Abstract: In a tape cassette having sensor optical path holes provided on respective wall portions on a straight line coupling a position of a light emission element with a position of a light reception element so that light from the light emission element is introduced into a tape container and light passing through a tape running path of the tape container comes out of the tape container and reaches a light reception element, a light shielding member having a light shielding effect is bonded around a sensor optical path hole right after the light from the light emission element comes out of the tape container.

Abstract: A DC/DC converter and a series regulator are connected in parallel between an input terminal and an output terminal. At the time of a heavy load, the DC/DC converter is operated. Although the DC/DC converter has a large current consumption of its own, it has a high power conversion efficiency. Accordingly, since a load current increases at the time of a heavy load, it is effective to use the DC/DC converter whose power conversion efficiency is high, and its current consumption can be neglected since the load current is large. On the other hand, at the time of a light load, the series regulator is operated. Although the series regulator has a small current consumption of its own, it has a low power conversion efficiency. Accordingly, at the time of a light load, even when the series regulator is used, its low power conversion efficiency can be neglected because its current consumption is small.

Abstract: A DC/DC converter and a series regulator are connected in parallel between an input terminal and an output terminal. At the time of a heavy load, the DC/DC converter is operated. Although the DC/DC converter has a large current consumption of its own, it has a high power conversion efficiency. Accordingly, since a load current increases at the time of a heavy load, it is effective to use the DC/DC converter whose power conversion efficiency is high, and its current consumption can be neglected since the load current is large. On the other hand, at the time of a light load, the series regulator is operated. Although the series regulator has a small current consumption of its own, it has a low power conversion efficiency. Accordingly, at the time of a light load, even when the series regulator is used, its low power conversion efficiency can be neglected because its current consumption is small.

Abstract: A first charge pump circuit and a second charge pump circuit are complementarily driven by a first driving circuit and a second driving circuit, and step up a DC input voltage by two times. Also, the first driving circuit stops its operation based on a light load judging signal, an input voltage judging signal or an output voltage judging signal, which is input in a control input terminal. For example, when the load is light, there is a margin for the load, and the light load judging signal becomes to be an “L” level. As a result, the first driving circuit stops outputting drive signals, such that the first charge pump circuit stops its operation.

Abstract: The invention provides a mobile crushing apparatus which is compact and light, has an improved assembling property and maintaining property, and has an improved operability for changing to a traveling attitude. Accordingly, in the apparatus provided with a crusher (10) crushing rocks or the like and a supply conveyor (41) for supplying a material to be crushed, which are mounted on a frame (2), the supply conveyor is provided in one side in a width direction of the frame, and an input shaft (16) for inputting a driving power to the crusher is provided in another side in the width direction of the frame. A power source (30) for the crusher and the supply conveyor is arranged in a stand (5) so as to constitute a power unit (4) and mounted to the frame via the stand.

Abstract: A tape cassette for a tape recording and reproducing apparatus having a cassette holder with an erroneous insertion preventing member. The cassette has a rectangular case having front and rear portions longer than a side portion, and has a loading pocket extending along the front portion, a magnetic tape wound on a pair of reels and extended along the loading pocket, a front lid provided at the front portion to cover the tape, an erroneous insertion preventing slot communicated to the loading pocket at a bottom of the case. The slot is extended to along a normal insertion of the cassette, with the front lid being forward, into the holder engaging with the erroneous insertion preventing member. An escaping slot is provided on the bottom of the case nearby the rear portion leaving a slight space therefrom.

Abstract: The present invention discloses a tape cassette having a front lid for protecting a magnetic face of a magnetic tape accommodated in a casing made of upper and lower half members against dust or the like, and a connecting plate and a rear lid suspended from the connecting plate for protecting an upper portion and a lower portion of the rear face of the magnetic tape respectively. The front lid is rotatably supported at sides of the casing. The rear lid is rotatably suspended on the connecting plate which is rotatably supported on the front lid. The magnetic tape is protected between the front lid and the rear lids together with the connecting plate in a lid closed state. A pair of pins provided on the rear lid are snugly fitted in a pair of guide grooves formed in protruding portions provided in the lower half member so that the rear lid may move in opening and closing directions.

Abstract: A bending device for use in an endoscope, a catheter or the like includes a bendable frame having a generally cylindrical shape as a whole, a tip member having a rear end portion whose outer peripheral surface is cylindrical, and a connecting tube interconnecting the frame and the tip member. A slit is formed through a front end portion of the connecting tube and extends axially of the connecting tube. A rear end of the slit is disposed rearwardly of a rear end of the tip member. An operating wire is passed axially through the frame and the connecting tube, and a front end portion of the operating wire is received in a receiving recess, defined by the slit of the connecting tube and the outer peripheral surface of the rear end portion of the tip member, and is fixedly secured to the connecting tube.

Abstract: An aspirator for an endoscopic system has a suction nozzle for aspirating obstacles and disposed at an end of an endoscope, a suction pump, a suction flask for receiving the aspirated obstacles, and a suction conduit for connecting the suction nozzle to the suction pump via the suction flask. The aspirator further comprises an electromagnetic valve disposed in the suction conduit, and an electromagnetic valve controller. The electromagnetic controller controls the electromagnetic valve such that the suction conduit is closed when an aspiration command signal is not supplied from an aspirator button during the operation of the suction pump, and such that the suction conduit is alternately opened and closed when the aspiration command signal is supplied from the aspirator button during the operation of the suction pump.

Abstract: An apparatus for transmitting liquid and gas in an endoscope comprising conduits for transmitting liquid and gas to an observation optical system to clean the observation optical system; and an automatic change-over device for sequentially operating both modes of the liquid and gas transmissions by turning on and off only a liquid transmitting switch disposed in an operating portion. The automatic change-over device comprises a first electromagnetic valve disposed in the liquid transmitting conduit, a second electromagnetic valve disposed in the gas transmitting conduit, a circuit for connecting the first and second electromagnetic valves to the liquid transmitting switch of the operating portion, and a control section for controlling the operations of the electromagnetic valves.

Abstract: An angle portion of an endoscope comprising a flexible tube having a polydirectional distal tip. A series of four-directional rings are arranged to form the rear part of the angle portion, a series of two-directional rings are subsequently arranged to form the front part of the angle portion, and the distal tip is connected to the top end of the front part of the angle portion.

Abstract: A constant pressure apparatus of an endoscope includes a gas supplying conduit for cleaning an optical observation system, a sucking conduit for constantly holding the inner pressure of a body, and an insertion port for inserting a device for medical treatment into the body. The constant pressure apparatus comprises a pressure detector disposed in a portion of the gas supplying conduit and detecting the pressure in the gas supplying conduit. The pressure detector is electrically connected to a control device for controlling the inner pressure of the body. A gas supplying device for adjusting the inner pressure of the body is disposed in the insertion port and may comprise a fiber for transmitting laser into which a cooling conduit for receiving carbon dioxide is inserted. Electromagnetic valves are disposed in the gas supplying conduit, the sucking conduit and the gas supplying means, respectively, and are operated by signals from the control device.

Abstract: An endoscope comprising an operating body and an inserting portion extending therefrom. The inserting portion is provide with a bendable section which is composed of a plurality of tubular members arranged in facing relation to each other along an axis of the inserting portion. Each pair of adjacent tubular member are pivotally connected to each other. At least one pair of manipulating wires extend through the inserting portion to pivotally move each pair of adjacent tubular members relatively to each other, in order to curve the bendable section. A pair of wire guide members are fixedly received respectively in a pair of recesses formed in an inner peripheral surface of each tubular member. The manipulating wires extend respectively through the wire guide members on each tubular member.

Abstract: A helical scan type magnetic recording and/or reproducing apparatus comprises a rotary erase head mounted on a rotary drum at such a position that in a normal recording mode the rotary erase head does not erase a portion of a track formed on a magnetic tape by a rotary recording and/or reproducing head which leads the rotary erase head and in a long-time recording mode the rotary erase head erases an overlapping portion of two mutually adjacent tracks formed by a pair of rotary recording and/or reproducing heads respectively leading and lagging the rotary erase head.

Abstract: A helical scan type of recording apparatus includes means for controlling the supply of recording current to one or more rotary recording heads and erase current to one or more erase heads whose width is selected to produce erasure of each tape signal track twice in succession, the control being executed such that when recording is to be ended, the erase current supply is first terminated and thereafter the recording supply current is terminated after a specific time interval has elapsed, thereby eliminating from the end of each recorded portions the occurrence of a short tape segment which has been erased and not thereafter recorded on. Disturbances during playback, e.g. of a displayed video signal, are thereby eliminated.

Abstract: A connector device is disclosed for detachably connecting a photographing apparatus to an endoscope eyepiece barrel. A pair of clamping links have their respective one ends pivotally mounted on an attaching ring adapted to be secured to the photographing apparatus, and are movable between an open position where the links are out of a space in the attaching ring for receiving an eyepiece barrel end flange and a closed position where the links extend into the space. The links are biased toward each other by a resilient element. A pair of support links have their respective one ends pivotally connected to each other and the respective other ends pivotally connected to the respective other ends of the clamping links, respectively.

Abstract: A tape cassette is used with a recording and/or reproducing apparatus which has an optical tape end detector which is constituted by a light emitting element and light receiving elements. The tape cassette comprises an opaque cassette case having a transparent window, and a lid located at the front of the cassette case. The cassette case accommodates therein a supply reel, a take-up reel, and a magnetic tape. The transparent window enables visual detection of a wound state of the magnetic tape with respect to the reels. The magnetic tape has transparent tapes connected at ends thereof, and forms a predetermined tape path along the front of the cassette case. The transparent tapes are optically detected by the optical tape end detector when the transparent tapes are drawn out from the reels. The lid is capable of assuming an open state and a closed state, and covers the magnetic tape in the predetermined tape path in its closed state.

Abstract: An automatic tape loading type recording and/or reproducing apparatus comprises a guide drum having one or a plurality of recording and/or reproducing heads for recording and/or reproducing a signal on and/or from a tape, first and second loading members which relatively enter within a tape cassette which is loaded into the apparatus, a first loading mechanism for moving the first loading member over a short distance so as to draw the tape out of the loaded tape cassette and wrap the tape around a peripheral surface of the guide drum, a second loading mechanism comprising a rotatable loading ring mechanism which is disposed to encircle the guide drum, for moving the second loading member along the peripheral surface of the guide drum in a direction opposite to the moving direction of the first loading member so as to draw the tape out of the loaded tape cassette and wrap the tape around the peripheral surface of the guide drum, and a control mechanism for controlling an operating timing of the first loading m

Abstract: A tape loading device in a recording and/or reproducing apparatus which has a guide drum with heads for recording and/or reproducing signals onto a tape. A first belt is arranged along a first belt path which has a section extending between the guide drum and a cassette accommodating the tape. A second belt is arranged along a second belt path which has a section extending between the guide drum and the cassette. A driving mechanism drives the first and second belts so that each travels toward the guide drum during a tape loading mode and travels toward the cassette during a tape unloading mode. A pair of tape guide mechanisms are movable in response to the travel of the first and second belts for intercepting the tape within the cassette and for moving to predetermined positions in the vicinity of the guide drum during the tape loading mode to guide the tape at the predetermined positions. The tape travels along a predetermined tape path with respect to the guide drum.

Abstract: A tape cassette comprises a cassette case made up from an upper half and a lower half which are connected together, a tape accommodated within the cassette case, a lid located at the front of the cassette case for covering the tape when the tape cassette is not in use, and a lock mechanism for locking the lid in its closed position when the tape cassette is not in use.