Abstract: A structural improvement to, and a method of improving, an air-dropped spin-actuated bomb of the anti-personnel type. The structural improvement comprises a split flexible polyethylene obturating disc which replaces the prior art rigid metal obturating disc used on these bombs. The improved disc is releasably connected to the bomb, whereas the prior art disc is fixedly attached to the bomb. The method comprises the step of disposing and releasably connecting the split flexible polyethylene obturating disc to the bomb at a location between the forward body section of the bomb and the aft fin section thereof. The result of the use of the structural improvement, and of the improvement method, is that the arming of the bomb is delayed, so that the bomb, which could only be safely air-dropped from a low speed aircraft, now can also be air-dropped from a high speed, or a very high speed, aircraft.

Abstract: A boosting device including a thin, cylindrical shell of high explosive, such as PETN, which may be formed by a spiral wrap of detonating cord. The shell is formed around an inert core which is either a solid cylindrical body, a hollow cylindrical body or a web-like structure having radial spokes or a hollow center. Detonation of the shell is initiated at one point on the shell, and the detonation proceeds along opposite sides of the cylindrical shell to a point diametrically opposite the initiation point where the detonation fronts meet thereby producing a shock reinforcing effect. The shock reinforcing effect allows a relatively small amount of explosive to initiate even low sensitivity blasting agents.

Abstract: An improved delay primer unit for detonating an explosive material in a borehole with a detonating cord down line extending into the borehole. The primer comprises an explosive element capable of detonating the explosive material upon being detonated, means for preventing direct detonation of the explosive element by the down line, a time delay detonating element extending between the down line and the explosive element with a known detonation time delay value between first and second ends of the delay element, means slidably associating the first end with the down line and means for connecting the second end in detonation relationship with the explosive element. The improvement in this type of unit is the provision of the explosive element as a support element and a detonating cord wrapped around the support element to form a primer.

Abstract: A pneumatic transport system in which a transport tube is provided with an overhead rail in the form of an I-beam contained therein and a vehicle riding along the rail. The vehicle is formed by an elongated container suspended beneath the rail and displaceable therealong within the tube, with at least one vertical pivot mounted at an end of the container and a support mounted at an end of the container and a support mounted on the vertical pivot. A plurality of support rollers are mounted on the support and engage the lower flange of the rail while a plurality of guide rollers, also mounted on the support, flank the lower flange of the rail. Packing means provided at an end of the container enables the vehicle to be pneumatically displaced through the tube, the packing means being spaced from the wall of the tube and mounted on the vertical pivot for displacement in a horizontal plane by a pin provided on the support and engaged by a fork provided on the packing means.

Abstract: An emergency run guide assembly for the axles of a bogie frame for rail cars which have axle boxes and wich have spring leaf guide rods for the axle guidance of bogies which are secured at their one ends on the bogie frame and at their other ends on the axle boxes, and which guide rods are subjected to breakage, comprises a secondary guide system including bushings secured vertically on the bogie frame and having a central bushing wall. An axle box housing on the axle of the bogies is provided with a bore for the vertical mounting of a bolt thereon. A cylindrical sleeve member has an open bottom end and an opposite top closed end with a bore therethrough and it is mounted on the bolt with its open end downwardly. The walls of the sleeve member are spaced radially outwardly of the bolt and radially inwardly of the cylindrical bushing wall and the sleeve member is secured to the bolt by means of a locking screw which extends through the opening of the sleeve member and is threaded into the bolt.

Abstract: Cyclonic furnace for efficient burning of such waste products as rubber tires or industrial or domestic refuse with minimum atmospheric pollution and high heat output has fixed circular hearth with central outlet for slag and ash discharge, material to be burnt being fed onto the hearth periphery; combustion air ports opening tangentially into its combustion chamber; and automatic control means regulating e.g. material infeed and inflow of combustion air including a facility for monitoring combustion conditions in the furnace, preferably by measurement of CO and CO.sub.2 levels, and comparing those conditions with previously recorded conditions automatically to predict changes and make anticipatory adjustments of the furnace controls giving extremely rapid control reaction and enabling combustion air requirements to be cut to a minimum, of which the following is a specification.

Abstract: A top feeding device for advancing the upper layer of material in synchronism with the lower layer of material being sewn. The top feeding device includes an upper feed dog moving periodically in conjunction with a lower feed dog to grip and advance the materials being sewn along a path related to the stroke of the stitching needle or needles of the sewing machine. Drive for the top feeder is derived from an eccentric cam mounted on the sewing machine main drive shaft, motion being positively transferred to a pivotal upper feed dog arm by means of a lever arm depending from that arm and being a cam-following surface held under adjustable pressure in contact with the eccentric cam. The pivot for the upper feed dog arm is disposed upon an extension of the main lower feed bar which thereby provides horizontal motion to both the upper and lower feed dog arms.

Abstract: A sewing machine is disclosed which includes at least one regulatable operating instrumentality, such as, for example, an adjustable needle thread tensioner. Means are provided for generating signals indicative of different parameters which affect the ultimate overall stitch, such as, for example, fabric thickness at the seam, thread type, and pattern type. A central processor is provided with an algorithm for controlling the thread tension so as to maintain uniform stitch quality as a function of the different parameters.

Abstract: An inverted conversion press for producing easy-open metal container ends is provided, which combines the functions of end and tab presses. The press includes a tab forming station and an end forming station, disposed one beneath the other and rendered alternately operative by a vertically-reciprocable slide assembly. A method for producing an article, comprised of assembled workpieces, is also provided.

Abstract: A sailboard for wind surfing comprising a board to which a mast is connected by a heel joint. A sail is stretched on the mast. The heel joint comprises two opposed bushings, one coupled to the mast and the other to the board and a block of material of high elasticity is engaged in the bushings and coupled thereto to permit elastic pivotal movement of the mast by rocking of the bushings on one another. The block of material is resistant to water and heat. The lower bushing is coupled to an insertion pin which can be sealably and rotatably inserted in a recess in the board.

Abstract: The vessel comprises a pair of laterally spaced elongated hulls having a plurality of upstanding columns spaced therealong supporting a working platform in spaced relation above the hulls a distance slightly greater than the maximum anticipated wave height. The hulls buoyantly support the vessel in a low draft floating condition with the hulls having free-board. The hulls have ballast compartments to submerge the hulls and portions of the stabilizing columns to a distance of approximately half the effective height of the stabilizing columns which is slightly greater than maximum anticipated wave height, to maintain the vessel in a high draft floating condition with the platform elevated above the waterline. The columns stabilize the vessel in the high draft condition about roll and pitch axes. The working platform mounts either a drilling rig or a heavy duty crane or like operational equipment along the centerline of the vessel.

Abstract: By grasping a steel cable with a low cost portable self-tightening clamp that increases its holding force as the tensile pull force increases, one man can tighten steel cables of various lengths having bitter ends by using temporarily a single portable ratchet jack assembly to exert about 20 tons (20,000 KG) tightening force. Two similarly acting inexpensive clamps affixed to a barge deck hold the cable lines of various lengths without eyes in the end taut enough to bind barges together into one stiff unitary assembly, and permits the single ratchet (and portable clamp) assembly to be reused, thereby significantly reducing equipment inventory and cost.

Abstract: An intruder alarm security device includes a source of fluid under pressure which serves as a medium for oscillating a diaphragm at the throat of a horn to create an audible warning signal. The intruder alarm includes an actuator, a plunger assembly and connecting structure for coupling rotary movement of the actuator to longitudinal movement of the plunger assembly to open communication between the diaphragm and the source of fluid. The or connecting coupling structure includes a lost motion connection so that the plunger assembly is controlled by the actuator only to the point of opening the communication. And, the plunger assembly includes an orifice member for metering the flow of medium to the diaphragm, yet, first is capable of allowing any entrained particulate from a closure of the source to clear the device.

Abstract: Disclosed herein is a fluid pressure indicator for providing visual indication of the magnitude of a fluid pressure condition. The indicator comprises an optical element including a front surface for receiving ambient light and a rear, light-reflecting portion having three mutually perpendicular surfaces which define a cube corner having an apex remote from the front surface, and a one-piece, resilient, imperforate diaphragm in cooperative relationship with the rear, light-reflecting portion of the optical element, to provide a chamber between the interior of the diaphragm and the three perpendicular surfaces. The diaphragm is normally not in optical engagement with the three perpendicular surfaces, but is resiliently deformed into such optical engagement upon the application of a positive fluid pressure differential to the exterior of the diaphragm.

Abstract: Disclosed herein is a fluid pressure indicator for providing visual indication of the magnitude of a fluid pressure condition. The indicator comprises an optical element including a front surface for receiving ambient light and a rear, light-reflecting portion having three mutually perpendicular surfaces which define a cube corner having an apex remote from the front surface, and a one-piece, resilient, imperforate diaphragm in cooperative relationship with the rear, light-reflecting portion of the optical element, to provide a chamber between the interior of the diaphragm and the three perpendicular surfaces. The diaphragm is normally not in optical engagement with the three perpendicular surfaces, but is resiliently deformed into such optical engagement upon the application of a positive fluid pressure differential to the exterior of the diaphragm.

Abstract: In a reservoir comprising a container for liquid at least one portion of the top wall of the container is depressed to form a window, the depressed portion and at least a part of the surrounding area being transparent or translucent so that the reservoir can be filled with a liquid until the liquid is in visible contact on the under surface of the window with the surrounding part untouched.

Abstract: The present invention provides a storage container which is convertible into a bird nesting box, the container preferably having a snap-on lid or cover and being commonly available as a disposable receptacle for the packaging of consumable powders, granular materials or other food stuffs such as instant soft drinks, coffee, and the like. The container and the snap-on cover are provided with pre-stressed portions which can be readily removed, a measuring cup such as typically provided within such a container also having a pre-stressed portion thereof which can be removed to form a cylindrical sleeve-like member open at both ends. The measuring cup is further provided with spaced flanges or threads on the exterior surface thereof which can be fitted within the aperture formed on removal of the pre-stressed portion on the snap-on cover to hold the cup therein, the container forming a suitable nesting box on placement of the cover and cup assembly on the open end thereof.

Abstract: A cast tuyere has two independent cooling circuits for the nose and the body portions, respectively. The nose channel for the coolant having been formed by a removable frangible core around which the nose portion has been cast. The nose channel preferably additionally includes a rod extending centrally through it so as to define an annular passage for the cooling water.

Abstract: The scaling of the internal surfaces of vertical downflow fired heater tubes is decreased by a vapor-liquid mixing means located in the straight section of the tubes which have downward flow.

Abstract: An internal combustion engine includes at least one combustion chamber and an inlet conduit whereby air for combustion of fuel is introduced into the combustion chamber. The inlet conduit has a main inlet and an auxiliary inlet for introducing main and auxiliary air flows respectively into the inlet conduit. Filtered and heated air is passed through a humidifier and a preheater to an air suction control valve connected between the preheater and the auxiliary inlet to provide the auxiliary air flow. The air suction control valve operates in response to increase in pressure in the combustion chamber to reduce the flow of air from the preheater to the auxiliary inlet.

Abstract: Disclosed is an internal combustion engine comprising a cylinder head and a piston. A recess is formed on the inner wall of the cylinder head or on the top surface of the piston. The recess defines a combustion chamber when the piston reaches the top dead center. The inner wall of the cylinder head has a flat surface portion. The top surface of the piston has a flat surface portion. A squish area is formed between the flat surface portions of the cylinder head and of the piston. A groove is formed on the inner wall of the cylinder head or on the top surface of the piston so as to extend towards the circumferential direction of the piston. The groove communicates the squish area with the recess. The bottom surface of the groove is smoothly connected to the bottom wall of the recess so as to create a turbulence and a strong swirl motion of the combustible mixture in the recess due to the squish flow pushed out from the squish area when the piston reaches the top dead center.

Abstract: In the operation of an internal combustion engine, certain operating parameters, for example the length of fuel injection pulses, the ignition timing and the exhaust gas recycle rate can be adjusted on the basis of information related to state variables of the engine, for example the engine speed, the induction tube pressure, the air flow rate and the like. In particular, the injection pulse length may be determined from data stored in a memory and addressed by a pair of numbers related to the instantaneous values of engine speed and air flow rate. This type of open loop control is rapid and may be very exact but does not account for long-range changes in engine behavior due to wear, etc. For this reason, additional circuitry senses a further state variable, for example, the oxygen content of the exhaust gas or the engine roughness, and uses this information in a feedback loop to generate a correction signal which is then applied in a rate multiplier to the basic fuel injection datum.

Abstract: A reciprocating piston machine useful as a pump, a hydraulic motor or an internal combustion engine has a plurality of cylinders in a carrier surrounding a central shaft. The carrier is in turn surrounded by a ported manifold. The carrier and manifold are adapted for relative rotation one to another such that the cylinders periodically open to the ported manifold. Pistons within the cylinders each describe a path in the carrier tangent to a circle in the plane of rotation of the carrier. A gear fixed to the manifold housing about the central shaft induces relative motion between the manifold and the carrier by linkage including gears and shafts and connecting rods of the pistons.In the motor and pump mode, the machine is valveless, and in the engine mode a single valve per cylinder completes the valving functions necessary for an internal combustion engine. A valving cam fixed to the manifold housing biases valving lever arms as relative motion between the manifold housing and the carrier is accomplished.

Abstract: An improved engine control system for engines is disclosed. The preferred embodiment is a closed loop, free running control system comprising apparatus for (i) sensing an engine performance parameter, (ii) selectively adjusting an engine control parameter in response to a control signal, and (iii) controlling the engine control parameter to optimize the engine performance parameter. The control system is adapted to optimize the performance parameter by adjustment of the single engine control parameter. In the preferred embodiment, engine speed is utilized as the engine control parameter, and spark timing as the engine control parameter, although other parameters may be utilized. Other embodiments and improvements are disclosed.

Abstract: An engine control system is disclosed wherein torque or slip speed of a fluid coupling or torque converter is used for the control of an engine operating parameter, such as ignition spark advance. In the fluid coupling or torque converter, the respective speeds of the impeller and turbine are sensed by sensors which respond to the passing of each blade of the respective impeller and turbine. The speed signals are applied to computing means to produce a control signal corresponding to either slip speed or engine output torque, as desired, according to a predetermined functional relationship of the speed signals. The control signal is applied to control means which is operative to adjust a selected engine operating parameter. In a particular embodiment, the control means includes detecting means for determining changes in the value of the control signal and also includes a controller for the ignition spark advance which advances or retards the ignition in order to optimize the engine output torque.

Abstract: An injector apparatus particularly suited for injecting starting fluid into the cylinders of an internal combustion engine can be operated by the on-board compressed air system of a vehicle. The air, which may be taken from an air-driven starter motor or an air brake system, is used to actuate a piston causing starting fluid to be expelled from a metering chamber into the fuel cylinders of the vehicle's engine. The metering chamber is then refilled from a pressurized reservoir.

Abstract: A protective device for internal combustion engines and/or vehicles embodying same including means for detecting one or more abnormal conditions of a part of such engine or vehicle such as the temperature of a part, clutch slip, or excessive engine speed, and means activated by the detecting means for at least partially dethrottling the engine and optionally also declutching same and/or applying the brakes in the case of a vehicle.

Abstract: A jet pipe burner for heating the interior of an industrial furnace includes a jet pipe and a burner head positioned within the jet pipe. An air pipe and a gas pipe provide combustion air and fuel gas to the burner head. A gas-air mixer is connected to the air pipe and the gas pipe for mixing the combustion air and the fuel gas before they flow to the burner head. A valve, connected to the mixer, controls the supply of combustion air and fuel gas to the burner head. In one embodment a ring-shaped air duct is arranged coaxially with and laterally enclosing the burner head for cooling the burner, the ring-shaped air duct has nozzles which open into the jet pipe. A conduit connected to the source of combustion air delivers cooling air into the ring-shaped air duct. In another embodiment radially projecting cooling plates formed of heat resistant material are angularly distributed about the circumference of the burner head.

Abstract: A wood-burning furnace unit for insertion in an existing fireplace includes a metal firebox surrounded at its opposite sides, top and back in spaced relationship by a metal jacket to define an airspace between the jacket and firebox wall and air inlet openings into said airspace at the opposite sides of said firebox. The firebox has a front opening closed by glass doors and adjustable draft openings below such doors. Air blowers within the jacket at opposite sides of the firebox draw room air into the jacket and blow it rearwardly into heat exchange tubes which pass through the firebox from the back of the jacket airspace and discharge heated air back into the room from the front of the firebox. Baffling within the jacket distributes the room air to the various tubes. In one embodiment, there are both upper heat exchange tubes passing through an upper portion of the firebox and lower heat exchange tubes passing through a lower portion of the firebox. In a second embodiment, only the upper tubes are used.

Abstract: A solar collector having a frame-like wooden housing which contains therein heat absorbing material in the form of pellets of coal or "diced" automobile tires. This material is sealed within the housing by a transparent cover. The resultant sealed container allows a flow of working fluid to pass therethrough by way of a pair of perforated pipes. The collector is oriented to receive maximum solar radiation in order to heat the heat absorbing material. The working fluid which flows in contact with the heat absorbing material, absorbs heat thereform, and, by means of a circulating system which is not part of the invention is generally carried to a storage tank or the like for use at a later time.

Abstract: A solar collector comprising liquid-containing elements and a reflector. The reflector comprises overlapping plates which can be shifted into a first extended position imparting an approximately semicylindrical shape to the reflector and into a second collapsible position. The liquid-containing elements comprise a collector pipe or conduit enclosed by a protective tube. Radial elements extend in the longitudinal direction of the collector pipe and are attached thereto. The liquid-containing elements are rotatably mounted on the collector pipe.

Abstract: A fireplace standard assembly including a decorative fireplace standard, a sleeve connector member connected to the rear surface of the fireplace standard and adapted to receive one of the front upright grate bar members of a log grate to resemble an andiron.

Abstract: A ventilation system for removing fumes in the space above a cooking surface includes a hood located above the cooking surface which forms an entrainment chamber between the hood and the cooking surface, an air intake means having a blower which introduces outside air into the entrainment chamber and exhaust means in operative relation with the hood and including a filter member through which the air and the cooking fumes are passed to filter out the grease and to exhaust the filtered air and gasses into the atmosphere. The improvement is in the provision of an intake blower and an exhaust blower and additionally, an air spreading and diffusion means for forming an air pattern in the entrainment chamber corresponding to the planar area of the cooking surface. The diffused inlet gasses thus mix with the heated fumes and gasses from the cooking surface and therefore eliminates the need to pretemper the air entering the entrainment chamber.

Abstract: A heat storage vault in the form of an insulated enclosure having therein a plurality of serpentine pipes each with lengths extending back and forth within the enclosure with the lengths substantially equidistantly spaced both from the closest lengths of the common serpentine pipe and from the closest lengths of the other adjacent pipes, and a heat storage medium filling the enclosure and the space between the serpentine pipes and adapted to receive heat from at least one of the serpentine pipes when a heated fluid is conducted therethrough, store the heat within the heat storage medium, and provide heat to at least one other of the serpentine pipes as a fluid is circulated therethrough.

Abstract: A blood sample collection device and procedure which employs a series of pre-evacuated rubber-capped vials for the drawing of successive samples. A hollow cylindrical carrier is used consisting of two cups which are integral base-to-base defining a main chamber and a mid-chamber. A soft rubber disc encloses the mid-chamber and defines an antechamber communicating with an intravenous needle. A piston carrying a double-ended auxiliary needle is slideable endwise in the mid-chamber. The antechamber is enclosed by transparent material such as plastic and is of such size as to admit only a trace of blood through the intravenous needle under venous pressure before the vial is connected, the blood in the antechamber serving as a visual telltale informing the user that the needle is in the lumen of the vein.

Abstract: Local body heat source sensing instrumentation comprises(a) a probe including a heat conductive, metallic tip having an outer surface shaped for application in heat transfer proximity with a patient's body,(b) non-metallic material at the inner side of said tip, said material characterized as electrically insulative and heat conductive, and(c) an electrically energizable element embedded in said material at a location to detect heat transfer between said surface and source, via said tip and said material.

Abstract: The system of the invention includes provisions for administering a plurality of tests sequentially to a subject, with each test including a plurality of programmable visual, auditory and/or tactile stimuli and programmed desired responses. The system includes novel circuitry for interrelating the operation of the stimuli and the responses and determining premature, incorrect and correct responses and providing a printout of the reaction time of each response. The system also indicates a response which goes beyond a set maximum time period.

Abstract: An electrode suitable for use in conducting electrical signals from the skin of a living animal, the electrode having a conducting member constituted by an electrically conducting plastics material and an electrically conducting chloride gel carried by a porous foam disc for contact with the skin, the porous foam disc being spaced from the conducting member by a non-electrically conducting element which is loaded with silver to provide electrical connection between the gel and the member.

Abstract: A cardiac monitor generates infrared light which is directed at the skin of an individual to be monitored. The light reflected from the skin is detected and automatically controlled. The pulsatile flow of blood in the underlying vascular network modulates the reflected light which is detected by a photo sensitive sensor which generates a signal indicative of the modulations. The modulated signal is coupled to a pulse detector which filters our spurious signals and generates one pulse for each systole in a cardiac cycle. The systolic pulse is coupled to a pulse interval to heartbeat rate converter which converts the interval between each succeeding systolic pulse into a signal which is preferably continuously and visually displayed to provide a continuous monitor of the heartbeat rate of the monitored individual.

Abstract: A method and apparatus are disclosed for non-invasively detecting the location of a constriction in a vessel through which a conductive fluid is flowing by externally measuring the streaming potentials generated by the flowing fluid. In an exemplary embodiment, the present invention detects the location of atherosclerotic lesions in human arteries through which the blood is being pumped in a pulsatile manner. The lesion creates a turbulent flow in the blood which in turn results in a significantly larger streaming potential being generated. The apparatus comprises two closely spaced apart, passive electrodes, which can be relatively movably mounted on a housing and a voltage detecting device, such as an oscilloscope, coupled to the electrodes.

Abstract: An improved carrier release sheet is described for use with biopotential skin electrodes of the type including a stud, a pad preloaded with an electrically conductive material and in electrical contact with the stud, a base sheet having an aperture and secured to said stud so that the pad is exposed through the aperture to one side of the base sheet having an adhesive coating. The carrier release sheet includes a cylindrical cavity of an improved configuration for receiving the preloaded pad of the electrode in a noncontacting relationship and a tab integrally formed with the remainder of the carrier release sheet so as to enable quick and easy release of the carrier sheet from the adhesive coating.

Abstract: A dry-state bioelectrode having a self-sealing receptacle for receiving electrolyte and/or medicament fluid contents. The receptacle is attached at its opening to a sheet-like flexible base member having an opening in common with the receptacle opening, the bottom of the base member being adapted for fixation at a skin surface. A portion of the skin surface is exposed to the fluid contents of the receptacle through the common opening. An injection site communicates through the wall of the receptacle and provides controlled access for filling. Upon completion of filling, the receptacle self seals, retaining the fluid contents therein for application of iontophoresis treatment or other procedures requiring use of a potential gradient. An electrode plate is supported at an interior surface of the receptacle for supplying the desired electric potential.

Abstract: Portable apparatus is provided for use by a rescuer in administering cardiopulmonary resuscitation to a patient or for use as a training aid in the application of cardiopulmonary resuscitation. A light weight, inflatable, fluid-filled, foam or other resilient cushion has a pressure gauge attached thereto, and the cushion is placed on the patient's chest. Force is applied by the rescuer onto the cushion and the pressure gauge displays the force applied so as to enable the rescuer to observe and control the force being applied to the patient's chest. A timer may also be provided with the pressure gauge to enable the rescuer to properly time the application and release of force to the patient's chest.

Abstract: A cervical traction unit which fits over and is retained on one end of a mattress or similar support. The unit has a platform which rests on the mattress and carries a sliding carriage with a raised neck supporting yoke to receive the neck of a patient lying on the mattress. The carriage is elastically biased to apply a controlled and indicated traction force to the patient's neck, without the need for straps or harnesses.

Abstract: An ankle protector for inhibiting lateral ankle bending motion assoicated with strains including an elastic stocking dimensioned and configured to snugly embrace the instep, heel, and ankle of the wearer; a semi-rigid heel cup positioned within the stocking in the heel region thereof, which is dimensioned and configured to snugly embrace the heel of the user; and a pair of elongated stays secured to opposite sides of the stocking which have their lower ends pinned to opposite sides of the heel cup to facilitate pivotal motion thereof with respect to the heel cup only about an axis parallel to the axis about which the ankle flexes in normal walking or running activity. To enhance the lateral support, a pair of straps are provided, each having one end secured to the bottom of the stocking, which are adapted to encircle the instep and ankle of the wearer in criss-cross fashion.

Abstract: A surgical head drape of a single sheet of flexible material which is a barrier to bacterial migration provided with a pair of opposed and spaced apart side slits extending oppositely inwardly of both side edges to define a connecting tab portion integrally connecting a base sheet panel portion adapted to be inserted under the patient's head and covering the head end portion of an operating table with a turban sheet panel portion adapted to be wrapped around the patient's head with the turban sheet panel portion folded to overlie the base sheet panel portion during initial presentation (i.e., approach to the patient). The slits are dog-legged or jogged at the inner end portion thereof defining an offset connecting fold line therebetween and the drape is folded therearound to position the turban sheet panel portion on the base sheet panel portion with the leading edges of the base and turban sheet panel portions being offset so that the base sheet panel portion extends beyond the turban sheet panel portion.

Abstract: The invention relates to a self-propelled shark-proof cage which is provided with at least one access opening and a propeller mounting frame having pivot means coupling it to the cage so that the propeller mounting frame is pivotal about two axes at right angles to each other, and the propeller mounting frame carries on it an air motor and a propeller. The frame is provided with buoyancy means so that it can be made to be of approximately the same gravity as sea-water, and the air motor is driven by compressed air so that the cage can be propelled through the water, thereby enabling abalone divers to collect abalone without fear of predators and, beacause of less exertion, for longer periods of time.

Abstract: A zippered elastic tubular support for body extremities such as an ankle or leg support useful in treating various body disorders and more particularly, useful for the treatment of venous diseases of the leg. In the preferred embodiment, there is disclosed the elastic support hosiery comprising a tubular stocking adapted to be placed over the foot, surrounding the ankle and at least the lower calf of the user. A zippered opening is provided in the stocking longitudinally thereof, such zippered opening commencing at its lower end at approximately the interior malleolus of the ankle and extending upwardly, longitudinally of the hosiery permitting the hosiery, when the zipper is open, readily to be pulled on over the ankle, and when closed, tightly and firmly supporting the body extremity enclosed thereby. The opening may extend for only a portion of the support or to the upper end thereof.

Abstract: A highly conformable laminated absorbent dressing which comprises an absorbent pad or layer and an elastic backing film which is both elastic and easily deformable and which preferably is highly thermoplastic and easily heat-sealable. The backing film possesses an elastic recovery from 50 percent stretch of at least about 75 percent, preferably at least about 90 percent; a rubber modulus of not above about 2,000, preferably not above about 1,000, pounds per square inch at 50 percent elongation; a Gurley stiffness of not above about one at a thickness of one mil; and preferably is adapted to form permanent heat seals to paper or boxboard at peak temperatures not above about 350.degree. F. in no more than 4 seconds of clamping time. Various other relationships between the backing film of this invention, the absorbent pad and various types of facing layers are described and claimed.

Abstract: A dispersive electrode has been devised for electromedical equipment consisting of a thin sheet or layer of electrically conductive material covered on one or both sides by a flexible laminate. To facilitate attachment to the skin of a patient during electrosurgery, the laminated sheet may be secured to a resilient backing member preferably having bifurcated ends to which an adhesive is applied in order to effect a secure connection to various parts of the body and to more readily conform to the contour of different parts of the body. The pad includes a tab projecting from one end of the conductive layer which tab is preferably of rounded or somewhat circular configuration and adapted to be inserted into a snap-type connector.