A theft-preventing device of automobiles mounted on a steering shaft casing and having a key-operated unit. The key-operated unit includes a steering shaft locking means to lock the steering shaft when said key is at a lock position, and an alarm switch to be closed unless the steering shaft is locked. A door switch is mounted on a door of the automobile, which switch is closed when the door is open. An alarm means with a power source is connected in series with the door switch and the alarm swi...

The vehicle is provided with a slippage preventing apparatus and an automatic drive control device. The slippage preventing apparatus is designed to control a degree of slippage of the driven wheel of a vehicle so as not to become too large. The automatic drive control device is adapted to increase or decrease an output of the engine so as to allow a vehicle speed to reach a given value. The slippage preventing apparatus controls operation of the automatic drive control device when a degree of s...

An instantaneously acting fall preventing device comprises a casing containing a locking mechanism, in the form of a series of rings which are adapted to co-operate with a retaining cord, and a connecting element for attachment to a harness or safety belt. The upper ring of the series of rings is provided with a lever which passes through a wall of the casing and extends into a guidance member for the connecting element. When the device is in the unlocked position, the lever is held against an a...

A technique for preventing salt migration in a salt solution at elevated temperature involves selectively coating the container with an RTV (Room Temperature Vulcanizing) dispersion, allowing the dispersion to cure. The coating's slippery surface prevents the salt from creeping up the sides of the container.

A self-aligning bearing is provided with an axial thrust movement preventing system along at least one bearing support structure. The system controls end play within an acceptable range without excessive frictional losses and enables the bearing to withstand considerable axial impact with no function impairment. In the preferred embodiment, the system includes a retaining ring mounted to a shaft supported by a self-aligning bearing. A thrust sleeve is mounted axially inboard of the retaining rin...

An electric corrosion preventing apparatus with a circuit having an indication lamp for indicating an operation state of the apparatus, which is used for preventing an inside wall of a hot-water receptacle, such as a water heater and a boiler, from being corroded by rust. In the circuit, the secondary winding of a voltage-dropping transformer is provided with a couple of diode-capacitor combinations. Those diode-capacitor combinations, respectively, are used for rectifying positive and negative ...

A foot covering article adapted to be worn over the bare foot and directly underneath a sock for the purpose of preventing the formation of blisters when engaging in athletic activities and the like. The article is made of a single, porous, non-woven film-fibril sheet of plexifilamentary strands, wherein the sheet is consolidated by a large number of very small point bonds, and includes a plurality of minute perforations extending through the thickness of the sheet. The sheet is formed into a fo...

A scale deposition from an aqueous slurry of naphthoquinone and phthalic acid can be prevented by adding fine crystals of phthalic acid to the aqueous slurry of naphthoquinone and phthalic acid collected, which slurry is obtained by contacting a gas resulting from a catalytic gas phase oxidation of naphthalene with water or a mother liquor recycled. The fine crystals of phthalic acid have diameters of less than 100.mu., preferably 10 to 40.mu., and can be in an aqueous slurry of phthalic acid pu...

This invention provides a method for preventing reflection. For this purpose and for decreasing the reflecting power of the surface of a light absorbing body of a metal or semi-metal material, the light absorbing body is covered by a light absorbing material of the simple substance of a metal or semi-metal.

A method for preventing the overcharging of coal into a coke oven system in which preheated coal is transported from a storage container to the coke ovens by means of a substantially enclosed continuous conveyor system filled with inert gas. A portion of inert gas within the enclosed conveyor system is carried along with the coal into the coke oven itself. During filling of the oven, this inert gas is carried up and out of the oven standpipes. When the oven becomes filled, however, the standpipe...