IT1072115B - Single piece bicycle hub - has one rim with thread, one with bearing track, several different diameter sprockets and free wheel facility
- Google Patents
Single piece bicycle hub - has one rim with thread, one with bearing track, several different diameter sprockets and free wheel facility
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Publication number
IT1072115B
IT1072115BIT6986776AIT6986776AIT1072115BIT 1072115 BIT1072115 BIT 1072115BIT 6986776 AIT6986776 AIT 6986776AIT 6986776 AIT6986776 AIT 6986776AIT 1072115 BIT1072115 BIT 1072115B
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Application filed by Shimano Industrial CofiledCriticalShimano Industrial Co
Application grantedgrantedCritical
Publication of IT1072115BpublicationCriticalpatent/IT1072115B/en
The single piece bicycle hub (1) has two rims (1a) (1b) to which the spokes are fitted. One rim (1b) has a thread (1c) on its inner surface and the other rim (1a) has a bearing track (1d). A shaft (10) is threaded at each end (10a) and is fixed to the bicycle frame by nuts (11) (12) (13) (14). A cylindrical part (2) is screwed to the rim thread (1c) and has an annular extension with two ball tracks (2b) (2c) and another with a single ball track. On the outer ball races runs another hollow hub (5) to which is fitted a sleeve carrying a number of chain sprockets (6) of different diameters. A freewheel facility is also provided.
IT6986776A1975-12-021976-12-01Single piece bicycle hub - has one rim with thread, one with bearing track, several different diameter sprockets and free wheel facility
IT1072115B
(en)
Freewheel and hub assembly for bicycle - has internal toothed gear engaged by pawls and several different dia. sprockets retained by outer sprocket which is screwed onto hub