Abstract: A method and apparatus for making a connection to or between one or more modules in a microwave communication system includes a first module having a plurality of contact pads mounted on a surface adjacent one edge of the module; optionally a second module having a plurality of contact pads mounted on a surface adjacent a confronting edge of the second module; a contact assembly including a housing and a plurality of resilient contacts disposed within the housing, each contact having at least a first and optionally a second contact surface aligned with and connected to the contact pads on the first and second modules respectively; and a plurality of screws or the like for anchoring the housing to the first and optionally the second module and bridging the gap between them, the housing arranged to deform the plurality of contacts to urge them into resilient engagement with the contact pads on the modules.

Abstract: An apparatus for treating a secondary treated wastewater effluent. The apparatus comprises an anoxic first zone for accepting the secondary effluent wherein the first zone includes heterotrophic bacteria, a carbon source, and an outlet structure including a limestone aggregate. The apparatus further comprises a second zone including an entrance structure that is in fluid communication with the outlet structure and an exit structure in fluid communication with the second zone. The exit structure includes a cationic exchange medium wherein the exit structure discharges the effluent to a disposal mechanism such as a subsurface disposal field.

Abstract: A surface mount balun includes a first stripline segment having a first and second end, a first balanced port connected to the first end, and a second balanced port connected to the second end, a second stripline segment overlapping and coupled to the first stripline segment, and having a third end adjacent to the first end of the first stripline segment and a fourth end disposed approximately adjacent to the center of the first stripline segment, a third stripline segment overlapping and coupled to the first stripline segment, and having a fifth end adjacent to the second end of the first stripline segment and a sixth end disposed approximately adjacent to the center of the first stripline segment, and a third, unbalanced port connected to the sixth end of the third stripline segment.

Abstract: A balun includes first and second symmetrical couplers, preferably first and second backward wave couplers connected to form a balun having an unbalanced port and a balanced port. More specifically, a balun in accordance wit this invention includes first and second backward wave symmetrical couplers each having an input port, a direct port, coupled port, and an isolate port in which the input port of a first coupler is connected to an input port of the second coupler, and the isolated port of the first coupler and the direct port of the second coupler are connected to the balanced ports of the balun respectively.

Abstract: An improved backpack sprayer, comprising a supply tank, an expandable accumulator, a pump mechanism, an intake valve, a discharge valve, and a spray wand with a nozzle. The supply tank is designed to hold fluids, such as insecticides, herbicides, water sealants, etc. The expandable accumulator is preferably an elastomeric bladder, the function of which is to accumulate fluid from the supply tank under pressure. The volume of the bladder expands as pressurized fluid enters from the pump mechanism. As with most backpack sprayers, the pump mechanism is positioned adjacent to the bottom of the supply tank and is in fluid communication with the tank. The function of the pump mechanism is to pump fluid from the supply tank into the bladder. An intake valve, associated with an inlet opening of the bladder, enables a unidirectional flow of liquid from the pump to the bladder. Discharge of fluid from the bladder also occurs through the inlet opening upon the opening of a discharge valve.

Abstract: An item of merchandise is mounted for visual and tactile inspection by shoppers in a retail setting upon a support member which is attached to a fixed support conventionally present in the store. Two types of support members, for alternative use, are disclosed. A first of the support members includes openings for passage of screws into a vertically disposed surface such as a pegboard. The other support member includes a U-shaped bracket having outwardly directed flanges for engagement with the spaced channels of a conventional, horizontally disposed track member on the front of a store shelf, or the like. A bracket affixed to the merchandise item may be attached to either of the first and second support members, and the rotational orientation of the item may be selectively varied in accordance with its height above floor level.

Abstract: A ground fault circuit interrupter comprises a transformer having a saturable core; a secondary winding on the core; an integrating detector coupled to the secondary winding; and a pulse stretcher connected between the secondary winding and the differential detector for stretching high voltage short duration pulses sufficiently to allow them to be detected by the detector.

Abstract: A pump sprayer is disclosed for dispensing fluids such as insecticides and herbicides. The sprayer comprises a supply container which holds the fluid to be dispensed, a manually-operated piston pump, a pressure vessel or accumulator, and a manual control valve for controlling fluid dispensed through a spray wand. The accumulator includes an elastomeric bladder which is adapted to accumulate fluid from the pump and to deliver the fluid to the spray wand at a desired pressure. In order to provide a pump sprayer which can deliver fluid at a substantially constant pressure from a fluid supply contained in conventional containers, the pump and elastomeric bladder are configured to pass through the fill openings of the containers and to be secured therein during operation of the sprayer.

Abstract: A method and apparatus for monitoring and measuring the filter blood volume by dilution techniques in real time, wherein the filter may be in use or off line during the measurements. The system includes a method and apparatus for measuring or monitoring the volume of a blood side of a filter by employing one of a bolus in the blood side upstream of the filter; a change of the filtration rate in the filter; and a bolus on the dialysate side, wherein the filter blood volume is calculated from the obtained data.

Abstract: A transient voltage surge suppressor (TVSS) receptacle includes front and rear matable casings including a plurality of through openings for receiving the blades of an electrical plug; an electrical circuit within the receptacle having at least one element adapted to clamp high transient voltages imposed thereon to a lower level; an alarm electrically connected to the at least one element for indicating the failure of the at least one element; and a reversible push-button on-off switch assembly for repeatedly engaging or disengaging the alarm.

Abstract: An electrical receptacle of the type having movable shutter members positioned to prevent insertion of objects other than electric plugs through the plug blade-receiving openings into contact with line terminals. Two identical shutter members, each having a camming portion and a blocking portion, are mutually assembled for relative, linear movement in either of two, opposite directions from a centered position to which they are biased by a pair of coil springs. Rigid objects inserted through the receptacle openings contact an angularly disposed surface on the camming portion of the shutter members, causing lateral movement of the element. When the blades of a plug are inserted, both shutter members move laterally to permit continued advance of the blades into the terminal contacts. When a single object is inserted, the blocking portion of one shutter element prevents advance of the object. A lip on the blocking portion prevents passage of the inserted object around the shutter element.

Abstract: A transient voltage surge suppressor (TVSS) receptacle having front and rear matable casings including a plurality of through openings for receiving the blades of an electrical plug; an electrical circuit within the receptacle having at least one element adapted to clamp high transient voltages imposed thereon to a lower level; an alarm electrically connected to the at least one element for indicating the failure of the at least one element; and a switch connected to the alarm for disabling the alarm, is described. The switch includes a moveable on-off element and a generally U-shaped, metal switch blade having a first leg for contacting the moveable element; a second leg for contacting a contact of the alarm in response to travel of the first leg caused by the moveable element, the second leg; an integral U-shaped portion connecting the first and the second legs; and a non-linear intermediate portion in the second leg extending toward the first leg for absorbing over-travel of the switch blade.

Abstract: A pipe line with integral fault detection and localization capability includes an inner electrically conductive pipe line element; a layer of dielectric material coaxial with the inner pipe line element, and an outer conductive coaxial element which, in combination with the inner pipe line element and the dielectric layer forms a coaxial transmission line for transporting fluids over long distances, and identifying and localizing faults.

Abstract: A transient voltage surge suppressor (TVSS) receptacle having front and rear, matable casings including a plurality of through openings for receiving the blades of an electrical plug; a plurality of first components which are fixed with respect to said casings; a plurality of second components which are moveable relative to said first components; a plurality of first rigid members formed integrally with the front and rear casings and extending from inside surfaces of each casing to define recesses for receiving the components; and a separator within the periphery of the front and rear casings for insulating one or more of the plurality of first components from each other, said separator including a separator board in a plane substantially parallel with the front and rear walls and intermediate between the front and rear casings and a plurality of partitions extending outwardly from a first surface of the board into the recesses.

Abstract: Display panels containing an item of merchandise for visual and tactile inspection by shoppers in a retail setting or containing advertising, promotional, or instructional indicia are mounted upon a carousel spinnably supported upon a support member which is attachable to a fixed support conventionally present in a retail store. The carousel is provided with securing members designed to hold indicia cards as well as items of merchandise regardless of whether the carousel is held horizontally or vertically. Two types of support members, for alternative use, are described. A first of the support members includes one pair of mounting hooks attached to a mounting bar attached to one stem of the support member, and a second pair of hooks attached to a mounting bar removably attached to a second stem of the support member for securing the carousel to a pegboard.

Abstract: A coupling is disclosed having an interference fit between its diaphragms and the spacer tube wherein the diaphragm bore and the spacer tube shaft end have mating polygonal shapes. In a preferred embodiment, the polygonal shapes are rounded, with rounded edges and comers to eliminate stress points. Localized stress areas are virtually eliminated because of the lack of concavities in the shaft end. The contact area between the diaphragm and the spacer tube thus increase the torque capacity of the coupling and eliminate fretting associated with splined joints. The coupling may be made utilizing either metallic or nonmetallic parts without loss of integrity. A method of assembling and disassembling the joint using thermal processes is also disclosed. The shaft ends are machined with the polygonal shapes and form shoulders with the central area of the shaft to serve as stops when joining the diaphragms to the shaft.

Abstract: A multi input fiber optic apparatus for cooperating with a plurality of sources, the apparatus having output ends of the individual fiber optics disposed in a random pattern, wherein a dimension of the linear array is broken into sub-lengths and each sub-length has a number of input bundles corresponding to the number of inputs for the apparatus. The input bundles are randomized at the output ends within each sub-length. The apparatus includes a housing for supporting a plurality of randomized sub lengths disposed adjacent each other within the housing, wherein each sub length includes a plurality of sub-bundles, the number of sub-bundles equaling or corresponding to the number of sources, and a plurality of inputs optical connected to the sub lengths, each of the inputs including a sub-bundle from each sub-length.

Abstract: A foam sprayer apparatus comprises a container and a manual air pump carried by the container. The pump is operable to manually pump air into the container and create an air head therein. A discharge channel establishes fluid communication between the interior and exterior of the container. The channel contains an air opening located inside the tank and above a level to which a supply of foaming composition is to be filled. An inlet of the discharge channel is located below the level to which a supply of foaming composition is to be filled. A foaming chamber is also included for causing turbulence in a fluid received from the discharge channel. A discharge valve controls the flow of fluid through the discharge channel and foaming chamber. When the valve is open, fluid flows from the discharge channel to the foaming chamber, and from the foaming chamber to a nozzle. The nozzle is in fluid communication with the outlet of the foaming chamber.