(under subclass 14) Holding means including an enclosed element having at least one flexible wall, a side of the element being forced into gripping contact with the wheel when a fluid is introduced into the element.
SEE OR SEARCH CLASS
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
416, for building drums having an inflatable core.
269, Work Holders,
22, for work holders including a fluid-operated, work-engaging, movable diaphragm.
