IntimateRider Chair Allows the Disabled to Carry on Normal Sex Lives

Paralysis of the lower body can, literally, be a drag on one’s sex life. However, makers of the IntimateRider claim that their device will allow people with certain disabilities to bring real action into the bedroom. The chair provides users with improved mobility during sex through the use of low-friction bearings and a spring-less design. No electricity or outside power source is required; use of the chair simply requires that the user be able to move their upper torso.
From the product page:

What is the IntimateRider?: The IntimateRider is a small swing chair especially designed to offer a natural gliding motion that will improve sexual mobility. No motors or springs, just the movement of your upper torso is enough momentum needed to enhance sexual performance.
How does it work?: The IntimateRider’s sturdy steel frame sits firmly on the floor – Low center of gravity makes sexual positioning and transferring easy -Precise joint bearings allow the seat to swing naturally -Simply sit in the seat and start with a gentle back and forth motion – Let the IntimateRider do the swaying.

And here’s an NSFW comprehensive video demonstration of the device.