Abstract: The present invention provides a one-piece plastic thermo-formed foodtray with a lower tray portion which may be closed by a folding upper lid portion. The lid portion is locked over the tray portion by the interlocking of interior upright cylindrical elements formed from a flange about the periphery of the tray portion into exterior upright cylindrical elements formed from a flange about the periphery of the tray portion. Raised lands are provided adjacent to the exterior upright cylindrical elements in order to protect the same from pressure and subsequent degradation and deformation during the interlocking process by limiting the depth of depression with the thumb of the interlocking cylindrical elements.

Abstract: A cable television channel selector/descrambler enables the full capabilities of a cable-ready video appliance (e.g., television set or VCR) to be used in conjunction with a cable television system providing unscrambled channels and scrambled premium channels. A broadband cable signal containing a plurality of television signal channels having different frequencies is passed through a filter to produce a modified cable signal having one of the signal channels removed therefrom. The broadband cable signal is input to a tuner for selectively tuning only to scrambled signal channels contained in the broadband cable signal. The tuner is tuned to a scrambled signal channel to be viewed by stepping through the scrambled signal channels accessible by the tuner until the desired signal channel is reached. A scrambled signal tuned by the tuner is descrambled and remodulated to convert it to the frequency of the signal channel removed by the filter in producing the modified cable signal.

Abstract: Rolling apparatus comprising two rollers (FIG. 1) or (FIG. 2) disposed horizontally adjacent to each other, one roller of which has a rough surface. Above the gap between these rollers is a stock holder with an open bottom end. Dough placed in the holder falls onto the rollers and is conveyed by the roller through the gap, so that a strip of dough leaves the gap. Disposed below the gap is a third roller which is parallel to the two top rollers. Rotatably mounted on the periphery of the roller are a number of rolls. The strip of dough goes from the gap through a gap between the bottom roller and the top roller (FIG. 1) or (FIG. 2), which is preferably a roller of the same type as the bottom roller, opposite the top roller with rough surface, so that the rolls make the strip of dough thinner, while retaining its structure.

Abstract: An exercise extension device is provided which is adapted to attach to existing rowing exercise machines allowing the user to exercise while in a fully reclined position. The apparatus comprises a padded platform which attaches behind the seat of the rowing exercise machine so that the user may comfortably change from a sitting to reclining position. Ground-engaging wheels are attached to the rear of the padded platform thereby allowing the exercise extension device to move as the seat of the rowing exercise machine moves. A roller is attached to the front of the padded platform which rides on the same track as the seat of the rowing exercise machine. The roller can be easily adapted to a wide variety of existing designs of rowing exercise machines. Further, the height of the roller and the ground-engaging wheels are adjustable in order to adapt to a wide variety of existing rowing machines.

Abstract: A novel reed switch element and method of fabricating the same comprises a ferrous alloy reed which is positioned in a glass envelope. The reed element is characterized by a layer of substantially pure titanium or chromium applied on that portion of the reed element which is in registration with the seal region of the glass envelope. Reed switch elements fabricated in this fashion display substantially improved glass-to-metal seal strength.

Abstract: In a metronome, a toothed wheel and a bell drum each comprise toothings facing each other, by means of which the toothed wheel and the bell drum are in positive engagement with each other in defined angular positions. The toothed wheel and the bell drum are axially displaceable relative to each other on the toothed wheel shaft in order to release their positive engagement and to alter their angular position. When the metronome is in operation, the toothed wheel and the bell drum are kept in mutual positive engagement by releasable holding means.

Abstract: Apparatus for the automated feeding, placement and ultrasonic welding of a metal disc, such as a copper heatsink, to a recipient workpiece. A metal disc is automatically fed through the broader end of a chamfered bore cut in a weld location mask. The metal disc is gravity-fed to the narrower end of the bore as the weld location mask is automatically positioned over a recipient workpiece. An ultrasonic welding tip is inserted through the bore to hold the metal disc against the recipient workpiece. Welding of the disc to the recipient workpiece is accomplished by ultrasonically vibrating the tip.

Abstract: A receptacle suitable for a mail box comprising an upright cylindrical housing having a transversely extending floor that is spaced upwardly a substantial distance from the lower end of the housing and a hemispherical top closing the upper end of the housing. A chamber to hold the mail is located between the floor and the top. A hinged door is attached to the housing and covers an opening formed in the side of the housing. Lag bolts are provided to detachably and firmly connect the housing to a post. Several holes are formed around the perimeter of the housing at the lower end thereof and well below the floor. Each hole is adapted to receive one of the lag bolts. There is also a hole formed in the center of the floor for receiving one of the bolts.

Abstract: The invention relates to a ground covering in the form of an artificial turf material with lasting playing field marking lines. In accordance with the invention, the marking lines are formed by separately manufactured material strips and attached to the adjacent turf material using the elements of a hook and loop fastener.

Abstract: Essentially solid free-flowing pre-mixes and aqueous concentrates intended for addition to nutrient material in the manufacture of feedstuffs for poultry are provided consisting essentially of from about 1000 to about 1,000,000 viable sporulated oocysts of at least one species of coccidia to which poultry are susceptible and at least one edible thickening agent.

Abstract: A probe is mounted on a water submersible pump housed within a transformer vault. The probe will extend into any water which accumulates in the bottom of the transformer vault enabling a conductive path to be established through an appropriate electric circuit to the pump motor to permit operation of the pump so that the water which is on the bottom of the vault can be safely pumped from the vault. As the water level falls as it is pumped, oily fluids, which are immiscible in the water and will normally rise to a level above the water level in the vault, will come in contact with the probe to form an electrical insulator to inactivate the circuit to disconnect a power source from the pump motor.

Abstract: Radiator housing assembly, for a hydronic baseboard heater for heating a room or area, forming a part of an overall building or zone heating system having a master thermostat, said assembly having a damper which is positionable between open and closed positions in a controlled manner to regulate the flow of heated ambient air therethrough. The damper is adapted for automatic electrical positioning in response to a remote control device, such as an adjustable thermostat in the room or area to be heated in order to maintain the room or area at a predetermined desired temperature at or lower than the temperature setting on the master thermostat, thereby conserving energy.

Abstract: Apparatus for the ultrasonic sealing of plastic or metal containers which include a source of ultrasonic wave energy, an ultrasonic welding horn and an anvil. The ultrasonic welding horn is provided with means to adjust and make uniform the amplitude of vibration of the wave energy transmitted by the horn. This is accomplished by attaching weights of varying magnitude to the horn, thus assuring a uniform amplitude of the ultrasonic vibration across the face of the worksurface of the horn, to effect a uniform bond on a workpiece.

Abstract: Separation apparatus capable of separating plasma into high molecular weight substances and low molecular weight substances containing albumin, regardless of whether plasma is obtained by separation of corpuscular components in a continuous centrifugal separator or in a batch-type centrifugal separator. The apparatus comprises a filtration membrane module, a plasma feeding circuit connecting the centrifugal separator with the filtration membrane module, a plasma return circuit for returning to a patient purified plasma freed of high molecular weight substances, a supplemental fluid circuit for supplying additional fluid to the plasma return circuit, and a condensed plasma discharge circuit for disposal of high molecular weight substances. The apparatus is controlled independently of the centrifugal separator.

Abstract: An apparatus for the even alignment of objects essentially uniform among each other comprises at least one conveyor belt moving in a plane in a particular direction, on which the objects are placed. A first and a second conveyor belt, which converge downwards with their conveyor planes to a funnel which randomly receives the objects to be aligned, are provided. In the area of the funnel the first conveyor belt rotates from the bottom toward the top and the second conveyor belt rotates transversely hereto, thus due to the interaction of both conveyor belts the objects are aligned and are subsequently conveyed out of the funnel in this condition by the second conveyor belt.

Abstract: There is provided an improved polyester fiber said improvement comprising (a) said fiber containing a density increasing amount of particles having a specific gravity higher than the polyester polymer from which the fiber is made and (b) a roughened surface thereby providing improved drape and silhouette to woven and knitted fabrics made therefrom.

Abstract: The invention relates to a two-wire switch for connecting a load to an ac ltage source, and, in particular, to a two-wire switch with an auxiliary voltage source. A capacitor acting as charge storage device can be charged by the auxiliary voltage source which operates on the principle of phase angle control. In accordance with the invention, a series connection comprising a threshold element which can be brought into the conducting state when there is a prescribed minimum voltage across the capacitor, and a diode is inserted into a control current circuit for a controllable semiconductor device on the input side of the bridge.

Abstract: A highly blood-compatible material comprising a polymeric base material and water-soluble and substantially nonionic polymer(s) directly attached to the surface of the base material in an amount of 1 to 100 .mu.g/cm.sup.2. The polymeric base material is preferably in the form of a web and composed of polyurethane, ethylene/vinyl acetate copolymer or polyvinylchloride. In addition, the attached polymers may be selected from the group consisting of acrylamide polymers, polyvinylpyrrolidone, polyvinyl alcohol, polyethylene glycol, and dextran. This material is particularly useful for preparing vascular prosthesis of small diameters.

Abstract: Multiple-spindle lathe with a drive shaft which is rotatably and longitudinally displaceably mounted in a headstock, a spindle carrier which is mounted on the headstock for rotation about an indexing axis, and several work spindles which are rotatably mounted in the spindle carrier and comprise at their outer ends chucks and at their inner ends coupling elements for coupling one respective work spindle with the drive shaft.