Abstract: A foldable walker having a front frame section, left and right side frame sections and a top frame section. The left and right side frame sections and the top frame section are all hingedly attached to the front frame section. The walker folds by disengaging the top section from the left and right side frame sections. The top section pivots downwardly to lie against the front frame section. The left side section pivots outwardly to lie against the front of the front frame section. The right side frame section pivots inwardly to lie against the top frame section and the rear of the front frame section.

Abstract: An apparatus and method is provided for the support of an accessory unit within the defined space of a storage area. The storage area is preferably a floor-mounted console receptacle or a dashboard receptacle commonly found within the seating compartment of an automobile. The support structure provides a mounting plate that supports a radio telephone unit within the receptacle by spanning the space separating side walls of the receptacle. Engaging Velcro attachment elements mounted upon both side flanges of the mounting plate and the receptacle side walls permits the mounting plate supporting the radio telephone unit to be easily installed to removed within the receptacle. The use of Velcro elements to removably install the mounting plate within the receptacle eliminates the need for fastening screws, nuts and bolts, or rivets to mount a support structure within the storage area.

Abstract: A method for the quantification or qualification of antigens with an immunological solid phase method, for example of the ELISA type, during which the invention seeks to overcome the difficulties with falsely high or falsely positive measurement results.

Abstract: An apparatus and method is provided for the support of an accessory unit within the defined space of a storage area. The storage area is preferably a floor-mounted console receptacle or a dashboard receptacle commonly found within the seating compartment of an automobile. The support structure provides a mounting plate that supports a radio telephone unit within the receptacle by spanning the space separating side walls of the receptacle. Engaging Velcro attachment elements mounted upon both side flanges of the mounting plate and the receptacle side walls permits the mounting plate supporting the radio telephone unit to be easily installed or removed within the receptacle. The use of Velcro elements to removably install the mounting plate within the receptacle eliminates the need for fastening screws, nuts and bolts, or rivets to mount a support structure within the storage area.

Abstract: Carbon black beads are provided which generally comprise carbon black powder and an elastomer such as styrene butadiene rubber, butadiene rubber, natural rubber, nitrile rubber, or the like, in an amount between 0.5 and 5.0% by weight of the beaded carbon black. The carbon black beads are made by beading the carbon black powder with latex. The latex treated carbon black is readily handleable in bulk form, easily dispersible in elastomeric compositions, and imparts improved dynamic properties to elastomeric compositions.

Abstract: An automatically resealing container is provided, consisting of an interior paperboard box and an external resealing bag of flexible plastic film. The film is associated with closure flaps of the box such that when the flaps are reclosed, the film is pressed together outside the box to provide a nearly airtight seal. The single external film bag provides the dual function of protecting the contents as well as the exterior of the box.

Abstract: An improved spring is provided which may be used in cushions, mattresses, or box springs which includes a limiting internal member. This limiting member assist in limiting the longitudinal deflection of the springs. Also provided are snapped-fitting connections between the spring and a grid for use within a box spring. Also provided is a "floating" portion of a peripheral border wire, particularly suitable for use in a pair of box springs beneath a king-size mattress unit. Also provided is a corner guard which provided support for upholstered fabric on a box spring. Finally, an improved borderwireless mattress using a peripheral band is provided, which allows the mattress to bend more easily, without disadvantageous setting of its border wires.

Abstract: A peripheral adapter board and circuit which is capable for operation with two different personal computer bus architectures is disclosed. The preferred peripheral function for the board and circuit is a terminal emulator, which allows a personal computer into which the board is plugged to function as a terminal for a mainframe or minicomputer. Edge connectors or contacts are provided on opposite side edges of the board; each one of the edge connectors is compatible with a different computer bus. The adapter board may be flipped over to plug into either computer bus. A removable, repositionable connector board assembly is provided at one end of the board, for mounting communications connectors in a position accessible from the back panel of a host personal computer. The connector board may be repositioned to maintain the orientation of the communications connectors with respect to the personal computer back panel when the adapter board is flipped over to plug into a different computer bus.

Abstract: A needle spacer is disclosed for use with a biopsy needle assembly of the type which is coupled to a driving unit to effect movement of the needle assembly. The needle spacer maintains the biopsy needle assembly in a predetermined operational relationship until after the needle assembly is coupled to the driving unit. In the preferred embodiment, the needle spacer prevents the lid of the driving unit from being closed while the needle spacer is still in place on the needle assembly, thereby eliminating the possibility that the physician will forget to remove the spacer prior to firing the instrument. In a first alternate embodiment, the needle spacer is configured to interfere with movement of the needles within the driving unit while the spacer is still in place so that if the physician attempts to fire the instrument with the needle spacer still in place, the needles will not advance.

Abstract: A peripheral adapter board and circuit which is capable for operation with two different personal computer bus architectures is disclosed. The preferred peripheral function for the board and circuit is a terminal emulator, which allows a personal computer into which the board is plugged to function as a terminal for a mainframe or minicomputer. Edge connectors or contacts are provided on opposite side edges of the board; each one of the edge connectors is compatible with a different computer bus. The adapter board may be flipped over to plug into either computer bus. A removable, repositionable connector board assembly is provided at one end of the board, for mounting communications connectors in a position accessible from the back panel of a host personal computer. The connector board may be repositioned to maintain the orientation of the communications connectors with respect to the personal computer back panel when the adapter board is flipped over to plug into a different computer bus.

Abstract: The invention pertains to a control circuit for a collectorless DC motor where at least one power transistor (14, 16) is input-connected to each stator coil (2, 4) of the motor; said transistor is driven by at least one rotor position sensor, especially a Hall generator having commutation circuits to commute the motor current, and where a blocking protection device is provided to interrupt the motor current in an overload or blockage. The blocking protection device (26) has at least one semiconductor circuit (30) carrying the motor current which is switched through or blocked depending on its temperature.

Abstract: Agriculturally active materials, such as pesticides, herbicides and the like and a process for microencapsulating said materials. The present invention includes trifluralin having a polymorphic form characterized by a yellow color and a melting point of approximately 41.degree.-43.degree. C. The present invention also includes a method of using the yellow polymorphic form of trifluralin as a herbicide. In addition, the present invention includes a method of microencapsulating low-melting agriculturally active materials, such as trifluralin. The microencapsulation process comprises the steps of heating a low-melting, water-immiscible, agriculturally active material to a molten state. The molten active material is then combined with an aqueous soluion of a water-soluble, film-forming polymer at a temperature sufficient to maintain the active material in its molten state.

Abstract: An improved process for the manufacture of polyurethane elastomers from a reaction mixture which comprises a polyol, an isocyanate, water, a bismuth catalyst and an optional filler. In the improved process of this invention, the rate of reaction is decreased by the addition of water to the reaction mixture and increased by the removal of water from the reaction mixture.

Abstract: Method in improving of the precision of impedance detectors in radiosondes. In the method, the temperature of the detector or detectors (30 and/or 10) is measured by means of a thermocouple (20), in which the joint (23) of one branch of its thermoelements (21,22) is placed in connection with, or at the proximity of, the detector to be measured. In the thermocouple (20) the joint (24) of the other branch is placed in the atmosphere (SA) surrounding the detector. By means of the thermocouple (20), the difference (T.sub.1 -T.sub.0) between the temperature (T.sub.1) prevailing in connection with the detector and the temperature (T.sub.0) in the surrounding atmosphere (SA) is detected. The output signal (f.sub.out) of the measurement coupling of the radiosonde is affected by means of an electric signal (U(t)) representing the difference (T.sub.1 --T.sub.

Abstract: The invention provides a wound dressing comprising a pad of soft polyurethane foam one surface layer of which is hydrophilic and a backing layer of which is hydrophobic and a sheet or strip of a soft conformable polyether foam having an adhesive on one surface thereof. The surface of said pad opposite the hydrophobic layer is secured to said sheet or strip by said adhesive and said sheet or strip overlaps said pad to enable the pad to be secured in position with said hydrophilic layer in contact with a wound by means of said adhesive.

Abstract: Insulation material is configured to provide improved insulating properties in a shipping container. A sheet of insulation material is placed aong the bottom of a container under the contents of the container. An insulating blanket constructed of plastic sheets sealed around their periphery to form a pouch for containing scored paperboard and scored mineral wool is configured to have an inverted U-shape and is placed over a bottom half of the container. A top half of the container is then placed over the bottom half such that the legs of the inverted U-shaped material are between the overlapping side of top and bottom of the container and the middle portion of the U-shaped material is between the top of the container and the contents within the container. A method of scoring mineral wool positioned between plastic sheets is also provided.

Abstract: Selective separation of blood cholesterol by cascade filtration. An in vivo filter is implanted within a blood vessel to separate plasma from blood, and the separated plasma is removed to an extracorporeal secondary filter which removes low density lipoprotein (LDL) from the plasma. The in vivo portion of the apparatus comprises a number of microporous hollow fibers sized to permit diffusion of plasma, but not cellular or other larger blood components, through the fiber pores to the hollow interior of the fibers. The secondary filter passes the removed plasma along membrane walls formed by fibers sized to block passage of LDL while permitting passage of other plasma components, so that approximately 95 percent of LDL is separated from the plasma before the plasma is returned to the body in real time after removing the LDL cholesterol.

Abstract: In accordance with the present invention, a method is provided for treating ischemia resulting from microvascular compromise caused by abnormal cells in the blood stream, which is often a complication of malaria and leukemia. The method is especially useful for treating cerebral malaria. The method comprises administering to an animal or human with the microvascular compromise a therapeutically effective amount of a surface active copolymer with the following general formula:HO(C.sub.2 H.sub.4 O).sub.b (C.sub.3 H.sub.6 O).sub.a (C.sub.2 H.sub.4 O).sub.b Hwherein a is an integer such that the hydrophobe represented by (C.sub.3 H.sub.6 O) has a molecular weight of approximately 950 to 4000 daltons, preferably about 1200 to 3500 daltons, and b is an integer such that the hydrophile portion represented by (C.sub.2 H.sub.4 O) constitutes approximately 50% to 90% by weight of the copolymer.

Abstract: Kidney dialysis in which metabolic waste products are removed from plasma instead of blood. Plasma separation takes place in vivo through a filter implanted within a blood vessel, and the separated plasma is removed to an extracorporeal dialysis apparatus for separating waste products from the plasma. The plasma then is returned to the bloodstream. Plasma flow in the system is significantly less than blood flow used in current hemodialysis systems, so that the present system performs dialysis continuously in real time to eliminate the extreme swings of toxicity associated with high-volume hemodialysis.