Adjustable chair
OwnerYao-Chuan Wuinventor
Life of this patent
Estimating the term…
Abstract
An adjustable chair has a seat and a splat. The seat has a lower base, an upper base, a tilt adjusting device, a lower rotating shaft, and an upper rotating shaft. The lower base has an assembling space. The upper base is movably deposited on the lower base. The tilt adjusting device is deposited in the assembling space. The lower rotating shaft is rotatably deposited in the lower base and connected to the tilt adjusting device. The upper rotating shaft is deposited in the upper base. The splat is tiltably connected to the seat and has a backrest unit and two connecting legs. The backrest unit is deposited at a rear side of the seat. The connecting legs are connected to the backrest unit, are connected to the lower rotating shaft, and are pivotally connected to the upper rotating shaft.
Claims8
An adjustable chair comprising:
- a seat having
- a lower base having
- a closed bottom;
- an open top;
- a front side;
- a rear side;
- two opposite sides;
- and
- an assembling space formed in the lower base and communicating with the open top of the lower base;
- an upper base movably deposited on the lower base to cover the open top of the lower base and having two opposite sides;
- a lower rotating shaft rotatably deposited in the lower base adjacent to the rear side of the lower base, and having two outer ends respectively extending out of the two opposite sides of the lower base;
- a tilt adjusting device deposited in the assembling space of the lower base, connected to the lower base, and having
- a locking frame mounted in the lower base, connected securely with the lower rotating shaft, and having
- two rear ends connected securely to the lower rotating shaft to enable the locking frame to rotate with the lower rotating shaft;
- a front side;
- and
- multiple locking holes formed through the front side of the locking frame at spaced intervals between the lower base and the upper base;
- a latch retractably deposited in the lower base in the front of the locking frame and selectively engaging one of the locking holes of the locking frame;
- a rope connected to the latch opposite to the front side of the locking frame and extending out of the lower base;
- and
- a spring deposited in the lower base, mounted around the rope, and having two ends respectively connected to the lower base and the latch;
- and
- an upper rotating shaft deposited in the upper base, being parallel with the lower rotating shaft, and having two outer ends respectively extending out of the two opposite sides of the upper base;
- and
- a splat tiltably connected to the seat and having
- a backrest unit deposited at a rear side of the seat and having two bottom ends;
- and
- two connecting legs respectively connected to the bottom ends of the backrest unit, and each one of the connecting legs securely connected to the lower rotating shaft, pivotally connected to the upper rotating shaft at one of the two opposite sides of the lower base, and having a connecting segment extending upwardly to the seat.
Dependencies are inferred from the claim text.