Crank axle unit for a bicycle

Machine element or mechanism – Elements – Cranks and pedals

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

745941, 280259, G05G 114

Patent

active

052438791

ABSTRACT:
A crank axle unit mounted in a bottom bracket assembled to a bicycle frame, which crank axle unit has a tubular element surrounding and rotatably supporting a crank axle, the tubular element being surrounded by the bottom bracket, and a first screw ring and a second screw ring screwed into opposite ends of the bottom bracket for positioning and fixing the tubular element in the bottom bracket. The first screw ring is fitted on an outside wall in one end region of the tubular element, and includes a threaded portion for screwing to an inside wall in one end region of the bottom bracket, and tool engaging teeth provided on an inside wall at an outward end of the first screw ring. The second screw ring is fitted on an outside wall in the other end region of the tubular element, and includes a threaded portion for screwing to an inside wall in the other end region of the bottom bracket, and tool engaging teeth provided on an inside wall at an outer end of the second screw ring. The engaging teeth of the two screw rings are arranged at different pitches, but are engageable with the same tool.

REFERENCES:
patent: 3578829 (1971-05-01), Hata
patent: 3903754 (1975-09-01), Morroni
patent: 4093325 (1978-06-01), Troccaz
patent: 4545691 (1985-10-01), Kastan et al.
patent: 4576503 (1986-03-01), Drain
patent: 4651590 (1987-03-01), Thun
patent: 5024121 (1991-06-01), Hsieh

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Crank axle unit for a bicycle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Crank axle unit for a bicycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crank axle unit for a bicycle will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2020142

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.