摘要:
Disclosed is a constantly-meshing-type multi-stage transmission which can be operated with small forces, does not need a clutch for gear shift, has no loss of changeover time at the time of gear shift, and in which a loss of the driving force is prevented. Driven gears n1, n2, . . . n5 are supported on a hollow driven gear shaft 12 in a manner engageable with and disengageable from a hollow driven gear shaft 12 via swing pawl members 24, 25. The transmission has first engaging means 25 for engaging the gear shaft 12 with a first driven gear n1, so as to effect synchronous rotation thereof; and second engaging means 25 for engaging the gear shaft 12 with a second gear n2, one step lower in reduction gear ratio than the first gear n1, so as to effect synchronous rotation thereof. When making an upshift by changing over the engaging means 25 from the engagement with the first gear n1 to the engagement with the second gear n2, the gear shift is made by engaging the second gear n2 with the gear shaft 12 through the second engaging means 25 while the first gear n1 is being in engagement with the gear shaft 12 through the first engaging means 25.
摘要:
A plastic cap comprising a top panel and a skirt hanging down from the peripheral edge of the top panel, the inner surface of the top panel forming an inner ring that forms a seal upon coming into intimate contact with the inner surface of the wall of the mouth of a container, and the inner surface of skirt forming a screw thread that comes into engagement with a screw thread formed on the outer surface of the wall of the mouth of the container, wherein a slender recessed portion is formed in a number of at least one in the inner surface of said inner ring extending upward from an end thereof. The cap features both excellent sealing and excellent venting.
摘要:
A TV observation system for an endoscope including an endoscope and a small-sized light source unit. The endoscope can be structurally separated into an insertion part and a proximal holding part continuously extending from the insertion part. The endoscope can include a light guide arranged from a distal end of the insertion part through the proximal holding part. The proximal holding part can be provided with a light guide joint section where an entrance end face of the light guide is fixed. The small-sized light source unit can be constructed and arranged to be removably connected with the light guide joint section. The small-sized light source unit can include a plurality of small-sized LEDs, a batter configured to power the plurality of LEDs, and a compounding optical system configured to compound light emitted by the plurality of small-sized LEDs.
摘要:
A variable transmittance optical element is provided in an imaging optical system of an endoscope, and includes small etalons or multiple microscopic mirror that have an effective part that allows passage of a light beam received at a unit light receiving area that corresponds to an individual pixel, or a plurality of pixels, of an image pickup device that is provided in the imaging optical system of the endoscope. Each of said small etalons or microscopic mirrors have facing surfaces that are arranged so as to be parallel to one another on a transparent substrate; and the transparent substrate and an image pickup surface of the image pickup device are positioned so that each of the small etalons or microscopic mirrors allows passage of the light beam.
摘要:
An illumination device comprises: a plurality of laser light sources arranged so as to be identical in a direction of light emission; an optical element for converting laser light emitted from the laser light sources into parallel light at least in one direction; and a fly-eye lens into which the laser light converted into parallel light is entered. Placement of the laser light sources is adjusted in such a manner that incident regions of the laser light on the fly-eye lens are mutually shifted in a row or column direction of lens cells disposed in the fly-eye lens.
摘要:
A package comprising a metallic container having a mouth portion and a metallic cap with a liner fitted to the mouth portion, wherein the liner 17 of the cap includes an outer ring 20 hanging down from an outer circumferential end thereof and an inner ring 21 hanging down on the inside of the outer ring 20; the inner surface of the outer ring 20 extends straight in the vertical direction; and a corner portion from the top panel to the skirt is draw-formed while pushing the cap from the upper direction in a state where the open end of the container mouth portion is inserted, so that the inner surface of the outer ring is brought into close contact with the outer surface of the side wall portion formed at the open end of the container mouth portion, an inner protruded portion is formed at the lower end of the inner surface of the outer ring so as to protrude inward, and the inner protruded portion is brought into close contact with the outer side portion of the lower curled portion of the container mouth portion. The package effectively prevents the breakage of the sealing before the breakage of the bridge that connects the TE band, and can be favorably resealed.
摘要:
An optical device includes a main body having a light incident surface, a light emitting surface provided facing the light incident surface, and a light-reflecting side surface provided from a periphery of the light incident surface to a periphery of the light emitting surface. In the optical device, the light incident surface, the light emitting surface and the light-reflecting side surface are mirror-finished, and a supporting portion configured to support the main body is provided on the light-reflecting side surface.
摘要:
A gear-shifting apparatus is provided which easily returns a derailed chain to engagement with a tension and/or guide pulley when the chain comes off the respective pulley due to a gear-shifting operation, and enables a gear-shifting operation to be performed when a gear-shifting is halted or is rotating backward. A derailer includes an arm which supports a tension pulley and a pulley support member which supports a guide pulley. The arm is provided with engagement recovery-guiding parts for causing respectively derailed parts of a chain, which are derailed from the orbital plane of the tension pulley, to engage with the tension pulley. The pulley support member is provided with a first extending part and a second extending part for the purpose of causing derailed parts of a chain, which has been derailed from the orbital plane of the guide pulley, to engage with the guide pulley.
摘要:
A capsule endoscope is disclosed having an illumination means, an imaging system that includes an objective optical system, and a transparent cover. The invention is characterized by one of: (1) the transparent cover has a larger radius of curvature in a central region of the field of view of the objective optical system than the radius of curvature of the transparent cover in a peripheral region of the field of view of the objective optical system, or (2) the imaging system has a different near point of focus distance for a central region of the field of view than the near point of focus distance of a region that is peripheral to the central region of the field of view and the objective optical system includes a meniscus lens element of positive refractive power and a plano-convex lens element.
摘要:
The present invention provides a chain alignment mechanism of a transmission for a bicycle which includes a drive sprocket wheel which is rotatably driven by a crankshaft, a driven sprocket wheel which is drivably connected with an output shaft which is rotated in an interlocking manner with a drive wheel of the bicycle, and an endless chain which is wound around the above-mentioned drive sprocket wheel and the above-mentioned driven sprocket wheel, wherein even when the chain of the transmission for the bicycle is deflected or slackened due to a driving manipulation of the bicycle, the vertical vibration of the bicycle or the like, the chain is reeled in the drive sprocket wheel in a row in an aligning manner. A chain guide member is arranged on an endless-chain-reel-in side of the above-mentioned drive sprocket wheel.