Tricycle crank structure
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United States of America Patent
Stats
-
Jul 10, 2007
Grant Date -
Mar 8, 2007
app pub date -
Aug 24, 2005
filing date -
Aug 24, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tricycle crank structure comprises a wheel axle, a pair of cranks and a pair of pedals. The wheel axle is provided with a pair of non-circular sectional holes at respective ends. The inner wall of each hole is provided with a recess. Each crank has one end pivotally connected to the pedal and another end provided with a connecting section. The connecting section is provided with a tenon to engage with the recess of the hole for quick mounting and dismounting. Each hole may be provided with a pair of through holes, and each crank is provided with an elastic clip for connection.
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