Patent ID: 11859435
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 12:
13. A sliding sash assembly for use as a door or window, comprising:
a) an assembly frame defining a frame opening;
b) a pair of sashes mounted in the frame opening and slidable relative to each other along an opening axis between a closed position and an open position; and
c) at least one stop device mounted adjacent one of the sashes, the stop device including a housing and a pair of depressible stop members movably mounted in the housing, the stop members spaced apart from each other along the opening axis, and each stop member selectively movable independent of the other stop member between a retracted position in which the stop member is retracted into the housing clear of the one of the sashes when the sashes move between the open and closed positions, and an advanced position in which the stop member projects from the housing for engagement with the one of the sashes to restrict movement of the sashes relative to each other toward the open position.