Electric parking sprag
AssigneeChrysler Corporation
InventorsRichard G. Reed, Jr., Steven A. Barnhart
Life of this patent
Estimating the term…
Abstract
A parking sprag is provided for engaging a parking gear of an automotive transmission. The parking sprag includes a sprag mechanism pivotally mounted to a support structure. A linkage assembly operatively engages the sprag mechanism for pivoting the sprag mechanism into engagement with the parking gear. A linkage cam engaged with the linkage assembly and is driven by an electric motor. The electric motor drives the linkage cam which drives the linkage assembly in order to engage the sprag mechanism with the parking gear.
Claims9
A parking sprag for engaging a parking gear of an automotive transmission, comprising:
- a sprag mechanism pivotally mounted to a support structure;
- a linkage assembly operatively engaging said sprag mechanism for pivoting said sprag mechanism into engagement with the parking gear;
- a linkage cam engaged with said linkage assembly;
- and
- an electric motor coupled to said linkage cam;
- wherein said electric motor drives said linkage cam which drives said linkage assembly in order to engage said sprag mechanism with the parking gear.
A parking sprag for engaging a parking gear of an automotive transmission, comprising:
- a sprag mechanism pivotally mounted to a support structure;
- a linkage assembly operatively engaging said sprag mechanism for pivoting said sprag mechanism into engagement with the parking gear;
- a linkage cam engaged with said linkage assembly;
- an electric motor coupled to said linkage cam;
- a first switch associated with a shift lever for closing a circuit connected to said electric motor upon moving said shift lever to a predetermined position;
- and
- a second switch for opening said circuit when said electric motor rotates said linkage cam to a position corresponding to a parking sprag engaged position,
- wherein said electric motor drives said linkage cam which drives said linkage assembly in order to engage said sprag mechanism with the parking gear.
A parking sprag for engaging a parking gear of an automotive transmission, comprising:
- a sprag mechanism pivotally mounted to a support structure;
- a linkage assembly operatively engaging said sprag mechanism for pivoting said sprag mechanism into engagement with the parking gear, said linkage assembly having a pivot lever supporting a cam lever, said pivot lever being biased in a first direction in order to maintain said cam roller in engagement with said linkage cam, said pivot lever being further attached to an activation arm which engages said sprag mechanism;
- a linkage cam engaged with said linkage assembly;
- and
- an electric motor coupled to said linkage cam;
- wherein said electric motor drives said linkage cam which drives said linkage assembly in order to engage said sprag mechanism with the parking gear.
Dependencies are inferred from the claim text.