Bias mechanism for single shift shaft mechanical transmissions

Details Bias mechanism for single shift shaft mechanical transmissions Bias mechanism for single shift shaft mechanical transmissions

1998-03-17

2000-03-14

Bucci, David A.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

7447328, 74527, G05G 300

Patent

active

06035738&

ABSTRACT:
A bias mechanism includes a plunger secured within a bore extending in a generally tangential direction through a shift fork hub and intersecting a transverse aperture for mounting the hub on a shift shaft, the plunger having a portion protruding through the bore to selectively contact either the shift shaft or a shifting key or pin during rotation of the shift shaft, and a spring to provide resistance to movement of the plunger within the bore thereby causing rotational resistance to the shift shaft while eliminating axial resistance or drag during translation of the shift shaft. In one embodiment, the plunger contacts a shifting element fixed to the shift shaft, such as a shifting key or pin. In another embodiment, the plunger contacts the shift shaft directly but only during selection of the biased shift yoke for translation to engage a particular gear. The plunger preferably includes flats or conical portions which exert a force which tends to return the shift shaft to a neutral position within a first range of rotation, but maintains the position of the shift shaft within a second range of rotation.

REFERENCES:
patent: 2538653 (1951-01-01), Perkins
patent: 4222281 (1980-09-01), Mylenek
patent: 4278156 (1981-07-01), Yano et al.
patent: 4532823 (1985-08-01), Razzacki
patent: 4727765 (1988-03-01), Schneider
patent: 4920815 (1990-05-01), Reynolds
patent: 5285694 (1994-02-01), Chene
patent: 5297453 (1994-03-01), Chene
patent: 5517876 (1996-05-01), Genise et al.
patent: 5562011 (1996-10-01), Bartus
patent: 5737969 (1998-04-01), Brown et al.

Affiliated with

Also associated with

Rating

Bias mechanism for single shift shaft mechanical transmissions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bias mechanism for single shift shaft mechanical transmissions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bias mechanism for single shift shaft mechanical transmissions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-159438