DIFF Subgroup
E05C 17/06 releasable to allow further opening only when the wing is nearly closed
Introduced: September 1968
Full Title
Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith > by mechanical means > with a movable bar or equivalent member extending between frame and wing > releasable to allow further opening only when the wing is nearly closed