Abstract: A cable chain for mounting on an automobile tire to provide improved traction in snow or ice conditions, comprises two longitudinal cables and a plurality of transverse cables each having two ends attached to the two longitudinal cables respectively. When the longitudinal cables are mounted on the tire and extend substantially peripherally thereof at opposite respective sides of the tire, the transverse cables extend across the tire tread. Traction sleeves are mounted on at least one of the transverse cables, and each traction sleeve has multiple lateral faces each having two substantially planar edge regions and a recessed portion therebetween.

Abstract: An electrode for use in in situ vitrification of soil comprises a molybdenum rod received within a conductive sleeve or collar formed of graphite. Electrodes of this type are placed on either side of a region containing buried waste material and an electric current is passed therebetween for vitrifying the soil between the electrodes. The graphite collar enhances the thermal conductivity of the electrode, bringing heat to the surface, and preventing the formation of a cold cap of material above the ground surface. The annulus between the molybdenum rod electrode and the graphite collar is filled with a conductive ceramic powder of a type that sinters upon the molybdenum rod, protecting the same from oxidation as the graphite material is consumed, or a metal powder which liquifies at operating temperatures. The molybdenum rod in the former case may be coated with an oxidation protectant, e.g. of molybdenum disilicide.

Abstract: An apparatus for influencing a flow of air through a passageway defined between an inner wall and a double outer wall that includes first and second walls each formed with an opening, comprises a first door, a second door, vortex generation means positioned between the first and second walls and adjacent the upstream end of the opening in the first wall, and an actuator pivotally attached to the first and second doors. The actuator has a first condition wherein the first and second doors close the openings in the first and second walls respectively and has a second condition wherein the first door is at the downstream end of the opening in the first wall and extends across the passageway and directs the flow of air through the opening in the first wall, and the second door is at the down-stream end of the opening in the second wall and deflects the flow of air through that opening.

Abstract: The present invention relates to a security device having a control box (12) containing an electronic system (50) and a communications loop (14) over which the system transmits a signal. The device is constructed so that the communications loop can extend from the control box across the boundary of a portal such as a door into a sealed enclosure into which access is restricted whereby the loop must be damaged or moved in order for an entry to be made into the enclosure. The device is adapted for detecting unauthorized entries into such enclosures such as rooms or containers and for recording the time at which such entries occur for later reference. Additionally, the device detects attempts to tamper or interfere with the operation of the device itself and records the time at which such events take place.

Abstract: A method and a device for threading the end of a web (P) from a jumbo roll (30) or equivalent through a winder along a path determined by members guiding the web (P). The end of the web (P) is passed from the jumbo roll (30) through the winder as a full width by grasping the end of the web (P) placed on the jumbo roll by means of a fetching and grasping device (13) and is held by means of the web (P) holding device (13). The web (P) is detached from the fetching and grasping device (11), attached to a threading member (22) carried by a carrier device (12), detached from the web (P) holding device (13), and threaded as a single thickness through the winder, whereby web (P) is unwound from the jumbo roll (30). The web (P) is cut off before the web (P) is attached to the threading member (22) carried by the carrier device (12).

Abstract: Differential amplifier apparatus comprises a summing and inverting network for developing an output signal of which the magnitude is proportional to the common mode component of an input signal received at first and second input terminals of the apparatus and of which the polarity is opposite the polarity of the common mode component. A summing network is connected to the first and second input terminals and to the output of the summing and inverting network and has first and second intermediate nodes. A first differential amplifier has a non-inverting input connected to a first intermediate node of the summing network, and a second differential amplifier has a non-inverting input connected to the second intermediate node of the summing network. A bridging resistor is connected between the inverting inputs of the first and second differential amplifiers.

Abstract: An automatic incubator comprises a chamber surrounded by a water jacket and insulation and provided with temperature and gas level sensors, a gas injection solenoid valve and separate water jacket and air heaters together with microprocessor proportional-integral-derivative control for regulating temperature and gas concentration within the chamber. A fan is provided to circulate gas within the chamber and distribute heat. Manual set controls for selecting desired temperature and gas levels are provided as well as temperature and gas level displays, high and low temperature and gas indicators, and a low water jacket level indicator.

Abstract: The mechanism 204 prevents reversal of the torque of shaft 203 by braking two disc members 206, 207 against braking surfaces of a casing 205. Under normal operating conditions the member 206 is turned by a motor 202 controlling a load 200 in a direction which causes its drive to be transmitted through balls 221 to the member 207. In this condition minimal braking occurs. If the direction of the shaft 203 is reversed, the balls 221 force apart contiguous camming surfaces on the disc members so that their braking surfaces engage the casing to brake the shaft 203. Controlled manual release of the load under braked conditions is permitted by turning a handle 224 driving a shaft 210 which turns the member 207. Minimal braking friction during normal operations is reduced still further by creating a cushion of oil between the braking surfaces, the oil being provided by a gear pump 216 driven off the shaft 210.

Abstract: An installation module for sanitary equipment, comprising a foamed support structure in which the elements needed for supply to and discharge from the sanitary equipment are embedded, comprising fastening connections for suspension or erection of the support structure, on the one hand, and for hooking up the sanitary equipment, on the other hand. The support structure is joined of plugged longitudinal and transverse profiled sections held together by the foamed material, preferably of two lateral sectional supports (1) defining the sides of the installation module and being interconnected by a transverse profiled section (2) inserted in the bottom area of the installation module. With their profiling and incorporated recesses/slits, the sectional supports plugged together present a substantially stiff-angled carrier structure.

Abstract: The invention relates to a detector window for an analyzer, particularly an X-ray analyzer, and to a method for manufacturing the same. The detector window is permeable to soft X-rays when the window is at least on one surface in contact with a pressure essentially equal to that of a vacuum. The detector window of the invention is a thin film, with the thickness of 0.5 .mu.m, and is manufactured by means of photolitography.

Abstract: In an automatic sawmill, logs are first sawn horizontally into pieces that are respectively deposited flat side down on a bed plate and conveyed through multiple, close spaced horizontal bandsaws located above the bed plate. Sawn cants are positioned by clamps to have their waney edges removed by a flying saw after clamp retraction.

Abstract: A class AB amplifier comprises a pull-up structure of an E-FET and D-FET connected in parallel and a pull-down structure of an E-FET and D-FET connected in parallel. Use of the E-FETs allows a high peak current to be achieved without increasing the quiescent current to an undesirable level. The pull-up structure and the pull-down structure are driven by currents that are out-of-phase, and accordingly linear push-pull operation is provided.

Abstract: The invention relates to a method for picking up sheets of paper, cardboard or similar, especially porous material, one at a time from a pile of sheets for onward transfer, using a gripping apparatus fitted with gripping means and a sheet support disk, and a gripping apparatus for effecting the method. According to the invention when the gripping apparatus is brought to the pile of sheets it achieves the following steps:a. the pile of sheets is pressed on its top in the central region thereof,b. the gripping means is moved and presses the top of the pile on both sides of said central region,c. the top sheet on the pile is distorted preferably from both sides of the central region of the pile by making use of movement of the gripping means towards the central region of the pile so that said top sheet bends partly clear from the sheet under it,d.

Abstract: An electromechanical door lock comprises a lock body (1), in which is a dead bolt (3) which can be dead locked in its protruding position and electrically withdrawn into the lock body, a latch (4) which is spring loaded to be protruding from the lock body and which centralizes the dead bolt in an opening in a striking plate (18) arranged for the door lock, and force transmission means (8-14) for transmitting force from an electrical operating device (7) to the dead bolt (3). Said latch (4) includes in a way known as such a body member (4c) moveable inside the lock body to which is jointed a wedge-shaped member (4a, 4b), protruding at least partly out from the lock body when the latch is in the protruding position, so that the latch (4) can be pressed inside the lock body when a force acts on said wedge-shaped member (4a, 4b) from either side of the lock body in the direction of the door opening or closing.

Abstract: A parallel processing system utilizes a plurality of simultaneously operable arithmetic units to provide matrix-vector products, with each of the arithmetic units implementing the matrix-vector product calculations for plural rows of a matrix stored as vectors in an arithmetic unit. A column of a second matrix is broadcast to the respective arithmetic units whereby the products may be developed in all the arithmetic units simultaneously. The broadcasting of the matrix elements is accomplished via a memory bus which may be employed for selectively or simultaneously accessing registers in the various arithmetic units whereby vector information may be written into memory addresses and calculation results retrieved therefrom.

Abstract: An installation module or block, comprising a molded body, especially a foamed body (4) in which the pipes and structural members (5,6,7) needed for supply to and discharge from corresponding sanitary equipment are embedded as well as the fastening means needed to mount the sanitary equipment. A fire protection substance (10) spread substantially across the full area of the module is molded in the module between the front and rear walls (8, 9) thereof. Thus, when an installation module is built into a wall (3), that wall directly corresponds to the fire resistance class required under the building regulations.

Abstract: A heat exchanger is constructed from a heat-conductive metal foil wound backwards and forwards in sinuous fashion to provide a stack of parallel pockets (1) between neighboring sections (8) of the foil. The pockets (1) contain baffles (5,6) which guide fluid flowing through the pockets to follow a serpentine path of U, S or M shape. The serpentine path in all the pockets is substantially the same shape but the direction of fluid flow (13) in alternate pockets is opposite to the flow direction (14) in the remaining pockets. Two corner regions of the pocket stack are each provided with two manifolds (15,16) one of which communicates with the alternate pockets (1) and the other manifold communicates with the remaining pockets (16). The pockets may be formed from a signal foil or from two or more foils. The manifolds may be arranged on diagonally opposite, or on adjacent corner regions of the stack.

Abstract: A flow control device including a base, a ball caused to seal an opening of the base by water flow through the water inlet of the base, an impeller rotatably received in the base and can be propelled by water flow through the base, a plunger having a lower end contacting the ball, a gear frictionally engaged on an axle of a wheel and coupled to the impeller by a gearing so that the wheel can be caused to rotate by the impeller, the plunger can be caused to move up and down when the wheel rotates so that the ball can be caused to seal the opening of the base again.

Abstract: A circuit for converting ECL logic level signals to CMOS logic level signals comprises a differential amplifier defining first and second current paths that are connected to a negative reference potential level. When the ECL input signal is logical zero, the first current path is non-conductive and the second path is conductive, and vice versa when the input signal is logical one. A first transistor has its base connected to the first current path, its emitter connected to a positive reference potential level, and its collector connected to the second current path. A second transistor has its base connected to the second current path, its emitter connected to the output terminal, and its collector connected to a ground reference potential level. A pull-up resistor is connected between the collector and emitter of the first transistor.

Abstract: A differential mechanism is provided with two output shafts 202 and 204 coaxially arranged and extending to wheels 203 and 205 of a vehicle. The differential is provided with a pair of connected discs 221, 209, the disc 209 being rotated about the common axis of the shafts 204, 202 by a drive shaft 206 and a pinion. An intermediate shaft 211 is eccentrically positioned between the two discs 209, 221 and is formed with a circumferentially extending spiral tooth 241. The tooth 241 engages a driving gear 217 fixed to the shaft 202 at one end-portion and the other end-portion of the member 240 provides a member in mesh with the second member 216 fixed to the shaft 204. The teeth of the members 216 and 240 are shaped and positioned so that drive between them is inefficient but they will translate over one another if the member 216 is rotated in the same direction and at the same speed as the member 240.