Chairs and seats – Movable bottom – Movable independently of back
Reexamination Certificate
1998-10-19
2001-08-07
Cranmer, Laurie K. (Department: 3636)
Chairs and seats
Movable bottom
Movable independently of back
C482S096000, C482S130000
Reexamination Certificate
active
06270159
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a manual uplift apparatus. More particularly, the present invention relates to a sitting device from which the user may manually uplift themselves from a seated position to a point where a standing position may be more easily obtained. The device may also be used as an exercise device for upper body workouts.
2. Description of the Prior Art
Sitting devices designed to assist the user in obtaining a standing position from a previous seated position are known in the art. Conventionally, these sitting devices are relatively expensive, bulky, and weighty, making them difficult to move from place to place. Further, many of these devices use electrical power to uplift the user, therefore requiring proximity to electrical outlets, or the extra weight of batteries.
U.S. Pat. No. 459,282 to Gollon discloses an exercise apparatus which has a frame unit, uplift assembly, vertical support members, structural pulleys, guide elements, a seat member, rail members, a cable member, and a back support. The arrangement and interaction of these elements and the resultant device is unrelated to the present invention.
U.S. Pat. No. 2,788,527 to Steven discloses a bathtub which can be electrically raised and lowered between two walls using rollers and attached mercerized canvas.
U.S. Pat. No. 2,850,075 to Wilson discloses an invalid chair including a vertically adjustable carriage assembly. This carriage assembly is raised and lowered between supports through the use of a sling, which can be lengthened or shortened using power means and a crank.
U.S. Pat. No. 4,034,426 to Hardwick et al. discloses a mechanical bathtub lift chair apparatus wherein the user rocks the chair to elevate the seat through a ratchet system.
U.S. Pat. No. 4,888,833 to Garcia et al. discloses a cart for positioning a body on a toilet, having hydraulic means for lifting and lowering a seating means.
U.S. Pat. No. 4,907,303 to Baird discloses an orthopedic chair with a spring-loaded pivoting seat.
U.S. Pat. No. 4,929,022 to Geraci discloses a chair, with a spring-loaded pivoting seat, having a lifting means comprised of handle bars and a foot operated lever member. U.K. Patent GB 1,435,559 discloses a chair including a motorized seat, which can be raised and lowered without tilting relative to the base.
Published U.K. Patent Application GB 2,183,150A discloses a chair including a seat which tilts forward when actuated by the user through pivotally attached tilting means.
None of the above inventions and patents, taken either singly or in combination, is seen to describe the instant invention as claimed.
SUMMARY OF THE INVENTION
The present invention comprises a manualal uplift apparatus which includes a sitting device from which the user is uplifted from a seated position by pushing downward upon a set of rails or hand engagement handles, producing downward motion of said rails or hand engagement handles. This downward motion creates upward motion in a seat support member, to achieve a raised position. This raised seat position allows the user to more easily achieve an upright standing position. Also, the design of the apparatus may be such that the downward movement of the seat produces upward movement in the hand engagement handles.
Accordingly it is a principal object of the invention to provide a mechanical user-powered seat uplift apparatus that may be easily operated by persons who normally have difficulty in standing from seated position. It is another object of the invention to provide an upper body workout routine, such that the device may be used as an exercise product.
These and other objects of the present invention will become readily apparent upon further review of the following specification and drawings.
REFERENCES:
patent: 459282 (1891-09-01), Gollon
patent: 2788527 (1957-04-01), Steven
patent: 2850075 (1958-09-01), Wilson
patent: 3233868 (1966-02-01), Harvey et al.
patent: 4034426 (1977-07-01), Hardwick et al.
patent: 4888833 (1989-12-01), Garcia et al.
patent: 4907303 (1990-03-01), Baird
patent: 4929022 (1990-05-01), Geraci
patent: 5303982 (1994-04-01), Johnston
patent: 5445431 (1995-08-01), Johnston
patent: 5468049 (1995-11-01), Johnston
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