Patent ID: 9596936
Date: 2017-03-21
CPC Classifications: A47C

Claim:
1. A seating device, comprising: a seat; a post positioned below and attached to the seat; a base positioned below and attached to the post; an inflatable bladder positioned below and attached to the base; sensing electronics configured to sense orientation of the seating device and provide orientation data to a remote computing device; and a guard attached to the base, the guard comprising a cylindrical wall centered on a longitudinal axis of the post and extending downward from the base at a position spaced radially outward from the inflatable bladder, the guard having a lower edge located above a bottom of the inflatable bladder and configured to inhibit tipping of the seat to no more than ten degrees from horizontal; wherein the inflatable bladder comprises a complete spherical dome, wherein when the inflatable bladder is filled, a tangent line to the inflatable bladder intersects the lower edge and forms an angle of greater than or equal to about 75 degrees relative to the post.