A driving apparatus for an object which can be moved to and fro such as a te wing, comprising a guide block movable along a guide rail (1), said guide block being coupled to the object and to a driving member (2,2') movable by a motor and, with the aim of easy assemblage from only a small number of easily manufacturable components, consisting of a guide block component (3), having slidably supported thereon an actuating member (7), and of a manually actuated coupling member (5) spring-loaded tow...

In a driving apparatus comprising: a. a control for driving matrix electrodes having scanning and information electrodes; b. a counter for counting the number of scanning electrodes to which a scanning selection signal is applied; and c. a control for designating a width of a scanning selection period for every predetermined count value.

A motor comprising a driving magnet attached to a rotor, a stator core which is disposed facing to the driving magnet and on which a coil is wound around each of a plurality of salient poles thereon, a motor frame securing the stator core, a first mounting section provided on the motor frame to mount the neighborhood of the base side of each salient pole, a second mounting section provided on the motor frame and formed integrally therewith to mount the edge side of each salient pole. The first m...

A pile 13 is driven into the ground 5 by a ram 8 driven by a hydraulic cylinder 37. The pile 13 is guided through a guide 2 having a detachable end portion 4 which is embedded in the ground. The guide 2 and cylinder 37 are vertically slideable on a rail 3 and can be raised and lowered by a further hydraulic ram 39 located at the upper end of the rail 3. Further piles are loaded through a door 11 in the side of the guide 2 and each pile is driven in a single stroke. The apparatus is transportable...

A driving device for producing substantially linear movement of a driver comprises a shaftless spiral rotatable around its longitudinal axis. The spiral encloses at least one sliding body which is provided with at least one element projecting from the sliding body which passes between two adjoining turns of the spiral. The sliding body co-operates with an element secured against rotational movement which prevents the sliding body from rotating with the spiral. An elongated element oriented in th...

A driving apparatus for driving an electro-acoustic transducer comprises a power amplifier for supplying a drive power to the transducer, and a feedback circuit for generating a negative impedance. The feedback circuit has a main body portion connected to the amplifier and a control information storage body for storing control information for setting transmission characteristics of the feedback circuit. The storage body is arranged to be disconnected/connected to the main body portion. The main ...

A driving mechanism with a driving pulley having a V-shaped circumferential groove and a driven pulley having a V-shaped circumferential groove. A flexible endless member having chamfered flanks interconnects and spans the pulleys. The diameter of the pulleys can be varied automatically and stepless with regard to each other so that different transmission ratios can be obtained. The flexible endless member consists of one or more layers of steel belts arranged with a mutual play that is greater ...

A driving apparatus for electrically driving a vibrator constituting an acoustic apparatus, wherein the output impedance of the driving apparatus is negative at least one frequency associated with the output sound pressure of the acoustic apparatus among resonance frequencies when the acoustic apparatus is viewed from a terminal for driving the vibrator, and the ratio of the output impedance to the internal impedance inherent in the vibrator never becomes constant over all the acoustic reproduct...

A driving light having a sharp beam cutoff suitable for automobiles and the like, a multiple array of apertures being used with a multiple-zone lens, where each zone of the lens is associated with an aperture, and each lens-aperture combination has an associated element in the condensing system. A condensing system consisting of a series of elliptical reflectors. Each reflector takes light from a source at one focus and reflects it to a second focus which will be at the rear focus of the lens of...

A fixed member defining a first cam surface, a movable member defining a second cam surface, a movable piston support carrying at least two pistons each of which is mounted for movement relative to the piston support and engages the cam surfaces, and means for selectively forcing the pistons against the cam surfaces to cause movement of the movable member and piston support relative to the fixed member.