with a vertical or horizontal axis of rotation not at one side of the opening, e.g. turnover wings

Full Title

Window sashes, door leaves, or like elements for closing openings; Layout of fixed or moving closures, e.g. windows; Features of rigidly-mounted outer frames relating to the mounting of wing frames > Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing > with only one kind of movement > with a vertical or horizontal axis of rotation not at one side of the opening, e.g. turnover wings

Classification Context

Section:

FIXED CONSTRUCTIONS

Class:

DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS, IN GENERAL; LADDERS

Subclass:

FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES