Patent ID: 6397700
Filing Date: 2002-06-04
Classification: B62K,B62M,Y10T

Abstract:
A dual dial rod speed changing indicator comprising:a base board; a wire hub seat acted on by a first bias force and pivoted to said base board, said wire hub seat having a first ratchet tooth portion and a second ratchet tooth portion, which are provided with a plurality of teeth; an advancing member comprising an advancing dial rod and an advancing ratchet pawl, said advancing dial rod being acted on by a second bias force and pivoted to said base board to swivel between a first position and a second position, said advancing ratchet pawl being acted on by a third bias force and pivoted to said advancing dial rod, said advancing dial rod being forced by an external force to swivel from the first position to the second position, said advancing ratchet pawl being acted on by the third bias force to mesh with a tooth of said first ratchet tooth portion so as to actuate said wire hub seat to overcome the first bias force to turn, said advancing dial rod being acted on by the second bias force to swivel from the second position to the first position at the time when the external force is removed; a withdrawing member comprising a locating ratchet pawl and a withdrawing dial rod, said locating ratchet pawl being acted on by a fourth bias force and pivoted to said base board to mesh with a tooth of said second ratchet tooth portion for locating said wire hub seat, said withdrawing dial rod having a push block and a locating tooth, said withdrawing dial rod being acted on by a fifth bias force and pivoted to said base board to swivel from a first position to a fourth position, said withdrawing dial rod being acted on by another external force to swivel from the third position to the fourth position, said push block resting on said locating ratchet pawl to force said locating ratchet pawl to move away from said second ratchet tooth portion, said locating tooth urging a tooth of said second ratchet tooth portion, said withdrawing dial rod being acted on by the fifth bias force to swivel from the fourth position to the third position at the time when the external force is removed, said wire hub seat being acted on by the first bias force to turn in reverse to withdraw, said locating ratchet pawl being acted on by the fourth bias force to mesh again with a tooth of said second ratchet tooth portion to locate said wire hub seat.