B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
B25B 13/46 (2006.01)
Patent
CA 2313397
A ratchet wheel includes an outer periphery. The outer periphery includes a number of arcuate concave teeth each having two sides and an intersection of the two sides. The ratchet wheel includes a center, a line from the center to the intersection dividing an angle between the two sides into two unequal portions, thereby forming asymmetric arcuate concave teeth to provide improved structural strength and improved torque. In another embodiment, the concave teeth are non-arcuate to reduce the formation time for the teeth, thereby reducing the production cost.
Bull Housser & Tupper Llp
Hu Bobby
LandOfFree
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