Abstract: A security circuit includes a Hall-effect sensor for generating an output signal in response to a sensed variation in magnetic field strength. A supply voltage source is connected to the Hall-effect sensor. A latch circuit receives the Hall-effect sensor output signal and generates a latched output signal. The latch circuit operates between a set and a reset state. Circuitry is provided for monitoring the supply voltage source and for generating an output signal applied to the latch circuit. The latch circuit generates the latched output signal in response to the Hall-effect sensor output signal and the output signal generated by the monitoring circuit when the supply voltage is at a predetermined level. The latch circuit is reset when the supply voltage is below the predetermined level.

Abstract: A source facsimile apparatus includes a modem having a variable transmission rate and is connected by a radio link to a destination facsimile apparatus which is located in a mobile subscriber station within a radio network. Facsimile data is transmitted at a selected data transmission rate from the source facsimile apparatus to a modem within an interworking function located in the radio network. A buffer memory stores the facsimile data received by the modem of the interworking function. The facsimile data is then transmitted from the buffer memory via the radio link to the destination facsimile apparatus within the mobile station. If the radio link does not allow facsimile data to be sent to the mobile station at about the same rate it is being received by the modem of the interworking function, the latter is changed to bring the two into closer conformity.

Abstract: A preformed posterior palatal seal (Preformed PPS) for securing to, anatonically based existing dentures includes a body preformed of a predetermined size and shape of a posterior palatal seal (PPS) for sealing an existing denture at the "Ah line" of the human palate and adhesive for holding the preformed body to a denture.

Abstract: A composition adapted to convert hydrogen sulfide and organic sulfides to nontoxic polymers. The compositions comprise amine resin solutions made by reacting sterically hindered amines such as selected diamines, triamines, amino alcohols, and mixtures thereof, with aldehydes, aldehyde donors, or the reaction products of lower alkanolamines and lower aldehydes. The subject compositions are preferably made by reacting the sterically hindered amines and aldehyde components in about a 1:1 molar ratio at a temperature ranging from about 110.degree. to about 120.degree. F. (about 43.degree. to about 49.degree. C.), using enough of the sterically hindered amine to produce a reaction product having a pH ranging from about 10.5 to about 12. Streams containing hydrogen sulfide or organic sulfides are preferably treated by contacting such streams with from about 2 to about 4 ppm of the amine solution of the invention per ppm of sulfide.

Abstract: A composition is disclosed that is adapted to convert hydrogen sulfide and organic sulfides to nontoxic polymers. The compositions comprise amine resin solutions made by reacting sterically hindered amines such as amine heads with aldoses selected from the group consisting of D-aldoses having from 3 to 6 carbon atoms. Streams containing hydrogen sulfide or organic sulfides are preferably treated by contacting such streams with from about 2 to about 4 ppm or more of the amine solution of the invention per ppm of sulfide.

Abstract: A language translation teaching aid and method comprises a first presentation of a line of words, a phrase, or a sentence in a first language according to its normal rules of syntax and grammar; a second presentation in a second language of a word-for-word translation of the words, a phrase, or a sentence presented in the first language; a third presentation in the second language of an accurate translation of the first presentation according to the normal rules of syntax and grammar of the second language; and a fourth presentation in the first language of a word-for-word translation of the third presentation in the second language.

Abstract: A device for generating rotating shaft power from atmospheric air includes an airfoil. A partition is disposed within the airfoil along the length thereof. The partition forms an upper chamber and a lower chamber within the airfoil. The partition includes an aperture creating a fluid communication path between the upper and lower chambers. The leading edge of the airfoil includes an aperture disposed adjacent to the lower chamber. The top surface of the airfoil includes an aperture disposed adjacent to the upper chamber. A turbine is disposed within the partition aperture, and is adapted to be driven by fluid pressure entering the leading edge aperture of the airfoil and exiting the top surface aperture of the airfoil.

Abstract: A system for reducing the number of points to be tested on a printed circuit board where the printed circuit board includes a plurality of network traces each having end points and a plurality of pads provides for the identification of the end points of each network trace of the plurality of network traces. Certain ones of the plurality of network traces network located within a predetermined distance of one another are grouped to form a plurality of groups of network traces. The identified end points of the grouped network traces are connected together within each group of network traces to form a continuous trace having one pair of end points for each group of network traces. The end points are used for testing the printed circuit board.

Abstract: A backrest adjusting device for a stroller includes a slidable seat slidably mounted to each of two limbs of a backrest frame member of the stroller. Each slidable seat includes a receptacle, a spring mounted in the receptacle, a first pin mounted above the spring and transversely passing through an associated limb of the backrest frame member, a stop piece mounted in the receptacle and located above the first pin thereby defining a lowermost position of the slidable seat, and a second pin projecting outward from an outer periphery thereof. A pull bar is mounted between the slidable seats. The second pins engage with sockets defined in a frame of the stroller when the backrest frame member is in a substantially upright position. The backrest frame member is pivotable to a substantially horizontal position when the second pins disengage with the sockets upon actuation of the pull bar which causes upward movement of the slidable seats.

Abstract: A gripper bar conveyor mechanism for transferring sheets to be printed from one rotating impression cylinder to another in a multiple color rotary offset printer of the type having sets of impression cylinders and corresponding blanket cylinders for rolling contact with the sheets to be printed therebetween. The gripper bar conveyor mechanism includes a transferrable gripper bar activatable for releasably securing sheets to be printed in a fixed orientation with respect to the transferrable gripper bar. The registration projection is affixed to the transferrable gripper bar. A registration pocket is adjustably affixed to each of the impression cylinders for temporarily receiving the registration projection of the gripper bar and thereby holding the gripper bar in a desired position with respect to the impression cylinder. A conveyor band is attached to the gripper bar and is operably connected to the rotary offset press for moving the gripper bar from one impression cylinder to the next.

Abstract: A display apparatus having a display body with a square recess in one face thereof cooperating with a square easel foot which may be stored flat therein. The easel foot has a through slot extending from one edge thereof to an end close to the opposite edge. A pair of detent engagement pins are positioned on the sides of the foot on opposite sides of the slot. Storage detent holes in opposed sidewalls of the recess are provided, as well as two pairs of display detent holes on two different opposed walls of the recess.

Abstract: A drawing implement box includes a first ruler section, a second ruler section which has a scale of angles thereon, and a positioning member for securing the first and second ruler sections together yet allowing relative rotational movements therebetween for measuring angles. Each of the first and second ruler sections has a compartment therein for receiving a drawing implement goods.