Abstract: Camouflage material incorporates means for specifying and providing predetermined degree of reflection of incident radar waves which is optimum for particular use environments. The overall pattern is the resultant of control of reflection of longer radar wavelengths by a layer of electrically conductive fibrils of controlled density and reflection of shorter radar wavelengths by thin mosaic layer of metal.

Abstract: The device operates after the principle of an intensity interferometer. It contains a plurality of detectors arranged two-dimensionally in fixed relative positions. The signals from the detectors are correlated in pairs. A pattern formed from the correlation values is compared with patterns of the same kind from known objects.

Abstract: The disclosed applicator applies liquids such as glue or a backbone softening liquid to a web of paper as that paper is moving through a printing press. The applicator has a long, thin dispensing tube, a liquid supply line and a gas purge line. Means is provided for a selectively and alternatively connecting the liquid supply line and the gas purge line to the dispensing tip so that when the liquid supply line is connected, the tip will dispense liquid and when the gas purge line is connected, the tip will be purged of liquid. A shield is provided which at least partially surrounds the tip when the tip is connected to the gas purge line so that the tip will be protected when it is not in use and workers will be protected from the tip as it is being purged.

Abstract: An improved beverage-making device, particularly useful for brewing coffee, provides a safety thermostat arrangement for quickly detecting excessive temperatures of a hot water container generally near a heating element arranged therein. A running thermostat provides a self-supporting sensing tube means in cooperation with a capillary tube and thermostat which detect the mean temperature of the hot water and are responsive to a narrow range of temperature variations within the hot water container. The improvement further includes a tap-off hot water system which provides hot water separately and independently of the brewing water heated in said container. The system is connected upstream of the cold water inlet valve of the device and directs cold water into a water coil means residing within the hot water container. Outlet pipe means convey heated water from the coil to an outlet faucet projecting exteriorly of the device.

Abstract: A torque wrench having a shaft with a tool head at one end a handle at the other end. The handle is supported on a lever system having a first and a second two-armed lever. One arm of the first lever engages one arm of the second lever. The handle is supported at two points on the other arm of the first lever and the other arm of the second lever. The other arm of the first lever engages a force sensor, which is attached to the shaft. The levers are dimensioned such that the measuring force acting upon the force sensor, when an applied force acts on the handle, is independent of the point of application of the applied force and is always proportional to the torque exerted about the axis of rotation of a tool.

Abstract: The hot water container of a beverage making device is provided with a removable cover sealed thereto and has arranged therein an electric immersion heating element controlled by a running thermostat and a safety thermostat for heating a volume of cold water admitted into the container through an inlet tube extending through the cover and controlled by a timed inlet valve, the hot water being discharged from the container at a brewing station through a syphon tube also extending through the cover.

Abstract: A system for trimming, insulating and sealing between two separate elements of a building structure. The system includes an elongated strip of material, such as wood, having a channel on its reverse side which is wider than the width of a gap in the building structure which is to be covered by the strip. A compressible insulant, such as foam, is disposed in the channel and, like the channel, has a width greater than the width of the gap so that the insulant seals between the two building elements when the strip is installed. The insulant extends outwardly from the channel so that it is compressed when the strip is installed.

Abstract: A system for generating a unique signal indicative of a particular identity carried by a card. The card has a series of zones along the sides thereof with holes extending through one or more of the zones. A receptacle is provided for the card, the receptacle including a longitudinal internal slot and a series of opto-electronic sensors which are spaced along the slot such that when the card is inserted within the slot, one of the sensors is positioned in registration with each of these zones. The card and the receptacle are formed such that the card can be inserted in the slot in only one proper orientation. One or more of the sensors is employed solely for determining proper insertion of the card.

Abstract: A lawn sprinkler has a base 10 through which water is directed to a nozzle which directs the water vertically upwardly onto a water dispersing member 28 which is rotatably mounted on a vertical spindle 46. The water impinges first upon a convexly curved surface 52 when it is deflected onto a concavely curved surface 54. The reaction to the force of the water on the dispersing member 28 causes the latter to rotate on the spindle 46, so that water droplets are flung off the edge of the concave surface 54 through a range of angles of inclination as the dispersing member rotates to afford 360.degree. coverage around the sprinkler.

Abstract: A phase locked loop system for receiving a data input with a predetermined bit frequency includes a source (10 D.sub.1 D.sub.2) of clock signals with a frequency nominally equal to the bit frequency of the data signal means (12,13,14,15,16) for dividing each clock period into three regions corresponding to early, normal and late arrival of the data signal relative to the clock signal and means (D.sub.3 D.sub.4 D.sub.5) for deciding which region the data signal occurs in and for respectively advancing or retarding the phase of the clock signal if the data signal occurs in the early or later region.

Abstract: An internally reinforced extruded plastic pipe which is adapted for use as an underground infiltration, collection, or transport conduit for liquids and gases. The pipe is provided with at least one integral reinforcing stem and the critical mode of failure is buckling rather than deflection. The pipe is not dependent upon surrounding backfill for lateral support as with conventional pipe or conventional reinforced pipe. The same amount of plastic is usable per lineal unit as is used in comparable conventional pipe sizes, however, the cross-section is redistributed, which achieves greater loading capacity.

Abstract: A gimbal (108) on the driving side and a gimbal (106) on the rotor side and a gimbal arrangement with two gimbals (22,76) are formed by two coaxial, cylindrical rings (10,64) wherein peripheral cuts (12,14,16,18 and 66,68,70,72, respectively), having ends forming angles are provided in the rings. The peripheral cuts separate the portions of the gimbals (108,106) from the gimbals (22,76). The ends form leaf springs (for example 60 and 100), which form flexural pivots. One leaf spring (60) is connected to the gimbal (108) on the driving side and the other leaf spring is connected to the gimbal (106) on the driven side. The cuts are produced by electroerosion.

Abstract: A slant adjustable grill for use with large outdoor cooking devices is provided. The slant adjustable grill is cooperative with two grill support panels located at opposite ends of the firebox. The grill support panels include slanted slots for the selective engagement with handle means extending outwardly from the grill. The grill is rendered capable of vertical adustment or slant adjustment in either the front/back or right/left mode. Additionally, a domed lid may be used in cooperation with the slant adjustable grill and provides access cut-out means whereby the user may vertically or slant adjust the grill to the desired position. The slant adjustable grill is also fully removable from the device as well as being pivotable to an open position to grant access to the firebox.

Abstract: A portable screed for working concrete and which is mounted on the user. The screed includes a variable length screed plate, a vibrator for the screed plate, a frame attached to the screed plate, a body harness connected intermediate the ends of the frame, and a balancing weight positioned so that the center of gravity of the screed is essentially coextensive with the center of gravity of the operator. The body harness is adjustable along the frame, and the frame may be adjustable as required to ensure that the center of gravity of the frame is positioned coextensively with the center of gravity of the operator so that the operator is not unbalanced by the screed.

Abstract: The system forms displays as an array of picture elements each of which can have more than two possible intensities (e.g. a grey scale). The circle generator derives the intensities for elements in and near an arc of a circle to be drawn. The intensity for an element is determined by the closest distance d from the element to an ideal circle characterizing the arc in such a way as to give a smoothed appearance. The distance d is obtained from a distance accumulator (39) and applied, adjusted for the width of the arc, to a sample table (42) holding the intensities. A step sequencer (40) causes the circle generator to execute scans along lines of picture elements across the arc. At each step d is changed by a distance increment or decrement obtained from one or both of two increment accumulators (36) and (37). These in turn are changed at each step by a constant amount obtained from a register (38) and equal to the step size divided by the radius of the ideal circle.

Abstract: A portable X-ray film cassette holder for a wheelchair is disclosed whereby the patient can remain stationed in the wheelchair and need not be removed therefrom for X-ray photography. The cassette holder has quickly adjustable mounting means enabling the holder to be used with differently sized wheelchairs and further provides portability for expeditiously taking sequential photographs of different wheelchair-bound patients.

Abstract: A universal adapter coupling for liquid chromatography equipment, such as columns. The adapter coupling comprises two threaded segments which are matingly secured to one another and has an elongated sealing insert located in a central passage which extends axially between opposite ends of the holder. The insert protrudes from one of the ends of the holder and has a collar which is captured within a cavity in the holder. Ferrule seats are provided at opposite ends of the insert so that the adapter coupling can be used either as a female or a male coupling.

Abstract: A device for connecting one liquid chromatography device to another. The device comprises an elongated, cylindrical shaft having an integral ferrule seat at each end of the shaft. A central bore extends through the shaft and the integral ferrule seats to permit liquid to pass therethrough. An enlarged collar is located centrally on the shaft to aid in attaching the device to chromatography equipment. Because of the short length of the device and minimum size of the central bore, the device has a minimum of interceding volume so that the efficiency of connected devices is uneffected.

Abstract: A security cover lockably engageable with surface mounted apparatus for preventing unauthorized access to the apparatus. The security cover includes a shell with peripheral sides which closely conform to the size of the apparatus over which it fits, and a pair of tangs on the shell edge wedgable between the apparatus and the surface. A key lock is mounted within the outer surface of the protective cover and includes a slotted finger rotatable with the lock cylinder. The fastener with which the apparatus is fixed to the surface is replaced by a double-headed fastener and is engageable with the slotted finger to thereby lock the protective cover to the apparatus. In the alternative, another apparatus screw is replaced with a double-headed fastener and, instead of tangs, a side edge of the cover is slotted for engagement with the second double-headed screw.