Chair control device
OwnerIng Kwainventor
Life of this patent
Estimating the term…
Abstract
A mechanism is provided for an office chair to adjust the tilt of the seat portion relative to the base of the chair. The mechanism includes an adjustable member tiltably mounted on a base, a compression spring bearing on the adjustable member and connected to the base using a retaining bolt running through the center of the compression spring, and a clutch device fixably attached to the base extending to the adjustable member, which clutch device is capable of holding the adjustable member in a fixed position relative to the base.
Claims31
An adjustment mechanism for a chair, the mechanism comprising:
- a base;
- an adjustable member tiltably mounted on the base and moveable between a first position and a second position;
- a compression spring bearing on the adjustable member which urges the adjustable member toward the first position when compressed;
- and
- a clutch attached to the base and the adjustable member capable of engaging to hold the adjustable member in a fixed position relative to the base between or including the first position and the second position.
An adjustment mechanism for a chair, the mechanism comprising:
- a base;
- an adjustable member tiltably mounted on the base and moveable between a first position and a second position;
- an elastic element bearing on the adjustable member which urges the adjustable member toward the first position when deformed;
- and
- a clutch comprising a clutch lever mounted on the base and a clutch assembly attached to the adjustable member,
- wherein the clutch assembly connects the clutch lever and the adjustable member, and
- wherein the clutch is capable of engaging to hold the adjustable member in a fixed position relative to the base between or including the first position and the second position.
An adjustment mechanism for a chair, the mechanism comprising:
- a base comprising a first central plate and a first pair of sidewalls extending substantially perpendicularly downward from the first central plate, the first pair of sidewalls being substantially parallel to one another;
- an adjustable member tiltably mounted on the base below the first central plate moveable between a first position and a second position;
- an elastic element provided below the adjustable member and the first central plate of the base which bears on the adjustable member and urges the adjustable member toward the first position when deformed;
- and
- a clutch attached to the base and the adjustable member capable of engaging to hold the adjustable member in a fixed position relative to the base between or including the first position and the second position.
An adjustment mechanism for a chair, the mechanism comprising:
- a base comprising a first central plate and a first pair of sidewalls extending substantially perpendicularly downward from the first central plate, the first pair of sidewalls being substantially parallel to one another;
- an adjustable member moveable between a first position and a second position which is tiltably mounted on the base, and which comprises a second central plate, a column mount and a second pair of sidewalls extending substantially perpendicularly downward from the second central plate to the column mount, the second pair of sidewalls being substantially parallel to one another;
- an elastic element bearing on the adjustable member which urges the adjustable member toward the first position when deformed;
- and
- a clutch attached to the base and the adjustable member capable of engaging to hold the adjustable member in a fixed position relative to the base between or including the first position and the second position.
Dependencies are inferred from the claim text.