Abstract: Head and neck squamous cell carcinomas (HNSCC) represent a group of metastasizing tumors with a high mortality rate in man and animals. Since the biomolecule ozone was found to inhibit growth of various carcinoma cells in vitro we here applied the highly aggressive and lethal VX2 carcinoma HNSCC tumor model of the New Zealand White rabbit to test whether ozone exerts anti-tumorous effects in vivo. Therapeutic insufflation of medical ozone/oxygen (O3/O2) gas mixture into the peritoneum (O3/O2-pneumoperitoneum) at an advanced stage of tumor disease led to a survival rate of 7/14 rabbits. Six of the seven surviving rabbits presented full tumor regression and the absence of local or distant lung metastases. Insufflation of pure oxygen (O2) resulted in a survival rate of 3/13 animals accompanied by full tumor remission in two of the three surviving animals. Of the fourteen sham-treated animals only one had spontaneous tumor remission and survived.

Abstract: Head and neck squamous cell carcinomas (HNSCC) represent a group of metastasizing tumors with a high mortality rate in man and animals. Since the biomolecule ozone was found to inhibit growth of various carcinoma cells in vitro we here applied the highly aggressive and lethal VX2 carcinoma HNSCC tumor model of the New Zealand White rabbit to test whether ozone exerts anti-tumorous effects in vivo. Therapeutic insufflation of medical ozone/oxygen (O3/O2) gas mixture into the peritoneum (O3/O2-pneumoperitoneum) at an advanced stage of tumor disease led to a survival rate of 7/14 rabbits. Six of the seven surviving rabbits presented full tumor regression and the absence of local or distant lung metastases. Insufflation of pure oxygen (O2) resulted in a survival rate of 3/13 animals accompanied by full tumor remission in two of the three surviving animals. Of the fourteen sham-treated animals only one had spontaneous tumor remission and survived.

Abstract: The subject matter of the invention is the use of a device for the application of a fluid which features ozone or ozonized oxygen into a human or animal body and a device for this. The creation of a use and device which use the beneficial effects of ozone to combat tumors without causing side effects which are damaging to someone's health is achieved by applying the fluid intraperitoneally.

Abstract: A lift mechanism for mounting on the back of a motor vehicle having a trailer hitch. It includes a rearwardly extending tube mounted on the trailer hitch. A main hoist column is upstanding on the rearwardly extending tube. The main hoist column has an upper end which is attached to the back of the motor by a connection which allows both pivotal and back and forth movement of the upper end. First and second platforms are mounted by sleeves to move up and down on the main hoist column with the sleeves guided by rollers. Each platform can be swung between a horizontal position and a vertical position. An electric motor driven drum is provided for each platform with a cable wound around each drum having an end connected to its respective platform. A removable extension attaches to the rearwardly extending tube to provide a lower extension for the main hoist column.

Abstract: A safety switch, operable by a removable coded actuator, is designed for mounting on a support surface in four different orientations. The switch has a substantially square cross-section and grooves or holes for receiving mounting fasteners extend across each side of the switch housing, the grooves being located in a common plane intermediate the ends of the housing.

Abstract: For the production of a coating formed by cathode sputtering, a target made from an alloy of gold and preferably vanadium is used. During the cathode sputtering, nitrogen gas is used as the reactive gas. The result is the formation of vanadium nitrides on the substrate to be coated. By varying the nitrogen content, the proportion of the vanadium nitrides can be changed thereby causing the appearance and the hardness of the coating to also change. This change in coating characteristics can accommodate a broad range of requirements avoiding the necessity of using different targets for different coating characteristics.

Abstract: Coating of components and shapes by cathode sputtering of target material of a first cathode system (6) with concentration of a first discharge space (plasma cloud) in the vicinity of the target surface by a spatially closed magnetic field (plasma trap) opposite the target (12). The field strength is reduced in front of the target surface by an additional magnet associated with a lateral boundary of the target.

Abstract: An apparatus for testing the opening pressure of a relief valve has a clamp removably secured to the bonnet of a relief valve. The clamp has four upstanding bolts slidably held in T-shaped slots. The bolts mount the base plate of a frame which carries a lifting cylinder and transducer. The cylinder connects to the relief valve stem and applies a lifting force thereto. The transducer measures the amount of force needed to open the valve. The frame is removable from the clamp which provides access to the relief valve adjustment nut. Adjustments in the relief valve opening pressure can be made without requiring removal of the clamp. A calibration adaptor fits on the frame to allow testing of the transducer in situ.

Abstract: An electrical switch for use as a safety switch for doors of lifts or elevators, the contact push rod of which is actuated by a switching roller when the roller is turned by means of an inserted actuating member. The switching roller comprises two axially spreadable switching roller portions that can be spread against the force of a spring by a pin specially provided for that purpose on the actuating member; if there is no pin on the actuating member, the roller strikes a stop before the switch is closed.

Abstract: An electrical interlock comprising a switch operated by a rotatable cam member coupled to the movable switch contacts by a longitudinally movable slider. Rotation of the cam member, which is contained within the same housing as the switch contacts, is caused by engagement, in slots in the periphery of the cam member, of an actuator mounted for movement relative to the switch housing.

Abstract: A parallel-bivalent apparatus functioning as an absorber heat pump and as a boiler for heating a heat carrying medium, includes a condenser, an evaporator, an absorber and an expeller forming the boiler. The heat carrying medium is passed through the absorber. The apparatus further includes a heat exchanger for poor and rich solutions. The heat exchanger receives poor solution from the expeller and applies the poor solution to the absorber through an expansion valve. A bypass conduit circumvents the heat exchanger and is arranged for carrying one of the solutions between the expeller and the absorber. A valve is contained in the bypass conduit for opening the bypass conduit when the flow temperature of the heat carrying medium falls below a predetermined value. Further, heat exchanging surfaces in the absorber are so dimensioned as to effect thereon condensation of flash gas generated by expansion of the poor solution upon passage through the expansion valve.

Abstract: The subject invention relates to an improved steady rest for use in a portable heavy-duty apparatus for machining large rotary work pieces. The apparatus includes a heavy-duty portable base and a cutting assembly for cutting the large rotary work pieces. The steady rest includes a pedestal releasably secured to the base. A jaw support is mounted on the pedestal. A pair of C-shaped movable jaws is mounted on the jaw support positionable in a selected attitude for receiving the rotary work pieces. A bridge connects the upper ends of the jaws to form a complete circle around a portion of the large rotary work piece. A roller is mounted on each of the jaws for rotatably supporting the rotary work piece. A brake is mounted on the jaws for releasably holding the rotary work piece.

Abstract: A snap-action switch having a housing, a push button and return springs therefor, a pair of contact assemblies and a pair of contact bridges between the contact assemblies, a jump member to alternately move the contact bridges against and away from the contact assemblies, a single stationary magnet on the housing, the jump member including a soft iron leg or plate to engage and be retained by the magnet, and the jump member also including a soft iron armature or plate movable with respect to the leg of the jump member toward and away from the magnet, and a bias spring alternately bearing at one end against the push button and jump member and alternately bearing at the other end through a thrust member or plate to the soft iron armature and the push button.

Abstract: The subject invention relates to a portable, heavy-duty apparatus for machining large rotary devices. The apparatus includes a heavy-duty, portable base for supporting the apparatus on an uneven surface; and a pair of movable pedestals are adjustably mounted on the base to accommodate work pieces of varying sizes and lengths. A cutting element is adjustably mounted on a cutter support for positioning the cutter in a selected position and attitude.

Abstract: A pipe and tube end preparation apparatus for simultaneously cutting an inside and an outside chamfer on a tube end is herein disclosed. The apparatus generally includes a tube holder and a housing connected to the tube holder. A head carriage mechanism is connected to the housing. The head carriage mechanism is progressively axially movable with respect to the tube holder and the housing. A drive train is rotatably supported by the head carriage mechanism. A cutter head assembly is fixed to the drive train. The cutter head assembly includes an inside chamfer cutter and an opposed outside chamfer cutter, which acts as a cutting guide for the inside chamfer cutter. A tube end, which is to be prepared, is secured by the tube holder. The drive train rotates the cutter head assembly with respect to the tube end. The head carriage mechanism advances the rotating cutter head assembly into cutting engagement with the tube end, thus simultaneously forming an inside chamfer and an outside chamfer on the tube end.