Abstract:
A marine engine exhaust assembly (7) is provided with water flow path control means which minimize back pressure. Lower intermediate elbow portions (8) and the respective bullhorn upper legs (12) are formed and joined in a manner to provide a continuous common gas-water passage which is axially linear in a fore-to-aft direction. The common gas-water passages are formed to provide a gradual reduction in cross-sectional area from top to bottom. The wall contours of the intermediate elbows gradually merge from circular at the upper end to generally elliptical at the lower end. In addition, the wall contours of the upper bullhorn legs are generally elliptical (Fig. 5) at their upper ends for communicating with the intermediate elbows, and gradually merge into a rectangular shape (Fig. 6) in the area of the bullhorn bends (13), which continues on to adjacent the bullhorn discharge portion. The leading edges of gas-water separator plates (25) are formed with a generally V-shaped downstream curve (28) which provides a slicing edge for the water. A gimbal housing (33) has water-carrying lightenining pockets (38) which connect from the bullhorn to drain holes (37) in the housing body. The lightening pockets are short and terminate adjacent their respective drain holes. The inner pocket ends are broadly curved (39) in the direction of the respective drain holes.
Abstract:
A spark ignition interrupt system is provided for a marine propulsion internal combustion engine to reduce engine speed and facilitate shifting of a marine propulsion transmission. Spark ignition is terminated in response to a given shift condition until engine speed drops below a given cut-in speed or until completion of the shifting, whichever occurs first. A stall interval is also started in response to the given shift condition. The engine is stalled upon completion of the stall interval if the shifting is not complete, even if engine speed has dropped below the given cut-in speed.
Abstract:
A resistance switching circuit is toggled immediately prior to cranking but subsequent to power application by the output of a manifold absolute pressure sensor effectively responding to ambient atmospheric pressure as indicative of altitude. The switching circuit is connected in series with the resistance element of the potentiometer which serves as the throttle control and alters the transfer characteristic of the control circuit. The gain of the system is such that the output operational amplifier saturates at an intermediate throttle setting such that the response for slow throttle is y=nx over the entire range of manifold pressure, while for fast throttle the response is y=nx for low manifold pressure and changes to y=mx+b for higher manifold pressure.
Abstract:
Mono-layer thin film membranes which are ultraporous. Such mono-layers are formed having a thickness on the order of about 1.2 to 150 nanometers, by a variety of polymerization, cross-linking, and film treatment processes to achieve the development of controlled pore sizes in the ultraporous size range corresponding to a molecular weight cutoff values of from about 500 to about 1,000,000. Such thin film mono-layer membranes (1) are ordinarily supported on a microporous support material, desirably a microporous polymer membrane (3) having a smooth, microporous skin (4) with pore sizes in the range of from about 0.1 microns to about 3 microns, preferably from about 0.1 microns to about 0.5 microns, in diameter. There may be an intermediate gel layer (2). These membranes are useful for ultrafiltration, dialysis, and molecular separations.
Abstract:
A filament tensioner for controlling the tension of filament or roving (12) as it is wound onto an article (14) includes means for sensing the tension in the filament as it is being transferred from a spool (42) and means coupled to the tension sensing means for adjusting the output torque of a motor (28) which drives the spool to in turn maintain the filament tension at a desired value. The tension sensing means includes a pivoted arm (80), a roller (90) rotatably coupled to an end of the pivoted arm, the roller being engaged by the filament so that the pivoted arm is pivoted to a position determined by the tension in the filament and means (96) for generating a position signal representing the position of the pivoted arm. In the preferred embodiment, the position signal is utilized by a pulse width modulated drive system (130-142) to control the output torque of the motor (28).
Abstract:
A spinning reel (20:20a) has a housing (21) with a center shaft (70) upon which a spool (31) is mounted for holding a fishing line (32). A handle (28) and gear train assembly (50) are provided for rotatably driving a rotor (30) which is coaxially mounted on the shaft (70). The rotor (30) has bail ears (39, 40) upon which bail arms (42,43:472,43) carrying a bail (34) are mounted with the bail being movable between a closed retrieving position and an open casting position. A unique bail actuating mechanism (400:470) is provided which rapidly moves the bail from the retrieving position to the casting position. The bail actuating mechanism (400:470) has an overcenter spring apparatus (426) which operates on one bail arm for holding the bail in the line retrieving position and, when manually moved beyond a certain point, drives the bail rapidly to the open casting position.
Abstract:
Enzyme-immunoconjugates which can be used for therapeutic purposes without significant patient side effects due to their administration. The general type of enzyme-immunoconjugate is composed of any antibody or fragment thereof linked to an oxidase whose natural substrate is not normally present in the body fluids or otherwise available in the extracellular spaces of the body. The therapeutic action of such oxidases lies in their ability to produce the cytotoxic yet biologically rapidly degrading agent hydrogen peroxide. Such oxidase-immunoconjugates would be specifically targeted to the desired tissues by use of the antibody component but would not be active until such time as a substrate of exogenous source is administered to the patient, whereupon hydrogen peroxide would be produced by the enzymatic process wherever the oxidase-immunoconjugate is present.
Abstract:
A marine drive includes an engine (5) mounted inboard of a boat (3). An oil pan (7) is suspended beneath the engine, and is connectable through a flexible tube (15) to a collapsible shape-conforming oil-receiving and storage bladder (10) which is adapted to be easily placed in the confining space (9) between the oil pan and the boat floor. The bladder will conform to the shape of essentially any support, such as upwardly extending projections (21, 22) of various contours, and in the present embodiments includes a grasping handle (23, 26) for convenience. A flow control device (14) is disposed between the oil pan and bladder. Furthermore, the connecting tube is mounted adjacent the bottom (8) of the oil pan.
Abstract:
A quantity of titanium (5) is heated in a crucible (1) to provide a melt (5), and a layer of slag (7), containing an ionizable titanium compound, such as titanium dioxide, along with ionizable slag constituents, is disposed on the top of the melt (5). The slag (7) is then heated to a molten state by direct current plasma arc heating with the melt (5) being anodic. After the slag (7) is molten, the polarity of the plasma arc heating is reversed so that the melt (5) is cathodic, causing the slag (7) to act as an electron transfer layer so that the titanium dioxide of the slag (7) is reduced to titanium and any dissolved oxygen in the melt (5) is converted to an ionic species of oxygen at the interface between the slag (7) and the melt (5). The resulting liquid titanium is combined with the melt (5), while the ionic species of oxygen is carried upwardly through the slag (7) and released from the slag layer (7) by an oxidation process. Additional quantities of titanium dioxide can be added to the slag (7) to continually convert the titanium dioxide to titanium under the reverse polarity plasma arc heating.
Abstract:
A marine propulsion system (200) having an outboard two cycle internal combustion engine (212) and an oil-fuel mixing fuel delivery system (2, 5, 7) has a vapor separator (702) connected to prevent excess oil in the mixture as fuel runs out. The vapor separator (702) has a fuel inlet (704) receiving fuel from the fuel tank (5), a fuel outlet (706) delivering fuel to the fuel inlet (4) of the oil-fuel mixer (2), and a vapor outlet (708) delivering vapor or air through a bypass connection (710) to the suction intake side of a fuel pump (11) and bypassing the mixer (2). The fuel pump (11) suctions oil-fuel mixture from the mixer (2). When the fuel tank (5) runs out of fuel, then air from the fuel tank (5) is sucked through the bypass connection (710) rather than through the mixer (2), which termination of flow through the mixer (2) stops further delivery of oil from the oil tank (7) to the engine (212) which would otherwise cause an overly rich oil-fuel mixture supplied to the engine (212) from the remaining oil-fuel mixture in a carburetor bowl or the like. The invention also maintains accuracy of the oil-fuel mixture ratio during normal orperation.