Abstract: An andiron system, for use in a fireplace comprising a floor, a front wall defining an opening, a rear wall, a pair of oppositely disposed side walls and a chimney, includes ledge means fixedly secured between the side walls at a location adjacent the rear wall. The ledge includes an upper surface spaced above the floor to which a pair of spaced apart elongated channel means are fixedly secured. The system also includes a pair of andirons, each comprising a forward leg member resting upon the floor and an elongated generally horizontal member, including a first end and a second end. The first end of the horizontal member is attached to the leg member and the second end is nonpivotally received in the channel means to restrain the andirons from moving laterally relative to one another and the fireplace.

Abstract: An exercise machine especially for the legs and lower trunk of the human body includes a pair of foot supports mounted on a plate. Means connected to the plate oscillates the plate up and down in simple harmonic motion, and a pair of handles are provided above the plate at about hip level for gripping to steady a person exercising on the machine.

Abstract: A heater for use with hot tubs formed from material subject to damage from excessive heat, the heater comprising a heating element arranged within a chamber adjacent a thermally conductive plate with one or more hollow extensions penetrating through a surface portion of the hot tub to permit direct heat transfer between the thermally conductive plate and the hot tub interior. The thermally conductive plate is preferably formed with transparent inserts permitting light from the heating element to enter the hot tub, the heater also preferably including means for communicating additional hot tub accessories with the hot tub interior. The heater may also be employed with other liquid containers, for example, storage tanks which may be alternatively heated by solar energy.

Abstract: A pop-up item for promotional purposes wherein a cover panel and a back panel, hinged to each other along a straight line, sandwich a die-cut panel in which are formed a plurality of interconnected coupons and at least two tabs. One tab is joined to the cover, and the other tab means is joined to the back. Opening of the cover causes the coupons to pop-up and attract the attention of the recipient. The items can be inexpensively mass-produced as a part of a web-press or sheet-press operation.

Abstract: A process is provided for the manufacture of animal feed and food supplements from vegetable protein materials. In the process a vegetable protein material is comminuted to provide a meal or flour. An edible acid is dispersed in the comminuted vegetable protein material to provide an acidified protein substrate having a controlled level of moisture. The acidified, moisture containing substrate is then heated to an elevated temperature for a specified period of time.

Abstract: A mixing apparatus particularly adapted for mixing blood cell suspensions and which includes a support platform having discrete troughs adapted to receive a plurality of specimen container tubes and effect rocking of the tubes to uniformly mix blood cell suspensions without distorting, breaking or foaming the suspensions. The platform may be randomly loaded with specimen tubes and is adapted to effect rocking of the platform in response to the presence of a tube within a trough, and provides first signals indicating the presence of tubes within the individual troughs and second signals indicating lapse of a predetermined mixing time for each specimen tube.

Abstract: A system for the capture and withdrawal of cooking vapors from above a cooking surface disposed in a room, such as a kitchen, comprising hood means disposed above the cooking surface, means for introducing air from outside the room through an inlet into the space between the cooking surface and the hood to entrain the vapors from the cooking surface, and filter means disposed within the space between the hood and the cooking surface at a vertical height less than the vertical height of the air inlet means for receiving vapor-ladened air and exhausting the same after filtration thereof.

Abstract: Preservation of low acid food products in the absence of chemical preservatives with the combination of acetic acid and phosphoric acid.

Abstract: The first wall of a deuterium-tritium fusion reactor is regenerated in situ. The first wall substantially surrounds an enclosed reaction region confined within the reaction chamber of the reactor. To regenerate a worn first wall without opening the reactor chamber, a gaseous substance is introduced into the chamber, at least a portion of the gaseous substance comprising material, such as low Z refractory material, suitable for forming the first wall. At least a portion of this material is deposited, as by pyrolysis, in solid form on the first wall to regenerate the first wall, and residual gas is removed from the chamber. The chamber is then recharged with a mixture of deuterium and tritium. All the while the inflow of contaminants into the chamber is substantially excluded. Preferably, the pyrolysis of the gaseous substance is effected by energizing the coils used in the operation of the reactor for producing a plasma of deuterium and tritium ions in the reaction chamber.

Abstract: In one embodiment, a closed cycle gas turbine system employs a precooler for cooling the gas prior to compression. A closed loop coolant circuit for the precooler includes a primary heat exchanger. A secondary heat exchanger is provided which may be employed during periods of peak demand on the turbine system to provide additional cooling for the coolant in the closed loop coolant circuit for the precooler. The secondary heat exchanger may also be employed to transfer heat in the reverse direction during periods of time in which the primary heat exchanger is operating at high effectiveness to provide storage of a fluid at low temperature to enhance operation in the initially described mode. In another embodiment, a similar coolant circuit operates in conjunction with a condenser for a steam power electrical generating facility.

Abstract: A fiber optic cable and method of making same are disclosed wherein one or more fiber optic elements are carried along the length of an elongate strength member, a tape is applied coaxially over the fiber optic elements and elongate strength member to establish a cable core, and a protective jacket is disposed coaxially over the cable core. The tape maintains the fiber optic elements and elongate strength member in assembled relation, provides a heat barrier and facilitates stripping of the jacket without disturbing the cable core. A filler material may be interposed between the jacket and the taped cable core.

Abstract: A power supply system to operate an implanted electric-powered device such as a blood pump. A secondary coil having a biocompatible covering is implanted to subcutaneously encircle either the abdomen or the thigh at a location close to the exterior skin. The secondary coil is electrically interconnected with an implanted storage battery and the blood pump. A primary coil of overlapping width is worn by the patient at a location radially outward of the secondary coil. An external battery plus an inverter circuit in a pack is attached to a belt having a detachable buckle connector which is conventionally worn about the waist. Efficient magnetic coupling is achieved through the use of two air-core windings of relatively large diameter.

Abstract: A cassette is described for use in an intravenous delivery system having a pump. The volume of a main chamber defined by the cassette body is varied by a membrane in a wall thereof while unidirectional inlet and outlet valves maintain the direction of fluid flow into and out of the main chamber. A prechamber is positioned above the inlet port in order to accumulate air from the upstream portion of the intravenous delivery system in which the cassette is used.

Abstract: A box fan comprising a box-like structure having front and rear openings interconnected to form a duct passing through said structure, said duct containing an electric motor and a large axial depth wide-bladed fan blade assembly operable by the motor to rotate about an axis of rotation, which fan blade assembly is so located that the center of gravity of said fan blade assembly is located near the rear opening, wherein the fan blade assembly has a plurality of blades each of which has a shape in a plane normal to the axis of rotation, which shape comprises a neck connecting the blade to a hub defining the center of the fan blade assembly, a slightly convex leading edge extending from said neck, a convex outermost edge, a slightly convex trailing edge and a chin portion connecting the trailing edge to the neck, said trailing edge being heavily set near said chin portion and being decreasingly heavily set as the outermost edge is approached along said trailing edge.

Abstract: A shielded ultra-miniature cable suitable for example to provide low voltage connections, the cable including one or more low voltage conductors surrounded by an insulation coating, the insulation coated conductors being surrounded by a semiconductive coating providing a ground shield. The insulation and semiconductive coating are formed from thermoplastic materials of limited thickness to permit soldering of said shielded cable without requiring prior removal of said semiconductive and insulation coatings and to maintain minimum dimensions for the cable.

Abstract: A battery backup system provides DC power to a data processing system in the event of an AC power failure. A preferred embodiment supplies DC power from a plurality of series-connected batteries at a voltage level sufficient to operate a data processor. After a time delay, the batteries are connected in parallel to provide DC power at a lower voltage level sufficient to maintain information stored in a memory.

Abstract: A carton includes bottom flaps that, upon erection of the carton, fold inwardly and interlock to form a strong lock bottom carton ready for immediate loading without the aid of fastening means. The structure allows the carton to be used as a retripper whereby the bottom flaps are folded inwardly as the carton is collapsed to a flat, shipping state with the relation between the interlocked flaps being such as to allow ready return of the lock bottom condition upon re-erection of the carton.

Abstract: Hydrogen is produced by bombarding a mixture of water and heavy elements having an atomic weight of at least about 40 with fast neutrons so as to cause thermal dissociation of the water to produce hydrogen ions following elastic collision of the fast neutrons with the heavy elements. The hydrogen ions are removed from the reaction zone to prevent recombination to water, maintaining conditions which favor combination to molecular hydrogen or combination with carbon to form hydrocarbons.

Abstract: A cassette is described for use in an intravenous delivery system having a pump. The volume of a main chamber defined by the cassette body is varied and unidirectional inlet and outlet valves maintain the fluid direction into and out of the main chamber. In the operating position of the cassette, the outlet valve is positioned to be in communication with any gas present in the main chamber. For the purpose of accumulating air from the upstream portion of the intravenous delivery system in which the cassette is used, a prechamber is positioned above the inlet port communicating therewith.

Abstract: A method for manufacturing a coated, paintable, ink receptive and glueable polyolefin film. A polyolefin film is uniformly coated with an aqueous dispersion comprising aluminum chlorhydroxide, phosphoric acid and high molecular weight polyvinyl alcohol.