Abstract:
A grease composition for constant velocity joint, particularly Zeppa type joint comprises a base oil and contains (A) a particular diurea compound as a thickener, (B) molybdenum sulfide dialkyldithiocarbamate, (C) an extreme pressure additive of zinc dithiophosphate, (D) a sulfur-phosphorus series extreme pressure additive containing no metallic element and having a sulfur content of 10-30% by weight and a phosphorus content of 0.5-5% by weight, and (E) lead dialkyldithiocarbamate as an essential component.
Abstract:
A piezoelectric transducer comprising first and second members in axial alignment and spaced apart, the first and second members being mutually displaceable toward and away from each other, and a transducer assembly disposed between the first and second members. The assembly includes a stationary means (first member), a piezoelectric element facing the stationary means on its entire surface, and a force converting means (second member) for generating a transverse force in direction radially outward from a center axis, facing the piezoelectric element at entire surface. The stationary means, the piezoelectric element and the force converting means are contained sequentially between the first and the second member.
Abstract:
A mounting device for a pressure sensor is disclosed. The mounting device comprises a cylinder head having a threaded hole for mounting a spark plug, a sensor housing orifice penetrating into a combustion chamber and a sensor pressure receiving section in the sensor housing orifice. A pressure sensor is mounted in the sensor housing orifice. The pressure sensor comprises a housing inserted into the sensor housing orifice and having a pressure receiving section for directly receiving the combustion pressure, and a piezoelectric device housed in the housing and producing a voltage corresponding to the combustion pressure received at the pressure received section. The device comprises a presser member pressing the pressure sensor toward the pressure receiving section by tightening of the spark plug. A vibration absorbing member is interposed between the presser member and the pressure sensor so as to absorb the vibration and the displacement transmitted from the presser member.
Abstract:
A pressure measuring instrument for the measurement of the combustion chamber pressure in a cylinder of an internal combustion engine, comprises a piezoelectric pressure sensor. The sensor includes an annular disk-like electrode with an output terminal, a piezoelectric element in contact with said electrode, a pair of annular pressure acting members having interposed therebetween said electrode and said piezoelectric element, and a lead. The piezoelectric pressure sensor is disposed between a first wall on a cylinder head and a second wall of a spark plug.
Abstract:
An ultrasonic vehicle rangefinder having a detecting system for discriminating whether trouble is in transmission or reception side is shown. The discrimination is established by detection of an attenuation vibration at a transmission microphone.
Abstract:
A simple and shock-resistant device to measure angular acceleration about a predefined axis without using any spinning or vibrating mass. The device comprises a weight having a shape symmetrical with respect to an axis which becomes the aforementioned predefined axis, a stress transducer such as a piezoelectric element which is attached to the weight so as to have sensitivity to shear stress in a circumferential direction about the aforementioned axis, and a base member to which the assembly of the weight and the transducer is fixed such that at least a major portion of the weight is spaced from the base member. For example, the weight is a generally circular metal plate and the transducer is a ring-shaped element of a piezoelectric ceramic material having electrode films on the annular surfaces.
Abstract:
Disclosed is a spark ignition timing control system for a split type multi-cylinder internal combustion engine which operates to advance the spark advance angle of a specific combustion chamber relative to other combustion chambers. The control system generally comprises a means for detecting a knocking condition and generating knocking signal so as to retard spark advance angle corresponding to knocking of engine and a means for detecting engine load condition and thereafter advancing the spark advance angle of the specific combustion chamber when the engine is driven at relatively high loads.
Abstract:
A multilayered printed wiring board includes a plurality of insulating layers; a plurality of wiring layers which are located between the corresponding adjacent insulating layers; and a plurality of interlayer connection conductors for electrically connecting the wiring layers through the insulating layers; wherein a cavity is formed through one or more of the insulating layers so as to insert a first electric/electronic component and an area for embedding a second electric/electronic component is defined for the insulating layers.
Abstract:
An SRAM cell using a vertical MISFET is provided, wherein underside source/drain areas of a first access transistor, a first driving transistor and a first load transistor are connected together, and further connected to gates of a second driving transistor and a second load transistor. Underside source/drain areas of a second access transistor, the second driving transistor and the second load transistor are connected together, and further connected to gates of the first driving transistor and the first load transistor. A first arrangement of the first access transistor, the first driving transistor and the first load transistor, and a second arrangement of the second access transistor, the second driving transistor and the second load transistor are symmetric to each other.
Abstract:
A multilayered printed wiring board includes a plurality of insulating layers; a plurality of wiring layers which are located between the corresponding adjacent insulating layers; and a plurality of interlayer connection conductors for electrically connecting the wiring layers through the insulating layers; wherein a cavity is formed through one or more of the insulating layers so as to insert a first electric/electronic component and an area for embedding a second electric/electronic component is defined for the insulating layers.