Abstract: A low temperature food merchandiser having a cabinet with an open front product area, a primary cold air system for maintaining substantially constant frozen food temperatures of 0.degree. F. or ice cream product temperatures of -5.degree. F. in the product area including the formation of a series of vertical curtains of primary low temperature air extending across the open front of discrete product area sections, a secondary air system protecting the primary air curtains, and the primary system also including primary evaporator means constructed and arranged to operate at elevated coil temperatures in the range of -5.degree. F. to -8.degree. F. to maintain 0.degree. F. product temperature or coil temperatures of -12.degree. F. to -15.degree. F. to maintain -5.degree. F. product temperatures, and including high efficiency reverse air cycle defrost means for periodically defrosting the primary cooling means.

Abstract: A low temperature food merchandiser having a cabinet with an open front product area, a primary cold air system for maintaining substantially constant low temperatures of at least 0.degree. F. in the product area including the formation of plural primary low temperature air curtains across the open front, a secondary air system protecting the primary air curtains, and the primary system also including primary evaporator cooling means constructed and arranged to operate at elevated coil temperatures in the range of -5.degree. F. to -2.degree. F. to maintain the 0.degree. F. product area temperature, and including reverse air cycle defrost means for periodically defrosting the primary cooling means.

Abstract: An air handler for conditioning recirculated or make-up space air and including a conditioning chamber and air flow means for moving air therethrough. An evaporative air cooler of the air handler has an air permeable pad extending across the chamber and a fluid spray system for maintaining a moist condition of the pad. The spray system is constructed and arranged to discharge cooling fluid spray patterns covering the upstream side of the pad in a plurality of predefined zones, and further includes a plurality of moisture sensors positioned at predetermined locations adjacent to the downstream side of the pad. A controller is responsive to sensed moisture conditions for controlling the activation and deactivation of the spraying mechanism to maintain at least a preselected moisture content in the pad.

Abstract: A non-coring rotary mining tool having a bit body constructed and arranged for rock boring as in roof bolting operations, and including PCD cutter inserts of preselected size mounted at a negative angle and having substantially continuous cutting edges defining a sinusoidal cutting path from the tool axis to the gauge-cutting margins thereof; and a method of drilling rock bores utilizing moderate rotational speeds, reduced axial thrust and delivery of flushing fluids at substantially higher pressures.

Abstract: A personal defense system having a protective spray container with an upper end spray actuator, a dispensing cap constructed and arranged to house the spray actuator and have a fixed relationship with the dispensing nozzle thereof, a holster for the container having an interlocking structure with the dispensing cap to prevent relative rotation, and also including a security system releasably attached to the hoister.

Abstract: An early warning system for a material transfer system having an elongated area to be monitored for internal wear caused by erosive flow action of a transfer material. A material transfer conduit has an inner surface forming a flow passageway for the transfer material and an outer wall surface with a wear detection indicator normally visible in situ at an elongate section of the outer wall and being subject to obliteration upon wear-through of an underlying portion. A translucent or transparent outer containment layer surrounds the outer wall surface of the transfer conduit The wear indicator is colored to contrast with the transfer material and indicates wear by an eroded area which can be visually observed through the outer translucent layer.

Abstract: A rotary mining tool having a steel body adapted to be driven axially and turned in a rotational arc relative to its axis and being provided with a hardened wear surface with a cutting edge adapted for cutting engagement with a work area under the axial thrust of said tool body, the wear surface and cutting edge being constructed and arranged with a negative rake angle and a negative skew angle to position the wear surface for such cutting engagement under substantially total compression to thereby minimize tensile shear forces that would tend to break or crack the hardened wear surface.

Abstract: A two-tier counter system for use in commercial foodservice having an upper level of top-defining modular counter units with upper work areas, end margins of substantially identical profile and dual latching apparatus for releasably interlocking adjacent units together in mating end-to-end abutting relationship; and a lower level of base-defining cabinet and leg supports for underlying supporting placement relative to the upper level counter units; and continuous mounting apparatus constructed and arranged for accommodating selective longitudinal positioning of the lower level supports relative to the upper level units. The invention also includes the modular top-defining counter unit, and the method of assemblying the counter unit.

Abstract: Apparatus and method for generating successive video images of a moving bone of a subject. A fluoroscope generates a fluoroscopic image of the moving bone. A video camera detects the fluoroscopic image and converts the detected image into successive video images. A recorder records the successive video images. A monitor displays the recorded successive video images as the images are being generated. The monitor is located adjacent the fluoroscope for viewing by an operator thereby permitting the operator to observe and/or position the bone in response to images displayed on the monitor. A crisscrossed grid is located adjacent the image intensifier of the fluoroscope between the bone and the image intensifier. A CPU compares the successive video images to a reference representation corresponding to a desired or previous movement or pattern of movement of the bone with respect to a second, immobilized bone and any resulting flexure of a joint between the bone and the second, immobilized bone.

Abstract: This invention is an apparatus for controlling food temperatures in a food warming cabinet having at least one food holding zone. The apparatus includes a first sensor for sensing a temperature representative of the temperature of the food, a heater, a second sensor for sensing a temperature representative of an operating condition of the apparatus, and a control circuit connected to receive sensed input signals from the first and second sensors, and being constructed and arranged for controlling the operation of the heater in response to the sensed input signals and for selecting a set point value forming an ideal temperature condition for the food.

Abstract: An ice maker including freeze and harvest controls is disclosed. The evaporator includes a unitary evaporator and ice mold. A compressor and condenser cool the evaporator to freeze ice on the mold in a normal refrigeration cycle and the mold is defrosted by hot gas to harvest ice from the ice mold. The temperature of the ice mold and the liquid line temperature of the condenser are sensed to control the length of time of the ice forming cycle.

Abstract: An emergency trauma board having dual, spaced apart main frames, one main frame having a rigid transparent patient support panel with X-ray holding means on a underside thereof, the other main frame having a fluid permeable patient support panel with an underlying imperforate fluid transfer barrier, patient restraints for immobilizing a patient on one of said panels, and other means accommodating hinging movement of one panel from a closed position within its main frame to an angular open position and supporting such one panel in a braced condition.

Abstract: An anti-theft pistol holster having a body casing with a lower muzzle end and an upper access opening, a yieldable member adjacent the muzzle end for yieldably seating the muzzle of a pistol, a rigid keeper member adjacent the upper opening in opposed relation to the yieldable means and being movable between a position of positive engagement with the butt of a pistol and a released position disengaged from the pistol butt.

Abstract: Stroller apparatus for converting a child's car seat having a supporting base into a mobile stroller unit in which the stroller apparatus includes a base frame, front and rear wheel sets mounted on the base frame for movement between an extended stroller position and a retracted car seat position within the base frame, an actuating lever for selectively operating the wheel sets between the extended and retracted positions, a latching mechanism for releasably interlocking the car seat supporting base to the stroller apparatus, and an extensible handle movable between an extended stroller position and a car seat position.

Abstract: An interface adapter for use in combination with a commercial installation having a central refrigeration system with multiple compressors and refrigerated units and also having environmental apparatus for regulating the heating, ventilating and air conditioning of such installation. The refrigeration system has a local control apparatus for operating the system in response to local status signals and has remote control input ports for remote control of the system. A remote electronic controller adapted to receive the local status signals and to override at least part of said local control means operates the refrigeration system by generating an electrical control signal and a switchback signal indicating that the electrical control signal should be recognized. The interface adapter electronically isolates and interfaces the refrigeration system and the remote controller.

Abstract: An inside corner bracket for attachment at an inside corner formed between angularly-related structural members, the corner bracket having two angularly-disposed channel members each having contiguous top, edge and bottom walls forming an outwardly opening channel, and the top or bottom walls of the channel members being integrally formed to rigidly interconnect the channel members in angular disposition with the edge walls defining the inside corner. A one-piece blank for forming such inside corner bracket.

Abstract: A setting tool for animal traps having a pair of jaws acted on by spring-loaded actuating levers, in which the setting tool includes a trap orienting base, a pair of cam arms having adjacent ends pivotally connected together on the base and extending outwardly therefrom, a pair of cam hook members rigidly connected to the outer ends of the cam arms to extend upwardly in an angular relationship and having actuating lever engaging means on the upper end thereof, and a pair of handles rigidly connected to the cam arms intermediate to the ends thereof.