Abstract: In a gearwheel pairing, in which one of a pair of gearwheels has, at least at one side thereof a lid-shaped stop structure for engaging the other gearwheel for retaining it in engagement with the other gear wheel. The arrangement is expediently used in a differential transmission in particular a crown-wheel differential transmission.

Abstract: The application relates to a unitary case for a plurality of angular drives which comprises at least one bevel gear step with a first bevel gear and a second bevel gear, and which is provided for achieving various angles between a transmission input shaft and a transmission output shaft. The second bevel gear is coupled to the transmission output shaft in an indirect rotationally fixed manner. The unitary case is designed for a plurality of possible angular outputs wherein multiplication is substantially constant and the outer diameters of the individual bevel gears are substantially identical.

Abstract: An auxiliary operating device for manually operating a normally motor-operated closure between open and closed positions, the device comprising a shaft, a driving member mounted to the shaft and displaceable between an idle position and an operational position wherein the driving member is operatively coupled to the closure. The device further comprises a manual actuator for first displacing the driving member from its idle position to its operational position and then driving the driving member in order to displace the closure. The actuator can be advantageously mounted at either end portions of the shaft irrespectively of the position of the driving member on the shaft.

Abstract: A gearbox head is provided for a motor-driven, manually guided implement for driving a cutting tool. The gearbox head includes a housing having a planetary gear arrangement, preferably a bevel gearing. At least one gear of the planetary gear arrangement is fixedly disposed on a shaft that, for venting the housing, is provided with a channel that opens out beyond the housing via an outer opening and opens out into an interior of the housing via at least one inner opening, which is formed by at least one portion of the channel that extends essentially radially relative to the longitudinal axis of the shaft.

Abstract: The invention is to provide a chainless transmission mechanism comprising a first shaft connected to a pedal of the bicycle; a first bevel gear connected to the first shaft; a second shaft perpendicular to the first shaft, two ends of which are connected to a second bevel gear and a third bevel gear, respectively, the second bevel gear being matched with the first bevel gear to drive the second shaft; a fourth bevel gear mounted on an axle of a rear-wheel hub of the bicycle to engage with the third bevel gear; a ratchet clutch connected between the rear-wheel hub and the axle; and a connection member connected between the fourth bevel gear and the rear-wheel hub. A bicycle with the chainless transmission mechanism of the invention is of a simple manufacturing process and a lower cost.

Abstract: The invention relates to a transmission with torque division for a helicopter rotor drive. In a manner known per se, in the transmission a first power transmission branch has a first rotatable driving pinion (6) which is in constant engagement with a first toothed wheel (2) on the output side. At least one other power transmission branch has one other driving pinion (9) co-axial to the first driving pinion (6) and in constant engagement with one other toothed wheel (4) on the output side co-axial to the first toothed wheel (2) on the output side. One torsionally elastic member is arranged in the torque flow of each power transmission branch. The torsion-resistance of the torsionally elastic members determines the load proportions of the power transmission branches. The inventive transmission makes possible a high power density with small installation space, light weight and a small number of functional elements.

Abstract: A control arrangement for an adjustable housing of a radar sensor has a holder on which a position of the housing is changeable by at least one adjusting screw which is turnable by a regulatable adjusting drive, and a control electronic unit provided for adjustment, via which said signals produced by the radar signal are evaluated or adjusting data stored in a storage are read, supplied to the corresponding adjusting drive and the position response command signals are transmitted to the corresponding adjusting drives.

Abstract: An three-quarter floating axle drive assembly comprising an axle housing having an elongated axle tube, a rotatable axle shaft extending through the axle tube, a hub member rotatably supported on the axle tube through an anti-friction bearing assembly and drivingly connected to an outboard end of the axle shaft, and an axle shaft retainer disposed at an inboard end of the axle shaft provided for preventing an outward axial displacement thereof.

Abstract: The invention comprises a geared drive ring coupler. The geared drive ring coupler comprises two pairs of adjacent drive rings rotatably connected to each end of a frame. Each pair of drive rings is meshed together with the cooperating pair of drive rings on the opposing end of the frame. The relative spatial arrangement of the axis of rotation of each set of drive rings is maintained by the frame, which in turn holds the drive rings in a predetermined relationship between the pulley sheaves. The drive rings on the driver pulley turn in the same direction as the driver pulley through frictional contact with the sides of the CVT driver pulley sheaves. The drive rings on the driven pulley side rotate in the opposite direction to the drive rings on the driver pulley, since they are meshed together. The driven drive rings are then in frictional contact with the sides of the driven pulley sheaves, thereby driving the driven pulley.

Abstract: A construction of coupling spline sections of an automatic transmission includes: a rotary shaft section having an outer periphery formed with a spline section; a rotary hollow section having an inner periphery formed with a spline section which is coupled with the spline section of the rotary shaft section in a press fitting state; a support member; and a bearing disposed between a part of an outer periphery of the rotary hollow section and the support member. The bearing rotatably bears the rotary shaft section in such a manner as to transmit a torque between the rotary shaft section and the rotary hollow section. The spline section of the rotary shaft section and the spline section of the rotary hollow section which are disposed at least inside the bearing are coupled with each other in a loose state looser than the press fitting state.

Abstract: A method of determining shift points in a step gear transmission system to maximize fuel economy is disclosed. In operation, the method uses fuel economy data from a first gear ratio to determine a first series of constant fuel consumption curves for the first gear ratio. The method then uses fuel economy data from a second gear ratio to determine a second series of constant fuel consumption curves for the second gear ratio. Next, the method determines points of intersection where a respective fuel consumption curve for the first gear ratio intersects its corresponding fuel consumption curve for the second gear ratio. A decision curve is generated from the points of intersection.

Abstract: A right angle attachment configured to be attached to a small electrically powered rotary hand tool of the type that is used in woodworking, hobby work and other work. Being small, lightweight, relatively vibration free and quiet in operation, the attachment is easily attached to a hand tool in a very short amount of time without the use of any special tools. The attachment has a flexible input shaft and an output shaft that are oriented at an angular orientation, such as approximately 90 degrees relative to one another so that the flexible shaft compensates for misalignment between the input shaft and the output shaft of the tool.

Abstract: The invention is to provide a chainless transmission mechanism comprising a first shaft connected to a pedal of the bicycle; a first bevel gear connected to the first shaft; a second shaft perpendicular to the first shaft, two ends of which are connected to a second bevel gear and a third bevel gear, respectively, the second bevel gear being matched with the first bevel gear to drive the second shaft; a fourth bevel gear mounted on an axle of a rear-wheel hub of the bicycle to engage with the third bevel gear; a ratchet clutch connected between the rear-wheel hub and the axle; and a connection member connected between the fourth bevel gear and the rear-wheel hub. A bicycle with the chainless transmission mechanism of the invention is of a simple manufacturing process and a lower cost.

Abstract: A children's bicycle with a bevel gear driving device that includes a pedal intermediate axle, characterized in that the pedal intermediate axle is connected with a drive bevel gear, which drives a connecting rod having bevel gears on both ends thereof, that the bevel gear on the other end of the connecting rod drives the rear wheel bevel gear, and that protecting hoods are provided over the driving bevel gear, the connecting rod with bevel gears, and the rear wheel bevel gear. The driving device avoids the problem of chain falling-off and allows safer use.

Abstract: A hybrid input quill for torque transmissions is provided. The hybrid input quill includes an input shaft with an input pinion gear, with an attached bevel pinion gear allowing auxiliary power to be extracted from the transmission separate from the main transmission gearing system. Through the use of spacing devices, the positions of the input pinion gear and the bevel pinion gear may be independently adjusted. The invention includes transmissions incorporating hybrid input quills, including face gear driven transmissions utilized for driving rotorcraft and any other mechanically driven vehicle.

Abstract: In a first embodiment of the invention, a gear ratio multiplier has directly cooperating gears which serve to rotatably connect an input shaft to an output shaft through an intermediate shaft. The input and output shafts have parallel axes of rotation and extend, respectively, from seals in opposite sides of a housing. The inner ends of the input and output shafts are spaced from one another and are each provided with a pinion gear. The intermediate shaft is rotatably carried between the pinion gears and has an axis of rotation positioned at right angles to the axes of rotation of the input and output shafts. A pair of differently sized ring gears having different numbers of teeth are affixed on the intermediate shaft. The pinion gear on the input shaft engages the ring gear on the intermediate shaft whereas the pinion gear on the output shaft engages the ring gear on the intermediate shaft. The diameter pitch is a matter of advise per application as is the tooth size and tooth number.

Abstract: A gearing with duplex floating toothed portions for transmission between either two parallel shafts or two intersecting shafts comprising two meshing gears(12) and (14) one gears (14) having coaxially disposed toothed portions (16) and (18) interacting with component (20) by spiral joints (22) and (24) different characteristics and an arrangement limitative divided spiral motions of toothed portions (!6) and (18) relatively component (20) by parting plane “A” and arresting device (26). Both toothed portions (16) and (18) of gear (14) and meshing gear (12) have mating teeth whereby both toothed portions (16) and (18) are coupled positively with component (20). Even distribution of applied force between toothed portions (16) and (18) or elimination of the free angular displacement of the gear (12) and (14) with respect to each other within backlash are provided by choice of characteristics of spiral joints (22) and (24).

Abstract: A toothed gearing group comprising two concentric twin shafts, an inner one and an outer one, respectively, a main gear for each twin shaft which is rigid in rotation therewith, a solitary shaft which has a first coupling gear in in meshing engagement with the main gear of the inner or outer shaft, and a second coupling gear, and at least one intermediate shaft rigid in rotation with two coupling gears in meshing engagement with the second coupling gear of the solitary shaft and with the main gear of the inner or outer shaft, respectively.

Abstract: A drive (1) for driving, or drives in, agricultural implements, has a drive housing (2) with a first shaft (7) which is rotatably supported around a first axis of rotation (4) in the drive housing (2). A first shaft end (10) of the first shaft (7) projects from the drive housing (2). A first gear (13) is arranged on the first shaft (7). The first gear (13) is axially fixed and rotatable, to a limited extent, relative to the first shaft (7). A second shaft (24) is rotatably supported around a second axis of rotation (20) in the drive housing (2). A first shaft end (27) of the second shaft (24) projects from the drive housing (2). A second gear (29) is firmly connected to the second shaft (24) in the axial direction and in the direction of rotation. The first gear (13) and the second gear (29) engage one another. The selected assembly enables a limited amount of rotation of the first shaft (7), with the second shaft (24) being stationary.

Abstract: A modular gear system includes a plurality of gear modules and drive modules. The gear modules and drive modules each have a cylindrical output pinion which facilitates connecting the various modules to provide a desired transmission ratio. At least one of the gear modules is an angular gear module which incorporates a contrate gear which can mesh with an output pinion of a drive module or the output pinion of another gear module.

Abstract: An angular transmission using magnetorheological fluid (MR fluid) to transmit movement between two (2) shafts not aligned on the same axis to each other to provide an infinite variable ratio instead of the fixed ratios present in known prior art gear driven angular transmissions by controlling the magnetic field applied to the magnetorheological fluid (MR fluid) through the use of one (1) or more electric coil(s) generating a magnetic field. In particular, the angular transmission using magnetorheological fluid (MR fluid) in accordance with a preferred embodiment of the present invention includes a pair of conical shaped hollow heads, one connected to an input shaft and one connected to an output shaft, the input shaft, the output shaft and the conical shaped hollow heads being assembled inside of a housing where the input shaft and the output shaft are mounted at an angle to each other (i.e.

Abstract: An accessory gear drive for gas turbine engine utilizes a radially extending, floating tower shaft which is unrestrained against radial movement, but includes a resilient biasing means for normally holding the tower shaft in power driving interengagement between the central drive shaft of the engine and an external accessory gear box. For engine maintenance, the tower shaft may be readily accessed and shifted radially outwardly by compressing the biasing means in order to facilitate easy engine disassembly and assembly.

Abstract: A continuously variable transmission (10) having input (12) and output (14) gearsets each having a pair of bevelled gears (16) rotatable about generally coplanar respective axes of rotation (22) and with the two bevelled faces (24) in a spaced-apart parallel relationship. The input (12) and output (14) gearsets are mounted opposite one another with the bevelled faces (24) aligned. A restorably deformable transfer ring is mounted between the input and output gearsets and a portion of the transfer ring (28) is captured between opposed teeth (24) of the bevelled gears (16). The transfer ring (28) is laterally moveable relative to the input (12) and output (14) gearsets.

Abstract: An angle drive, especially for agricultural implements, has a housing with two housing portions (1, 2). The two housing portions (1, 2) abut one another at a right angle. The angle drive is provided with a first bevel gear (11) arranged in the first housing portion. A second bevel gear (27) is arranged in the second housing portion. The two bevel gears (11, 27) are each supported by rolling contact bearings (16, 17, 33). The housing interior is sealed by seals (20, 20') between the first bevel gear (11) and the first housing portion (1) and between the second bevel gear (27) and the second housing portion (2). The two housing portions (1, 2) which concentrate on merely covering the outlines of the two bevel gears (11, 27) and provide an aperture (25) in the region of abutment between the two housing portions (1, 2), in which the two sets of teeth (14, 18) engage one another, produce a compact unit with a small enclosed volume.

Abstract: A chainless transmission mechanism for a bicycle, including a casing mounted in a bottom bracket to hold a bottom bracket bearing axle, permitting the bottom bracket bearing axle to be driven by pedals to turn a rear-wheel hub through a transmission shaft and two transmission gear sets, wherein the bottom bracket has a first end, a second end, and a notch at the second end thereof; the casing is a cylindrical shell inserted through the bottom bracket, having a first end secured to the bottom bracket outside the first end of the bottom bracket by a clamp, a second end disposed outside the second end of the bottom bracket, and a hollow projecting block raised from its second end and forced into engagement with the notch at the second end of the bottom bracket.

Abstract: An orthogonal differential drive has a main shaft with a main axis. Also included is a primary gear, coaxially mounted on the main shaft, and a secondary gear. The differential drive also has a harmonic drive with a main throughput, a trim throughput, and a harmonic throughput. The harmonic throughput has a speed that is established as a linear combination of speeds of the main throughput and the trim throughput. The secondary gear is coaxially coupled to the main throughput of the harmonic drive. The secondary gear has an axis of rotation positioned transversely to that of the primary gear for engaging the primary gear. Also included is a transfer device spaced from the main axis of the main shaft for interactively engaging the trim throughput of the harmonic drive.

Abstract: The present invention is directed to a unique gear set including a conical involute pinion and a mating face gear. The mating face gear has an axis whose location and orientation is usually configured, as intersecting with or slightly offset from the pinion axis. The pinion teeth are formed as involute helicoids generated from a base cylinder. The mating face gear teeth are defined by the shape of the mating conical pinion teeth surface at that time when the two mating gears are specifically positioned so as to perform synchronous rotations about their respective axes of rotation. This arrangement allows the gears to mesh and transmit high torque at high speeds through an angle as required in helicopter transmissions and the like.

Abstract: An automotive vehicle suspension unit assembly located near the sides of a vehicle includes a driving axle shaft, a gear box, an electric motor, and a suspension beam. The driving axle shaft, which drives a wheel hub of the vehicle, defines an axis of rotation about which the wheel hub rotates. The gear box includes a pinion shaft connected to a pinion gear which meshes with a ring gear. The pinion shaft is driven by a motor drive shaft which extends outwardly from the electric motor. The motor generates the torque necessary to drive the driving axle shaft. As known, suspension beams extend transversely to the axis of rotation of the driving axle shaft. The electric motor is pivotally attached to the gear box by means of a flexible coupling and is pivotally attached to the suspension beam by means of a movable connection.

Abstract: A gear reduction assembly having directly cooperating gears which serve to rotatably connect an input shaft to an output shaft through an intermediate shaft. The input and output shafts have parallel axes of rotation and extend, respectively, from seals in opposite sides of a housing. The inner ends of the input and output shafts are spaced from one another and are each provided with an identical pinion gear. The intermediate shaft is rotatably carried between the pinion gears and has an axis of rotation positioned at right angles to the axes of rotation of the input and output shafts. A pair of differently sized ring gears having different numbers of teeth are affixed in a back-to-back relationship on the intermediate shaft. The pinion gear on the input shaft engages the relatively smaller ring gear on the intermediate shaft whereas the pinion gear on the output shaft engages the relatively larger ring gear on the intermediate shaft.

Abstract: An pinion gear includes a shaft having an input end, an output end and an intermediate portion being disposed therebetween. The input end includes a spline portion for directly securing the pinion gear to a drive shaft. The output end includes gear teeth for meshing engagement with a ring gear of a drive gear assembly. The intermediate portion includes a surface for mounting a bearing for supporting the pinion gear during use.

Abstract: An improved mount for an electric motor and drive gear includes mounting both of the motor and drive gear within a gear housing for a vehicle wheel. The motor is mounted on one side of the drive axis of the wheel, and the drive gear is mounted in bearings on an opposed side of the drive axis. In this way, the overall longitudinal distance required for mounting both the motor and the drive gear is reduced when compared to the envelope of the vehicle wheel.

Abstract: A transmission for self-propelled walking lawn mowers includes a casing, an input shaft inserted into an opening formed in the casing, an output shaft disposed perpendicular to the axis of the input shaft, a drive gear mounted on the input shaft, a drive gear mounted on the output shaft, a power transmission gear mechanism for transmitting drive power from the input shaft to the output shaft, and bearing structures for supporting the input shaft. The bearing structures include a lower supporting structure disposed adjacently below the lower end of the input shaft, and the lower supporting structure includes a supporting member which projects from the inner wall of the casing to a position adjacently below the lower end of the input shaft, wherein a lower-end face of the input shaft and an upper face of the supporting member are engaged to hold the input shaft at its horizontal position, thereby reducing the height of a lawn mower.

Abstract: An angle attachment is attached to a drill without removing the drill chuck by securing the shaft of a coupler in the drill chuck and seating the coupler on the nut of either shaft of the angle attachment, securing the angle attachment to the drill with a sleeve, and threading an attachment chuck onto the shaft of the angle attachment which is not coupled to the drill chuck

Abstract: A wheel hub and transmission gear arrangement of a chainless transmission mechanism for a bicycle, including a wheel hub having an axle block with an outside annular groove and intersected locating grooves, a transmission gear having an annular base mounted on the axle block, the annular base having a plurality of inward projecting blocks respectively forced into engagement with the locating grooves of the axle block and an inside annular groove, and a split binding ring mounted within the outside annular groove of the axle block and the inside annular groove of the transmission gear to firmly secure the axle block and the transmission gear together.

Abstract: A vertical/horizontal spindle head for machine tools having a main transmission shaft with a first bevel gear secured thereon, a lower rotatable housing having a bevel gear axle secured therein, an upper seat having a push/pull apparatus for axially moving the lower rotatable housing relative to the upper seat, a main shaft having a second bevel gear secured thereon, third and fourth bevel gears coaxially arranged on the bevel gear axle, and a curved coupling between the upper seat and the lower rotatable housing. Between the third and fourth bevel gears are springs to move the third bevel gear axially and maintain it in engagement with the first bevel gear. A slidable spline device is provided between the third bevel gear and the bevel gear axle. The slidable spline device is disengaged in a first position where the curved coupling is coupled and is engaged in a second position when the lower rotatable housing is pushed away from the upper seat by the push/pull apparatus and the curved coupling is uncoupled.

Abstract: A power ratchet wrench including a handle for gripping and holding the wrench and a head having a ratchet mechanism including a drive shaft capable of powered rotation about its axis. The head and handle have openings generally in registration with each other. A pin is received through the openings, interconnects the handle and head and permits pivoting movement of the handle and head relative to each other about the transversely extending longitudinal axis of the pin to any of a multiplicity of selected relative angular orientations. The pin includes a first section sized and shaped for locking the handle and head together in fixed angular orientation about the pin axis and a second section sized and shaped for permitting free relative pivoting motion of the handle and head.

Abstract: A driving unit comprising an electric motor and a reduction gear unit preferably intended for an industrial robot. A gear case (11) supports a motor (10) with a shaft (12) extending into the gear case and provided with a bevel pinion (13). An intermediate shaft (15) is rotatably journalled with two bearings (16). On the intermediate shaft are fixed a larger bevel gear (14) and between the bearings a smaller cylindrical gear (17). An output shaft (20) provided with a larger cylindrical gear (18) is rotatably journalled and parallel with the intermediate shaft (15). The gears are arranged such that the bevel pinion (13) is in engagement with the larger bevel gear (14) and the smaller cylindrical gear (17) is in engagement with the larger cylindrical gear (18). The motor shaft (12) is oriented approximately perpendicular to the output shaft (20).

Abstract: A gear mechanism in which the backlash between bevel gears can be easily adjusted is provided. The gear mechanism has first and second bevel gears which engage with each other; a supporting member, including first and second threaded portions, for the first and second bevel gears, and first and second bearings for rotatably supporting the first and second bevel gears on the supporting member. The first and second bearing include cylindrical members with threaded portions for engagement with the first and second threaded portions of the supporting member.

Abstract: A transmission for a self-propelled walking lawn mower is disclosed, the transmission comprising:i) a casing;ii) input and output shafts supported by the casing, the output shaft driving ground engaging wheels of the mower and the input shaft receiving drive force from an engine of the mower wherein the input shaft extends substantially perpendicular to the output shaft and is located almost directly above the output shaft;iii) a drive gear secured on the input shaft;iv) a driven gear rotatably mounted on the output shaft and meshing with the drive gear; andv) a clutch for transmitting the rotation of the driven gear to the output shaft.

Abstract: Reversing gears for boats, comprising an angle gear with two gears (4,5) which are rotatably mounted on a secondary shaft (8) and are alternately lockable to the shaft by means of a clutch sleeve (11). The clutch sleeve has exterior clutch cones (12,13), which are coated with a surface coating of chemical nickel which has been impregnated and coated with a fluoroplastic layer and then been heat-treated. The rotatably mounted gears (4,5) have interior clutch cones (14, 15) of tempered steel.

Abstract: Reduction gearing using a nonsplit or one-piece case where bearing housings are formed in the slots of the case opposite one another to receive at least intermediate pinion stems with ends journaled in bearings in the respective bearing housings. The bearing housings are formed with exterior slots of a width at least equal to the diameters of reduced necks at the ends of the pinion stems or sufficient to clear the inner races of the bearings, when such races are provided, so that the reduced diameter portions or inner races can be laterally inserted into the bearing housings and the outer races then positioned axially therein to retain the journals. The outer races have two shoulders for the respective bearing rollers. The construction allows preassembly externally of the case of the pinion stems and mounting of the pinion stems within the case via the bearing assemblies.

Abstract: The reduction gear box comprises a housing, an input shaft having its longitudinal axis horizontal and coupled to a drive shaft, an output shaft having its longitudinal axis horizontal and coupled to a utilizer shaft, and several drive reduction stages within the housing between the input shaft and the output shaft. One stage after the first stage includes a gear pair constituted by a hypoid bevel pinion and a bevel crown gear with mutually perpendicular axes, the axis of the pinion being offset from the axis of the crown gear by an offset distance equal to the algebraic sum of the offset of interaxial spacing between the other gear stages measured in the direction of the offset distance of the gear pair such that the axes of the input shaft and of the output shaft intersect at right angles and lie in the same horizontal plane.

Abstract: An automotive headlamp including a gear apparatus having a cylindrical gear shaft supporting wall extending from an opening edge of a shaft insertion hole formed in a supporting wall of a lamp housing, the gear shaft supporting wall being formed on an edge surface thereof with slits or protrusions, a gear shaft having a gear part which is provided at a surface thereof facing the edge surface of the gear shaft supporting wall with projections or slits which engage with the slits or projections of the gear shaft supporting wall, the gear shaft further including an engagement groove formed on an outer peripheral surface of a portion in the vicinity of the other end thereof, and a fastener engaging with the engagement groove for holding the gear shaft in position when it is inserted into the gear shaft supporting wall and the shaft insertion hole. The fastener is provided with resilient pieces extending outward from an outer peripheral edge thereof.

Abstract: A compact gear with a gear housing (1) and an outgoing main shaft (4) which is rotatable in relation to the gear housing (1). The gear housing (1) supports a motor (2) with a drive shaft (3) projecting into the gear housing (1). On the drive shaft (3) there are arranged a first larger (6) and a second smaller conical toothed wheel (7). Transversely through the main shaft (4) extends a cross shaft (9) which is rotatably journalled in the main shaft (4). On opposite sides of this cross shaft (9) two equally large first (13) and second (14) crown wheels are rotatably arranged on the main shaft (4). The crown wheels (13, 14) engage, on opposite sides, with a third conical toothed wheel (12) arranged on the cross shaft (9). A third crown wheel (18) with a larger diameter than the second crown wheel (14) is rotatably arranged around the main shaft and secured to the second crown wheel (14).

Abstract: A speed changing device for a bicycle includes a tubular shell adapted to be mounted on a bicycle frame of the bicycle, a crank axle extending axially and rotatably through the tubular shell and having two end portions that extend respectively out of the tubular shell, and a gear wheel set disposed in the tubular shell. The gear wheel set includes a connecting shaft extending transversely from an intermediate portion of the crank axle, a driving bevel gear mounted rotatably on the connecting shaft, and first and second driven bevel gears mounted rotatably on the crank axle and disposed respectively on two sides of the connecting shaft. The first and second driven bevel gears mesh respectively with the driving bevel gear, and the first driven bevel gear can be locked selectively to the tubular shell.

Abstract: A drive unit having a drive gear rotatable about a drive-gear axis mounted on an angle transmission having a housing formed unitarily of one piece with a throughgoing passage centered on a longitudinal axis, a plurality of substantially planar outer faces each extending substantially parallel to the axis, one of the outer faces bearing flatly on the drive unit, a transverse bore opening at and extending between the one face and the passage along an axis transverse to the longitudinal axis, and a plurality of undercut grooves extending longitudinally the full length of the housing and opening at least at the one outer surface. Each of the grooves is substantially narrower at the respective outer face than inward therefrom measured in a direction transverse to itself and parallel to the respective outer face. A main gear is rotatable in the passage about the longitudinal axis and a drive gear is rotatable about the transverse axis in the transverse bore in mesh with the main gear.

Abstract: A reverse gear for boats, comprising a bevel gear transmission with two gears (4,5) rotatably mounted on a secondary shaft (8) and alternately engageable with the shaft by means of an engaging sleeve (11). The engaging sleeve is made of bronze and has outer engaging cones (12,13), which are coated with a surface layer of molybdenum. The rotatably mounted gears (4,5) have inner engaging cones (14,15) of case hardened steel. The molybdenum layer need be only about 0.1 mm thick and, contrary to molybdenum coatings on steel inner engaging cones of the prior art, need not be worked after deposition.

Abstract: The present invention relates to an improved gearbox having both a symmetrical housing and straddle-mounted bearings, to provide a gearbox which is both versatile and moderate in cost.

Abstract: A rotating machinery system provides flexible clutch configuration. In accordance with a first embodiment, a tubular shaft is rotatable about a first axis and has a hollow core, the tubular shaft having a first end and a second end; a second shaft coaxial with the tubular shaft and rotatable about the first axis and located in the hollow core, the second shaft having an input end and a transfer end; and a clutch assembly coupling the first end of the tubular shaft to the transfer end of the second shaft for rotating the tubular shaft responsive to rotation of the second shaft. In accordance with a second embodiment, there is a rotary machinery system for converting rotation about a first axis to rotation about second and third axes.

Abstract: Transmission for a single engine drive for dual concentric propellers in a straight or V-drive arrangement with the straight-drive including four shafts and nine gears and the V-drive adding two more shafts and four more gears.