Abstract: To provide a disc changer capable of working without any malfunctions in spite of a reduced number of switches, it includes a mode-detecting mechanism having means for identifying an operation, cams respectively operated by powers supplied from a first and second motors, each cam provided with said identifying means, sensors for detecting said identifying means moving according to the operation of said cam, each composed of a set of a light-emitting element and a light-receiving element, a control section for receiving operation signals detected by said sensors to control the operation of the disc changer, and transmission gears for driving said cams, said transmission gears interlocking with a transporting gear meshing with a rack of said main tray for carrying the main tray out with the subtray put thereon.

Abstract: A tray carrying-in starting mechanism for a disk drive is simple and reduces a load at the start of carrying-in of the tray. The tray carrying-in action is started by pushing a tray that has been carried out to a disk exchange position. The starting mechanism comprises a projection provided on a rear end portion of a rack with a predetermined spacing from a tooth at a rear end of the rack. An untoothed portion is provided on an outer periphery of the gear that meshes with the rack, and a cam groove is formed on the outer periphery of the gear to allow the projection to slide over a predetermined extent and to engage therewith. The projection engages with the cam groove when the tray is carried out to the disk exchange position, and the tray can be retracted a predetermined distance without rotation of the gear when the tray is pushed.

Abstract: The invention provides a disk device used both horizontally and vertically, having a fall-proof mechanism of a disk medium provided at low cost, and capable of reducing noise caused by the fall-proof mechanism. The disk device comprises cuts 123 for forming tongued portions 122, engagement portions 124 formed to portions where the tongued portions 122 overlap when the tongued portions 122 are folded back toward a disk loading recess 121, and engagement receiving portions 125 formed on the tongued portions 122 to be engaged with the engagement portions 124, wherein disk stopper members constituting a fall-proof mechanism of the disk medium are formed by folding back the tongued portions 122 and engaging the engagement portions 124 with the engagement receiving portions 125.

Abstract: To achieve a disc device with a disc changer in which number of motors is reduced, and a quiet and stable switching operation, accurate positioning of a sub-tray, smooth clamp and release of a disc are possible, only a first motor for driving a main tray and a second motor for driving the sub-tray are used as driving sources, and a gear switching mechanism is provided, in which driving channels of the first and second motors can be disconnected.

Abstract: In order to provide to provide a disk drive equipped with a tray having a rear end central portion increased in strength without incurring increases in the dimensions of the disk drive, the tray is provided with ribs standing upright on the rear end portion of the tray and extending in a forward-and-rearward direction. Inclined surfaces are formed at the front and rear ends of the ribs so that the ribs push up a clamper when the ribs pass across a position of the clamper.

Abstract: In order that a tray in a disk exchanging position may not be brought out or damaged even when it is pulled, a disk recording/reproducing device includes a rack loader made slidable perpendicularly to the carrying direction of the tray, and a switch for turning ON/OFF in response to sliding action of the rack loader. The rack loader has a cam rod boss rising therefrom, and the tray is provided on its bottom face with a rack extending in its carrying direction and meshing with a pinion, and a generally L-shaped cam groove for fitting the cam rod boss loosely therein.

Abstract: In order to provide a tray carrying-in starting mechanism for a disk drive, which is simple and reduces a load at the start of carrying-in of a tray, and in which a tray carrying-in action is started by pushing a tray having been carried out to a disk exchange position, the starting mechanism comprises a projection provided on a rear end portion of the rack with a predetermined spacing from a tooth at a rear end of the rack, an untoothed portion provided on an outer periphery of the gear that meshes with the rack, and a cam groove formed on the outer periphery of the gear to allow the projection to slide over a predetermined extent and to engage therewith, the projection engages with the cam groove when the tray is carried out to the disk exchange position, and the tray can be retreated a predetermined distance without rotation of the gear when the tray is pushed.

Abstract: To provide a disc changer capable of working without any malfunctions in spite of a reduced number of switches, it includes a mode-detecting mechanism having means for identifying an operation, cams respectively operated by powers supplied from a first and second motors, each cam provided with said identifying means, sensors for detecting said identifying means moving according to the operation of said cam, each composed of a set of a light-emitting element and a light-receiving element, a control section for receiving operation signals detected by said sensors to control the operation of the disc changer, and transmission gears for driving said cams, said transmission gears interlocking with a transporting gear meshing with a rack of said main tray for carrying the main tray out with the subtray put thereon.

Abstract: To achieve a disc device with a disc changer in which number of motors is reduced, and a quiet and stable switching operation, accurate positioning of a sub-tray, smooth damp and release of a disc are possible, only a first motor for driving a main tray and a second motor for driving the sub-tray are used as driving sources, and a gear switching mechanism is provided, in which driving channels of the first and second motors can be disconnected.

Abstract: A system for blow-by gas return to the combustion chamber of an engine according to the present invention including an oil separator with an inlet communicating with an outlet through a diffusion chamber and a filter element; said oil separator communicating with the crankcase of the engine through a breather and an inlet pipe, and also communicates with the intake manifold of the engine through an outlet pipe, so as to separate the oil from the blow-by gas almost completely. The oil separator and the inlet and outlet pipes are disposed in a space directly over the cylinder head of the engine and the intake manifold, so as to prevent ice accumulation therein by the radiation and convection of engine heat thereon.

Abstract: The present invention relates to an intake system with double intake ports for internal combustion engine, involving two intake ports for each cylinder chamber of the engine, one of the two intake ports being a pure helical port which introduces suction air with helical flow, but without straightway flow, into the cylinder chamber, and another intake port being partially helical port which introduces suction air with helical flow and straightway flow into the cylinder chamber, the outlets of the two intake ports being preferably located in nearer side of the center of the cylinder chamber, and side by side in a parallel direction with the axis of cam shaft; and preferably the pure helical intake port being suspended in lower speed range by pausing device having pause valve which is preferably consisted of suction valve; and the length of suction passage being preferably varied in accordance with the variation of speed ranges.

Abstract: An apparatus for the return of crankcase vapors into a combustion chamber of an internal combustion engine, and for separating lubricating oil mist in the crankcase vapors. Some of the lubricating oil mist being removed primarily with a breather device and the residual oil mist being separated secondarily with an oil-bath type air cleaner, by directing the vapors into the air cleaner through a vapor passage.

Abstract: A balancing device comprising three or more rotating balancers mounted within a housing is detachably mounted on a reciprocating, internal combustion engine. The balancing device generates a balancing force F.sub.b chosen to cancel the vibrating force F.sub.r produced by the engine. The vibrating force F.sub.r lies on a vibration line S, and the balancing force F.sub.b is spaced a distance l therefrom, whereby a rotating moment M is generated. The balancing device also generates a balancing moment -M, chosen to cancel the rotating moment M.