Camber tube level
AssigneeSunrise Medical HHG Inc.
InventorPhilip Schreiber
Life of this patent
Estimating the term…
Abstract
A level on a wheelchair allows the cambered rear wheels to be easily adjusted to eliminate toe-in/toe-out. The level comprises a ball encased in a curved track. The curve track is formed in a clear housing that mounts to the underside of a wheelchair camber tube or wheel axle. The camber tube or wheel axle is rotated until the ball aligns with an indicator mark indicating that toe-in/out has been eliminated from the cambered wheels.
Claims18
A level indicator that mounts to a wheelchair camber tube or rear wheel axle comprising a track and a ball, wherein the ball is adapted to travel along the track and settle to a given low point on the track due to gravity.
A level indicator that mounts to a wheelchair camber tube or rear wheel axle comprising a track and a displaceable element that is adapted to travel along the track and settle to a given low point on the track due to gravity.
A level indicator that mounts to the underside of a wheelchair camber tube or rear wheel axle comprising a clear vial containing a material that resides inside the vial, wherein the material is adapted to travel inside the vial and settle to a given low point on the vial due to gravity.
A level indicator that mount to a wheelchair camber tube or rear wheel axle comprising a clear vial containing two liquids of differing density that do not intermix, one liquid being clear in appearance and the other liquid being opaque in appearance, wherein the denser liquid settles to a given low point along the vial due to gravity.
Dependencies are inferred from the claim text.