Patent ID: 11959333
Assignee: ALCHIN LONG GROUP IP PTY LIMITED
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 10:
11. A louvre window having:
a frame, the frame having a head, a sill and at least two jambs;
a drive bar located in one or both of the jambs that is movable by a handle;
a plurality of blades located within the frame and connected to the drive bar by a pivot drive connector, such that movement of the drive bar urges the blades to pivot, each blade having:
a first windowpane attached to the blade; and
a second windowpane attached to the blade,

wherein operation of the handle causes movement of the blades between an open position and a closed position, wherein in the closed position the first windowpanes are aligned to form a barrier against airflow and the second windowpanes are aligned to form a barrier against airflow and in the open position the first windowpanes are pivoted out of alignment to allow airflow and the second windowpanes are pivoted out of alignment to allow airflow,
wherein each blade further includes
a slide drive member that pivots together with the pivot drive connector, the slide drive member having a recess that pivots with the slide drive member, and
a sliding member mounted to be movable in a first direction parallel to the first windowpane and having a lower end that extends in a second direction normal to the first windowpane as well as a drive boss received by the recess in the slide drive member,
wherein, when the blades are driven from the closed position to the open position, the slide drive member pivots and thereby urges the sliding member in the first direction to increase a distance between the first windowpane and the second windowpane.