Abstract: Provided is a fuel level sensing apparatus for a fuel tank for sensing a remaining fuel level of the fuel tank through a variation in a measured resistance value depending on a position of a wiper in contact with a resistance substrate. The resistance substrate includes a first segment part and a second segment part disposed to be spaced apart from each other. A resistance setting part of the second segment part is connected to positive electrode terminals, and a connecting part of the first segment part is connected to a negative electrode terminal by a negative electrode lead. A connection point of the negative electrode lead connected to the connecting part is formed between both ends of the connecting part in a length direction. A resistance deviation in a measured resistance value depending on a change in the position of the wiper may be reduced.

Abstract: A multi-directional switch contains a bearing 4, an operating shaft 3 supported rockably by the bearing 4, and a cam 15c for giving a required feeling of operation to a rocking operation of the operating shaft 3. In the cam 15c, a spherical surface-shaped bottom portion 41 for holding the operating shaft 3 in a non-operation position, first inclined surfaces 42, 43, 44 and 45 formed in a radial shape at an outer circumference of the bottom portion 41, and second inclined surfaces 46, 47, 48 and 49 formed in a radial shape at an outer circumference of the first inclined surfaces, are formed, and at the boundaries between the first inclined surfaces and the second inclined surfaces, swelled step portions 50, 51, 52 and 53 are formed, respectively.

Abstract: It is an object to perform a near rotating control of a rotary element. As a construction, disclosed is a rotating position control apparatus having a potentiometer constructed by a contact element rotating in accordance with the rotation of a rotary element and a resistive element on which the contact element slides, a control unit for driving the rotation of the rotary element to a plurality of rotating positions on the basis of an output of the potentiometer, and an insulator which is provided between both ends of the resistive element in the potentiometer and on which the contact element can slide, wherein the apparatus includes an A/D converting unit for A/D converting the output of the potentiometer and drives the rotation of the rotary element from the current rotating position to a target rotating position on the basis of a value obtained by A/D converting the output of the potentiometer through the A/D converting unit and a command code to instruct the rotating position of the rotary element.

Abstract: A variable resistor includes a first resistor having linear resistance or attenuation characteristic, a second resistor disposed along the first resistor and having the linear resistance or attenuation characteristic, and a slider for bridging the first and second resistors, wherein one end of each of the first and second resistors is connected with each other.

Abstract: A miniature electro-mechanical transducer uses a body of elastomeric material composed of alternate layers of flexible dielectric material and flexible conductive material. The ends of the layers form opposite surfaces. An actuating member moves against one surface and the other surface contacts two spaced electrodes. The arrangement is such that a progressively increasing number of layers of conductive material are brought into an electrically parallel circuit between the electrodes.

Abstract: A thermal ink jet printer utilizes a printhead resistor which has a central conductive region to excite bubble growth and to cause ejection of ink droplets. The existence of the central conductive region causes bubbles to be created which are toroidal in shape and which fragment during collapse, thereby randomly distributing the resultant acoustic shock across the surface of the printhead resistor and minimizing cavitation damage.

Abstract: An electric potentiometer is proposed which serves to convert a mechanical movement into an electrical value. The potentiometer includes a pickup embodied as a wiper and a resistor pad which has a plurality of connections for parallel resistors distributed over the displacement range of the pickup and serving as support points. With these parallel resistors, the partial resistance established by the pickup can be varied to a predetermined course. The support points extend crosswise to the contact track of the pickup on the resistor pad and are embodied as only so long that they terminate before reaching the contact track.

Abstract: A regulation device is disclosed, for regulating a physical magnitude as a function of two independent parameters: the parameters can be, for example, parameters of interest in the operation of an internal-combustion engine. Instead of the conventional space cam, a surface is provided on which the third dimension is represented by different voltage so as to define on such a planar or curved surface a family of equipotential curves. The readings taken by a conductive follower are mechanically converted so as to govern the appropriate component parts of an engine so as to have an automatical adjustment of certain parameters. The device is dependable and reliable and cannot be prone to jamming or mechanical defects. The device is of the potentiometric class.

Abstract: A variable-resistance attenuator having first and second resistive layers deposited upon an insulating substrate. Input and output terminals are electrically connected at spaced intervals to one of the resistive layers and a common terminal is electrically connected to the remaining one of the resistive layers. A pair of contacts are adapted to make slidable electrical engagement, each with an associated one of the resistive layers. Conductive bridging means mechanically and electrically connect the sliding contacts. Mechanical means are provided for simultaneous movement of the sliding contacts to change the resistance in a smooth and continuous fashion.

Abstract: A trimming potentiometer in which three parallel resistance paths are located in a plane on an insulating plate. Wiper contacts are displaceable in the same direction on the resistance paths, and are attached to a common carrier which is longitudinally displaceable by a threaded spindle. Inductance loops are arranged between the resistance paths and the respective terminals for the paths, for the purpose of matching the trimming potentiometer to its inductance and capacitive input and output values.