Gear-shifting device for manual transmission

Details Gear-shifting device for manual transmission Gear-shifting device for manual transmission

2004-06-28

2008-09-23

Ridley, Richard W L (Department: 3682)

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

C074S473370

Reexamination Certificate

active

07426882

ABSTRACT:
A gear-shifting device50for a manual transmission comprises a shift arm53, which is rotatable in correspondence to the shift operation of a change-lever L, and shift pieces41, 43and45, each of which shifts in correspondence to the rotation of the shift arm53, with this shifting of the shift piece41achieving a gear shift. The gear-shifting device50further comprises a load-attenuating mechanism90, which includes a spline groove51b, a fitting room91, a steel ball92and a coned spring93. In the attenuating mechanism, the steel ball92is pushed to the spline groove51bby the coned spring93, allowing the shift arm53to rotate with respect to the shift selector shaft51to reduce the load acting on the change-lever L from synchro-sleeves71, 73and75.

REFERENCES:
patent: 3780596 (1973-12-01), Takahashi et al.
patent: 4338828 (1982-07-01), Ruhlman
patent: 4916966 (1990-04-01), Weishaupt et al.
patent: 6658959 (2003-12-01), Wildeshaus et al.
patent: 6-316227 (1994-11-01), None
patent: 2000-240683 (2000-09-01), None
Shoji Kato et al., Non-patent document, “Study on the prevention of 2-step motion in a gear change of manual transmission” pp. 33-38.

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