Abstract: The specification discloses an externally mounted filter for filtering contaminated fluids from a fluid-containing system. Fluid is conducted from the system to a housing, through a filter element inside the housing, and back to the system. The filter includes an indicator, visible to a person viewing the housing, which is configured to assume an indicating configuration upon exposure to a fluid pressure in the filter in excess of a predetermined level. The filter is configured to discriminate between momentary fluid pressure surges and excess fluid pressure in the filter so that the indicator is not prematurely activated.

Abstract: An electromagnetic pump and generator apparatus for electrically conductive fluids includes a conduit for containing the conductive fluid and apertures in the sides of the conduit. A fluid circuit is defined outside the conduit for containing a quantity of the conducting fluid and is configured so that the conducting fluid in the circuit is in fluid communication with the conducting fluid in the conduit. When used as a pump, a magnet produces a magnetic field across the conduit between the apertures and a device is employed to produce an electric current in the conducting fluid in the fluid circuit. Current in the conducting fluid in the fluid circuit flow across the conduit through the conducting fluid contained therein between the apertures. The current flowing across the conduit together with the magnetic field imparts a force on the conducting fluid in the conduit causing the fluid to be pumped.

Abstract: A video camera produces an image of a license plate on a vehicle, and a scanning apparatus finds a license plate number in the image. The identification of the license plate number is verified in a confidence check section by checking for the presence of a state logo. Next, a character extractor identifies individual characters of the number by finding and tracing a contour along interior portions of the character edges, and the contour length, character height, and character width are then checked in a validity checking section to determine whether they are within predetermined acceptable ranges. To correct for obscuring objects on the license plate, a character alignment section determines the top line and baseline of the license plate number and disregards portions of the characters that appear to be outside of these limits, and a license plate frame correction section is utilized to extract the characters when a portion thereof is obscured by a license plate frame.

Abstract: Disclosed is a size adjustable hat including a crown having an opening for receiving the head of the wearer and a crown margin at the lower periphery of the crown. The hat further includes a sweatband attached at the inside of the crown margin with the seatband extending along the inside of said crown. A slit extends upwardly into the crown margin with a portion of the crown margin adjacent the slit forming a flap which overlaps a portion of the crown margin on the opposite side of the slit. The sweatband is also divided adjacent to the slit to form overlapping ends and has a region adjacent the flap which is free to be downturned to serve as an extension of the crown margin. The hat further includes attachment means for attaching the overlapped ends of the seatband in a plurality of overlapped positions.

Abstract: An improved power takeoff unit for a motor vehicle including a transition member, a drive shaft means and a spur gear means, each provided with clutch teeth occupying a common cylindrical space and being disposed contiguously, and shiftable annular gear means engaging selected ones of said transition member, drive shaft means and spur gear means.

Abstract: A magnetic retrieval tool for retrieving magnetically attractable objects includes a magnet supported in a magnet housing on an elongated, flexible shaft. The magnet is positioned adjacent a face of the housing and is oriented with a line extending through the N and S poles being generally parallel to the face with pole pieces concentrating the magnetic force of the magnet at the face. A remotely operated force reduction feature includes a sleeve of a magnetically attractable material movable between a first position with at least a portion of said magnet disposed within the sleeve to reduce the magnetic forces of the magnet and a second position with the sleeve remote from said magnet.

Abstract: The specification discloses a hand held portable facing device to be used primarily for facing polystyrene building panels after installation. The facing device is constructed of a frame, a wire planing element, and tension arms which mount on the frame for keeping the planing element taut. The facing device incorporates an electrical power system which conducts electrical current from an external source, through an electrical power unit, through a safety switch, through the wire planing element, to the frame and earth ground which are electrically interconnected. The current flow heats the wire planing element and enables it to shear a flat polystyrene panel. Guide arms capable of resting on and following the flat panel are incorporated into the frame, and the tension arms and wire planing element are so attached to the guide arms that the wire planing element follows the path of the guide arms leaving a flat smooth surface.

Abstract: A method and apparatus are disclosed for measuring a velocity component of a moving fluid. Coherent light at two different wavelengths is directed into the moving fluid to create a space-and-time modulated optical field within a sample volume and to cause a chemical component of the moving fluid to fluoresce. Measurement of temporal and/or spatial characteristics of the resulting fluorescence is employed to determine the velocity component of the moving field.

Abstract: A walking sole for use with a bicyclist's shoe having a cleat for engaging corresponding structure on the bicycle pedal includes a sole member for attachment to the shoe including front and rear portions connected together with a hinge. The front portion of the sole member is provided with a recess and, in a walking position, receives the cleat to provide a smooth walking surface. For riding, the front portion folds rearwardly at the hinge to a position beneath the rear portion where it is clear of the cleat.

Abstract: A table top construction including a frame and a top plate with a rim bounding the marginal edge of the plate. An upper, inwardly extending flange of the rim rests on the upper surface of the plate and a lower, inwardly extending flange is spaced below the upper flange. Wedge members are inserted in the rim between the flanges to maintain the top plate against the upper flange. Connecting members engage the wedge members and the frame to prevent relative movement between the frame and the rim.

Abstract: The disclosure relates to compounds of the formula ##STR1## and pharmaceutically acceptable addition salts thereof wherein R.sub.1 represents hydrogen, R.sub.1 represents a group having the formula --OR.sub.2 in which R.sub.2 is a lower alkyl group or an aryl group, or R.sub.1 represents a group having the formula ##STR2## in which R.sub.3 is hydrogen, a lower alkyl group, or an aryl group, wherein R.sub.4 is a lower alkyl group containing 1 to 6 carbon atoms, wherein R.sub.5 is either hydrogen or methyl, wherein NR.sub.6 is a group selected from the class consisting of amino, lower mono and dialkylamino, piperidino, pyrrolidino, and morpholino groups and wherein Y.sub.1 and Y.sub.2 are identical and are hydrogen or a halogen. Compounds in accordance with the invention are useful as vasodilators and as antiarrythmic agents.

Abstract: A method and apparatus are disclosed for splicing lengths of synthetic fiber tow. The tail of one length of tow and the lead portion of another length are each separated into an equal number of bundles. Bundles from the lead portion are overlapped with bundles from the tail portion to form overlapped pairs of bundles, which pairs are confined in a pair of separate, spaced-apart, open-ended passageways. Then, the overlapped pairs in each of the pairs of passageways are subjected to a plurality of longitudinally spaced-apart jets of gaseous fluid oriented generally perpendicular to the length of the overlapped pairs. This causes fibers in the pairs of bundles from the lead portion and the tail portion to become entangled to form a splice between the lengths of full tow. With certain tows it is preferred that the direction of the jets in one of the passageways of each of the pairs of passageways is opposed to the direction of the jets in the other passageway of each of the pairs of passageways.

Abstract: An oil filter attaches to an internal combustion engine and filters the oil that is circulated through the engine. The filter includes a first can and a second can that may be attached together or separated apart. The first can attaches to the engine, and it has a first inlet and a first outlet for receiving oil from and transmitting oil to the engine. It also has a second inlet and a second outlet for receiving oil from and transmitting oil to the second can. The second can sealably attaches and detaches from the first can and, when attached, the second outlet of the first can is connected to an inlet of the second can, and an outlet of the second can is sealably connected to the second inlet of the first can. Filters are disposed within the two cans and flow directing apparatus is provided to direct the oil from the engine, through the two filters in series and back to the engine. In alternate embodiments, the cans include removable lids so that the filter element may be removed from a can.

Abstract: An air separator for separating at least one constituent element from air delivered from an air source by a pair of adsorption beds utilizes a control box and assembly of working components arranged in such a relationship to one another within the control box so as to facilitate service and maintenance of the air separator. The working components of the air separator include filtering componentry, a pressure regulator, a pair of feed valves, a pair of waste valves, a pair of product and equalization valves and a product flow controller operatively connected in flow communication with one another for routing the source air through the separator and which are arranged in a substantially vertical plane within the control box. Because the working components are arranged in a generally planar arrangement, each of the working components is readily and easily accessible.

Abstract: An acceleration control device for a hydraulic drive unit having a rotatable control shaft movable between an on position and an off position. An arm is connected to the control shaft for rotating the shaft between the off and on positions. A motive apparatus is movable between a first position which corresponds to the off position of the control shaft and a second position which corresponds to the on position of the control shaft. A mechanical linkage is connected between the motive apparatus and the arm. The linkage imparts movement to the arm in response to movement of the motive apparatus to cause the control shaft to move between the off and on positions as the motive apparatus moves between the first and second positions, respectively. The linkage is configured to provide a substantially nonlinear relationship between the speed of the arm and the speed of the motive apparatus.

Abstract: A papermaking stock comprising cellulose fibers in an aqueous medium at a concentration of preferably about 50% by weight of the total solids in the stock including a retention and dewatering aid comprising a two component combination of an anionic polyacrylamide and a cationic colloidal silicia sol. The stock exhibits enhanced resistance to shear forces during the papermaking process. A papermaking process is also described.

Abstract: A resinous composition useful as a tackifier for hot melt and pressure sensitive adhesives is produced by the cationic copolymerization of an isomerizate of turpentine or alpha-pinene and a vinyl benzene derivative.

Abstract: A method and apparatus are disclosed for cross-stream sampling of bulk material from a conveyor belt. The apparatus includes a sampler movable through an arcuate path across the conveyor belt for removing a cross-stream increment of bulk material from the belt. Provision is made for modulating the normal troughing of the conveyor belt and supporting and conforming the belt to the arcuate path of the sampler. When the conveyor belt is modulated to conform to the arcuate path of the sampler and the sampler moves through its arcuate path, the sampler moves in close proximity to the upper surface of the conveyor belt to remove the cross-stream increment of bulk material from the belt. The invention is capable of taking a cross-stream increment when the conveyor belt is stopped or moving. The ability to remove cross-stream increments from a moving belt eliminates interruptions in the flow of bulk material being conveyed on the belt.

Abstract: An apparatus and method for monitoring an ultraviolet laser beam includes disposing in the path of an ultraviolet laser beam a substantially transparent crystal that will produce a color pattern in response to ultraviolet radiation. The crystal is exposed to the ultraviolet laser beam and a color pattern is produced within the crystal corresponding to the laser beam intensity distribution therein. The crystal is then exposed to visible light, and the color pattern is observed by means of the visible light to determine the characteristics of the laser beam that passed through crystal. In this manner, a perpendicular cross sectional intensity profile and a longitudinal intensity profile of the ultraviolet laser beam may be determined. The observation of the color pattern may be made with forward or back scattered light and may be made with the naked eye or with optical systems such as microscopes and television cameras.

Abstract: Reductive bleaching of lignin containing pulps employing polydentate ligand complexes of dipositive vanadium, chromium and titanium. High brightness pulps with good reversion stability are obtained. The process is essentially polution free as the reduced complexes can be repeatedly regenerated electrochemically.