Abstract:
A metal oxide-hydrogen battery having an outer safety shell. The battery to be used in a confined area such as in an aircraft or manned spacecraft, and includes a pressure vessel that contains at least one cell module. Hydrogen gas under pressure is confined within the pressure vessel and is impregnated in the cell modules. An outer shell, preferably formed of molded plastic, is disposed around the pressure vessel and a vent conduit connects the space between the vessel and the shell with the exterior. Any hydrogen that accidentally leaks from the vessel is captured in the space and vented to the exterior.
Abstract:
A metal oxygen-hydrogen battery having sealed cell modules with electrolyte containment and hydrogen venting. The battery includes an outer pressure vessel containing a plurality of cell modules, each having a positive and negative terminal and containing a liquid electrolyte such as potassium hydroxide. Each cell module is enclosed in a flexible sealed bag which is impervious to the flow of the electrolyte. The bag is a multi layer structure preferably composed of thermoplastic film. Each bag is provided with a vent which is permeable to the flow of hydrogen gas but impermeable to the flow of the electrolyte. Electrical leads are connected to the terminals of each cell module and extend in sealed relation through the bag.
Abstract:
A metal oxide-hydrogen battery having an outer sealed pressure vessel including a generally cylindrical shell. A plurality of generally rectangular cell modules are disposed in the shell and extend longitudinally of the shell. Each cell module has at least one positive electrode and a negative electrode. Separating the cell modules are heat transfer fins composed of a material having a high coefficient of thermal conductivity. The opposed edges of each fin are provided with flexible flanges that engage and complement the inner surface of the cylindrical pressure vessel shell and serve to transfer heat from the cell modules to the vessel shell.
Abstract:
An oil field jar includes a barrel and mandrel selectively interconnected by a ball transfer mechanism so that pulling upwardly on the jar causes a ring spring assembly to be stressed. As the spring assembly reaches its limit of stroke, the ball transfer mechanism trips so that the mandrel moves relatively freely with respect to the barrel. A hammer and an anvil carried by the mandrel and barrel then impact to create an upwardly directed jar on the fish to which the tool of this invention is connected. The ball transfer mechanism includes a plurality of balls which move both axially and radially of the tool during operation.
Abstract:
There is disclosed a shock sub for incorporation in the lower part of a drill string for damping oscillations of the bit and drill string during drilling. The shock sub incorporates a spring assembly including a multiplicity of substantially annular ring springs that exhibit a spring rate of less than about 25,000 pounds per inch of deflection. This is a continuation of application Ser. No. 849,718, filed Nov. 8, 1977 now abandoned.
Abstract:
A riding tractor with an elongated longitudinal frame is provided with a vertical crankshaft internal combustion engine having opposed pistons aligned in the longitudinal vertical plane of the tractor. In operation of the engine a dynamic force couple is created by the vertical spacing of the cylinders which induces vibrations tending to pivot the engine about its base, which is secured to the frame of the tractor. The frame has a relatively large moment of inertia about its wheeled support which effectively resists the rocking movement of the engine in the longitudinal plane of the tractor. The engine crankshaft includes an output shaft portion extending downwardly from the engine to which V-belt pulleys are connected for driving the drive wheels of the tractor and an underslung rotary mower by appropriate V-belts. In one version of the engine each cylinder has its own carburetor, intake manifold, exhaust manifold and muffler. In a second version of the engine, the air intake manifold and ports are located at one lateral side of the engine and the exhaust ports and manifold are located at the other lateral side of the engine. This provides maximum isolation of the carburetor from the hot exhaust system. In a third version of the engine both air intake and exhaust manifolding and ports are located on one lateral side of the engine. In the second version of the engine the intake manifold and carburetor are disposed below the exhaust manifold and muffler so that the heat rising from the exhaust manifold and muffler will not pass over the carburetor.