Abstract: An elliptic beam antenna easy to design and simple in structure. To generate elliptic beams of about the same size regardless of the kind of polarized waves for excitation, a horn antenna or waveguide structure intended for radiating out radio waves into space features the provision of diamond aperture, modified from the conventional circular, elliptical, square or rectangular one and excitation of radio waves in diagonal directions.

Abstract: A massager having a massage unit provided with elongate coaxial massage rollers rotational on a common axis in a common plane extending above the unit transversely of a travel path defined by a pair of laterally spaced parallel racks on which the unit reciprocably travels on two pairs of gears on opposite sides of the unit and engaged with the racks. A reversible electric motor provides all the necessary drive and associated coupling elements couple the electric motor for drive of the massage rollers and gears for reciprocable travel of the massage unit.

Abstract: A power steering device for automobile type vehicles having a hydraulic power cylinder for assisting in steering front end wheels of the vehicle. The hydraulic power cylinder has a piston and piston rod fixed thereto reciprocable in two opposite directions of travel. The opposite ends of the piston rod are linked to respective front wheels of the vehicle for turning the individual steering wheels in a direction in which the piston rod travels. The piston rod has a rack with which a pinion is engaged and rotated by a shaft rotated by a drum coupled to the shaft for effecting manual steering. Another drum is provided and is rotated by the steering wheel by the vehicle driver. The drums are operationally coupled by a pair of flexible cables for rotating the drums by the steering wheel to move the piston rod rack in the desired steering direction. A direction control valve having a rotatable rotor is coupled to the drum which drives the rack pinion.

Abstract: Process for chemical polishing of austenitic stainless steel surfaces using chemical polishing baths effective at a slow rate of reaction. The baths include in an aqueous solution a mixture of hydrochloric acid, nitric acid and phosphoric acid, an optionally substituted hydroxybenzoic acid, at least one quaternary ammonium salt and an additive chosen from perchloric acid and water-soluble salts of perchloric acid.

Abstract: An energy-absorbing device for an automobile steering column adjustable in depth and/or inclination mounted on a support structure fixed to the vehicle body. The body-tube and steering shaft are clamped and locked in the support structure. A securing device with a rotatable elongate tightening element, such as a bolt or rod, and an operator for rotating the axis of the tightening element clamps the body-tube between coacting clamping elements and vertical sides of the support structure. Provision is made for depth adjustment and inclination of the steering column body-tube by slots in the clamping elements and support structure that allow positioning the tightening element axis at a selected position in accordance with a selected depth and inclination of the body-tube.

Abstract: An energy-absorbing device for an automobile steering column adjustable in depth and/or inclination mounted on a support structure fixed to the vehicle body. The body-tube and steering shaft are received in the support structure and clamped and locked therein by clamping elements coactive with the support structure. A locking device is provided with a rotatable elongate locking element to which is connected an operator for rotating the axis of the locking element in a direction for clamping the body-tube between coacting clamping elements and vertical sides of the support structure. The locking element is a bolt or rod having reverse pitch nuts on opposite ends and which tighten the sides of the support structure and clamping elements toward the body-tube to lock the body-tube in place when the locking element axis is rotated by the locking device operator.

Abstract: A spawning case for use in an aquarium comprises in combination a rectangular case body (A) and filter (B). The case body (A) is arranged within the aquarium so as to communicate with water. The case body A includes a multiplicity of passage slits (11) and a W-shaped partition member (20) having communication paths (24) formed at its valleys. The filter (B) is removably mounted on the external surface of the case body (A). The filter (B) includes on its one side an intake (C) which is brought into intimate contact with the passage slits (11), and at its upper portion a discharge port (33) capable of being selectively directed toward either the interior or the exterior of the case body (A).

Abstract: A drinking-water service system for supplying individual cylindrical containers of drinking water to athletes. A storage and dispensing unit for storing the containers for semi-automatically sequentially dispensing individually the drinking water containers to athletes. A multi-stage storage and delivery control passageway has a rolling section generally inclined downwardly for receiving and storing the containers disposed side by side and gravity biased. An uprighting section receives the containers from the rolling section successively and its surfaces cause the containers to assume an upright position for travel downwardly to a dispensing section which has a dispensing outlet opening through which the containers are dispensed to a horizontal stand surface.

Abstract: An optical amplifying transmission system is disclosed in which a large quantity of optical fiber whose zero dispersion wavelength is longer than the wavelength of the lightwave signal is introduced to provide an RZ lightwave signal transmission system. In this system, the average zero dispersion wavelength by the optical fiber is shorter than the wavelength of the lightwave signal, the zero dispersion wavelength by the optical fiber whose length is in the range of one-thirds to two-thirds of the entire length of the optical fiber is longer than the wavelength of the lightwave signal, and the absolute value of the wavelength dispersion is larger than one-half the absolute value of the average wavelength dispersion value over the entire length of the optical fiber.