Abstract: A rotary displacement compressor has an adjustable regulator (22) which determines the internal volume ratio of the compressor. The regulator (22) is adjusted in response to the sound level of a sound of compressed working medium, which is sensed by a sound sensor (26) located adjacent to the outlet port (20 ) of the compressor.

Abstract: An image forming apparatus including a lower half body; an upper half body which is mounted on the lower half body and has an axis arranged in parallel to a sheet passage so that the upper half body can be pivoted around the axis; and a platen cover provided on the upper half body so as to open or close in the same direction as that of the upper half body: wherein the sum of pivot angle of the upper half body and the platen cover is smaller than 90 degrees.

Abstract: A data reproducing method includes the steps of causing an optical information recording and reproducing apparatus to read first data from an optical information recording and reproducing medium when a first reproduction request is received, and storing the first data in a temporary storage memory. During the processing step of the host computer, the stored first data is processed by the host computer. At the predicting step, second data that specified by a second reproduction request is predicted, on the basis of the first data during at least one of the data processing period of the host computer and the period for storing the first data in the temporary storage memory. During the transferring step, the predicted second data is read from the optical information recording and reproducing medium and then transferred to the temporary storage memory, before the second reproduction request is made.

Abstract: A suspension system comprises front and rear cantilever spring arms. First end portions of the arms are fixed to a vehicle body. Second end portions of the arms extend toward a member for supporting a wheel. The second end portions are connected to each other by means of a curved section. The spring arms are formed integrally with the curved section through the medium of the matrix resin and the fibers so as to be V-shaped as viewed from above. A joint assembly is fixed to the curved section, and a hub carrier is mounted on the assembly.

Abstract: A car stereo set is disposed in a dead space inside a car which can be reached by a person sitting on the rear seat of the car, e.g. a central armrest, side armrest, rear side wall, or the back of a front seat. The car stereo set may be reduced to unit configuration so that it may start a sound reproduction operation immediately when it is inserted into a receptacle formed inside or outside the car. Further, the car stereo set may include a pair of car stereo units (both of which include a tape recorder) and a stereo switching mechanism. When a cassette tape is inserted into the tape recorder--of one unit--reproduction of the other car stereo unit is interrupted, a cassette tape inside the tape recorder--of the other unit--is ejected, and a reproduction operation based on the newly inserted cassette is started.

Abstract: A calculator having an integration function has at least a key input section which in turn has registering keys for inputting data for setting a function to be integrated and an interval of integration, and executing keys for performing the definite integrating function. The function to be integrated is stored in a predetermined register of a RAM by key operation on the key input section. A dividing number for dividing the interval of integration input by the key operation is stored in another register. The interval of integration is divided by the dividing number stored in the latter register. The integrating function is performed sequentially based on the function to be integrated every interval of integration divided by a dividing means and the data input by the key operation for setting the interval of integration.