|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||135/067; 297/005; 135/075; 482/068|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 19 인용 특허 : 13|
A stair walker device for aiding ambulatory persons in ascending ad descending stairs, ramps and other uneven walkable surfaces. A pair of hand-controlled levers used separately or together to adjust the front legs, by controlling the extension or retraction of a pair of front leg portions. The rear legs are adjusted for the user's height once only by suitable adjustable fastening. The sides of the stair walker frame can be readily folded for storage or for carrying.
1. A folding walker aid apparatus comprising:a pair of tubular P-shaped frame elements, wherein each frame element comprises a horizontal top portion having a grip, a vertical front portion containing apertures designed to accept a cotter pin, and a vertical rear leg sleeve portion having a series of aligned apertures adapted to accept a spring-loaded button contained inside the top of each rear leg; a tubular U-shaped frame element having an upper horizontal curvilinear crossbar, a lower horizontal curvilinear crossbar, and two vertical front leg portio...