Other

Aaron Dejule

Scott Padiak

Paul C Evans

A chair, comprising, a backrest, a seat coupled with the backrest, a column coupled with the seat, a linkage statically attached to the backrest and rotatably attached below the seat, a leaf spring statically attached at one end and in direct contact with the linkage to provide a resistance to tilting of the backrest relative to the column. A first structure fixed to the column, where a portion of the first structure has an arc shape that includes one or more teeth, and a second structure in contact with the first structure, wherein a portion of the second structure includes one or more teeth. The chair is configured such that, when a weight is applied to the seat, the one or more teeth of the second structure, a pivot point at which the backrest is configured to tilt relative to the column, and the linkage are configured to move together.

Chair including a leaf spring in contact with a linkage to provide resistance to tilting of a backrest of the chair

A human support structure has: at least one support against which at least one part of a human body is borne; a base; a first motion transmitting assembly having first and second link members joined to each other and two components for pivoting movement around separate axes and defining a first unit; and a second motion transmitting assembly having third and fourth link members and two components joined together for pivoting movement around separate axes and defining a second unit. The first and second motion transmitting assemblies guide relative movement between the at least one support and the base. The first and second units can be selectively repositioned to change how relative movement between the at least one support and base is guided.

Human support structure

A chair, comprising, a backrest, a seat coupled with the backrest, a column coupled with the seat, a linkage statically attached to the backrest and rotatably attached below the seat, a leaf spring statically attached at one end and in contact with the linkage to provide a resistance to tilting of the backrest relative to the column, a first structure. A portion of the first structure has an arc shape that includes one or more teeth, and a second structure in contact with the first structure. The chair is configured such that, when a weight is applied to the seat, one or more teeth of the second structure move along the one or more teeth of the first structure to provide an increased resistance to tilting of the backrest relative to the column.

Chair having a leaf spring in contact with a linkage to provide a resistance to tilting of a backrest of the chair relative to a column of the chair

A chair, comprising, a backrest, a seat coupled with the backrest, a column coupled with the seat, a linkage statically attached to the backrest and rotatably attached below the seat, a leaf spring statically attached at one end and in direct contact with the linkage to provide a resistance to tilting of the backrest relative to the column, a first structure fixed to the column. A portion of the first structure has an arc shape that includes one or more teeth, and a second structure in contact with the first structure. The chair is configured such that, when a weight is applied to the seat, one or more teeth of the second structure move along the one or more teeth of the first structure to shorten a working length of the leaf spring and provide an increased resistance to tilting of the backrest relative to the column.

Chair having a leaf spring with a working length that shortens to increase resistance to tilting of a backrest relative to a column

Chair having at least three different components that move together when a weight is applied to the seat, the chair also including a leaf spring in direct contact with the linkage to provide resistance to tilting of a backrest of the chair

Growing community of inventors

River Forest, IL, United States of America

Aaron Dejule