Control mechanism for power shift transmission

Claim 2

A control linkage system, said system comprising: a control lever pivotally mounted for two degrees of pivotal movement relative to its longitudinal axis; a single control member mounted to move between two extreme positions; and, means for selectively connecting said control lever to said single control member to move said single control member in a first direction in response to movement of said control lever in one direction in a first path and for movement of said control member in the opposite direction in response to movement of said control lever in a second path in said one direction.

Claim 3

The invention of claim 1 wherein said connecting means comprises a pair of pivotally mounted bell cranks; and, said control lever is mounted to operatively connect to one of said bell cranks in one path of movement, and to connect to the other of said bell cranks in the other path of movement.

Claim 4

The invention of claim 1 including guide means to guide said lever in a substantially U-shaped pattern.

Claim 5

The invention of claim 1 said connecting means comprising a pair of arms pivotally mounted for movement about an axis common with one axis of said control lever; said connecting means including a link for connecting said arms to said control member; and, said connecting means including yoke means for connecting said control lever to alternate ones of said arms when said lever is shifted between first and second paths.

Claim 6

A shift linkage mechanism, said mechanism comprising: a shift lever mounted for pivotal movement about a first and a second axis; a pair of arms pivotally mounted about said first axis adjacent said lever; said lever including means for selectively moving either one of said arms with said lever when said lever is moved first about said second axis and then about said first axis; a shift member; and, a pair of links connecting said arms to said shift member.

Claim 7

A shift linkage mechanism, said mechanism comprising: a shift lever mounted for pivotal movement about a first and a second axis; a pair of arms pivotally mounted about said first axis adjacent said lever; said lever including means for selectively moving either one of said arms with said lever when said lever is moved first about said second axis and then about said first axis; a shift member; and, a pair of links connecting said arms to said shift member.

Claim 8

The invention of claim 5 wherein said arms extend in opposite directions about said axis.

Claim 9

A shift linkage mechanism, said mechanism comprising: a shift lever mounted for pivotal movement about a first axis, and a second axis transverse to and spaced from said first axis; a pair of arms pivotally mounted about said first axis and disposed adjacent and to either side of said lever; said lever including yoke means for selectively embracing and moving either one of said arms with said lever when lever is moved first about said second axis and then about said first axis; guide means defining a generally U-shaped configuration to guide said lever in selected parallel paths; said lever being connected to one of said arms when moving in one of said paths, to the other of said arms when moving in the other of said paths, and to both of said arms when in a neutral position between said paths; and linkage means operatively connecting said arms to a control member, said linkage means and one of said arms including sector gear means for changing the direction of motion transmitted from said shift lever to said control member.

Claim 10

A shift linkage mechanism, said mechanism comprising: a shift lever mounted for pivotal movement about a first axis, and a second axis transverse to and spaced from said first axis; a pair of arms pivotally mounted about said first axis and disposed adjacent and to either side of said lever; said lever including yoke means for selectively embracing and moving either one of said arms with said lever when lever is moved first about said second axis and then about said first axis; guide means defining a generally U-shaped configuration to guide said lever in selected parallel paths; said lever being connected to one of said arms when moving in one of said paths, to the other of said arms when moving in the other of said paths, and to both of said arms when in a neutral position between said paths; and linkage means operatively connecting said arms to a control member, said linkage means and one of said arms including sector gear means for changing the direction of motion transmitted from said shift lever to said control member.

Claim 11

A shift linkage mechanism, said mechanism comprising: a shift lever mounted for pivotal movement about a first axis and a second axis transverse to and spaced from said first axis; a pair of arms pivotally mounted about said first axis and disposed adjacent and to either side of said lever; said lever including yoke means for selectively embracing and moving either one of said arms with said lever when lever is moved first about said second axis and then about said first axis; guide means defining a generally U-shaped configuration to guide said lever in selected parallel paths; said lever being connected to one of said arms when moving in one of said paths, to the oTher of said arms when moving in the other of said paths, and to both of said arms when in a neutral position between said paths; and, each of said arms includes a pin at one end thereof extending toward said yoke means to be encompassed and engaged thereby.

Claim 12

A shift linkage mechanism, said mechanism comprising: a shift lever mounted for pivotal movement about a first axis and a second axis transverse to and spaced from said first axis; a pair of arms pivotally mounted about said first axis and disposed adjacent and to either side of said lever; said lever including yoke means for selectively embracing and moving either one of said arms with said lever when lever is moved first about said second axis and then about said first axis; guide means defining a generally U-shaped configuration to guide said lever in selected parallel paths; said lever being connected to one of said arms when moving in one of said paths, to the oTher of said arms when moving in the other of said paths, and to both of said arms when in a neutral position between said paths; and, each of said arms includes a pin at one end thereof extending toward said yoke means to be encompassed and engaged thereby.