Abstract: A steering wheel having a manually adjustable palm swell is disclosed. To accommodate vehicle operators of a wide range of grip sizes, an adjustable palm swell is desired. A steering wheel having a generally hoop shaped core material is covered in thermoplastic resin and then with an outer cover. A bladder assembly is provided within the outer cover. The bladder assembly includes a bladder, a bulb connected to the bladder, the bulb having check valves on its inlet and outlet. The bulb, if depressed successively, causes air to flow into the bladder, thereby increasing the diameter of the steering wheel in the vicinity of the bladder. The bladder assembly further has a relief check valve connected to the bladder, which is manually actuated to allow air to be released from the bladder and decrease the diameter of the steering wheel in the vicinity of the bladder.

Abstract: A steering wheel having a manually adjustable palm swell is disclosed. To accommodate vehicle operators of a wide range of grip sizes, an adjustable palm swell is desired. A steering wheel having a generally hoop shaped core material is covered in thermoplastic resin and then with an outer cover. A bladder assembly is provided within the outer cover. The bladder assembly includes a bladder, a bulb connected to the bladder, the bulb having check valves on its inlet and outlet. The bulb, if depressed successively, causes air to flow into the bladder, thereby increasing the diameter of the steering wheel in the vicinity of the bladder. The bladder assembly further has a relief check valve connected to the bladder, which is manually actuated to allow air to be released from the bladder and decrease the diameter of the steering wheel in the vicinity of the bladder.