Convertible chair
AssigneePurdue Research Foundation
InventorsLeah Kenttamaa-Squires, Kyle Amick
Life of this patent
Estimating the term…
Abstract
A convertible chair with upright and reclined configurations is disclosed. Embodiments of the invention include a chair that collapses to form a dolly and expands to form a chair with upright and reclined seating configurations. Alternate embodiments include a base connected to a seat with a four bar linkage. In still further embodiments, one side of the four bar linkage is extended outside the pivoting joints, the extended portion being pivotally and slidingly engaged with the base. In other embodiments, the chair is configured to maintain the occupant's center of mass near the primary weight supporting pivot linkage.
Claims27
A chair, comprising:
- a seat including four seat members pivotally connected to one another at four seat pivot locations, the four seat pivot locations forming the vertices of a four bar linkage;
- a base pivotally connected to the seat at two base pivot locations, one of the base pivot connections being selectively securable to one of the four seat members at two or more locations along the length of the seat member;
- and
- two dolly wheels connected to the seat member to which the base pivot connection selectively secures.
A convertible chair for supporting a person, comprising:
- a base;
- a seat connected to the base, the seat including a seat bottom and a seat back;
- a wheeled member connected to the base;
- an upright configuration with the base configured to rest on a support surface with the seat bottom oriented approximately parallel to the support surface and the seat back oriented upright with respect to the support surface;
- a reclined configuration with the base configured to rest on the support surface with the seat back oriented approximately parallel to the support surface;
- and
- a dolly configuration with the seat and the base collapsed to form a cargo carrying surface offset from the support surface by the wheeled member;
- wherein the wheeled portion of the wheeled member is positioned behind the seat back in the upright configuration, and wherein the wheeled member moves forward when the chair transitions from the upright configuration to the reclined configuration.
A convertible chair for supporting a person, comprising:
- a base;
- a seat connected to the base, the seat including a seat bottom and a seat back;
- a wheeled member connected to the base;
- an upright configuration with the base configured to rest on a support surface with the seat bottom oriented approximately parallel to the support surface and the seat back oriented upright with respect to the support surface;
- a reclined configuration with the base configured to rest on the support surface with the seat back oriented approximately parallel to the support surface;
- a dolly configuration with the seat and the base collapsed to form a cargo carrying surface offset from the support surface by the wheeled member;
- and
- a pivoting linkage connecting the wheeled member and the base, the pivoting linkage slidingly engaging the wheeled member and being adjustable to selectively engage the wheeled member along a length of the wheeled member.
Dependencies are inferred from the claim text.