Brake and transmission shift locks with single control lever

Claim 2

A transmission shift lock and parking brake arrangement for a vehicle including a brake pedal depressible to a brake actuated position and a transmission shift lever movable in a predetermined direction from a neutral position to at least one gear speed position, said arrangement comprising a pivotal ratchet coupled to said brake pedal, said ratchet being rotatable in a firSt direction responsive to depression of said pedal and rotatable in a second opposite direction responsive to release of said pedal, a pawl pivotal between a first position disengaged from said ratchet and a second position engageable therewith to prevent movement thereof in said second direction, means normally spring loading said pawl to said second position, an operating lever pivotal between an ''''off'''' position and an ''''on'''' position, a linkage coupling said operating lever to said pawl for effecting pivotal movement thereof between said first and second positions responsive to pivotal movement of said operating lever between said ''''off'''' and ''''on'''' positions, a pivotal stop member movable between a first position unobstructing to movement of said shift lever and a second position obstructing movement of said shift lever from said neutral position in said predetermined direction, and a second linkage coupling said operating lever to said stop member for effecting pivotal movement of the latter between said first and second positions thereof responsive to pivotal movement of the former between said ''''off'''' and ''''on'''' positions thereof.

Claim 3

The combination of claim 1, further defined by said stop member having an associated overcenter spring for resiliently retaining said stop member in both of said first and second positions thereof, whereby said overcenter spring retains said operating lever in both of its ''''off'''' and ''''on'''' positions.

Claim 4

The combination of claim 1, further defined by said operating lever having a pivot shaft with a bell crank secured thereto for rotation therewith, said crank having first and second substantially right-angularly related arms, said first linkage comprising a first lever pivotally mounted at a point spaced from a first end thereof for rotation about said pivot shaft, said lever having a right-angularly turned lip at said first end thereof engageable by said first arm of said crank upon rotation of said operating lever in a first direction towards said ''''off'''' position and engageable by said second arm of said crank upon rotation of said operating lever in a second opposite direction towards said ''''on'''' position, a second lever pivotally mounted at an intermediate position thereof, a rod coupling a second end of said first lever opposite said first end thereof to a first end of said second lever to effect rotation thereof responsive to rotation of said operating lever and in the same rotational direction thereas, and a second rod coupled to the opposite second end of said second lever, said pawl having a first arm defining a dog engageable with said ratchet and a second arm angularly related to said first arm of said pawl, said second rod coupled to said second arm of said pawl to effect rotation thereof in response to and in the same rotational direction as said second lever, said pawl being pivoted in said first rotational direction towards said first position thereof and in said second rotational direction towards said second position thereof.

Claim 5

The combination of claim 3, further defined by said stop member having an associated overcenter spring for resiliently retaining said stop member in both of said first and second positions thereof, whereby said overcenter spring retains said operating lever in both of its ''''off'''' and ''''on'''' positions.

Claim 6

The combination of claim 4, further defined by said stop member being of U-shaped configuration having the ends of its parallel side legs mounted for rotation about a fixed pivot axis, said overcenter spring being secured between a fixed anchor point and one side leg of said stop member at a position displaced from said pivot axis thereof, said stop member being pivotal in said second rotational direction towards said first position thereof and pivotal in said first rotational direction towards said second position thereof, said second linkage comprising a third arm secured to said pivot shaft of said operating lever at a position angularly intermediate said first and second crank arms for rotation therewith, and a link coupled between said third arm and a side leg of said stop member at a point intermediate said pivot axis thereof and the position of connection of said overcenter spring thereto to urge said stop member in said second rotational direction responsive to pivotal movement of said operating lever in said first rotational direction and urge said stop member in said first rotational direction responsive to pivotal movement of said operating lever in said second rotational direction.

Claim 7

The combination of claim 2, further defined by said stop member being of U-shaped configuration having the ends of its parallel side legs mounted for rotation about a fixed pivot axis, said overcenter spring being secured between a fixed anchor point and one side leg of said stop member at a position displaced from said pivot axis thereof, said second linkage comprising a link coupled between said operating lever and a point of a side leg of said stop member intermediate said pivot axis thereof and the position of connection of said overcenter spring thereto.