摘要:
A vibration-damping device including: an elastic body connecting a first and a second mounting member: a pressure receiving and equilibrium chambers partially defined by the elastic body and a flexible diaphragm, filled with a non-compressible fluid and held in fluid communication through a first orifice passage and a second orifice passage that is tuned higher than the first orifice passage. A shut-off valve mechanism operable to selectively allow and inhibit fluid flows through the second orifice passage, an elastic oscillation plate partially defining the pressure-receiving chamber so that a fluid pressure in the pressure-receiving chamber acts on one surface of the elastic oscillation plate, and a working air chamber partially defined by the other surface of the elastic oscillation plate and oscillated by a periodic air pressure change in the working air chamber, are also incorporated. A method of controlling the same is also disclosed.
摘要:
A dynamic damper includes a cylindrical mass metal element, a cylindrical elastic-body attachment portion, a cylindrical elastic-body connection portion, and an elastic-body covering portion. The elastic-body attachment portion is formed from a rubber elastic body and coaxially disposed inside the mass metal element while a predetermined radial distance is maintained therebetween. The elastic-body connection portion is formed from a rubber elastic body and disposed between the mass metal element and the elastic-body attachment portion so as to connect them. The elastic-body covering portion covers the outer circumferential surface of the mass metal element. The elastic-body connection portion and the elastic-body covering portion are not bonded to the mass metal element. A plurality of protrusions are formed and arranged circumferentially on the inner circumferential surface of the mass metal element.
摘要:
A pneumatically controlled vibration damper that includes: an elastic connector disposed between and secured to a mounting member and a mass member for elastically connecting the mass member to the mounting member, and partially defining a working air chamber closed from an external area; an air passage connected to the working air chamber for regulating an air pressure in the working air chamber from the external area; and a static pressure-regulating system operable for substantially statically regulating the air pressure in the working air chamber via the air passage, so as to induce a substantially static elastic deformation of the elastic connector for changing a spring characteristic of the elastic connector.
摘要:
A pedal displacement control structure for a vehicle comprising: a pedal bracket fixed to a first member of a vehicle body which is displaced to rearward of the vehicle when an external force larger than a predetermined value is exerted to the front portion of the vehicle; a suspension-type vehicle pedal having a rotation shaft which becomes a center of pivot is supported by the pedal bracket; a displacement control device for controlling the displacement of a tread of the vehicle pedal by putting a pushing force frontward of the vehicle around the rotation shaft on the vehicle pedal when the vehicle pedal is displaced to rearward of the vehicle with the displacement of the first member of the vehicle body to rearward of the vehicle, which is provided in a second member on the vehicle body having high intensity and arranged more rearward of the vehicle than the vehicle pedal; and a device for inhibiting the push-reaction force larger than a predetermined value from being transmitted to the second member on the vehicle body via the displacement control device, when the pushing force is put on the vehicle pedal from the displacement control device. Hence, the displacement of the tread of the vehicle pedal is controlled.
摘要:
A rotary valve is interposed between an intake pump and an exhaust pump for supplying an air, and at least one suction head or one nozzle that performs a predetermined operation upon reception of the air supplied from the intake and exhaust pumps, to supply/stop supplying the air. This rotary valve includes a valve body, a main body, a notch, and a hollow portion. The valve body is rotatably driven in a cylinder. The main body rotatably supports the valve body. The notch is formed in a circumferential surface of the valve body and is connected to the intake pump. The hollow portion is formed in the valve body in an axial direction and is connected to the exhaust pump.
摘要:
A fine particulate polishing agent comprises fine particles of a solid solution composed of single-crystal ceric oxide and silicon dioxide and fine particles of silicon dioxide. A slurry polishing agent comprising the fine particulate polishing agent can be prepared by a method which comprises the steps of mixing, with stirring, single-crystal ceric oxide fine particles, silica sol and a liquid; drying the mixture; subjecting the dried particulate material to a thermal treatment at a high temperature and then cooling the solid solution powder formed by the thermal treatment and composed of single crystal ceric oxide and silicon dioxide; again mixing the powder with silica sol and a liquid; and then subjecting the mixture to deagglomeration using a wet pulverizing mill to give a slurry.
摘要:
An electromagnetic pressure regulating valve includes a hollow core, a coil surrounding the core and a plunger for applying a load to a valve member through a shaft fitted in the hollow of the core, so that the pressure regulating valve is actuated when an electric signal is fed to the coil. A bushing is mounted in the hollow portion of the core for supporting the shaft for sliding relative to the core and is made of a resin material on at least its sliding face contacting the shaft. An oil passage is provided in the valve for circulating a lubricant to lubricate the areas of sliding contact between the bushing and the shaft.
摘要:
A fine particulate polishing agent is based on cerium oxide and silicon oxide; a slurry polishing agent comprises the foregoing fine particulate polishing agent which can be prepared by a method which comprises the steps of mixing, with stirring, cerium oxide fine particles, silica sol and a liquid; drying the mixture; mixing the material with a liquid; and then subjecting the mixture to deagglomeration using a wet pulverizing mill to give a slurry. Preferably, the dried particulate material is subjected to a thermal treatment at a high temperature of 150.degree. to 1200.degree. C., preferably 800.degree. to 900.degree. C., thereby to produce a solid solution of cerium oxide and silicon oxide. The slurry polishing agent can ensure the achievement of surface roughness comparable to or superior to that achieved by the colloidal silica polishing agents and a high polishing rate at least comparable to that achieved by the conventional cerium oxide polishing agents.
摘要:
A preset state display apparatus includes a position detector, a memory, and a display. The position detector detects a set state of an adjustment portion adjusted in a change in printed matter or the like in a printing press. The memory stores a current set state of the adjustment portion which is detected by the position detector in correspondence with a key number represented by a storage command generated upon designation of the key number. The display calls, as a preset state, the set state of the adjustment portion which is stored in correspondence with the designated key number, in accordance with a call command generated upon designation of the key number, to display the preset state near an operation member corresponding to the adjustment portion.
摘要:
An apparatus information obtaining apparatus for obtaining apparatus information including model information of an image output apparatus from the image output apparatus via a network is disclosed. The apparatus information obtaining apparatus includes: an image output apparatus list database storing a list of image output apparatuses from which the apparatus information is obtained; an apparatus information send instruction sending unit for instructing the image output apparatus included in the image output apparatus list to send the apparatus information; and an apparatus information receiving unit for receiving the apparatus information from the image output apparatus that is instructed to send the apparatus information.