Abstract: There is disclosed an improved prosthesis coated, respectively, with an ionic surfactant, an antibiotic and/or antithrombiotic agent and treated with an immobilizing ionic exchange compound, to remove un-antibiotic bound ionic surfactant. The drug may be encapsulated within phospholipid vesicles which are bound to the prosthesis.

Abstract: There is disclosed an improved prosthesis coated, respectively, with a cationic surfactant, an antibiotic compound and treated with an cationic exchange compound, to remove un-antibiotic bound cationic surfactant.

Abstract: A highly maneuverable water craft for recreational enthusiasts with two hydraulically controlled and driven reversible propellers directionally fixed to a toroidal peripheral hull section which encircles a thinner interior platform section. The toroidal exterior hull provides stability for the platform in water, allowing the water craft to quickly spin, translate, stop and start. The directionally fixed propellers are not impacted by translation or spin and provide rugged and simplified construction. Placement of two fixed reversible propellers on the peripheral hull section provides maximum turning torque and allows elimination of a rudder or directional actuators. Control is provided by a novel pilot actuator and four-way valves assembly. Bumper strips, propeller guards, handholds and deadman switches can be provided for safety in handling this extremely maneuverable water craft.

Abstract: A fuel mixture injection apparatus associated with the carburetor of an internal combustion engine designed to improve engine efficiency by delivering a mixture of vaporized gasoline, steam and air directly to the carburetor. A portion of the fuel supplied by the fuel pump is diverted through a metering valve into a closed chamber where it is sprayed over a perforated vaporizer grid heated by a double loop of copper tubing through which hot engine coolant is ducted. The gasoline vapor is then ducted either into the carburetor or directly into the intake manifold. Simultaneously, water from a reservoir flows through a line in response to engine load and temperature conditions. The line passes through the closed chamber where the water is preheated. The line then leads to a heat exchanger connected to the engine's exhaust manifold where the water is converted to steam. From the heat exchanger, the steam is ducted either into the carburetor or directly into the intake manifold.

Abstract: A gasoline vaporizer associated with the carburetor of an internal combustion engine designed to improve the engine efficiency by delivering gasoline vapor directly to the carburetor.A portion of the fuel supplied by the fuel pump is diverted through a metering valve to a close chamber where it is sprayed over copper tubing through which hot water from the engine cooling system is circulated.Gasoline vapors thus produced are drawn into the venturi of the carburetor by the engine suction, or injected directly into the intake manifold.

Abstract: A method of preparing a surgical vascular graft wherein a length of graft material carries an absorbed coating of tridodecyl methyl ammonium chloride (TDMAC) surfactant and an antibiotic bound thereto. A length of graft material such as polytetrafluoroethylene or Dacron is soaked in a 5% by weight solution of TDMAC for 30 minutes at room temperature, air dried and then washed in distilled water to remove excess TDMAC. The graft carrying the absorbed cationic TDMAC surfactant coating is incubated in a solution of negatively charged antibiotic for one hour, washed in sterile water to remove unbound antibiotic and stored for use in the operating room.

Abstract: A vinyl halide paste polymer of low viscosity may be produced by adding an alkaryl sulphonate emulsifier to the polymer latex after polymerisation but before isolation. This gives a polymer which can be made into a paste in known fashion.

Abstract: The present invention relates to the manufacture of beta-isopropylnaphthalene hydroperoxide, an intermediate product in the manufacture of beta-naphthol.

Abstract: An early ripening yellow-green apple with uniformly round form and a smooth skin, the fruit having a high total solids and acid level making for excellent keeping qualities. The leaves of the new tree resemble those of standard Red Delicious while the color of the skin of the fruit is slightly greener than that of standard Golden Delicious.