Abstract: Surface relief of a finger etc. is read using an optical-fiber prism unit, with fiber terminations at one end to contact the surface, and at the other for light passage along fibers from the first. Light enters where NA<0.5 and fiber diameter is constant with longitudinal position. The device is in a 1.4-2 L case, with a battery or power input, converter to form a corresponding data array for verifying, digital signal processor to do the verifying, and output to indicate or implement a decision. A video controller (with custom-programmed logic circuit) operates the sensors to develop the data array; an ADC digitizes the array; memory holds an authorized-user skin-pattern template, firmware for the processor, and data used in verifying; an output register holds the decision signal--all on a control, address, and data bus. High-power, radiative elements and a fast high-impedance data reader are on a common board in an isolating layout.

Abstract: Apparatus and method for both cleaning and polishing work surfaces such as automotive panels using a single combination pad. In one embodiment, a support holds a circular replaceable, disposable cleaning/polishing pad on a powered polishing tool for rotation about the pad's central axis. The illustrated pad is made of compressible/expandable material such as foam. The pad has front and rear recesses that define concentric radially outer and inner sections. The inner section is thinner and has a forward cleaning surface. The outer section normally protrudes forwardly of the cleaning surface so that when it is first brought into engagement with a work surface, the cleaning surface does not engage the work surface. A pressure-applying backup plate of a firm material such as neoprene has a forwardly displaced inner portion that is received in the pad rear recess for applying firm pressure to the pad cleaning surface. The plate has an outer portion for applying pressure to the outer pad section.

Abstract: At a first end of an optic-fiber prism assembly are fiber terminations to contact a relieved surface, e. g. finger (stabilized by a handgrip). In a region where fiber diameter is essentially constant with longitudinal position, light enters the prism, crosses the fibers and enters individual fibers through their sidewalls, lighting the terminations. To allow crosslighting of the assembly, the fiber-optic numerical aperture (NA) is small: preferably not exceeding one-half. Due to fingerprint etc. detail, fractions of light pass along the fibers; at the assembly second end a detector responds with an electrical-signal array based on the surface relief. The signals are processed to check finger etc. identity and applied to control access to a personal weapon, other equipment, facilities, data, or a money service. FTIR ("frustrated total internal reflection") bright- and dark-field versions have various benefits.

Abstract: Dust emission is controlled by a preferably short fill at the expulsion end of each chamber, and selective venting of residual pressure through the air-inlet end. This selective venting is accomplished through use of a novel seal or "pad" that has an extension for tightly covering and sealing the material-exhaust end of each chamber while the chamber is in a dust-control plenum. The pad extension is notched so that it leaves the air-inlet end uncovered, permitting pressure venting through the notch and the air-inlet end. To provide truly effective sealing of the pad extension against the wear plate above the chamber that is in the plenum, the extension is reinforced by a strong metal plate which is embedded in the pad. Careful contouring of the main material-conveying ports in the pad optimizes the performance. A new all-pneumatic pad-clamping pressure-control system has been found to provide excellent control of pressure and uniformity of wear, with a minimum of working parts and adjustments.

Abstract: Preferably a sensor receives a print image from an authorized person to form a template, and from a candidate to form test data. Noise variance is estimated from the test data as a function of position in the image, and used to weight the importance of comparison with the template at each position. Test data are multilevel, and are bandpassed and normalized--and expressed as local sinusoids--for comparison. A ridge spacing and direction map of the template is stored as vector wavenumber fields, which are later used to refine comparison. Global dilation--and also differential distortions--of the test image are estimated, and taken into account in the comparison. Comparison yields a test statistic that is the ratio, or log of the ratio, of the likelihoods of obtaining the test image assuming that it respectively was, and was not, formed by an authorized user.

Abstract: In one form of the game, the player must maintain her face in position to be sprayed while using a tool to capture or manipulate a visually observed object. This game may include an open electrical circuit that mishandling of the tool causes to close to direct a spray at the player.

Abstract: A crossmember defines guide surfaces to receive a leg tip. Preferably a screw, cam or lever applies nonimpulse force to wedge the tip against the surfaces. The tip is preferably unthreaded, exclusively noncircular in at least external cross-section, and very generally aligned with the leg axis. Preferably the screw or the like pulls the tip length-wise into the crossmember without rotating or threading the tip into the surfaces, and also retains the tip wedged in place. Also preferably a notch or analogous traction feature is formed in the leg or crossmember, and the screw (distinct from the tip) threaded to the other. The screw engages the notch to force the tip into the crossmember.

Abstract: In one form of game the player observes and must quickly respond to the rapidly changing conditions of one or more visually observed displays such as lights to avoid being sprayed by a liquid discharge. The games is so constructed that to effectively play the game the player must generally continuously observe the condition of the lights; to do so the player must maintain her face in position to be sprayed. Alternatively, the timing of the discharge may be tied to the player's game playing activity or may even occur on a random or apparently random basis.

Abstract: A hollow cylinder is fitted with a piston, whose hollow rod or shank protrudes downward from the cylinder to apply lifting suction to print media. The upper end of the cylinder communicates with a suction system. In the cylinder side walls, main passageways and reapportioning passageways apply suction to the underside of the piston when the piston is less than fully extended, drawing the piston down to extend the shank. When the shank is fully extended the piston blocks the reapportioning passageways--reallocating more of the available suction to other feet, in the same system, that remain unextended.

Abstract: At a first end of an optic-fiber prism assembly are fiber terminations to contact a relieved surface, e.g. finger (stabilized by a handgrip). In a region where fiber diameter is essentially constant with longitudinal position, light enters the prism, crosses the fibers and enters individual fibers through their sidewalls, lighting the terminations. To allow crosslighting of the assembly, the fiber-optic numerical aperture (NA) is small: preferably not exceeding one-half. Due to fingerprint etc. detail, fractions of light pass along the fibers; at the assembly second end a detector responds with an electrical-signal array based on the surface relief. The signals are processed to check finger etc. identity and applied to control access to a personal weapon, other equipment, facilities, data, or a money service. FTIR ("frustrated total internal reflection") bright- and dark-field versions have various benefits.

Abstract: Steam generating apparatus in the form of a thin, compact generally self-contained wall-mountable fixture. The fixture includes an upright front face section of porcelain or the like for being mounted in the wall of a shower or other enclosed steam room. The fixture further includes a frame that is fixed to the rear of the face section and supports a closed steam tank or boiler. A steam line delivers live steam from the boiler into the steam room. An steam head delivers the steam safely and with minimum noise. The fixture may also include a mirror and be mounted so that the mirror is face height of a standing user. The mirror is positioned adjacent to the boiler so that heat radiated from the boiler warms the mirror and inhibits it becoming fogged over by the steam in the room. The fixture also includes an electrical control system that is operable by the user from inside the steam room.

Abstract: A competitive strategy game playable by two or more players. The illustrated game includes a board defining a plurality of channels arranged adjacent to one another. Each channel has a plurality of positions arranged along the channel. Each player is provided with a set of player pieces, the player pieces of each set being visually distinguishable from the pieces of the other set. For example, the pieces of each set may be difference colors. The players take turns adding one or more of their pieces to selected channels. The channels each include structure to guide the process along the channel. The channels and pieces are proportioned and arranged to that when a piece is added to an already occupied position in a channel, the displaced piece that was in that position is shifted to an adjacent position in the channel, which in turn shifts additional pieces in the channel to new positions.

Abstract: Very costly professional-level judgments needed to comply with scientific and statutory restrictions on hazardous-waste segregation, shipment and disposal are collected cumulatively in a database for a very large number of hazardous waste materials. Many of these materials are statutorily designated or scientifically recognized, or both, as posing a significant physical danger to humans, other organisms, or the ecosphere generally. Later many consignments of particular materials are received (or identified before receipt, in a batch mode of operation) and classified very inexpensively--using nonprofessional-level personnel--by reference to the computerized database. Reversion to professional-level judgments occurs only if a material not previously encountered is received. Each consignment of each material is classified and handled consistently with all other consignments of like material, and in accordance with the professional-level judgments embodied in the database.

Abstract: A competitive table top type game having a "fenced-in" playing surface with opposed player ends. Each player controls one or more strikers and uses it to cause a play piece such as a ball to hit the opponent's target. When a player's target is hit, a liquid discharge is directed at that player for added play value and enjoyment. For simplicity and economy of construction, that player actuates a mechanical stop to stop the discharge and reset the target. In one form, the actuation of the stop also advances the opponent's's score. Alternatively, any simple score indicating arrangement may be used.

Abstract: Improved apparatus and method for mixing and introducing gas into a large body of liquid. The apparatus supports and rotates a plurality of spoke-like discharge members below the surface of the liquid. The members have upwardly facing perforated discharge surfaces through which compressed gas is released up into the liquid. Preferably the members have non-porous lower portions. To counter upward "lift pump" effect forces created by the rotating members, the members are tilted with their leading edges lower than their trailing edges. The tilt of the members and the speed of rotation are balanced so that the resultant angle of attack of the liquid relative to the discharge surfaces is zero or slightly greater, for efficiently and effectively shearing the emerging gas into relatively small size bubbles.

Abstract: A rotary feed structure for a gunite-conveying machine includes a polymeric body to resist sticking of gunite even if the latter includes silica fume, and even if it has set. The body has chambers in a circle. Preferably the body is urethane, self-bonded to a Ni-hard wear plate to eliminate radial leakage, and the mounting, (typically holes for studs), at least in part, is integral with the plate. A metal axial spacer is preferably next to the plate, but only within the innermost radius of chambers and with a sizable wall thickness. The body is preferably a feed-bowl type, with chambers formed as generally U-shaped pockets. A gunite machine using the polymeric feed structure also has a hopper, delivery tube, support and rotation of the feed structure, compressed-air for expelling the particulate material from the chambers into the tube, and provision for transporting the hopper, tube, body, and other apparatus. Chambers are selectively sealed to the expelling device and delivery tube.

Abstract: Improved steam generating apparatus in the form of a thin, compact generally self-contained wall-mountable fixture. The fixture includes an upright front face section of porcelain or the like for being mounted in the wall of a shower or other enclosed steam room. The fixture further includes a frame that is fixed to the rear of the face section and supports a closed steam tank or boiler. A steam line delivers live steam from the boiler into the steam room. An improved steam head delivers the steam safely and with minimum noise. The fixture may also include a mirror and be mounted so that the mirror is face height of a standing user. The mirror is positioned adjacent to the boiler so that heat radiated from the boiler warms the mirror and inhibits it becoming fogged over by the steam in the room. The fixture also includes an electrical control system that is operable by the user from inside the steam room.

Abstract: The system provides electricity to operate any of a multiplicity of device and most typically receives power from a source and passes power to any of the devices. The system also accepts electronic-device identification information for any particular one of such devices. The system also has one or more programmed digital electronic microprocessors that use the identification information to select power parameters--for passage of power from the source to the powered device. The system activates its own power-passing capability to apply power to each device according to the power parameters selected by the microprocessor.

Abstract: Local data about the ocean surface and what is above it are used to improve public radio and TV weather reporting; to improve small-craft ocean traffic safety in view of local precipitation, wind, icebergs, or cloudiness; or to improve performance of wind-sensitive sound-receiving apparatus. (As to weather reporting, one mechanism is in effect a calibration of simultaneous satellite-based data. As to acoustic receivers, the mechanism is orienting receivers to the wind, to minimize wind-noise pickup.) These functions are based on observing, from a distance below the surface, light intensities of many areas of the irregular water surface. From these intensities surface-slope magnitudes and orientations are estimated; analysis of this information enables a quantitative, dynamic representation of the water surface itself. From this model in turn, the conditions enumerated earlier are inferred.

Abstract: A mechanism to linearly drive an object has a driven member and a magnetic coupling--with first and second mutually facing elements which transmit longitudinal force but allow relative lateral motion that may be translational or rotational. In one form of the device a flange extends from one element, along a direction including a longitudinal component, to engage--through the intermediary of a set of balls--a surface on the other element. The surface and flange cooperate to constrain the two elements against relative lateral motion in at least one direction. Magnetic fields clamp the balls between the flange and surface, to eliminate play perpendicular to the surface, and permit relative motion parallel to the surface. Two stages in series transmit torque through the system but absorb transverse translational wobble.