Abstract: Equipment with an incorporated cardiac radio-frequency receiver (CPR) for temporary heart stimulation from the outside in case of open-heart operation, suitable to be left insitu to provide permanent stimulation if subsequently necessary. The equipment is formed of an electrode with epi-cardial stimulation tip, and a quick jack-type connection emerging from said cardiac radio-frequency receiver and suitable to rapidly and easily connect a permanent pacemaker.

Abstract: A lead-free composition capable of being applied as a film and hardening to form a protective layer on the back of a mirror comprises a fluid organic resin and a corrosion inhibitor selected from the group consisting of dicyandiamide, metal or acid salts of dicyandiamide, hydrogen cyanamide, and 2-cyanoacetamide. The organic resin may be any thermoplastic or thermosetting resin suitable for coating the reflective and other metallic layers of the mirror. Exemplary resins include alkyd resins, acrylic resin, modified alkyd resins, polyesters, urethane oils, vinyl halide polymers or copolymers, oleoresinous varnishes, nitrocellulose compositions, phenol-formaldehyde resin varnishes, and epoxy resins. Preferably, the resin is an alkyd or modified alkyd resin. The aforementioned corrosion inhibitor may be present in an amount from about 0.1 to 20 weight percent, preferably 0.5 to 10 weight percent, of the organic resin coating system. The resin system should be essentially free of lead and lead salts.

Abstract: A combination drill and drill adapter comprises a drill having a shank portion for mounting the drill, and an adapter having an opening for receiving the drill. The drill shank is generally cylindrical in shape and, at a portion adjacent to an end of the drill, includes a plurality of substantially flat sides parallel to the longitudinal axis of the drill extending along at least a portion of the shank. The drill adapter opening has a depth greater than the length of the flat sides of the drill for receiving the drill shank end portion. A mounting member is at the opposite end for mounting the adapter in a drilling device.

Abstract: A composition capable of being applied as a film and hardening to form a protective layer on the back of a mirror comprises a fluid organic resin and a corrosion inhibitor selected from the group consisting of dicyandiamide and metal or acid salt thereof. The organic resin may be any thermoplastic or thermosetting resin suitable for coating the reflective and other metallic layers of the mirror. Exemplary resins include alkyd resins, acrylic resins, modified alkyd resins, polyesters, urethane oils, vinyl halide polymers or copolymers, oleoresinous varnishes, nitrocellulose compositions, phenol-formaldehyde resin varnishes, and epoxy resins. Preferably, the resin is an alkyd or modified alkyd resin. The dicyandiamide or metal or acid salt of dicyandiamide may be present in an amount from about 0.1 to 20 weight percent, preferably 0.5 to 10 weight percent, of the organic resin coating system. The resin system should be essentially free of lead and lead salts.

Abstract: A consumable antigas or antiflatulent composition is produced by combining a water soluble agglomerated maltodextrin and a fluid, nonaqueous, defoaming or antifoaming composition such as simethicone or silicone, mineral or other oils containing silica to form a granular mixture. The granular mixture may be prepared in a unit dose in granular form or as a compressed tablet or capsule.

Abstract: An eight-man rowing shell comprises an elongated hull made of a laminate of a fiber composite skin and having a pointed bow and stern and a hull surface tapering smoothly to a maximum beam and draft therebetween, the hull surface having a waterline length of at least 56.0 feet, a hull entry angle between about 3.8 and 4.3 degrees, a hull exit angle between about 5.0 and 5.5 degrees, a maximum draft below the waterline of between about 0.595 and 0.610 feet, inclusive, and a maximum beam of between about 1.82 and 1.85 feet, inclusive, when the shell is normally loaded.

Abstract: A quick assembly attachment mechanism comprising an elongated stud member having two notches formed in its surface and a receiving member that non-rotatably engages the stud member and includes at least two bendable tabs that are bent into the notches to lock the stud against longitudinal motion. The receiving member includes access openings to permit the tabs to be bend back out of the notches so that the stud may be removed. The attachment mechanism is particularly suited for use in connecting steel components such as steel hinges to steel doors.

Abstract: A grinding wheel radius dresser including a dresser housing, a spindle having a tapered outer bearing surface, a drive means for rotating the spindle and a damage resistant bearing. The bearing includes a tapered inner bearing surface produced by molding a low friction bearing material to match the tapered spindle bearing surface, and is mounted in the housing with the spindle bearing surface in rotating contact with the inner bearing surface. The bearing is preferably spring mounted to slide longitudinally into the housing in the event of an impact further minimize the likelihood of any damage.

Abstract: A method of teaching a student and using a computer game teaching system, a computer game and educational information contained in one or more tutorial modules. A plurality of questions contained in the tutorial module are presented to the student at pause points in the game, the scoring algorithm for the game is modified as a result of positive responses to the questions to permit higher probability of scoring in the game. The student's responses to the questions are stored in a scores database which is transmitted for analysis, at a central location which analyzes the responses from many students and prepares a report for transmittal to a parent or teacher to guide the student's further education.

Abstract: A woman's bodysuit for exercising or swimming comprises an outer covering for encasing at least a portion of a woman's torso, including the bust, abdomen, hips and rear regions. The covering extends below the arms and around at least a portion of the back and includes shoulder straps forming openings for the neck and arms. A bra portion is provided beneath the outer covering, the bra portion including a full bra liner covering the breasts and a separate partial bra liner beneath the full liner supporting the undersides and sides of the breasts. The full and partial bra liners are each secured along common edges to the outer covering centrally between the shoulder straps at the neck opening and on either side at the arm openings. An elastic strap is secured along a bottom edge of the bra portion and is secured to the outer covering in the region behind or below the arms. The outer covering, full bra liner and partial bra liner are made of stretchable natural or synthetic fabrics, or blends thereof.

Abstract: A combination pressure and vacuum pump for food or drink containers including a pump housing having a pump cylinder therein, a pump head adapted for sealing engagement with a valve stopper on a food or drink container, and a piston in sliding airtight engagement with the pump cylinder; the pump cylinder, pump head and piston defining a pump chamber. A handle is provided for moving the piston and the pump cylinder relative to one another to pump a gas into or out of the food or drink container. The pump chamber is connected to the valve stopper via a first opening when the pump head is sealed to the valve stopper and to the atmosphere via a second opening through a combination pressure and vacuum valve, the combination valve being switchable from a vacuum position to a pressure position.A combination pressure and vacuum valve stopper is also shown which includes a valve element reversible between a pressure position and a vacuum position to convert the stopper between pressure and vacuum use.

Abstract: A pedotopography apparatus which measures the shape of a foot by producing a moire fringe pattern representative of the underside of the foot, capturing and storing an image of the moire fringe pattern in an image storage buffer, analyzing the image to locate at least two points of interest on the foot and computing information corresponding to the distance between the two points. In the preferred embodiment the captured image is processed by Sobel convolution to enhance edges in the image. Both an apparatus and a method of processing are disclosed.

Abstract: A temperature controlled soldering iron with a heating element having a positive temperature coefficient arranged as one leg of a Wheatstone resistance bridge such that the voltage across the heating element signals the temperature of the soldering iron. A comparator is connected across opposite nodes of the bridge and turns off a switching element to cut current flow through the bridge when the heating element is above the desired temperature. A pulse generator continuously supplies pulses to briefly restart current flow through the bridge and allow the temperature to be sensed. The pulses are short duration and occur regardless of whether the comparator has previously turned off current flow, and independent of the temperature of the heating element. After each pulse the comparator controls current flow by leaving the flow on or turning it off according to the temperature of the heating element as measured by comparison of the voltages on the opposite nodes of the bridge.

Abstract: An offset printing plate and method of manufacturing comprising providing a hard, hydrophilic supporting base material of steel, depositing a layer of dull, porous, ink-rejecting chromium directly onto the surface of the steel base material, the chromium layer having a thickness no greater than one micron and being sufficiently thin and porous to permit the desirable properties of hardness and hydrophilicity of the subjacent steel base material to manifest themselves through the chromium layer during printing, and sufficiently thin to permit removal of the chromium layer from a selected area of the offset printing plate by scraping to expose the subjacent surface of the steel base material.

Abstract: A heat exchanger assembly comprises a pair of header members and a plurality of heat transfer tubes passing between the headers members. The heat transfer tubes are adapted to transfer heat between fins on the exterior of the tubes and a working fluid in liquid or gaseous phase within the tubes. A pressure drop minimizing tube passes between the headers and has a cross sectional area significantly larger than the heat transfer tubes. The pressure drop minimizing tube is adapted to carry the working fluid in a gaseous phase either as an inlet, when the heat transfer assembly is utilized as a condenser, or as an outlet, when the heat transfer assembly is utilized as an evaporator. A member connects the pressure drop minimizing tube at one end to at least two of the heat transfer tubes for condensation to a liquid, when the assembly is utilized as a condenser, or transferring gaseous working fluid from the heat transfer tubes to the pressure drop minimizing tubes, when the assembly is utilized as an evaporator.

Abstract: A heat exchanger with an internal bypass valve wherein the open end of a bypass tube mounted within a heat exchanger tube forms a valve seat for the bypass valve. A valve head mounted on a valve rod is spring loaded against the valve seat in the preferred design. The length of the contact arms on the valve body controls the valve activation pressure. The heat exchanger tubes may be mounted in parallel and the bypass valves may be mounted in the same direction or in opposite directions to permit bidirectional bypass flow.

Abstract: A fuel delivery system for refuelling airplanes comprising a delivery station mounted on an airplane refuelling tank-vehicle and movable from a rest position wherein it is completely received within a suitable, practically inaccessible housing formed on the tank to an operative position wherein it is completely outside the housing and perfectly accessible to the operator who is carrying out the refuelling, operation; the supporting frame of the system, which is of a simple and solid construction is controlled to move from the one position to the other preferably through hydraulic mechanical means.