Abstract: An absorption chiller having a protection system for preventing the chilled water in the evaporator tubes from freezing in the event the water flow through the tubes closes down while the machine is running. A sensor in the evaporator heat exchanger is arranged to detect when the water flow through the heat exchanger tubes closes down and signals the machine controller. The controller, in turn, shuts down the machine and opens a valve in a feed line to the evaporator to deliver a high temperature working fluid from another section of the machine to the evaporator to maintain the temperature in the evaporator above that at which the water in the tubes freezes.

Abstract: An air handling unit (AHU) includes a frame structure and panels that are assembled to provide ducting for handling air. Some panels include a living hinge which is one-piece with a panel perimeter. The living hinge is mounted onto side pieces of the frame structure and latched with a latching mechanism. A hollow compressible seal is attached to the side pieces such that closing and latching the hinged panels provides a sealing fit between the hinged panel and the frame structure.

Abstract: The compressor of a transport refrigeration system is divided into two sections, with each section having a suction inlet. The refrigerant vapor from the evaporator is passed to one of the suction inlets, whereas the refrigerant vapor from a subcooler circuit is passed to the other suction inlet. A valve is operated to selectively insert or remove the subcooler as capacity requirements vary. In one embodiment, a six cylinder reciprocating compressor is used with five cylinders compressing within a first section, and a single cylinder compressing in the other section containing the subcooler circuit.

Abstract: A semiconductor device that generates a clock which is synchronized with a reference signal stably and with fixed synchronization accuracy, and enables to deal with an abrupt variation in the reference signal. This semiconductor device includes N stages of delay elements each delaying an external clock by 1/N clock (N: an integer that is two or larger); a phase comparator for comparing the phase of a clock that has been delayed by the N stages of the delay elements with the phase of the external clock one clock late; a controller that receives a phase difference detected by the phase comparator and controls respective delays of the delay elements; and a selector for selecting a delayed clock having the closest phase to the reference signal from delayed clocks which are generated by the N stages of the delay elements, respectively, and shifted in phase with each other by 1/N clock.

Abstract: A valve assembly for fluid container under pressure, comprising a valve cup sealingly attachable to an opening of the container, the valve cup having an opening, a valve body of plastic material attached within the cup opening and having a through going axial passage and a sealing surface, a valve piston of plastic material guided within the passage, co-acting with the sealing surface and having a lower portion, spring means co-acting with a valve body which presses the valve piston against the sealing surface, characterized in that a cap is connected to the valve body designed to allow flow or fluid from the exterior of the cap to the interior thereof, a preferably axial projection being formed to the bottom facing upwardly towards the valve body, the bottom projection telescopically co-acting with the lower portion of the valve piston, the lower portion and/or the bottom projection having a spring portion adapted to generate a spring force by which the piston is pressed against the sealing surface.

Abstract: A process for identifying an embossed image of a coin in an automatic coin tester, in which a coin is moved to an image receiver and a light source, the image receiver picks up at least one image of the embossed image of the coin, and a validation device compares the image to a first reference pattern to find out whether the first reference pattern is contained in the image which was picked-up. If the first reference pattern is contained in the image, the validation device determines whether a second reference pattern is contained in an area the position of which is determined relative to the position of the first reference pattern, the validation device producing a genuine coin or counterfeit coin signal for the coin depending on the coincidence of the image with the reference patterns.

Abstract: An expandable media filter structure is composed largely of biodegradable materials and is environmentally disposable. A plurality of pleated panels are interconnected at their edges so as to be collapsible for storage and shipping purposes but expandable for installation and use. A plurality of ribbons are ultrasonically welded to each of the panels edges, with the ribbon portions between edges being of substantially equal lengths, thereby maintaining equal spacing between the panel edges when the filter is in the expanded condition but allowing an each collapsing of the filter for storage. Forming a part of the nondisposable framework for support of the disposable filter are a pair of end plates which are C-shaped in cross section for slidably receiving an end panel of the media filter therein. The depth of the C-shaped channel is sufficient to allow a plurality of the unexpended pleats to be stored therein so that a single sized filter may be used for various sizes of cabinet openings.

Abstract: A vaned diffuser for a centrifugal compressor has provision for selectively adjusting the pitch of the vanes in order to accommodate variable load conditions. Each of the vanes is rotatable about a pivot pin near its leading edge and is engaged with an actuation member near its trailing edge. The actuation members are attached to a common ring which can be selectively rotated to move to the vanes in unison. The ring is supported by rollers at its outer periphery and is positioned at the outer periphery of a diffuser wall such that there is no forward facing step projecting into the flow stream. A throat is defined between adjacent vanes, and the pivot pin for each vane is located downstream of the throat on the pressure side of the vane to reduce turbulence in the flow at the throat.

Abstract: In the present invention, a bar code reader captures an initial image map corresponding to a scene, then subjects the initial image map to an interpolation step wherein values for constructed pixels positionally intermediate pixel values of the initial image map are interpolated as a function of the initial image map pixel values bordering the constructed pixels. After an interpolated image map is constructed, the interpolated image map is subjected to a binarization step wherein grey scale pixel values of the interpolated image map are converted into binary (1 or 0) pixel values by way of a thresholding process. In the thresholding process, grey scale pixel values are compared to a threshold in the grey scale range, then set to 1 if they are above the threshold and set to 0 if below the threshold.

Abstract: A two-piece cable connector includes a connector body and a threaded nut or compression fitting that attaches at a first end of the connector body. Two series of rings are interleaved with tapered sides adjacent each other, with the rings being fitted inside the connector body outside a portion of a mandrel. Two plastic rings are fitted adjacent the series of rings at the first end of the connector body. The threaded nut or compression fitting drives the plastic rings against each other and the inboard ring against the series of rings in wedging engagement, thus creating an interference fit among the grounded connector body, the series of rings, a ground sheath of a coaxial cable, and the mandrel. The two plastic rings from a seal protecting the inside of the cable connector from the environment.

Abstract: A steering angle of an elevator sheave on a shaft is adjusted at installation and subsequently during maintenance by one of several embodiments. In one embodiment, a bolt with a jam nut is adjusted to position the shaft precisely. In another embodiment, a tee bracket is anchored to a hoistway wall, and a jack bolt with shims is used to adjust the vertical placement of the long beams that support the elevator car frame and therefore the shaft.

Abstract: A de-icing and anti-icing composition in the form of an aqueous solution which includes a carbohydrate, a freezing point depressant and an anti-corrosion agent in the form of phytic acid and its salts.

Abstract: A bustop air conditioning module is provided with an evaporator section having a return air opening and a condenser section having a fresh air opening. A mixer opening is provided between the fresh air opening and the evaporator coil, and a flap is selectively positionable to cover or uncover the mixer opening to allow a selective amount of fresh air to be passed to the evaporator coil. Simultaneously, the flap also to selectively block a portion of the return air flowing to the evaporator coil and at the same allow a portion of the return air to be exhausted from the system.

Abstract: A pressure measuring device includes a housing which retains a pressure responsive element interconnected to an indicating member that moves relative to a dial face when a change of pressure is detected. A peripheral bumper is mounted to the housing exterior, the bumper including an extending portion which creates a discontinuous path for shock or impact loads applied to the bumper relative to a continual movement mechanism. The housing can further include a discontinuous region imposed in an engagement portion of the housing, the engagement portion permitting the housing to be directly attached to an inflatable blood pressure sleeve.

Abstract: A furnace heat exchanger with multiple parallel flow passages wherein at least one flow passage has a cross-sectional shape which transitions from one form to another in a gradual manner so as to reduce the occurrence of stress therein. In one embodiment, the transition is from an oval shape to a wavy shape.

Abstract: A filter assembly for use in the CATV industry includes a circuit formed by components mounted upon at least one circuit board with a plurality of paths or traces on the board connecting each section of the circuit to a member at ground potential. The grounding member may be a grounding bus on the circuit board which is in contact with a housing wherein the circuit board is mounted, or the paths may extend from a circuit component to contact the housing directly. The paths are kept to a very short length, preferably not more than 2.5 millimeters and in no case longer than 5 millimeters. This avoids the presence of inductive and/or resistive parasitics in the paths, thereby avoiding the degradation of performance typical in comparable prior art filter circuits, particularly at higher frequencies, e.g., above about 300 MHz. In the preferred embodiment grounding buses in the form of elongated strips extend along opposite edge portions of the board.

Abstract: An electromechanical linear actuator that contains an electric servo motor mounted within a compact housing. A thermally conductive path of travel is provided to efficiently transfer heat out of the housing into the surrounding ambient. A further mechanism is provided for holding the stator windings of the motor in undisturbed contact with the inner wall of the housing when the motor is subjected to thermal stress. The motor is arranged to linearly position a push rod through means of a ball screw unit. The ball screw nut and the push rod ride on bearings within guideways to insure that the push rod tracks along a linear path of travel.