Abstract: When a metal strip continuously fed and made of stainless-steel, an aluminum alloy or a nickel alloy is bent followed by welding opposite ends of the metal strip to form a pipe and followed by grinding the pipe, the pipe is subjected to heat treatment after the pipe has been welded and before the pipe is ground. Annealing or normalizing adaptable to the type of the metal is selected as the heat treatment. As a result, work hardening can be relieved by the above processes. Moreover, generation of magnetism attributable to martensitic transformation generated in a portion, in which bending stress is concentrated, can be prevented. Thus, work hardening due to the bending operation during the process for forming the pipe can be relieved so that the following grinding operation is performed accurately. Therefore, generation of partial magnetism due to the bending operation can be prevented so that an excellent image can be formed.

Abstract: A satellite signal tracking system for a GPS receiver, wherein a GPS satellite is recaptured within a very short period of time, after the interruption of reception is cleared as by passing through a tunnel and the like, by widening a band width of the PLL search frequency gradually every after repeating the search for the satellite signal, performing a narrow-band search repeatedly as varying its center frequency along the Doppler shift curve, performing a narrow-band search for a specific period of time which is given by dividing the capture range of the PLL circuit by the Doppler shift rate and a wide-band search with use of an estimated satellite signal receiving frequency which is given by recalculating the Doppler frequency of the GPS satellite at the very moment according to the almanac data of the GPS satellite and is assigned as the center frequency, and, still further, performing the search for GPS satellites repeatedly with the estimated satellite signal receiving frequency in the center for recove

Abstract: A double link type suspension system having an extension member for movably connecting the upper section of a knuckle and an upper control arm movably connected to the side of a vehicle body. A rotatable joint mechanism is provided between the knuckle upper section and the extension member and includes a cylindrical member fixed to the extension member. The axis of the cylindrical member is aligned with an axis line passing through a joint between the lower section of the knuckle and a lower control arm movably connected to the vehicle body side. A pivot shaft fixed to the knuckle upper section is disposed inside the cylindrical member and rotatably supported through two deep groove ball bearings disposed between the pivot shaft and the cylindrical member, thereby reducing jointing error between the knuckle and the extension member thus reducing camber angle error.

Abstract: A microwave bandpass filter having a wide bandwidth, low loss, and yet which requires only a relatively small circuit area. A generally annularly shaped unit-wavelength resonator is formed on a dielectric substrate, disposed between input and output matching circuits. The unit-wavelength resonator is formed by a pair of semi-annular strips disposed opposite one another and having opposing stubs defining therebetween a gap of predetermined width.

Abstract: A tiltable steering wheel for an automotive vehicle includes a steering wheel, a steering shaft, a steering gear, a connecting or intermediate shaft, a steering gear, a connecting or intermediate shaft, means such as a belt fastener for tiltably supporting the steering shaft, and a locking device for locking the steering shaft in a desired position. A rotation axis around which the steering shaft can rotate when tilting the steering wheel intersects or passes near the intersection of a first plane and a second plane when the steering shaft is held in the standard.

Abstract: A complex antenna system including at least two loop antennas crossing each other and connected with each other at the electric neutral points thereof, and a rod antenna positioned at the central portion of the loop antennas. An FM and/or AM tuners combined with the complex antenna system utilizes selected one of the loop antennas for receiving an FM wave so as to avoid multi-path noises.

Abstract: An antenna array system which comprises at least one balanced antenna having an electric neutral point and two output end terminals positioned closely to each other, at least one unbalanced antenna having one end thereof dc-coupled with the electric neutral point of the balance antenna and the other end thereof positioned closely to the end terminals of the balanced antenna, first means for picking up a first frequency wave signal such as FM wave signal from the balanced antenna, and second means for picking up a second frequency wave signal such as an AM wave signal from the unbalanced antenna.

Abstract: An FM receiver provided with an array of antennas and suitable for use in a moving vehicle such as a motorcar, which is provided with means for automatically avoiding multipath noises. The means so operates as to connect one of the antennas in an instantaneously best sensing condition to an FM tuner.