Patent ID: 8851502

Claim:
A lockable walker comprising: a walker having a left frame assembly having a bottom end and a top end, operatively connected at its bottom end to a front wheel and to a rear wheel, a right frame assembly having a bottom end and a top end, operatively connected at its bottom end to a front wheel and to a rear wheel, and at least one support member connecting said left frame assembly to said right frame assembly; a seat mounted between said left frame assembly and said right frame assembly; said left frame assembly including a generally tubular left front leg having a pre-determined outer diameter and a generally tubular left rear leg, said left rear leg rotatably connected to a left leg extension and said left leg extension connected to said left front leg near said left frame top end; said right frame assembly including a generally tubular right front leg having a predetermined outer diameter and a generally tubular right rear leg, said right rear leg rotatably connected to a right leg extension and said right leg extension connected to said right front leg near said right frame top end; said left leg extension having a first end connected to said left front leg, a pivot end rotatably connected to said left rear leg and a predetermined length; and, a lock comprising a base and a projection extending at an angle of about 90° from said base; said base including a U-shaped end having a closed end and an open end with two legs, said closed end having a radius equal to or slightly greater than one-half of the pre-determined outer diameter of any one of said left front leg, said right front leg, said left rear leg or said right rear leg, and said open end having a distance between said two legs that is less than the predetermined outer diameter of any one of said left front leg, said right front leg, said left rear leg or said right rear leg; wherein said lock further comprises a shoulder extending from the base at an angle of about 180° from said base, said base having a pre-determined height and said shoulder having a height less than said pre-determined height of said base and, said lock movably retained on any one of said left front leg, said right front leg, said left rear leg or said right rear leg.