(under subclass 15.1) Umbrella including a gear, crank, lever, cable, or other mechanism for mechanically opening and closing the cover, or mechanically controlling the movement of the ribs.
(1) Note. This subclass includes mechanism for tilting an umbrella top.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22+, for an umbrella having a spring or other source of stored mechanical energy to automatically open and close the umbrella.
