Abstract: Non-slip laminatable materials are provided by coating a polymer sheet backing with mineral particles adhered to the backing by a radiation curable adhesive.

Abstract: Non-slip laminatable materials are provided by coating a polymer sheet backing with mineral particles adhered to the backing by a radiation curable adhesive.

Abstract: A source array useful in vertical seismic profiling is disclosed wherein a first set of source elements having horizontal extent is spaced to have at least a first direction and a second direction, and a second set of source elements having vertical extent are spaced below the first set of source elements. The source elements in the source array are sequentially activated to focus the seismic energy along selected radial paths through the earth's subsurface.

Abstract: A moisture sensor which includes a moisture sensitive material and electrodes in communication with the moisture sensitive material, the moisture sensitive material containing a substantially electrically insulating substance derived from a colloidal dispersion and, distributed in or on the substance, an electrically conducting substance.

Abstract: An improved flexible blanket heater includes a thin, normally flat flexible blanket of elastic dielectric material having a high modulus of elasticity and defining top and bottom surfaces. An elongate flexible resistance element of an alloy having a lower modulus of elasticity than said dielectric material and positioned within and arranged to extend about and throughout the plane of the blanket. The blanket has welts at its top and bottom surfaces adjacent and coextensive with the element. The welts establish curved compacted element supporting masses about the inside circumference of the element when the blanket is bent and which serve to limit bending of the element to radii at which the modulus of elasticity of the element is not exceeded. The blanket includes flexible fabric reinforcements at its surfaces which prevent free elastic flow and displacement of the dielectric material and assure compacting of that material about the inside circumference of bends at the welts.

Abstract: A sectional cloth backed abrasive belt comprising a series of abrasive coated cloth backed sections joined together so that the joints between sections are at an angle of from about 45.degree., to about 85.degree. to the running direction of the belt. The cloth backing has at least a portion of the fill filaments of the cloth backing at an angle of from 45.degree. to 85.degree. to the warp filaments of the cloth backing and the sections are joined such that at least 30% of the fill filaments are disposed in the running direction of the belt. The invention further comprises the process for making such an abrasive belt by joining appropriate parallelogram shaped sections. The section of abrasive belt of the invention has increased strength in the running direction of the belt and decreased stretch in the running direction of the belt.

Abstract: An oxygen sensor which exhibits a change in electrical resistance as a function of oxygen partial pressure comprises at least one of strontium ferrate, barium ferrate and strontium barium ferrate, in which part of the iron in the ferrate lattice has been replaced by at least one element of valency greater than 3, such as titanium, cerium, niobium or tantalum.

Abstract: In a slot machine, the individual mechanical reels are stopped under the command of an electronic circuit at positions determined by a random count created by the electronic circuit. Specifically, counting registers are continuously cycled through counts corresponding to all possible combinations of the indicia on the reels at a rapid rate while the machine is idle, the cycling being stopped when play begins. The content of the registers at the moment when the cycling is stopped determines the position in which the electronic circuit will stop the reels. The randomness of the count may be increased by cyclically changing the relationship between the counting registers and the reels. The reel positions are delineated by a repeated code providing a different code for any successive three positions. Two sensors are provided to determine the position and detect an error in the stopped position of the reel.

Abstract: A titanium-nickel alloy containing 51 to 55.4% nickel with the addition of optional quantities of niobium intended for use as an anode in the electrowinning of metal, particularly cobalt, an electrolytic cell incorporating such an anode and a method of operating such a cell.

Abstract: A communications unit that allows alternate voice and digital data transmissions over a single telephone line. A communications unit, at each of two locations that connect through telephones, includes a trunk signal path that connects to a telephone line and a telephone signal path that connects to the telephone. A digital data signal path connects to digital data processing equipment, usually in the form of an input/output unit in a digital data processing system. A monostable switch interconnects the telephone line and trunk signal paths in a stable conduction to enable voice communications. When the digital data signal path is used, a control automatically shifts the monostable switching means to its astable state thereby to isolate the telephone signal path and to interconnect the trunk signal path and the digital data signal path to allow data communications.

Abstract: A cash accounting and surveillance system for games, whereby operation of a number of player operated gaming devices may be monitored for purposes of detecting abnormal operation and/or cheating and for providing automatic accounting information for record keeping and pilferage detection purposes. The system utilizes a node concept with each node having a non-volatile data storage capability and a communications capability for communicating with each of a plurality of gaming devices coupled to the node. The exemplary embodiment disclosed operates in conjunction with slot machines having mechanically rotatable reels and a microprocessor control system for randomizing the reel stopping payouts and other machine functions. Alternate embodiments are disclosed.

Abstract: A water heater including an elongate tubular case, a block and a plug in spaced relationship in the case defining a chamber, an elongate heater tube with a helical portion within the chamber, and defining a central longitudinal opening, means connecting the ends of the tube with water supply and delivery lines, an elongate resistance heater unit extending longitudinally through said tube, an end extending from one end of the tube, a power supply line extending from a power source to the unit and means to control the supply of power from the line to the unit including a temperature sensing device positioned in the opening defined by the coiled tube and operable to stop and start the flow of power to the unit when the temperature of air in said opening is above and below a set temperature.

Abstract: A cartridge heater with improved thermocouple comprising a tubular metal sheath with a front end having a central opening therein, a metal plug engaged in and closing said opening, a filler of dielectric material in the sheath rearward of the plug, a resistance wire within and extending longitudinally of the sheath and supported by said filler, said plug having a pair of circumferentially spaced axially extending and radially outwardly opening grooves, a pair of elongate thermocouple wires supported by the filler within the sheath and having front end portions tightly engaged in and between in said opening and grooves, and an annular weld about the foremost line of contact between said sheath and plug and across the forward ends of said grooves.

Abstract: A nebulizer comprising a container with a supply of water, a downwardly opening cap with air delivery means and housing an aspirator connected with a supply of oxygen under pressure and adapted to draw water from said supply, an elongate heating unit with an upper end defining a heating chamber and carried by the container, said cap engaged with the upper end of the unit to define a mixing chamber of fixed predetermined volume and shape in which the aspirator is positioned, water inlet means communicating with the heating chamber and water supply, water outlet means communicating with the heating chamber and the aspirator and an electric resistance heater in the unit, spaced from the heating chamber to heat water in the heating chamber and temper the atmosphere in the mixing chamber.

Abstract: An automatic switching unit for connection to a modem at a remote site in a data communications network. The switching unit normally connects the modem to a primary data transmission path. If the primary path malfunctions, a central site operator can telephone the remote site and establish a secondary data transmission path. The switching unit answers the incoming calls and automatically disconnects the modem from the primary data transmission path. Once the primary data transmission path has been repaired, the central site operator causes the switching unit to return communications to the primary data transmission path. In one embodiment, this transfer can be made while maintaining communications over the secondary data transmission path.

Abstract: A testing facility for a data communications network including modulators and demodulators, or modems, at central sites, at intermediate, or hubbing, sites, and at remote sites. Hubbing site testing units connect to respective host modems at the intermediate sites. The central testing unit transmits control words containing line address, drop address, and command characters. A configuration control circuit in each hubbing site testing unit generates signals that designate the particular location of the testing unit at the hubbing site. A validation circuit in each testing unit enables the testing unit to respond to the command character if two valid control words are received in succession. Thereafter the testing unit transmits back to the central testing unit signals in response to the test defined by the command character.

Abstract: A device for measuring the power of analog signals on telephone lines in a data communications network. A selection circuit couples a selected analog signal from one of the telephone lines to a measuring circuit. A full-wave rectifier and a low pass filter process and convey the selected signal to a plurality of open-loop comparators. Each comparator produces a binary signal that indicates whether the selected signal is greater or less than a reference power that corresponds to a predetermined power level. Each comparator energizes an inverter and driver that in turn energizes a light-emitting diode thereby to indicate the line signal power visually. However, the drivers are interconnected so only one light-emitting diode is energized at any given time. A blanking circuit disables the light-emitting diodes when rapid signal level changes occur. A self-testing circuit includes a damped oscillator for testing all the circuitry in the measuring device.

Abstract: A cartridge heater and multiple thermocouple assembly comprising an elongate outer heavy walled structurally supportive metal sheath, an elongate thin walled, yieldable, orienting metal tube extending through the sheath and defining an annulus, a plurality of axially aligned pairs of thermocouple cables and spacer rods fixed to the tube in circumferential spaced parallel relationship and extending through the annulus in interfering engagement with the sheath, a resistance element extending through the tube, conductor terminals for the element accessible at one end of the tube and a filler of particulate dielectric material compacted in the tube about the element and in the annulus between the sheath, tube and adjacent pairs of cables and rods, said cables being of different lengths and having outer ends with conductors accessible at an end of the annulus and having inner ends with thermocouple junctions located at spaced points longitudinally of the sheath.

Abstract: A nebulizer for uniformly tempering and humidifying oxygen and different predetermined mixtures of oxygen-enriched air comprising a vessel containing a volume of water, oxygen supply means delivering oxygen into the vessel, air supply means conducting air into the vessel, and electric resistance heater means to heat the water in the vessel, said air supply and heater means including adjustable air metering means with a movable control part and said electric heater means including an adjustable control unit with a movable part, drive means connected with and between said movable parts whereby movement of one of said control parts results in predetermined corresponding movement of the other control part, whereby changes in the volume of air conducted into the vessel by said metering means results in predetermined corresponding heat output by the metering means and resulting tempering of the water.