摘要:
A vibration wave driving device that may be manufactured in a short time and with high accuracy includes a vibrating member which has an elastic member and an electro-mechanical energy conversion element and which causes vibration when a drive signal is applied to the electro-mechanical energy conversion element, and a moving member coming into contact with the vibrating member and driven by the vibration, where contact portions of the vibrating member and the moving member are formed such that at least one contact portion protrudes toward the other contact portion and that the vibrating member or the moving member having the protruding contact portion has in a same plane as an end surface of the protruding contact portion a surface of a part other than the protruding contact portion.
摘要:
A recording medium playing apparatus allows an arbitrary and easy selection and reproduction of each information piece of a recording medium carrying a plurality of information pieces which variously represent a scene on the same time axis position during reproduction of information. In the recording medium playing apparatus for playing a recording medium on which same-time information groups each formed by a plurality of information pieces of the same time position are recorded, reproducing means for reproducing information of the recording medium reproduces information of the recording medium by arbitrarily selecting each information piece of the recording medium based on a command for reproducing each same-time information group.
摘要:
The distal end of a flange of a stator serving as a contact member is located on the outer peripheral side of one linear portion of an elastic member serving as a vibration member, and the inner peripheral side of this linear portion of the elastic member is located on the proximal side of the flange. The ratio of the response amplitude of the flange of the stator to the amplitude of the elastic member is kept almost constant in all areas of contact portions between the two members.
摘要:
A master station and at least one slave station are connected by radio channels. Each slave station transmits data to the master station by time division multiple access. A first circuit equally divides a prescribed area into at least two sub-areas. The prescribed are is defined in a burst signal for transmitting data from each slave station to the master station, the prescribed area being provided for an arrangement of message signals which are sent from at least one terminal connected to the slave station. The first circuit also arranges a message signal in each sub-area. A second circuit generates a burst signal in which at least a control signal and a channel quality monitoring signal are arranged. The control signal and the channel quality monitoring signal are generated in the area peripheral to each sub-area in which a message signal is arranged. The prescribed area in the burst signal may be an area corresponding to a data quantity of 64 kbps in transmission speed. The data quantity of the message signal arranged in that area corresponds to data of 32 kbps, 16 kbps or 8 kbps in transmission speed.
摘要:
A vibration wave driven motor includes a vibration member which vibrates in response to an applied electrical signal, a rail-shaped stator having a recess formed thereon, a movable base integral with an elastic element, a pair of rollers, one of which engages the recess on the stator, and a pressing spring forcing the vibration member, the stator, and one of the rollers into contact.
摘要:
A planar auxiliary supporting member for supporting an elastic member for generating a vibration is arranged. The elastic member contacts a rail-shaped stationary member, and moves along the stationary member. The rigidity of the supporting member is set to be low, so that the elastic member as a stator stably moves along the stationary member.
摘要:
An electricity/air pressure converter comprising a pair of housings, made of a soft magnetic material, in the middle of which pole pieces are disposed facing each other with an air gap therebetween and which have a cylindrically formed outer circumferential portion; a permanent magnet secured to one of the housings at one end thereof and surrounding one of the pole pieces; a movable member, made of a magnetic material and having spring properties, which is secured to the other end of the permanent magnet and which faces the pole pieces in the air gap; a coil which is wound around the other housing so that it surrounds the pole pieces and through which a current signal flows; and a nozzle which is disposed to face the movable member around the center of either of the pole pieces and which is in communication with one end of a restrictor which is supplied with a supply air pressure at the other end thereof, wherein back pressure is generated at the nozzle according to current signals being outputted as an air pressure signal. Advantageously, the configuration of the invention is compact, and is easily manufactured at low cost, and is highly reliable and stable.
摘要:
A maleimide copolymer which consists essentially of greater than 28% by weight and less than or equal to 65% by weight of a maleimide monomer unit, greater than or equal to 16% by weight and less than 72% by weight of at least one monomer unit selected from the group consisting of aromatic vinyl compound monomer units and methacrylate monomer units, and 0-25% by weight of another vinyl compound monomer unit and which contains 0.1% by weight or less of the residual maleimide monomer and 0.5% by weight or less of volatile components other than the maleimide monomer and which has a ratio (Mw/Mn) of a weight average molecular weight Mw to a number average molecular weight Mn of 3 or less, a yellowness index of 30 or less and an intrinsic viscosity of from 0.3 to 1.5. The maleimide copolymer of the present invention is excellent in heat resistance, transparency, chemical resistance, impact resistance, moldability and the like.
摘要:
A vibration driven motor has a rail-like stator secured to a bottom plate and a vibration member for generating a travelling vibration wave in an elastic member to which an electro-mechanical energy conversion element is fixed due to an application of AC electric field to the electro-mechanical energy conversion element so as to bring a portion of the elastic member into press-contact with the rail-like stator. In the vibration driven motor a surface area of the bottom portion of the rail-like stator which comes in contact with the bottom plate is less than the a surface area of the top portion of the rail-like stator.
摘要:
In a vibration wave driven motor disclosed herein, the arcuate portions of the vibration member thereof are formed into a shape in which flexural rigidity differs between the inner side and the outer side thereof, or a shape in which the torsional rigidity of the straight portions of the vibration member is made higher than the torsional rigidity of the arcuate portions, whereby a torsion component produced in the straight portions is made small by the straight portions.