Abstract: The telecommunications transmission security arrangement comprises first and second transmission paths, each having first and second serially connected circuit means. The first circuit means of said first path is arranged to be connectable to the second circuit means of said second path. The first circuit means of the second path is arranged to be connectable to the second circuit means of the first path, and the second circuit means of each path are arranged to monitor alarm conditions of the transmission paths and set up a transmission path by way of the first circuit means of the first path and the second circuit means of the second path when the first path is determined not suitable for transmission. A transmission path is set up by way of the first circuit means of the second path and the second circuit means of the first path when the second path is determined not suitable for transmission.

Abstract: Disclosed is an outside rear-view mirror for a vehicle, having a mirror base and a mirror housing which is adapted to assume a normal position for use relative to said mirror base and to rock forwardly and rearwardly and which is coupled to said mirror base by a rocker. To reduce the danger of injuries particularly of fingers, caused by a back-swinging mirror housing between said mirror and said mirror base, at least one spreading spring is provided one end of which abuts said mirror housing and the other end of which abuts said mirror base, and which urges said housing to a fully backward tilted position relative to said mirror base.

Abstract: A pipe harness clamp for use when two pipes, which may be of different materials, are axially coupled, includes arcuate clamping portions for contacting outer surfaces of a pipe and radially extending portions for bolting together. An elastomeric liner is fitted around the pipe, under the clamp, to assure a close fit between the pipe contour and the clamp. Stiffening gussets extend on the outside of the clamp between the arcuate clamping portions and the radially extending portions, in a plane substantially perpendicular to the axis of the pipe. Preload washers, such as disk washers, are provided on the clamping bolts to control preload. A plurality of washers may be used on each bolt. Belleville washers are preferred. The belleville washers compensate for any relaxation of the clamp halves and bolts and preload is not significantly reduced, thus maintaining load capacity of the clamp.

Abstract: Conductive metal powders having high conductivity with minimized silver migration are characterized in that an average composition is represented by Ag.sub.x M.sub.1-x (wherein M is at least one metal selected from Ni, Co, Cu and Fe; 0.01.ltoreq.x.ltoreq.0.4) and has a region wherein a silver concentration progressively increases on moving from the inner part toward the surface. The conductive metal powders, which are useful as leads, electrodes and shielding from electromagnetic interference are prepared by solidifying rapidly a molten metal having the specific composition.

Abstract: A bimetallic saw blade or band saw includes a support strip (1) and a tool steel top layer (2) of high speed tool steel and sawteeth (6) in at least the top layer. The support strip is martensitically hardenable maraging steel having a maximum carbon concentration of 0.05 wt. % and a content of alloying elements of at least 10 wt. %.

Abstract: A housing of a vacuum switch has in an upper connecting region a passage, through which the connecting element is led. The latter engages with its end region in a recess, opposite the passage, in the housing. In the region of the passage, the connecting element is supported on a support tongue and clamped tight by a wedge-shaped retaining member. The vacuum switch chamber is bolted on to the connecting element. The connecting element can also be secured to the housing at the support point opposite the passage.

Abstract: A staple remover has nippers formed on a side of its pivot opposite the staple removing jaws for gripping a staple bar. The nippers are formed by cross-bars connecting opposite flanges of the body members which form the staple remover.

Abstract: Disclosed are dynamic dampers for suppressing harmful vibrations excited in a rotary shaft which enable to complete the installation thereof around the rotary shaft by only fixing one end thereof on the rotary shaft without imparing the performances thereof. One of the dynamic dampers are provided with elastic members disposed at both ends thereof, only one of the elastic members has an engaging groove going round the outer surface thereof, and the inner diameter of one of the elastic members is made larger than that of the other elastic member.

Abstract: The invention provides novel fluorine-containing bismaleimides represented by the general formula shown below. The bismaleimides are obtained by dehydrating and cyclizing reaction of corresponding bismaleamic acids which are also novel compounds. For example, maleic anhydride is used for preparing the bismaleamic acids. A mixture of a bismaleimide of the invention and a diamine is useful as a thermosetting resin composition. At 100.degree.-300.degree. C. the resin composition undergoes addition polymerization to turn into a solid resin which are high in moisture resistance and low in dielectric constant. For use in the resin composition it is preferable that both R.sup.1 and R.sup.2 in the general formula of the bismaleimide are --CF.sub.3. ##STR1## wherein A represents a divalent organic group having an ethylenic unsaturated bond; Rf represents fluorine atom or a perfluoroalkyl group; R.sup.1 and R.sup.

Abstract: A sound signal coding method and installation are disclosed, which method, usable particularly for transmitting or storing high quality audio signals in digital form, involves chopping the sound signal into blocks of samples and subjecting the samples of each block to time-frequency transform coding whose coefficients are transmitted in digital form, the reverse operations taking place at reception. At least the most significant coefficients of the transform of each block are subjected to predictive and adaptive coding using the stationary state of the signal over a duration greater than that of a block.

Abstract: An air bag system includes an air bag unit having an air bag to be inflated, an inflator for generating a gas for the air bag and a casing for receiving the air bag in a folded state in a normal condition. An instrument panel provides a space in which the air bag unit is disposed, a dash upper panel is disposed in front of the air bag unit in a longitudinal direction of the vehicle, and a protective structure or device prevents the dash upper panel from interfering with a proper operation of the air bag unit. A proper operation of the air bag system can, therefore, be successfully maintained.

Abstract: The current invention relates to an anti-fouling system for substances in contact with seawater which is constituted of the first conductive membrane that is coated on the outer side of the electric insulator mounted at the surface of the substance such as ships, marine structures in contact with seawater and is composed of thin sheets of metals having low specific resistance or metal oxide, spray-coated membrane, evaporated membrane or fused membrane, and the second conductive anti-fouling membrane having higher electric resistance than the first conductive membrane which is coated on the outer side of the above first conductive membrane and which is composed of the oxidation-resistant insoluble substance and the organic binder, and the power supply equipment that supplies direct currents flowing from the first conductive membrane through the second conductive membrane toward the electric conductor made of iron, copper or carbon located in seawater and opposite the second conductive membrane, owing to the co

Abstract: A dumping trailer and truck for containers has a frame for mounting and keeping firmly a container thereon and an oil pressure cylinder possible to raise the frame inclinedly with its front up so shock-enduring goods such as scrap, grain, etc., can be loaded in a container inclinedly raised up through an opening at the front or unloaded from a container inclinedly raised up through an opening at the rear.

Abstract: Cosmetic compositions for treating the hair, nails and skin are described which contain, in a solvent medium, at least one amphoteric polymer of betainised dialkylaminoalkyl (meth)acrylate or dialkylaminoalkyl(meth)acrylamide, containing at least units of the formula: ##STR1## in which R.sub.1 denotes a hydrogen atom or a methyl group, R.sub.2 denotes an alkylene group having 1 to 4 carbon atoms, Y denotes O or NH and R.sub.3 and R.sub.4 independently of one another denote hydrogen or alkyl having 1 to 4 carbon atoms, and at least one cationic derivative.

Abstract: A concrete joint in concrete slab structures in which the joint includes an insert that is retained in centered position in a slot or recess formed in the upper surface of a concrete slab generally in alignment with a crack or fracture line extending downwardly from the slot or recess formed in the concrete slab. The bottom of the slot or recess is provided with a seal of cementitious material which extends completely across the bottom of the slot or recess and fills the crack or fracture line with the lower edge of the insert being inserted partially into the cementitious seal which is in the form of a quick setting sand and cement mixture which has high compression strength and low tensile strength and which will adhere to concrete surfaces but will not adhere to the insert. The space above the bottom seal on each side of the insert is then filled with a filler of an epoxy or similar material which encapsulates the spring clips and fills the slot or recess on both sides of the insert.

Abstract: A king of handle lock with improved engagement and linking-up comprises a base with a handle. The base contains a base plate, driving members, a face plate, an inside knob, and a press handle. By the inner moving tube engaged with the driving plate of latch, the inside knob and outside knob will alone drive the inner moving tube.