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US 5,882,079 AGranted
Structure of back cushion for leisure
AssigneeFormosa Saint Jose Corp.
InventorMing-Shun Yang
Life of this patent
Estimating the term…
Abstract
An adjustable backrest is reinforced by a fixed frame that fits snugly into upper and lower bags affixed to the rear surface of the backrest cushion. One of the bags has a zipper assembly that can be operated to open the bag for easy insertion of the frame into the bag. A swingable support frame is hingedly connected to the fixed frame to support the backrest cushion at various different slant angles.
Claims6
An adjustable backrest comprising a yieldable back support cushion having an upper edge, lower edge and rear surface;
- an upper bag on the cushion rear surface proximate to the cushion upper edge;
- said upper bag having a downwardly open mouth;
- a lower bag on the cushion rear surface proximate to the cushion lower edge;
- said lower bag having an upwardly open mouth;
- a fixed frame having an upper section thereof inserted into the upper bag, and a lower section thereof inserted into the lower bag;
- a movable support frame hingedly connected to said fixed frame for swinging motion around a horizontal axis, to adjust the slant angle of the back support cushion;
- and
- flexible cable means trained between the fixed frame and movable frame to prevent frame collapse;
- said cable means having an adjustable anchorage on the movable frame to vary the angulation of the two frames.
6 more elements
Dependencies are inferred from the claim text.