摘要:
Platy potassium titanate having a mean major diameter of 1-100 &mgr;m and a mean aspect ratio of 3-500 and obtainable by subjecting magnesium or lithium potassium titanate to an acid treatment to thereby prepare platy titanate, immersing the platy titanate in a potassium hydroxide solution and then subjecting it to calcination.
摘要:
Lepidocrocite potassium magnesium titanate having a composition represented by the formula K0.2-0.7Mg0.4Ti1.6O3.7-4 and obtainable by subjecting an aqueous slurry of lepidocrocite potassium magnesium titanate having a composition represented by the formula K0.8Mg0.4Ti1.6O4 to an acid treatment and subsequent calcination.
摘要:
A connection method connects an optical connector and an optical transmission element. The optical connector includes a connector housing, a stop-ring structure, and an optical fiber which protrudes from an end part of the stop-ring structure. The optical transmission element includes a tensile-strength fiber body. The connection method includes fuse-connecting a first end of the optical fiber with a second end of an optical fiber protruding from a transmission element terminal part of the optical transmission element; inserting a fuse-connected optical fiber part and the tensile strength fiber body inside a reinforcing sleeve provided with a hot melt body, and covering and bridging the transmission element terminal part and at least the end part of the stop-ring structure; and integrating the fuse-connected optical fiber part, the tensile strength fiber body, the transmission element terminal part, and the stop-ring structure, by a hot melt resin melted from the hot melt body.
摘要:
A digital camera comprises an imaging/focus detection element, in which focus detection pixel rows are incorporated in a two-dimensional array of a plurality of imaging pixels, that outputs image signals and focus detection signals, a focus detection unit that detects a state of focal adjustment at a photographic optical system based upon the focus detection signal, an image blur detection unit that detects an image blur quantity, a reliability judgment unit that judges, based upon the blur quantity, whether or not the state of focal adjustment detected in correspondence to a focus detection pixel row disposed along a direction different from a rolling shutter scanning direction among the focus detection pixel rows is reliable, and a focal adjustment unit that executes focal adjustment for the photographic optical system based upon the state of focal adjustment judged to be reliable by the reliability judgment unit.
摘要:
A linear bearing structure comprises a bearing bush, a plurality of annular ball retainers each holding a plurality of bearing balls, circumferentially and a pair of annular endpieces respectively removably secured to ends of the bush to confine the ball retainers therein. The bearing bush comprises an outer metal cylinder and an inner cylindrical lining layer formed by a bearing material having a small coefficient of friction and a small coefficient of wear and is provided with a slit which has a predetermined width and extends along the axis of the bush over the entire length thereof so that the bush can be circumferentially elastically compressed by a magnitude corresponding to the width of the slit. Each of the endpieces has, at the inner side thereof, an annular groove having a diameter smaller than that of the bush so that by compressing the bush into the annular grooves of the endpieces at the ends of the bush, the bush and the endpieces can be elastically fitted together.
摘要:
An automatically tiltable small roller structure, which comprises a shaft, a small roller including an elastic rubber cylinder and a sleeve, and a plurality of bearing balls. The sleeve is integral with the inner periphery of the elastic rubber cylinder, and mainly composed of polytetrafluoroethylene (fluoroplastics). The shaft is fitted in the roller structure. The bearing balls are fitted in a circumferential or annular groove formed on the shaft, and are provided such that they are in rolling contact with the inner periphery of the roller and the outer periphery of the shaft in the groove. The groove is provided at a middle point between the opposite ends of the roller. The depth of the groove is set such that the bearing balls project slightly from the groove, so that a slight gap is formed between the inner periphery of the roller and the outer periphery of the shaft. The axes of the roller and shaft are thus slightly tiltable in relation to each other.
摘要:
A rotary cam assembly includes a support shaft provided on a fixed bracket, a cam follower supported on the bracket so as to be slidably displaceable, a plate cam the outer circumferential portion of which has a cam surface contacted by the cam follower, the plate cam being freely rotatably mounted on the support shaft at a center hole, a cylindrical member extending along the central axis of the support shaft and having one end connected to the plate cam via coupling means formed in the center hole of the plate cam, and an input member connected to the other end of the cylindrical member for rotating the plate cam.
摘要:
A throttle valve assembly for displacing the plungers of at least two contiguous throttle valves in correspondence with the degree of throttle opening of an engine includes a first cam rotatably mounted on a stationary bracket fixed to the throttle valve bodies and having a cam face for displacing the plunger of the first throttle valve and an axially extending boss, a second cam rotatably mounted on the bracket and having a cam face for displacing the plunger of the second throttle valve and an axially extending boss, the first and second cams being coupled via coupling means formed on the opposing bosses, and a cable operatively associated with the engine torque demand for rotating the cams. The cam faces of the cams are formed to have a shape capable of providing the desired throttle pressure characteristic, the shapes of the cam faces differing from each other in order to obtain the optimum speed-change performance.
摘要:
A process for preparing o-methallyloxyphenol by reacting catechol with methallyl chloride in the presence of at least one of KI and NaI serving as a catalyst with use of a base, and an organic solvent or a mixture of an organic solvent and water, the process being characterized in that methallyl chloride is reacted with the catalyst after the reaction to recover the catalyst as converted to methallyl iodide and reuse the catalyst.
摘要:
In a hydromechanical transmission, low and high speed drive power trains are selectively completed in response to variation of the speed ratio between an input shaft and an output shaft. The transmission comprises a speed ratio detecting valve for detecting lower and higher limits of a predetermined speed ratio and a clutch control valve for conducting the switchover between the low and high speed drive power trains with a predetermined time lag after the actual speed ratio reaches a range defined by the lower and higher limits of the predetermined speed ratio.