Patent ID: 9545354
Date: 2017-01-17
CPC Classifications: A61H,F16B

Claim:
1. A hydraulically adjustable walker comprising: a frame having a front and two sides, the frame formed by four legs and connecting bars that connect one leg with an adjacent leg, each leg being length-adjustable and having at least an upper section having a first diameter and a lower section having a second diameter that is larger than the first diameter adjustably coupled to the upper section, each leg further comprising a middle section placed between the upper section and lower section, the middle section having a third diameter that is larger than the first diameter and smaller than the second diameter, and wherein the middle section is adjustably coupled on the upper section and the lower section is adjustably coupled on the middle section; and a fluid delivery system that includes a one or more tubes that extend through the frame and into the four legs and one or more valves; wherein the tubes are filled with hydraulic fluid and wherein closing the valves prevents the fluid from moving and keeps the legs at a fixed length; wherein the lower section is slidably movable on the upper section; wherein fluid flowing into the middle and lower sections forces at least the lower section to extend downward from the middle section; and wherein opening the valves allows the fluid to move throughout the tubes selectively from front legs to back legs or from one pair of side legs to the other pair of side legs, thereby allowing the user to adjust the length of the legs by applying pressure to a portion of the frame to shorten one or more of the legs and lengthen one or more of the legs.