Abstract: A control apparatus for a hydraulically operated vehicular transmission includes a orifice, a bypass path bypassing the orifice and a switching valve provided in the bypass path. The orifice and bypass path are provided in an hydraulic oil supplying path to a hydraulic pressure coupling element provided in said hydraulically operated vehicular transmission. The switching valve shuts off said bypass path in association with the throttle of an engine at a low opening time when a throttle opening degree is equal to or lower than a first predetermined value and at a high opening time when the throttle opening degree is equal to or higher than a second predetermined value which is higher than the first predetermined value.

Abstract: A filter apparatus includes a box-shaped casing formed by connecting peripheral edges of first and second casing members each having a concavity and a filter composed of first and second filter media placed one upon the other and having respective peripheries held between substantially the entire peripheral edges of the first and second casing members such that the filter assumes the shape of a bag when disposed in the casing. The casing has a suction port and an exhaust port each communicating between the interior and the exterior of the casing. The filter communicates with the exterior of the apparatus through the suction or exhaust port of the casing. The first and second filter media have respective through holes and are closely adhered together at peripheral portions of the respective through holes.

Abstract: In a filter device suitable for use in an automotive automatic transmission system employing a fluid torque converter, two layers of filter sheets are interposed between upper and lower casing halves provided with an outlet and an inlet, respectively. The inlet is communicated with a filter chamber defined between the upper and lower filter sheets, and a communication passage is defined between an upper chamber and a lower chamber defined above and below the filter sheets inside the casing, respectively. A pair of flow paths are defined between the inlet and the outlet. The first of the flow paths passes the upper filter sheet and heads directly for the outlet. The second of the flow paths passes through the lower filter sheet, and passes through the communication passage before heading for the outlet. An obstruction is provided in the first flow path to the end of evenly or optimally distributing the flow of the working fluid between the two filter sheets.