Abstract: A bottom bracket bearing axle for a bicycle, including two screw caps fastened to two opposite ends of a bottom bracket to hold two ball bearings, a bottom bracket bearing axle supported on the ball bearings, and a bush mounted around the bottom bracket bearing axle within the bottom bracket, wherein the ball bearings are respectively mounted around bottom bracket bearing axle within the screw caps and having respective balls respectively supported on a respective annular flange of the bottom bracket bearing axle at an outer side; the bush is comprised of two symmetrical halves fastened together by a dowel joint and mounted within the bottom bracket around the bottom bracket bearing axle between the ball bearings, having a corrugated outside wall and two end flanges at two opposite ends respectively stopped against the ball bearings.

Abstract: The present invention provides a mean axis of bicycle, which includes a five-way pipe, an internal pipe, an axle, two setting rings, two ball housings and two ball bearings. Wherein the inside walls at both ends of the internal pipe and the outside walls of the two ball housings are turned threads separately, and one ball housing has a ring shoulder at the middle position of the thread. Thereby the two ball housings fixed one ball bearing, the axle and another ball bearing in the internal pipe respectively with the outside threads to form a mean axis assembly. Then the two setting rings fix the mean axis assembly in the five-way pipe from both sides by connecting to the ball housings of the mean axis assembly in thread joint, and to the five-way pipe in bell and spigot joint.

Abstract: A cover faces an end portion of a ball head cup attached to an end of a head pipe and is fitted on a fork stem. A rolling ball group is interposed between the ball head cup and the cover. A top cone is put on the rolling ball group from the cover side. The cover is formed of rubber or an elastic synthetic resin. The outer periphery of the cover is configured to be in contact with the inner periphery of the ball head cup. A cone ring inserted in the top cone and having a slit in its side wall is attached in the cover. Thus, the cover prevents the invasion of rainwater etc. through the slit of the cone ring.

Abstract: A bottom bracket bearing for a bicycle is provided which includes an axle, a pair of ball bearings, a flanged cup, and an adjusting cup disposed within a five-way tube. The axle has a reducing quadrangle extending from both ends thereof, and a continuation area between the quadrangle portion an a cylindrical portion of the axle, and has a flat circular flange formed adjacent the cylindrical portion. A joint-packing is positioned against the flat circular flange, the thickness of the joint-packing extending at least 1 mm beyond the flat end of the flanged cup, thereby substantially preventing the crank with the chain wheels from contacting the flanged cup.

Abstract: A bicycle bottom bracket and bearing axle arrangement including two end caps fastened to the bottom bracket of a bicycle at two oppoisite sides to hold a bushing around the bottom bracket bearing axle, two nuts and two clamps respectively fastened tot he bottom bracket bearing axle to hold two axle bearings at two opposite ends of the bushing around the bottom bracket bearing axle, and a cushion mounted around the bottom bracket bearing axle between one nut and one clamp had having inward teeth respectively engaging in respective longitudinal sliding grooves on the bottom bracket bearing axle.

Abstract: A bicycle wheel or pedal crank hub with a bearing preload device in which an axle end cap that is attached to the end of an axle extending through the hub and supported on a bearing assembly is used for preloading the hub bearing assembly together with a split compression ring. For adjusting the preload on the hub bearing assembly, the compression ring is expanded or contracted causing a beveled surface of the compression ring to act on a bevel of either an annular circumferential flange of the axle end cap or a spacer disposed between the compression ring and the circumferential flange of the axle end cap.

Abstract: A hub of a bicycle includes a hub shell with two ends and an axle which rotatably extends through the hub shell, a dust cap threadedly engaged to each end of said hub shell, a bearing rotatably disposed between the axle and each of the dust caps, a tubular element mounted to the axle and located between two first flanges each of which extends radially and outwardly from the axle, the tubular element having a fourth groove defined in an outer periphery of at least one end thereof so as to form a first shoulder and a second shoulder wherein the first shoulder is located near a distal end of the tubular element and is received in the third groove of the corresponding dust cap, the second shoulder having a second flange extending inwardly and radially therefrom for contacting against the corresponding first flange of the axle.

Abstract: A steering bearing assembly for a wheeled vehicle, which includes a steerer tube rotatably passing through a head tube of the wheeled vehicle by disposing an upper and a lower steering bearing assemblies therebetween, the assembly has an upper race and a lower race and a plurality of balls rotatably received therebetween. A washer and an absorbing element are disposed between the upper race and the steerer tube. A force exerting element exerts a downward force on the washer to set the upper race in position.

Abstract: A bicycle hub body for the front hub assembly of a bicycle wheel has two hub flanges each with an opening therein having a spline structure formed around its circumference with alternating teeth and grooves extending radially inwardly of the opening. A tubular center section extends between the flanges to support and maintain the flanges apart and includes ductile ends which extend into the flange openings and are outwardly pressed into intimate surface-to-surface contact with the flange spline structures and the ductile ends are deformed against the flange spline structures to have cooperating spline structures including radially outwardly extending grooves and teeth which align with the teeth and grooves, respectively, of the bore spline structure.

Abstract: A bicycle crank axle comprises two fitting shafts located respectively at both ends thereof. One of two fitting shafts is provided with a stopping block while another one of the two fitting shafts is provided with a threaded portion. Two fitting shafts are fitted respectively into a tapered sleeve engageable with a tapered bearing which is fastened with a tapered fixation seat. The threaded portion of the crank axle is engageable with a fastening nut by which the crank axle can be fixed with ease and precision.

Abstract: An adjusting device assembly for making, a manual adjustment of a bicycle head bowl bearing comprises a front fork upright tube inserted into a head tube in which a bearing bowl is received. A bearing is received in the bearing bowl and can be located securely by an inner ring, which can be forced to move downwards by a locating ring which is in turn caused to move downwards by a clamping ring capable of being caused to move downwards by an adjustment bolt which can be fastened manually.

Abstract: A bottom bracket assembly includes a bottom bracket, a first bowl member having an outer threaded portion for engagement in an inner threaded portion of the bottom bracket, a flange portion formed on a distal end of the first bowl member, a second bowl member having an outer threaded portion for engagement in an inner threaded portion of the bottom bracket, a tube fixedly mounted in the bottom bracket and including a first end having an outer threaded portion for engagement in an inner threaded portion of the first bowl member and a second end having a tapered surface for urging on a tapered surface of the second bowl member, a second flange portion formed on the first end of the tube for abutting against the flange portion of the first bowl member, an axle rotatably mounted in the tube, a first ball bearing rotatably mounted between an annular recess of the first bowl member and an annular recess of the axle, and a second ball bearing rotatably mounted between an annular recess of the tube and an annular rec

Abstract: A bicycle hub assembly includes a hollow hub body having two enlarged end portions and two bearing assemblies mounted respectively in the enlarged end portions. Each bearing assembly has an inner ring, an outer ring and bearing elements confined between the inner and outer rings. The outer ring is in tight contact with the hub body. An elongated shaft passes rotatably through the hub body and is fixed to the inner rings. The elongated shaft has two ends extending outwardly of the hub body. A hub cover is sleeved around the elongated shaft adjacent to each enlarged end portion. The hub cover includes an inner annular member sleeved around the elongated shaft adjacent to one bearing assembly and an outer annular member sleeved around the inner annular member. The outer annular member has an inner end facing one enlarged end portion and an outer end opposite to the inner end.

Abstract: A bottom bracket bearing axle mounting structure including a barrel received in the transverse mounting hole of the bottom bracket of a bicycle to hold an axle, a first screw cap threaded into one end of the transverse mounting hole to hold a first ring of balls on a first ball bearing on the axle, and a second screw cap threaded onto one end of the barrel and into an opposite end of the transverse mounting hole to hold a second ring of balls on a second ball bearing on the axle.

Abstract: A light-weight, strong and rigid bicycle crankshaft assembly utilizing a two-piece spindle. Each spindle piece is integrally joined to a crank arm, and this joint, as well as the joint of the crank arm and the pedal tube, is reinforced with gussets. The two spindle pieces themselves are connected by means of a simple allen bolt within the interior of the bottom bracket shell, and this connection is thereby protected from the elements. As the two spindle pieces are pulled together by the allen bolt, they exert opposing forces on the inner race of a cartridge bearing, thereby fixing the lateral location of the spindle within the bottom bracket without exerting pre-load on the bearings. Proper alignment is easily accomplished by means of one or more spacers placed on either side of this inner race of the cartridge bearing.

Abstract: A bottom bracket for a bicycle includes an axle extending through a tube which has a first end with a first hole defined therein and a second end having a plurality of hook elements extending therefrom for engagement with a second cap at an engaging shoulder defined in the second cap, the first hole of the tube has a tapered inner periphery for engagement with a first flange having an outer tapered periphery of the axle, a first bearing is disposed between the first cap and the first end of the tube and a second bearing is disposed between the second cap and the second end of the tube, a housing threadedly engaged to an outer threaded periphery of the first and the second caps respectively such that the axle is securely engaged between the first cap, the tube and the second cap by the engagement of the hook elements and the engaging shoulder and the engagement of the first flange and the first hole of the tube.

Abstract: A bicycle pedal crank bearing system has a hollow axle within which expandable cone shaped discs are flattened so as to expand radially outward and expand the axle into locking engagement with a thrust sleeve surrounding the axle. Since the thrust sleeve can not move axially relative to the bearing, the axle is likewise axially positioned, but is still free to rotate. The chain path is, thus, easily aligned and access to the bearings for maintenance is made easier.

Abstract: In the bicycle hanger structure of the invention, a slope such as taper surface or spherical surface formed at one end side of a sleeve of a crankshaft unit is adjusted to a corresponding slope of a hanger, and the other end side is screwed and fixed in the corresponding hanger, so as to be screwed to the hanger only at one side. As a result, effects of deformation of female threads due to thermal deformation of right and left lugs of the hanger do not act on the rotation condition of the crankshaft, and one or both of processing of female threads on the right and left lugs of the hanger may be omitted, and screwing is required only in one position for mounting the crankshaft and the assembling of crankshaft is easy and working efficiency is enhanced, thereby obtaining a bicycle hanger structure not spoiling the rotation condition of the crankshaft.

Abstract: A pedal crank bearing assembly includes a housing, a tube, two races, two bearings and an axle. The axle is rotatably engaged within the tube by two bearings and at least one bearing is received in an inner side of one of the races which is threadedly engaged to an inner periphery of the housing and the tube is threadedly engaged to an inner periphery of the race. The race has a serrated face defined at an end thereof for engagement to a stop fixed on the tube for preventing the race from rotating.

Abstract: A bicycle hub includes a hub shell having two annular portions formed in the ends. The annular portions each has an annular depression formed in the outer portion so as to form a tapered surface in the inner portion. Two bearing shells are engaged in the annular portions and each has a protruding flange for engaging with the annular portions so as to retain the bearing shells in place. The tapered surfaces of the hub shell are engaged with the bearing shells so as to support the bearing shells in place and so as to prevent the bearing shells from being broken.

Abstract: Bushing for bicycle wheels, which consists of a tubular body that is integral with the bicycle frame and perpendicular to the frame. The bushing includes a free-turning axle coaxially mounted inside the tubular body, with no possibility of axial displacement from same. The bushing further has two hollow revolving hubs that can be coaxially coupled to each other, with no possibility of relative turning. A device is also provided for fastening the two hubs to each other and to the axle. The outer hub is integral with the bicycle wheel in coaxial position, while the inner hub is fastened to the axle, without the capacity to turn in relation to same.

Abstract: A fixing device of a bicycle pedal axle comprises an axle tube, an inner sleeve and a threaded casing. The axle tube is fitted into the inner sleeve and provided peripherally at the front end thereof with a bevel tapered surface. The threaded casing is fitted into the axle tube such that an outer threaded portion of the threaded casing engages a threaded end of the axle tube. The threaded casing is provided additionally with a plurality of tangent slots and an inner come engageable with the bevel tapered surface of the inner sleeve.

Abstract: A fastening device of bicycle pedal axle comprises an outer sleeve, a locating sleeve, and a fastening ring. The pedal axle is held securely by the outer sleeve and the locating sleeve, which are in turn fastened securely together by the fastening ring having a plurality of retaining projections which are inserted into the insertion slots of the outer sleeve and the locating sleeve.

Abstract: A headset for a bicycle includes an upper bearing assembly and a lower bearing assembly between which is disposed a head tube and a steerer tube is inserted through head tube and rotatably engaged between the two assemblies. The upper bearing assembly has a bearing with a plurality of rollers each roller is disposed in an inclined fashion by 10-20 degrees regarding to a vertical line of said assembly.

Abstract: A hub assembly for a bicycle includes an axle having a first end and a second end each defining an outer thread formed on a peripheral portion thereof. A hub member is rotatably mounted around the axle. A first bowl member and a second bowl member are respectively mounted in the first and second end portions of the hub member. A first cone member is threadedly engaged on the first end of the axle and has a first annular groove defined on an outer peripheral surface thereof. A first roller element is rotatably received in the first annular groove and bears against the first bowl member. A first ball bearing is rotatably mounted between the first bowl member and the first cone member. A second cone member is threadedly engaged on the second end of the axle and has a second annular groove defined on an outer peripheral surface thereof. A second roller element is rotatably received in the second annular groove and bears against the second bowl member.

Abstract: A bicycle pedal for attaching to a crank arm having a pedal shaft including an attachment portion formed at one end thereof and attached to the crank arm, the pedal shaft defining a small diameter portion formed adjacent the other end thereof and having a smaller diameter than the attachment portion, and a first and a second ball bearings arranged in a region of the small diameter portion and spaced apart from each other axially of the pedal shaft. A needle bearing is disposed adjacent the ball bearings, and a pedal body is rotatably supported on the small diameter portion through the first and second ball bearings and the needle bearing. The pedal body defines at least one tread on a surface thereof. The needle bearing may be disposed between the first ball bearing and second ball bearing, or may be disposed closer than the first and second ball bearings to the crank arm or closer than the first and second ball bearings to an extreme end of the pedal shaft.

Abstract: A quick release mechanism for securing a part to the frame of a bicycle. The mechanism includes an axially elongated skewer element adapted to be mounted to the frame. A fastening element is rotatably mounted on the skewer element for securing the part to the frame upon relative rotation of the skewer and fastening elements in a first direction and for releasing the part upon relative rotation of the skewer and fastening elements in a second direction. Ratchet means is attached to one of the elements for turning that element to selectively effect relative rotation of the two elements in the first and second directions. Hardened lock washers are embedded in the confronting faces of the fastening element and a washer mounted on the skewer.

Abstract: A steering bearing assembly includes a head tube, a steerer tube that has a first end which is connected to a front fork of a bicycle and which extends through the head tube, and a bearing assembly disposed between the head tube and the steerer tube. A truncated cone-shaped inserter is disposed in a second end of the steerer tube and has an axially extending threaded bore formed therethrough. A C-shaped resilient member with an inner tapered wall is press-fitted into the steerer tube above the inserter. A threaded bolt is disposed on the second end of the steerer tube and is threaded into the inserter. When the threaded bolt is tightened, the resilient member expands radially to abut frictionally against the steerer tube and to compress downward simultaneously a stem that is disposed on the head tube around the steerer tube.

Abstract: A collapsible bicycle comprises a frame, a front and rear wheels rotatably attached thereto, and a drivetrain for transmitting torque to the rear wheel, with the frame including a movable structure on which the rear wheel is attached. The frame carries a pair of lower stay elements on a lower portion thereof and a fork member on an upper portion thereof with the prongs of the fork member defining a pair of upper stay elements. The front ends of the lower stay elements are adjoined with respective pivot rings attached to a bottom bracket of the frame so as to enable the rotation of the movable structure thereabout, while the male and female elements of a quick-release type connector are provided on the shank portion of the fork member and an upper portion of a seat tube of the frame to enable the fixing of the movable structure thereto. The frame is further provided with an arcuate down tube adapted for the positioning thereunder of the rear wheel and movable structure when the bicycle is in a compacted form.

Abstract: A journal including a cap engaged on a head tube of the bicycle, a bowl rotatably engaged on the cap, a nut engaged on the bowl, a sleeve extended downward from the nut and an annular notch formed in the lower portion of the nut, two elastomeric rings engaged in the annular notch of the nut, one of the rings engaged between the nut and the bowl, and the other ring engaged between the sleeve and the bowl in order to absorb shocks and vibrations transmitted to the journal.

Abstract: An axle structure for driving a bicycle includes an axle rotatably mounted in an axle housing which is rigidly connected within a shell to transfer forces received from a pair of cranks to a driven chain wheel to drive the bicycle forward.

Abstract: A crank shaft unit for rotatably mounting bicycle crank arms in a bottom bracket includes, and adapters for maintaining the crank shaft unit in position relative to the bottom bracket. The crank shaft unit includes a crank shaft having connecting projections formed at opposite ends thereof for engaging inside walls of bosses of the crank arms, a cylindrical member surrounding the crank shaft, and bearings for rotatably supporting the crank shaft in inside walls of the cylindrical member. The adapters are mounted between an inside wall of the bottom bracket and the crank shaft unit. At least part of the bosses of the crank arms extend into annular spaces formed between inside walls of the adapter means and the crank shaft. Annular stepped spaces extend from the ambient to surfaces of the crank shaft through the adapters and bosses.

Abstract: A hub of a bicycle including a hub shell having a tapered surface formed in each end, an axle disposed in the hub shell, two bearings engaged on the axle, a tube engaged on the bearings and having a cone formed on one end, the cone having a tapered surface engaged with one of the tapered surfaces of the hub shell, and a cap threadedly engaged on the other end of the tube and including a tapered surface for engagement with the other tapered surface of the hub shell, whereby, the hub shell is clamped between the cone and the cap.

Abstract: A journal including a lower cap engaged on an end portion of a head tube of a bicycle, the lower cap having an annular recess, a bearing engaged in the annular recess of the lower cap, an upper cap threadedly engaged on the upper portion of the front fork and engaged on the bearing so that the front fork is rotatable relative to the head tube, and a compression nut threadedly engaged above the upper cap so that the upper cap can be stably retained in place.

Abstract: Apparatus of dual partially independent mechanism to propel bicycles or other vehicles, having a bottom bracket shell attached to a frame, a pair of main shafts mounted separately in said bottom bracket shell, a pair of propulsion levers supporting operating pedals, a pair of arcs each arc attached to each propulsion lever which is mounted on each main shaft, a pair of chains, each chain hooked with one end portion to one arc, and the other end portion of the chain entrained around one of the two freewheels which are mounted on a wheel hub which is disposed rearwardly of the bottom bracket shell, a pair of springs, each spring hooked from one end portion of a chain to the rear portion of each lever respectively.

Abstract: A bottom bracket bearing unit for a bicycle or the like has an installation unit formed by a long sleeve and short sleeve of synthetic resin formed directly with race grooves for a pair of double bearings which have steel balls riding between the grooves of the sleeves and the grooves of the pedal-crnak axle or shaft which is received in these sleeves.

Abstract: A bicycle hub includes a pair of sleeves rotatably supported on an axle, and a dust cap having a cylindrical portion engaged on each of the sleeves. An outer peripheral surface of one sleeve is curved, and an inner peripheral surface of a cylindrical portion of a dust cap is curved and is rotatably engaged with the curved outer peripheral surface of the sleeve so that the axle is rotatable about the dust cap by engagement between the curved outer peripheral surface of the sleeve and the curved inner peripheral surface of the cylindrical portion.

Abstract: A hub includes an axle. Each end of the axle has an annular groove and a longitudinal groove. A dust cap, two bearings and a cone are provided on each end of the axle. A clamping ring has a key extending inwards for engaging with the longitudinal groove of the axle. The clamping ring is tapered from an outer peripheral edge toward a center so that the clamping ring is resilient. A lock ring is engaged with each annular groove. The clamping rings stably retain the axle in place so that the axle do not move laterally.

Abstract: An improved bicycle bottom axle cup assembly comprising a five way pipe, an axle, two cups, two ball bearings, an adjustable connector, a lock ring and a packing ring, and constructed in such way that it can be assembled without any five way pipe and adjusted to meet the need of bottom axles of different lengths.

Abstract: A rolling bearing unit with a pair of axially spaced grooves in the shaft, rolling bearing elements in the grooves, sheet metal outer race elements secured in a housing, and an adjusting ring for driving one of the outer race elements axially relative to the housing and to the other race element.

Abstract: A dynamo-electric cycle axle which resides inside an axle of a bicycle, motorcycle, wheelchair, etc. An axle cylinder with curved permanent magnets mounted to its inner periphery serves as a rotor. A stator, rotating on ball bearings, generates electricity which is conducted to various accessories by a unique arrangement which allows the positive lead of an accessory to be plugged directly into the invention. The entire assembly is resistant to environmental hazards such as precipitation and salt spray. Easy lubrication injection for the ball bearings is provided.

Abstract: The disclosure concerns an anti-friction bearing with a specially formed ulder on its bushing. The bearing includes a shaft with two axially spaced raceways formed in it. Two outer races are associated with the respective raceways. A plurality of ball bearing elements are supported within the raceways. There are cages for guiding the balls in the races. The bushing is positioned between the two outer races. When the shaft is held vertically and the ball bearing elements are to be loaded in the top raceway, the shaft is tilted eccentrically of the outer race at the top to provide an enlarged crescent-shaped space between the inner raceway and the outer race to receive the balls. But, the balls fall down from that space. The bushing has a shoulder on one end which extends beneath the top outer race and near to the balls at that race. The shoulder is generally crescent-shaped and extends about 180.degree. around the bushing.