Bearing assembly for bicycle parts

A bicycle bearing assembly has a spindle rotatably coupled within an outer tubular member via bearing members. The spindle preferably has a pair of annular grooves, which are formed in its outer surface by cold rolling the spindle. Similarly, the tubular outer member is cold rolled to form a pair of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OHTSU, TOMOHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	AXLES FOR WHEELS OR CASTORS BEARINGS BLASTING CASTORS CYCLES ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING INCREASING WHEEL ADHESION LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS POWERED PROPULSION OF SLEDGES OR RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES TRANSPORTING VEHICLE WHEELS VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A bicycle bearing assembly has a spindle rotatably coupled within an outer tubular member via bearing members. The spindle preferably has a pair of annular grooves, which are formed in its outer surface by cold rolling the spindle. Similarly, the tubular outer member is cold rolled to form a pair of corresponding annular grooves in its internal surface. The cold rolling process of forming the tubular outer member results in its external surface also deformed to create a similar corresponding profile to the internal surface. This cold rolling creates a very smooth bearing surface for the bearing members. In one embodiment, the bicycle bearing assembly is a bottom bracket for a bicycle. In other embodiments, the bicycle bearing assembly is a hub for a wheel bicycle. The hub can be either a front hub or a rear hub.