Lumbar support adjustment mechanisms
AssigneeExemplis LLC
InventorsBrett Joseph Rogers, Ken-Soh Mai, Yoshimi Yamamoto, Matthew J. Gerules
Life of this patent
Estimating the term…
Abstract
A lumbar support adjustment system for a chair that allows a user to adjust the lumbar support by moving a handle on the side of the chair back. The lumbar support and handle move along separate tracks that diverge from each other as the lumbar support is adjusted upward. To compensate for this divergence, the system includes a linkage with a joint connected to the handle and another joint connected to the lumbar support. As the lumbar support is adjusted, the linkage and joint system accommodates for the divergence of the tracks to continue transmitting force from the handle to adjust the lumbar support.
Claims30
A chair comprising:
- legs connected to a seat;
- a chair back connected to the seat;
- a lumbar support that is engaged with a first track, wherein the lumbar support follows and travels along the first track, and the first track is oriented vertically on the chair back, the lumbar support engaged with the first track to only allow translational movement of the lumbar support with respect to the first track;
- a handle that is engaged with a second track wherein the first track diverges from the second track, the handle engaged with the second track to only allow translational movement of the handle with respect to the second track;
- a lumbar-side linkage retainer connected to the lumbar support;
- a handle-side linkage retainer is connected to the handle;
- and
- a linkage with a lumbar joint and a handle joint, and wherein the lumbar joint is connected to the lumbar-side linkage retainer and the handle joint is connected to the handle-side linkage retainer wherein the lumbar joint and handle joint are configured to individually permit rotational movement but not translational movement.
A lumbar support adjustment system for a chair comprising:
- a lumbar support that is engaged with a first track that follows and travels along a first path that is oriented vertically along a chair back, the lumbar support engaged with the first track to only allow translational movement of the lumbar support with respect to the first track;
- a handle engaged with a second track that follows a path that diverges from the first path, the handle engaged with the second track to only allow translational movement of the handle with respect to the second track;
- a linkage with a lumbar joint and a handle joint, wherein the lumbar joint is connected to the lumbar support and the handle joint is connected to the handle wherein the lumbar joint and handle joint are individually configured to permit rotational movement but not translational movement.
The lumbar support adjustment system of 6, wherein the lumbar joint is an open ring joint.
A lumbar support adjustment system for a chair comprising:
- a lumbar support that is engaged with a first track that follows and travels along a first path that is oriented vertically along a chair back, the lumbar support engaged with the first track to only allow translational movement of the lumbar support with respect to the first track;
- a handle that is engaged with a second track that follows a second path near an edge of the chair back and wherein the second path diverges from the first path, the handle engaged with the second track to only allow translational movement of the handle with respect to the second track;
- a linkage with a lumbar joint and a handle joint, and wherein the lumbar joint is connected to the lumbar support and the handle joint is connected to the handle, wherein the lumbar joint and handle joint are individually configured to permit rotational movement but not translational movement.
Dependencies are inferred from the claim text.