Abstract: In an outboard motor S, a first drive shaft 31 and a second drive shaft 32 are interlocked by an intermediate gear mechanism 33 including a drive gear 34 mounted on the first drive shaft 31 and a driven gear 35 mounted on the second drive shaft 32. The second drive shaft 32 is supported in an upper bearing 38 and a lower bearing 39 disposed on the upper and the lower side of the driven gear 35. The upper bearing 38 supports an upper end part 32a of the second drive shaft 32 extending upward from the driven gear 35 and the upper bearing 38 is at a vertical position coinciding with that of the drive gear 34. The lower bearing 39 is placed at a position on a lower end part 32b of the second drive shaft 32. The lower end part 32b extends between the driven gear 35 and an input gear 51 included in the output gear mechanism 50.

Abstract: A drive unit comprising a transmission with two coaxial bevel gears (11, 12) fitted opposite one another on the same engine shaft (10), which engage a bevel gear (13) fitted to a shaft (14) perpendicular to the preceding one, a device designed to mesh the engine shaft with one or other of the bevel gears, constituted by clutches (20, 21) housed in the body of the bevel gears (12, 11) and controlled by a pressurised fluid, wherein pipes (24, 25), designed to convey the pressurised fluid, are formed in the engine shaft (10), wherein, in order to supply pressurised oil to the pipes (24, 25), an axial inlet pipe (34) is formed in the head of the engine shaft (10), which the axial pipe (34) feeds a distributor (35) constituted by a valve that slides on the engine shaft, which the slide valve (35) can move between two positions in which it places the input pipe (34) in communication with one of the pipes (24, 25).

Abstract: A transmission for a dune buggy has a transaxle, a transmission gear assembly, a forward bevel gear, a reverse bevel gear, a counterrotation bevel gear, a sleeve and a gear shifting lever assembly. The transmission gear assembly is mounted around the transaxle and is rotated by a motor in the dune buggy. The forward and reverse bevel gears are mounted rotatably around the transaxle. The forward bevel gear connects to the transmission gear assembly. The counterrotation bevel gear meshes with the forward and reverse bevel gears. The sleeve is mounted securely on the transaxle, slides longitudinally on the transaxle and selectively engages the forward or reverse bevel gears. The gear shifting lever assembly connects to the sleeve. Moving the gear shifting lever moves the sleeve.

Abstract: A drilling/tapping/unscrewing apparatus including a transmission shaft of a power source on which a drilling ratio gear, a tapping ratio gear and an unscrewing ratio gear are mounted for transmitting the power of the power source to a bit. The apparatus further includes an adjustment unit for controlling the switching between the drilling, tapping and unscrewing operations of the apparatus. The adjustment mechanism includes a bit shaft on which a drilling gear, a tapping gear and an unscrewing gear are fitted. The tapping gear and the unscrewing gear are respectively engaged with the tapping ratio gear and the unscrewing ratio gear. The drilling gear and the tapping gear are controlled by an adjustment button to synchronously move up and down on the bit shaft, whereby the drilling gear can be engaged with or disengaged from the drilling ratio gear.

Abstract: A drive unit for boats includes a transmission with two coaxial bevel gears, mounted opposite one another on the same engine shaft, which engage a bevel gear fitted to a shaft orthogonal to the preceding shaft, and elements to mesh the engine shaft with one of the bevel gears. The elements are constituted by clutches, each housed in a closed seating inside the body of the bevel gears. The engine shaft is mounted on a pair (or more) of bearings which are mounted on the housing of the device, and the opposite bevel gears are each fitted on one side to a bearing mounted on the housing and on the opposite side to at least one bearing, which in turn is mounted on a central support integral with the casing, so as to discharge the reaction forces onto the structure of the housing, and not onto the other rotating parts.

Abstract: A drive unit for boats is described, comprising a transmission with two coaxial bevel gears (6, 7), mounted opposite one another on the same engine shaft (2), which engage a bevel gear (8) fitted to a shaft (3) orthogonal to the preceding shaft (2), and means designed to mesh said engine shaft with one or other of said bevel gears (6, 7), in which said means designed to mesh said bevel gears with said engine shaft are constituted by clutches (11), each housed in a closed seating inside the body of said bevel gears (6, 7).

Abstract: A gear structure for a figurine. The structure includes coaxial gears provided on a shaft, each of the coaxial gears is provided with toothed portions at a periphery thereof at suitable positions, with a smooth portion between adjacent toothed portions. At suitable positions facing the periphery of each of the coaxial gears, action gear sets are respectively provided to drive at least one joint on a figurine to move such that by rotating the shaft to different angular positions, at least one of the toothed portions on at least one of the coaxial gears engages the corresponding action gear set so as to actuate the action gear set, thereby enabling the figurine to perform at least one action.

Abstract: A transmission assembly for a beach vehicle includes a driving member which has pawls extending therefrom and a shaft extends through the driving member. A ring has recesses defined in an outer periphery thereof and a plurality of teeth are defined in an inner periphery of the ring. The pawls engaged with the recesses in the ring and a planet gear assembly is engaged with the teeth in the ring. A control member is movably mounted to the shaft and has protrusions extending from two sides of the control member. The protrusions are movably and alternatively engaged with concavities defined in a side of the driving member and the planet gear assembly so as to function the beach vehicle forward or backward.

Abstract: Reversing gear for boats, comprising a displaceable engaging sleeve (10) with a V-shaped groove (22), into which there extends a gear selector in the form of a dog (21) on a pin (29) movable in the axial direction of the engaging sleeve. The pin is excentrically mounted in a rotatable sleeve (31). A ball-and-socket joint (27,28) between the dog and the pin assures that the dog will retain its orientation and contact surface in the groove during the shifting movement.

Abstract: An improved transmission system for a document feeder, in which a constant one-way-rotating gear train is mounted in an output zone so as to cause a transmission shaft in the output zone to rotate in one direction only to send out a sheet of document no matter the driving gear rotates clockwise or counter-clockwise; therefore, as soon as a first sheet of document moves out of the scanning line without moving out of the output zone, the driving gear will change its rotation clockwise so as to have a next sheet of document fed into the scanning zone; therefore, the feeding distance between two sheets of document will be reduced, and consequently the whole feeding time for a document will be reduced, too.

Abstract: Disclosed herein is a shaft assembly including a vertically extending axis and comprising a lower shaft having an upper end portion including an upper end, and an axial bore extending downwardly from the upper end, an upper shaft including a lower end portion received in the axial bore and including a lower end and an outer surface extending axially from the lower end, means on the outer end portions of the upper and lower shafts for preventing rotary movement therebetween, and means for selectively permitting assembly and disassembly of the upper and lower shafts and for preventing disassembly of the upper and lower shafts comprising an annular groove in the axial bore in the lower shaft, an inclined bore located in the end portion of the upper shaft, extending upwardly at an acute angle to the axis, and having an opening located wholly in the outer surface, and a ball movable in the inclined bore and in the annular groove between a locked position wherein, when the axis is vertical, the ball is partially lo

Abstract: A hammer movement detection device for detecting the movement of a hammer which strikes strings provided for each key of a keyboard musical instrument. The hammer movement detection device radiates light onto a hammer shank which moves with the hammer and detects at least the displacement of the hammer shank based on the light reflected from the hammmer shank. The movement detection device may be attached to a shank rail which supports the hammer shank in a freely rotatable manner. The hammer movement detection device may be supported using a fixed member which is supported above the hammer shank and below the pin board which is connected to the frame which supports the strings which are struck by the hammer.

Abstract: A marine propulsion forward, neutral, reverse transmission incorporating a single spring for yieldably cushioning the shifting into either forward or reverse. Various embodiments of detent mechanisms and spring locations are illustrated as is an arrangement for providing a different spring loading in one direction from the opposite direction.

Abstract: A marine propulsion unit (1) is provided wherein the main drive shaft (42) includes an integrally formed annular portion (46) of enlarged diameter at the location of a previously utilized lower groove and keepers (38, 37). The enlarged diameter portion increases the mass and strength of the shaft at a position subject to substantial torque forces, thus substantially eliminating problems of shaft fracture or breakage. In addition, the enlarged diameter portion is formed in the shape of a thrust collar so that the shaft can be accommodated by the previous known shaft mounting elements without redesign of the latter.

Abstract: The present invention provides apparatus for changing the direction of rotation of a rotating shaft without changing the direction of rotation of the motor driving the shaft. The present invention includes a drive gear which causes two driven bevel gears to rotate in opposite directions. A control shaft having cam surfaces selectively forces one of two sets of balls into engagement with one of the driven gears to couple that gear with the driven shaft to rotate the shaft in one direction. Rotation of the driven shaft is reversed by changing the position of the control shaft which uncouples one set of balls from the driven shaft and couples the remaining set of balls to the driven shaft.

Abstract: A drive device for a tape recorder by which the recording tape is drawn off one spool by means of a capstan, and is wound-up on another spool, which is driven over a friction coupling by a motor with a speed not substantially above the highest required winding speed, with a drive device driven by the same motor, the drive device for the purpose of fast rewinding being selectively coupleable on one of the two spools. The two drive gears are arranged on a swingable carrier arm driven continuously in oppsite working directions by a stationarily arranged motor via a belt. By swinging the carrier arm in opposite operating directions out of a neutral center position, the drive gears are coupleable from time to time with one of the spool-carrying winding spindles for fast rewinding.