Quick release coupling for the crank of a bicycle drive train
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 14, 2015
Grant Date -
Feb 19, 2015
app pub date -
Aug 13, 2013
filing date -
Aug 13, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A quick release coupling is incorporated into the drive train of the bicycle to couple the crank to the drive shaft. It includes an axle with a flat keyway facilitating installation. A crank arm has an opening matching the circumference of the shaft other than at the flat area. The opening includes a protrusion engaging the keyway to transmit torque. A land is near an end of the shaft. Each coupling has an opening similar to the opening through each crank arm. The orientation of the coupling is with the flat region aligned with the keyway. In this orientation, the coupling is slid over the end of the shaft until the flat area is aligned over the land. The coupling may be rotated until the flat area is misaligned with the keyway and within the land. In this position, the crank arm is locked.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully