the annular sealing ring at a location remote from the sealing surface. Additionally, an elastomeric seal is disposed between the annular sealing ring and the static seal-carrying member in integrally associated relation.

Abstract: A centrifugal pump having a self-regulating impeller discharge shutter which controls the size of flow passages from the pump impeller to the volute according to the flow demand on the pump. When the pump is operating at the design flow rate, the flow passages can be nearly fully open and, when there is a lesser demand, the area of the flow passages can be correspondingly reduced to improve stability and minimize the temperature rise within the pump. The position of the impeller discharge shutter is automatically controlled by exposure to the static pressure at the tip of the impeller and the pressure in the volute which exert oppositely-acting forces on the impeller discharge shutter.

Abstract: A drill bit tip construction wherein the cutting edge at the tip of the drill bit is arranged to cause fragmentation of the chips being removed from the work metal during the drilling operation. The cutting edge of the drill bit at the drilling tip is made to be wavy and, in the illustrated embodiment, is defined by a plurality of segmentally cylindrical grooves extending parallel to the longitudinal extent of the flutes at the tip. In the illustrated embodiment, the grooves have a radius of approximately 0.05" and a length substantially greater than the radius to permit repeated resharpening of the drill bit with resultant reforming of the desired wavy cutting edge in the resharpened tip. In the illustrated embodiment, the cutting edge is formed in an insert secured as by brazing in a diametric slot at the tip. The insert may be formed of a carbide material having optimum cutting characteristics. The grooves are provided in the insert by use of an electric discharge wire cutting machine.

Abstract: A method of tying a balloon having an inflatable bulb bounding a chamber, a flexible neck with a passageway in communication with the chamber, and a filling opening in the neck through which a fluid can be directed into the neck passageway and inflation chamber. The method contemplates the steps of providing a device with a housing having first and second elongate legs projecting therefrom in substantially parallel alignment, placing the neck of the balloon between the first and second legs, situating a length of flexible line across the neck in lengthwise alignment with and adjacent to one of the legs, twisting the legs about their length to thereby roll the balloon neck against itself and surround the line, and tying the line against itself so that the neck is embraced by the line. The invention is also concerned with a hand tool device for carrying out the method.

Abstract: A bi-directional DC/DC converter includes a first switch coupled to a first input/output of the converter, a first input/output energy storage element coupled to the first input/output of the converter, a second input/output energy storage element coupled to a second input/output of the converter, an intermediate energy storage element coupled between the second input/output and the first switch and a second switch coupled to the intermediate energy storage element and to the first switch. A pulse width modulator operates the first switch between on and off states while the second switch is maintained in an off state to operate the converter as a buck converter, during which time the power is transferred from the first input/output to the second input/output.

Abstract: According to the invention, a single structure is provided to both produce pressure in and evacuate a space. The inventive device has a barrel with a chamber and separate vacuum and pressure passageways in communication with the chamber. A check valve is mounted in the vacuum passageway to permit flow of air into the chamber through the vacuum passageway but to prohibit flow out of the chamber through the vacuum passageway. A second check valve is mounted in the pressure passageway to permit flow of air out of the chamber through the pressure passageway but to prohibit passage of air through the passageway into the chamber. A plunger is movably mounted in the chamber to selectively develop pressure in the chamber and pressure passageway upon being moved in a first direction and to draw air from the chamber and evacuate the vacuum passageway upon being moved opposite to the first direction.

Abstract: A refrigeration apparatus having a plurality of containers removably stored on the inner liner portion of the refrigeration apparatus door. A number of different forms of the containers is disclosed. The containers may be chosen by the user to have different desired heights and capacities commensurate with the user's needs. The containers are preferably formed of materials permitting their removal from the refrigerated environment to heating or serving environments, as desired. Releasable locking structure is provided for retaining the containers in association with the door, notwithstanding the normal movement thereof in the ordinary use of the refrigeration apparatus. In one form, shallow containers are utilized as covers.

Abstract: A servo system having a circuit for developing an error signal representing the deviation of a load condition from a desired condition represented by a command signal and forward and feedback paths at least one of which includes an impedance therein represented by a transfer function comprises a limiter receiving the command signal and connected to the error signal developing circuit for controllably limiting the command signal wherein the limiter has a variable saturation point and a circuit coupled to the limiter and to the impedance for controlling the saturation point of the limiter in accordance with the transfer function of the impedance to enable fast response without damage to an output device controlled by the servo system.

Abstract: A check rail lock having a housing with an interior space which rotatably mounts a shaft connected to a handle and a cam and with stop members associated with the cam and the housing for limiting rotation of the cam between locked and unlocked positions. The cam is releasably held in either of these positions by mounting of a spring washer on the shaft to which the cam is fixed, and with the spring washer and the housing having coacting detent structure which releasably holds the cam in either the locked or unlocked position. The spring is generally concave for predetermined spring loading and has planar sections with detents to assure good engagement with detent notches on the housing.

Abstract: A refrigerator cabinet includes an outer shell having a transverse flange terminating in a channel generally parallel with the flange and opening transversely inwardly. A liner is disposed within the shell and defines a storage space which is divided into two compartments by a compartment separator. A center rail defines a forward wall for the separator. A pair of brackets each has a first portion shaped to conform to the channel and a second portion shaped to conform to ends of the center rail. An adhesive material is disposed in opposite sides of the channel adjacent the compartment separator and adheres the brackets to the cabinet. Fasteners are provided for securing brackets to the opposite ends of the center rail. Accordingly, a refrigerator cabinet is provided which utilizes an adhesive as the sole means for retaining the center rail brackets to the cabinet structure.

Abstract: Increased turbine inlet temperatures and/or extended life of turbine rotors in gas turbine engines is achieved by locating a plurality of passages 50 that extend axially in the disc 46 and turbine blades 32 of a so-called monorotor. The passages 50 have inlets 54 between compressor blades 18 on the rotor 20 and exit openings 52 in the free edges 38 of the turbine blades 32. Thus, air compressed by the compressor blades 18 is flowed through the passages 50 to cool the rotor 20.

Abstract: A package including a base portion formed of a semi-rigid material so as to be self-supporting. The base portion has a plurality of receptacles, each of which is individually separably joined to all adjacent receptacles by a connecting rim flange. The receptacles are disposed in a plurality of columns and rows in the base portion and the receptacles each have an opening defined by the connecting rim flange and extend from the connecting rim flange on one side thereof. The package also includes a cover portion joined to the base portion for entirely covering the receptacle openings including a plurality of cover segments disposed in a plurality of columns and rows. The cover segments each cooperate with the connecting rim flange of one of the receptacles and each are individually separably joined to all adjacent cover segments.

Abstract: A test device arranged to be electrically connected to a plurality of terminals provided in a control mechanism of an ice maker apparatus. The test device includes a plurality of switches and indicator lamps connected to the control mechanism circuit for selective determination of causes of malfunctioning of different electrical components of the ice maker apparatus. The control includes a switch for initiating a cycle of operation of the ice maker apparatus and an indicator lamp for indicating the presence of voltage in the control mechanism circuit. The test device is arranged to permit observation of the rotational position of the control mechanism drive and, more specifically, the rotational position of the cam driven thereby to indicate to the service person the point in the cycle of operation reached by the mechanism.

Abstract: A power transmission belt having a flexible chain link midportion 11 defining a longitudinally continuous belt structure having opposite laterally outer side portions. Mounting elements 14,15 protrude from the side portion at spaced intervals longitudinally of the belt and side elements 16 are freely adjustably mounted one each to the protruding mounting element portions 15. The side elements define an outer surface for engaging the sidewall of a drive pulley V-groove. The invention further comprehends the provision of positioning elements 26 for retaining the side elements on the mounting elements, with the outer surfaces 17 of the side elements generally parallel to the V-groove sidewalls of the pulley for facilitating facial engagement of the side elements with the sidewall of the pulley groove when brought thereinto.

Abstract: A reactor for waste water including a vessel 10 having two elongated outer channels 26, 28 sandwiching an elongated inner channel 30 with all the channels 26, 28 and 30 being connected to each other at both opposed ends thereof, a gate 64 at one of the ends 18 and movable between a first position isolating the channel 26 from the channels 28 and 30 and a second position isolating the channel 28 from the channels 26 and 30, rotors 32, 34 for each of the channels 26, 28 for aerating waste water in the vessel 10 and for causing the waste water to flow in the corresponding channels 26, 28 as well as the inner channel 30, and a pair of effluent outlets 98, 100, located at the end 18 and spaced to be on opposite sides of the gate 64, each selectively operable to withdraw effluent from the the outer channels 26, 28 on the associated side of the gate 64.

Abstract: An improved turbulator and conduit structure for use in heat exchangers. An elongated tube through which fluid to be subject to a heat exchange process is provided with a first outer winding within the tube in substantial abutment with the inner wall of the tube and a second inner winding at least partially within the first winding. The pitch of the first winding is different from the pitch of the second winding. Consistent heat exchange at extremely low Reynolds numberes is obtainable with the structure. Also disclosed is a method of making such a turbulator and conduit structure.

Abstract: A snap stud usable in window hardware, such as window operators and window hinges, for releasably pivotally interconnecting a pair of members. The snap stud has a stud extending from a first of the members and provided with an external peripheral groove which mounts a C-ring of spring music wire. The C-ring has a retention position partially extending beyond the periphery of the stud for overlying a second of the members and a compressed release position substantially entirely within the periphery of the stud, with the movement of the C-ring to the compressed release position occurring automatically in assembly and disassembly of said members.